./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.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/popl20-more-nonblocking-counter-alt2.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', '87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd'] 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/popl20-more-nonblocking-counter-alt2.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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:29:59,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:29:59,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:29:59,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:29:59,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:29:59,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:29:59,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:29:59,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:29:59,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:29:59,492 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:29:59,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:29:59,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:29:59,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:29:59,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:29:59,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:29:59,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:29:59,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:29:59,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:29:59,495 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 -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-11-07 11:29:59,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:29:59,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:29:59,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:29:59,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:29:59,834 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:29:59,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-07 11:30:01,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:30:01,430 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:30:01,432 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-07 11:30:01,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7241877ea/068022a8b18f46198a5af1d01fd4a7aa/FLAGb349fd260 [2024-11-07 11:30:01,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7241877ea/068022a8b18f46198a5af1d01fd4a7aa [2024-11-07 11:30:01,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:30:01,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:30:01,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:30:01,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:30:01,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:30:01,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01, skipping insertion in model container [2024-11-07 11:30:01,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:30:01,670 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/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2024-11-07 11:30:01,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:30:01,684 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:30:01,699 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/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2024-11-07 11:30:01,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:30:01,720 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:30:01,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01 WrapperNode [2024-11-07 11:30:01,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:30:01,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:30:01,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:30:01,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:30:01,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,754 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-11-07 11:30:01,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:30:01,755 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:30:01,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:30:01,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:30:01,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,792 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 11:30:01,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:30:01,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:30:01,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:30:01,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:30:01,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (1/1) ... [2024-11-07 11:30:01,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:30:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:01,847 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 11:30:01,851 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 11:30:01,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:30:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 11:30:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 11:30:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 11:30:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 11:30:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:30:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:30:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:30:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:30:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:30:01,878 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 11:30:01,969 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:30:01,971 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:30:02,114 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:30:02,115 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:30:02,241 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:30:02,242 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:30:02,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:30:02 BoogieIcfgContainer [2024-11-07 11:30:02,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:30:02,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:30:02,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:30:02,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:30:02,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:30:01" (1/3) ... [2024-11-07 11:30:02,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7317f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:30:02, skipping insertion in model container [2024-11-07 11:30:02,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:30:01" (2/3) ... [2024-11-07 11:30:02,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7317f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:30:02, skipping insertion in model container [2024-11-07 11:30:02,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:30:02" (3/3) ... [2024-11-07 11:30:02,253 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-07 11:30:02,267 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:30:02,268 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:30:02,268 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:30:02,325 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 11:30:02,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 56 flow [2024-11-07 11:30:02,395 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-11-07 11:30:02,398 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:30:02,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-07 11:30:02,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 21 transitions, 56 flow [2024-11-07 11:30:02,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 48 flow [2024-11-07 11:30:02,414 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:30:02,425 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;@21ccbc12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:30:02,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:30:02,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:30:02,434 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-07 11:30:02,434 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 11:30:02,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:02,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:02,435 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 11:30:02,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1426367925, now seen corresponding path program 1 times [2024-11-07 11:30:02,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:02,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258702178] [2024-11-07 11:30:02,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:02,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:02,837 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 11:30:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:02,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258702178] [2024-11-07 11:30:02,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258702178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:02,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 11:30:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273984144] [2024-11-07 11:30:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:02,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:30:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:02,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:30:02,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:30:02,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-07 11:30:02,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:02,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:02,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-07 11:30:02,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:03,005 INFO L124 PetriNetUnfolderBase]: 73/144 cut-off events. [2024-11-07 11:30:03,006 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-07 11:30:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 144 events. 