./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --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/pthread/triangular-longest-1.i', '-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', '81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683'] 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/pthread/triangular-longest-1.i -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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:06:43,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:06:43,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 11:06:43,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:06:43,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:06:43,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:06:43,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:06:43,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:06:43,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:06:43,802 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:06:43,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:06:43,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:06:43,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:06:43,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:06:43,804 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:06:43,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:06:43,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:06:43,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 11:06:43,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:06:43,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:06:43,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:06:43,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:06:43,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:06:43,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:06:43,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:06:43,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:06:43,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:06:43,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:06:43,808 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 -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-07 11:06:44,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:06:44,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:06:44,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:06:44,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:06:44,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:06:44,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-07 11:06:45,458 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:06:45,722 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:06:45,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-07 11:06:45,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d14a9b2b7/7e1d289aa7f2413892d55ec85cd38b76/FLAG041db90a0 [2024-11-07 11:06:46,036 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d14a9b2b7/7e1d289aa7f2413892d55ec85cd38b76 [2024-11-07 11:06:46,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:06:46,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:06:46,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:06:46,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:06:46,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:06:46,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b64b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46, skipping insertion in model container [2024-11-07 11:06:46,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:06:46,456 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/pthread/triangular-longest-1.i[30962,30975] [2024-11-07 11:06:46,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:06:46,470 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:06:46,525 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/pthread/triangular-longest-1.i[30962,30975] [2024-11-07 11:06:46,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:06:46,570 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:06:46,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46 WrapperNode [2024-11-07 11:06:46,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:06:46,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:06:46,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:06:46,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:06:46,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,619 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-07 11:06:46,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:06:46,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:06:46,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:06:46,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:06:46,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,652 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 11:06:46,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:06:46,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:06:46,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:06:46,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:06:46,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (1/1) ... [2024-11-07 11:06:46,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:06:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:06:46,707 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 11:06:46,711 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 11:06:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-07 11:06:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-07 11:06:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-07 11:06:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-07 11:06:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 11:06:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:06:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:06:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 11:06:46,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:06:46,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:06:46,740 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 11:06:46,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:06:46,862 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:06:46,976 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 11:06:46,976 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:06:47,055 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:06:47