73/144 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 410 event pairs, 22 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 252. Up to 74 conditions per place. [2024-11-07 11:30:03,011 INFO L140 encePairwiseOnDemand]: 18/21 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-07 11:30:03,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-11-07 11:30:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:30:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 11:30:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-11-07 11:30:03,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2024-11-07 11:30:03,026 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 3 states and 41 transitions. [2024-11-07 11:30:03,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-11-07 11:30:03,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 11:30:03,034 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-11-07 11:30:03,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-07 11:30:03,040 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2024-11-07 11:30:03,040 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-11-07 11:30:03,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:03,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:03,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:03,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:30:03,041 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 11:30:03,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2133826849, now seen corresponding path program 1 times [2024-11-07 11:30:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964796447] [2024-11-07 11:30:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 11:30:03,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:03,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964796447] [2024-11-07 11:30:03,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964796447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:30:03,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:30:03,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:30:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142167540] [2024-11-07 11:30:03,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:30:03,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 11:30:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 11:30:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 11:30:03,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:03,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:03,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:03,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:03,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:03,373 INFO L124 PetriNetUnfolderBase]: 141/258 cut-off events. [2024-11-07 11:30:03,373 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-07 11:30:03,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 258 events. 141/258 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 889 event pairs, 81 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 277. Up to 179 conditions per place. [2024-11-07 11:30:03,375 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-11-07 11:30:03,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-11-07 11:30:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 11:30:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 11:30:03,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2024-11-07 11:30:03,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-11-07 11:30:03,379 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 41 transitions. [2024-11-07 11:30:03,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-11-07 11:30:03,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 11:30:03,382 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-07 11:30:03,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-07 11:30:03,383 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-11-07 11:30:03,384 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-07 11:30:03,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:03,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:03,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:03,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:30:03,385 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 11:30:03,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:03,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1055225553, now seen corresponding path program 1 times [2024-11-07 11:30:03,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108551292] [2024-11-07 11:30:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:03,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:03,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108551292] [2024-11-07 11:30:03,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108551292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:03,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456943293] [2024-11-07 11:30:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:03,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:03,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:03,869 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 11:30:03,872 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 11:30:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:03,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 11:30:03,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:04,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:04,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456943293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:04,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-07 11:30:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080048439] [2024-11-07 11:30:04,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:04,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:30:04,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:30:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:30:04,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:30:04,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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 11:30:04,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:04,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:30:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:05,553 INFO L124 PetriNetUnfolderBase]: 580/998 cut-off events. [2024-11-07 11:30:05,553 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2024-11-07 11:30:05,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 998 events. 580/998 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4177 event pairs, 28 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 879. Up to 244 conditions per place. [2024-11-07 11:30:05,562 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 114 selfloop transitions, 42 changer transitions 12/169 dead transitions. [2024-11-07 11:30:05,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 169 transitions, 831 flow [2024-11-07 11:30:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:30:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:30:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 223 transitions. [2024-11-07 11:30:05,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588972431077694 [2024-11-07 11:30:05,568 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 19 states and 223 transitions. [2024-11-07 11:30:05,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 169 transitions, 831 flow [2024-11-07 11:30:05,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 169 transitions, 807 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 11:30:05,575 INFO L231 Difference]: Finished difference. Result has 52 places, 65 transitions, 412 flow [2024-11-07 11:30:05,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=412, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2024-11-07 11:30:05,578 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 29 predicate places. [2024-11-07 11:30:05,578 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 412 flow [2024-11-07 11:30:05,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 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 11:30:05,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:05,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:05,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 11:30:05,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:05,780 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 11:30:05,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash -987841917, now seen corresponding path program 2 times [2024-11-07 11:30:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:05,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282795888] [2024-11-07 11:30:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:05,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:05,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282795888] [2024-11-07 11:30:05,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282795888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137157095] [2024-11-07 11:30:05,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:30:05,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:05,976 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 11:30:05,978 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 11:30:06,050 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:30:06,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:06,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 11:30:06,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:06,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:06,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137157095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:06,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:06,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 8] total 14 [2024-11-07 11:30:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452799038] [2024-11-07 11:30:06,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:06,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:30:06,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:30:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:30:06,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:30:06,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 412 flow. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:06,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:06,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:30:06,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:07,301 INFO L124 PetriNetUnfolderBase]: 814/1407 cut-off events. [2024-11-07 11:30:07,303 INFO L125 PetriNetUnfolderBase]: For 3056/3056 co-relation queries the response was YES. [2024-11-07 11:30:07,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 1407 events. 814/1407 cut-off events. For 3056/3056 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6686 event pairs, 0 based on Foata normal form. 30/1437 useless extension candidates. Maximal degree in co-relation 4629. Up to 358 conditions per place. [2024-11-07 11:30:07,322 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 114 selfloop transitions, 145 changer transitions 15/275 dead transitions. [2024-11-07 11:30:07,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 275 transitions, 2256 flow [2024-11-07 11:30:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:30:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:30:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-11-07 11:30:07,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41102756892230574 [2024-11-07 11:30:07,326 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 412 flow. Second operand 19 states and 164 transitions. [2024-11-07 11:30:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 275 transitions, 2256 flow [2024-11-07 11:30:07,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 275 transitions, 2119 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-11-07 11:30:07,350 INFO L231 Difference]: Finished difference. Result has 83 places, 202 transitions, 1877 flow [2024-11-07 11:30:07,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1877, PETRI_PLACES=83, PETRI_TRANSITIONS=202} [2024-11-07 11:30:07,354 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 60 predicate places. [2024-11-07 11:30:07,354 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 202 transitions, 1877 flow [2024-11-07 11:30:07,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:07,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:07,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:07,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 11:30:07,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:07,556 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 11:30:07,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 771752695, now seen corresponding path program 3 times [2024-11-07 11:30:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:07,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169049979] [2024-11-07 11:30:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169049979] [2024-11-07 11:30:07,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169049979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434916259] [2024-11-07 11:30:07,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:30:07,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:07,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:07,774 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 11:30:07,776 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 11:30:07,837 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:30:07,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:07,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:07,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:07,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434916259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:08,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-07 11:30:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025123673] [2024-11-07 11:30:08,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:08,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:30:08,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:08,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:30:08,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:30:08,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:08,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 202 transitions, 1877 flow. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 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 11:30:08,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:08,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:08,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:08,876 INFO L124 PetriNetUnfolderBase]: 1072/1906 cut-off events. [2024-11-07 11:30:08,877 INFO L125 PetriNetUnfolderBase]: For 11722/11732 co-relation queries the response was YES. [2024-11-07 11:30:08,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9514 conditions, 1906 events. 1072/1906 cut-off events. For 11722/11732 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10311 event pairs, 102 based on Foata normal form. 18/1922 useless extension candidates. Maximal degree in co-relation 7811. Up to 602 conditions per place. [2024-11-07 11:30:08,937 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 132 selfloop transitions, 186 changer transitions 23/375 dead transitions. [2024-11-07 11:30:08,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 375 transitions, 4182 flow [2024-11-07 11:30:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 11:30:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 11:30:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 156 transitions. [2024-11-07 11:30:08,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-07 11:30:08,939 INFO L175 Difference]: Start difference. First operand has 83 places, 202 transitions, 1877 flow. Second operand 16 states and 156 transitions. [2024-11-07 11:30:08,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 375 transitions, 4182 flow [2024-11-07 11:30:09,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 375 transitions, 4095 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-11-07 11:30:09,012 INFO L231 Difference]: Finished difference. Result has 106 places, 304 transitions, 3747 flow [2024-11-07 11:30:09,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3747, PETRI_PLACES=106, PETRI_TRANSITIONS=304} [2024-11-07 11:30:09,015 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 83 predicate places. [2024-11-07 11:30:09,015 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 304 transitions, 3747 flow [2024-11-07 11:30:09,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 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 11:30:09,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:09,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:09,036 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 11:30:09,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:09,218 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 11:30:09,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1733481921, now seen corresponding path program 4 times [2024-11-07 11:30:09,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:09,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58589887] [2024-11-07 11:30:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:09,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58589887] [2024-11-07 11:30:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58589887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372153991] [2024-11-07 11:30:09,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:30:09,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:09,451 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 11:30:09,453 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 11:30:09,504 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:30:09,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:09,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:09,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:09,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:09,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372153991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:09,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:09,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-07 11:30:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848093428] [2024-11-07 11:30:09,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:09,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:30:09,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:30:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:30:09,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:30:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 304 transitions, 3747 flow. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 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 11:30:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:09,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:30:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:11,291 INFO L124 PetriNetUnfolderBase]: 1541/2588 cut-off events. [2024-11-07 11:30:11,291 INFO L125 PetriNetUnfolderBase]: For 24606/24606 co-relation queries the response was YES. [2024-11-07 11:30:11,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15710 conditions, 2588 events. 1541/2588 cut-off events. For 24606/24606 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13668 event pairs, 21 based on Foata normal form. 35/2623 useless extension candidates. Maximal degree in co-relation 14554. Up to 585 conditions per place. [2024-11-07 11:30:11,328 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 225 selfloop transitions, 397 changer transitions 1/624 dead transitions. [2024-11-07 11:30:11,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 624 transitions, 8657 flow [2024-11-07 11:30:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-07 11:30:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-07 11:30:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 272 transitions. [2024-11-07 11:30:11,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-11-07 11:30:11,332 INFO L175 Difference]: Start difference. First operand has 106 places, 304 transitions, 3747 flow. Second operand 32 states and 272 transitions. [2024-11-07 11:30:11,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 624 transitions, 8657 flow [2024-11-07 11:30:11,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 624 transitions, 8467 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-11-07 11:30:11,466 INFO L231 Difference]: Finished difference. Result has 149 places, 504 transitions, 7521 flow [2024-11-07 11:30:11,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7521, PETRI_PLACES=149, PETRI_TRANSITIONS=504} [2024-11-07 11:30:11,469 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 126 predicate places. [2024-11-07 11:30:11,469 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 504 transitions, 7521 flow [2024-11-07 11:30:11,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 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 11:30:11,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:11,470 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:11,487 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 11:30:11,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-07 11:30:11,671 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 11:30:11,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1329935501, now seen corresponding path program 5 times [2024-11-07 11:30:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690738391] [2024-11-07 11:30:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:11,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:11,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690738391] [2024-11-07 11:30:11,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690738391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:11,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126729727] [2024-11-07 11:30:11,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:30:11,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:11,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:11,887 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 11:30:11,888 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 11:30:11,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:30:11,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:11,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:30:11,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:12,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126729727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:12,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-07 11:30:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136892740] [2024-11-07 11:30:12,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:12,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:30:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:30:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:30:12,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:12,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 504 transitions, 7521 flow. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 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 11:30:12,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:12,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:15,256 INFO L124 PetriNetUnfolderBase]: 2089/3638 cut-off events. [2024-11-07 11:30:15,258 INFO L125 PetriNetUnfolderBase]: For 54698/54702 co-relation queries the response was YES. [2024-11-07 11:30:15,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25712 conditions, 3638 events. 2089/3638 cut-off events. For 54698/54702 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21747 event pairs, 31 based on Foata normal form. 74/3712 useless extension candidates. Maximal degree in co-relation 24360. Up to 821 conditions per place. [2024-11-07 11:30:15,322 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 191 selfloop transitions, 732 changer transitions 2/973 dead transitions. [2024-11-07 11:30:15,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 973 transitions, 15594 flow [2024-11-07 11:30:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-07 11:30:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-07 11:30:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 492 transitions. [2024-11-07 11:30:15,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-11-07 11:30:15,325 INFO L175 Difference]: Start difference. First operand has 149 places, 504 transitions, 7521 flow. Second operand 58 states and 492 transitions. [2024-11-07 11:30:15,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 973 transitions, 15594 flow [2024-11-07 11:30:15,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 973 transitions, 15244 flow, removed 164 selfloop flow, removed 6 redundant places. [2024-11-07 11:30:15,751 INFO L231 Difference]: Finished difference. Result has 211 places, 834 transitions, 14291 flow [2024-11-07 11:30:15,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=7339, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=14291, PETRI_PLACES=211, PETRI_TRANSITIONS=834} [2024-11-07 11:30:15,753 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 188 predicate places. [2024-11-07 11:30:15,753 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 834 transitions, 14291 flow [2024-11-07 11:30:15,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 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 11:30:15,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:15,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:15,771 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 11:30:15,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:15,959 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 11:30:15,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1088901193, now seen corresponding path program 6 times [2024-11-07 11:30:15,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:15,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888427376] [2024-11-07 11:30:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888427376] [2024-11-07 11:30:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888427376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446413714] [2024-11-07 11:30:16,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:30:16,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:16,152 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 11:30:16,197 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 11:30:16,247 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-07 11:30:16,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:16,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:16,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:16,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446413714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:16,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:16,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-07 11:30:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223505919] [2024-11-07 11:30:16,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:16,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:30:16,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:16,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:30:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:30:16,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:16,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 834 transitions, 14291 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 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 11:30:16,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:16,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:16,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:18,281 INFO L124 PetriNetUnfolderBase]: 2240/3874 cut-off events. [2024-11-07 11:30:18,281 INFO L125 PetriNetUnfolderBase]: For 53591/53607 co-relation queries the response was YES. [2024-11-07 11:30:18,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30104 conditions, 3874 events. 2240/3874 cut-off events. For 53591/53607 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23388 event pairs, 92 based on Foata normal form. 10/3882 useless extension candidates. Maximal degree in co-relation 28939. Up to 902 conditions per place. [2024-11-07 11:30:18,342 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 282 selfloop transitions, 620 changer transitions 4/954 dead transitions. [2024-11-07 11:30:18,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 954 transitions, 17877 flow [2024-11-07 11:30:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:30:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:30:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 191 transitions. [2024-11-07 11:30:18,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-11-07 11:30:18,344 INFO L175 Difference]: Start difference. First operand has 211 places, 834 transitions, 14291 flow. Second operand 20 states and 191 transitions. [2024-11-07 11:30:18,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 954 transitions, 17877 flow [2024-11-07 11:30:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 954 transitions, 17036 flow, removed 405 selfloop flow, removed 4 redundant places. [2024-11-07 11:30:18,890 INFO L231 Difference]: Finished difference. Result has 230 places, 903 transitions, 16874 flow [2024-11-07 11:30:18,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=13493, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=16874, PETRI_PLACES=230, PETRI_TRANSITIONS=903} [2024-11-07 11:30:18,892 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 207 predicate places. [2024-11-07 11:30:18,892 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 903 transitions, 16874 flow [2024-11-07 11:30:18,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 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 11:30:18,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:18,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:18,908 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 11:30:19,096 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,SelfDestructingSolverStorable7 [2024-11-07 11:30:19,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:30:19,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash -769456077, now seen corresponding path program 7 times [2024-11-07 11:30:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776069353] [2024-11-07 11:30:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:19,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:19,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776069353] [2024-11-07 11:30:19,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776069353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:19,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400043598] [2024-11-07 11:30:19,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:30:19,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:19,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:19,294 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 11:30:19,296 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 11:30:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:19,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:19,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:19,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400043598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:19,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:19,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-07 11:30:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248735487] [2024-11-07 11:30:19,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:19,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:30:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:30:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:30:19,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:30:19,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 903 transitions, 16874 flow. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 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 11:30:19,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:19,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:30:19,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:21,806 INFO L124 PetriNetUnfolderBase]: 3162/5304 cut-off events. [2024-11-07 11:30:21,806 INFO L125 PetriNetUnfolderBase]: For 60503/60503 co-relation queries the response was YES. [2024-11-07 11:30:21,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43004 conditions, 5304 events. 3162/5304 cut-off events. For 60503/60503 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 32152 event pairs, 37 based on Foata normal form. 11/5315 useless extension candidates. Maximal degree in co-relation 41334. Up to 1324 conditions per place. [2024-11-07 11:30:21,869 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 402 selfloop transitions, 1007 changer transitions 0/1410 dead transitions. [2024-11-07 11:30:21,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1410 transitions, 28161 flow [2024-11-07 11:30:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-07 11:30:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-07 11:30:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 323 transitions. [2024-11-07 11:30:21,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4157014157014157 [2024-11-07 11:30:21,872 INFO L175 Difference]: Start difference. First operand has 230 places, 903 transitions, 16874 flow. Second operand 37 states and 323 transitions. [2024-11-07 11:30:21,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1410 transitions, 28161 flow [2024-11-07 11:30:22,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1410 transitions, 27912 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-11-07 11:30:22,854 INFO L231 Difference]: Finished difference. Result has 279 places, 1295 transitions, 27707 flow [2024-11-07 11:30:22,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=16723, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=27707, PETRI_PLACES=279, PETRI_TRANSITIONS=1295} [2024-11-07 11:30:22,856 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 256 predicate places. [2024-11-07 11:30:22,856 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 1295 transitions, 27707 flow [2024-11-07 11:30:22,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 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 11:30:22,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:22,856 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:22,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 11:30:23,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:23,057 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 11:30:23,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1775399255, now seen corresponding path program 8 times [2024-11-07 11:30:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:23,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44067543] [2024-11-07 11:30:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:23,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:23,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44067543] [2024-11-07 11:30:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44067543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739059038] [2024-11-07 11:30:23,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:30:23,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:23,312 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 11:30:23,314 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 11:30:23,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:30:23,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:23,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:23,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:23,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:23,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739059038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:23,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:23,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-07 11:30:23,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934978061] [2024-11-07 11:30:23,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:23,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 11:30:23,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 11:30:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-07 11:30:23,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:23,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 1295 transitions, 27707 flow. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 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 11:30:23,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:23,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:23,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:26,064 INFO L124 PetriNetUnfolderBase]: 3446/5964 cut-off events. [2024-11-07 11:30:26,065 INFO L125 PetriNetUnfolderBase]: For 105599/105601 co-relation queries the response was YES. [2024-11-07 11:30:26,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55442 conditions, 5964 events. 3446/5964 cut-off events. For 105599/105601 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 39115 event pairs, 131 based on Foata normal form. 44/6008 useless extension candidates. Maximal degree in co-relation 54197. Up to 1479 conditions per place. [2024-11-07 11:30:26,139 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 356 selfloop transitions, 1211 changer transitions 0/1641 dead transitions. [2024-11-07 11:30:26,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1641 transitions, 37855 flow [2024-11-07 11:30:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-07 11:30:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-07 11:30:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 230 transitions. [2024-11-07 11:30:26,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-07 11:30:26,141 INFO L175 Difference]: Start difference. First operand has 279 places, 1295 transitions, 27707 flow. Second operand 23 states and 230 transitions. [2024-11-07 11:30:26,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1641 transitions, 37855 flow [2024-11-07 11:30:27,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 1641 transitions, 36838 flow, removed 154 selfloop flow, removed 5 redundant places. [2024-11-07 11:30:27,784 INFO L231 Difference]: Finished difference. Result has 306 places, 1553 transitions, 37615 flow [2024-11-07 11:30:27,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=26906, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=975, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=37615, PETRI_PLACES=306, PETRI_TRANSITIONS=1553} [2024-11-07 11:30:27,786 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 283 predicate places. [2024-11-07 11:30:27,786 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 1553 transitions, 37615 flow [2024-11-07 11:30:27,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 18 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 11:30:27,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:27,786 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:27,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 11:30:27,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:27,987 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 11:30:27,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1186924357, now seen corresponding path program 9 times [2024-11-07 11:30:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:27,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136820478] [2024-11-07 11:30:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:28,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:28,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136820478] [2024-11-07 11:30:28,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136820478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:28,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020726898] [2024-11-07 11:30:28,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:30:28,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:28,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:28,170 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 11:30:28,171 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 11:30:28,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 11:30:28,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:28,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:28,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:28,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:28,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020726898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:28,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:28,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-11-07 11:30:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138874392] [2024-11-07 11:30:28,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:28,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:30:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:30:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:30:28,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-07 11:30:28,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1553 transitions, 37615 flow. Second operand has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:28,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:28,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-07 11:30:28,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:33,357 INFO L124 PetriNetUnfolderBase]: 6014/10041 cut-off events. [2024-11-07 11:30:33,357 INFO L125 PetriNetUnfolderBase]: For 187858/187858 co-relation queries the response was YES. [2024-11-07 11:30:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102629 conditions, 10041 events. 6014/10041 cut-off events. For 187858/187858 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 66929 event pairs, 64 based on Foata normal form. 111/10152 useless extension candidates. Maximal degree in co-relation 101246. Up to 2565 conditions per place. [2024-11-07 11:30:33,480 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 745 selfloop transitions, 2111 changer transitions 8/2865 dead transitions. [2024-11-07 11:30:33,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 2865 transitions, 74139 flow [2024-11-07 11:30:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-07 11:30:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-07 11:30:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 403 transitions. [2024-11-07 11:30:33,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4083080040526849 [2024-11-07 11:30:33,482 INFO L175 Difference]: Start difference. First operand has 306 places, 1553 transitions, 37615 flow. Second operand 47 states and 403 transitions. [2024-11-07 11:30:33,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 2865 transitions, 74139 flow [2024-11-07 11:30:38,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 2865 transitions, 73854 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-11-07 11:30:38,265 INFO L231 Difference]: Finished difference. Result has 373 places, 2641 transitions, 73222 flow [2024-11-07 11:30:38,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=37267, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=73222, PETRI_PLACES=373, PETRI_TRANSITIONS=2641} [2024-11-07 11:30:38,268 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 350 predicate places. [2024-11-07 11:30:38,268 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 2641 transitions, 73222 flow [2024-11-07 11:30:38,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:38,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:38,268 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:38,286 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 11:30:38,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:38,473 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 11:30:38,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash 233897117, now seen corresponding path program 10 times [2024-11-07 11:30:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478688104] [2024-11-07 11:30:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:38,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478688104] [2024-11-07 11:30:38,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478688104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382843387] [2024-11-07 11:30:38,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:30:38,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:38,593 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 11:30:38,595 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 11:30:38,643 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:30:38,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:38,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:38,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:38,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:38,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382843387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:38,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:38,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-07 11:30:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708521752] [2024-11-07 11:30:38,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:38,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 11:30:38,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:38,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 11:30:38,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-07 11:30:38,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:38,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 2641 transitions, 73222 flow. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 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 11:30:38,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:38,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:38,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:30:44,783 INFO L124 PetriNetUnfolderBase]: 5667/9646 cut-off events. [2024-11-07 11:30:44,784 INFO L125 PetriNetUnfolderBase]: For 271841/271843 co-relation queries the response was YES. [2024-11-07 11:30:44,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112830 conditions, 9646 events. 5667/9646 cut-off events. For 271841/271843 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 66134 event pairs, 378 based on Foata normal form. 16/9662 useless extension candidates. Maximal degree in co-relation 111801. Up to 2904 conditions per place. [2024-11-07 11:30:44,950 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 391 selfloop transitions, 2205 changer transitions 4/2731 dead transitions. [2024-11-07 11:30:44,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 2731 transitions, 79910 flow [2024-11-07 11:30:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 11:30:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 11:30:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 191 transitions. [2024-11-07 11:30:44,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-11-07 11:30:44,952 INFO L175 Difference]: Start difference. First operand has 373 places, 2641 transitions, 73222 flow. Second operand 20 states and 191 transitions. [2024-11-07 11:30:44,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 2731 transitions, 79910 flow [2024-11-07 11:30:51,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 2731 transitions, 79484 flow, removed 189 selfloop flow, removed 5 redundant places. [2024-11-07 11:30:51,703 INFO L231 Difference]: Finished difference. Result has 389 places, 2685 transitions, 80153 flow [2024-11-07 11:30:51,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=72633, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=80153, PETRI_PLACES=389, PETRI_TRANSITIONS=2685} [2024-11-07 11:30:51,706 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 366 predicate places. [2024-11-07 11:30:51,706 INFO L471 AbstractCegarLoop]: Abstraction has has 389 places, 2685 transitions, 80153 flow [2024-11-07 11:30:51,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 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 11:30:51,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:30:51,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:30:51,723 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 11:30:51,907 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,SelfDestructingSolverStorable11 [2024-11-07 11:30:51,907 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 11:30:51,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:30:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -983645117, now seen corresponding path program 11 times [2024-11-07 11:30:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:30:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187982362] [2024-11-07 11:30:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:30:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:30:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:30:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:52,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:30:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187982362] [2024-11-07 11:30:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187982362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:30:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730596551] [2024-11-07 11:30:52,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:30:52,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:30:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:30:52,117 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 11:30:52,118 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 11:30:52,170 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 11:30:52,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:30:52,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:30:52,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:30:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:52,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:30:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:30:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730596551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:30:52,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:30:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-07 11:30:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196703978] [2024-11-07 11:30:52,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:30:52,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 11:30:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:30:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 11:30:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-11-07 11:30:52,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:30:52,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 2685 transitions, 80153 flow. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:30:52,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:30:52,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:30:52,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:00,140 INFO L124 PetriNetUnfolderBase]: 6313/10768 cut-off events. [2024-11-07 11:31:00,140 INFO L125 PetriNetUnfolderBase]: For 340276/340279 co-relation queries the response was YES. [2024-11-07 11:31:00,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134979 conditions, 10768 events. 6313/10768 cut-off events. For 340276/340279 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 75058 event pairs, 516 based on Foata normal form. 60/10827 useless extension candidates. Maximal degree in co-relation 133764. Up to 3953 conditions per place. [2024-11-07 11:31:00,368 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 1309 selfloop transitions, 1686 changer transitions 0/3126 dead transitions. [2024-11-07 11:31:00,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 3126 transitions, 98621 flow [2024-11-07 11:31:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:31:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:31:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 197 transitions. [2024-11-07 11:31:00,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4467120181405896 [2024-11-07 11:31:00,369 INFO L175 Difference]: Start difference. First operand has 389 places, 2685 transitions, 80153 flow. Second operand 21 states and 197 transitions. [2024-11-07 11:31:00,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 3126 transitions, 98621 flow [2024-11-07 11:31:09,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 3126 transitions, 97930 flow, removed 80 selfloop flow, removed 13 redundant places. [2024-11-07 11:31:09,068 INFO L231 Difference]: Finished difference. Result has 412 places, 2962 transitions, 94984 flow [2024-11-07 11:31:09,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=79583, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=94984, PETRI_PLACES=412, PETRI_TRANSITIONS=2962} [2024-11-07 11:31:09,070 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 389 predicate places. [2024-11-07 11:31:09,071 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 2962 transitions, 94984 flow [2024-11-07 11:31:09,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:09,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:09,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:09,086 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 11:31:09,275 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,SelfDestructingSolverStorable12 [2024-11-07 11:31:09,276 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 11:31:09,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1038874551, now seen corresponding path program 12 times [2024-11-07 11:31:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:09,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765525247] [2024-11-07 11:31:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765525247] [2024-11-07 11:31:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765525247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737322134] [2024-11-07 11:31:09,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:31:09,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:09,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:09,381 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 11:31:09,382 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 11:31:09,429 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 11:31:09,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:31:09,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:31:09,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:09,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737322134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:09,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-11-07 11:31:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156087495] [2024-11-07 11:31:09,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:09,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:31:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:31:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:31:09,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:31:09,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 2962 transitions, 94984 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 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 11:31:09,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:09,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:31:09,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:31:18,258 INFO L124 PetriNetUnfolderBase]: 6611/11277 cut-off events. [2024-11-07 11:31:18,258 INFO L125 PetriNetUnfolderBase]: For 427261/427264 co-relation queries the response was YES. [2024-11-07 11:31:18,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150901 conditions, 11277 events. 6611/11277 cut-off events. For 427261/427264 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 79234 event pairs, 1075 based on Foata normal form. 10/11284 useless extension candidates. Maximal degree in co-relation 150313. Up to 6586 conditions per place. [2024-11-07 11:31:18,467 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 1488 selfloop transitions, 1579 changer transitions 3/3201 dead transitions. [2024-11-07 11:31:18,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 3201 transitions, 108335 flow [2024-11-07 11:31:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 11:31:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 11:31:18,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 193 transitions. [2024-11-07 11:31:18,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4376417233560091 [2024-11-07 11:31:18,469 INFO L175 Difference]: Start difference. First operand has 412 places, 2962 transitions, 94984 flow. Second operand 21 states and 193 transitions. [2024-11-07 11:31:18,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 3201 transitions, 108335 flow [2024-11-07 11:31:29,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 3201 transitions, 107403 flow, removed 358 selfloop flow, removed 2 redundant places. [2024-11-07 11:31:29,279 INFO L231 Difference]: Finished difference. Result has 445 places, 3148 transitions, 106898 flow [2024-11-07 11:31:29,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=94198, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=106898, PETRI_PLACES=445, PETRI_TRANSITIONS=3148} [2024-11-07 11:31:29,282 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 422 predicate places. [2024-11-07 11:31:29,282 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 3148 transitions, 106898 flow [2024-11-07 11:31:29,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 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 11:31:29,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:31:29,282 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:31:29,294 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 11:31:29,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:29,483 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 11:31:29,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:31:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -270037781, now seen corresponding path program 13 times [2024-11-07 11:31:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:31:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564981962] [2024-11-07 11:31:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:31:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:31:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:29,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:31:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564981962] [2024-11-07 11:31:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564981962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:31:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086151249] [2024-11-07 11:31:29,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:31:29,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:31:29,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:31:29,619 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 11:31:29,622 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 11:31:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:31:29,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:31:29,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:31:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:29,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:31:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:31:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086151249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:31:29,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:31:29,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-11-07 11:31:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031129181] [2024-11-07 11:31:29,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:31:29,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 11:31:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:31:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 11:31:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-07 11:31:29,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-07 11:31:29,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 3148 transitions, 106898 flow. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:31:29,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:31:29,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-07 11:31:29,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand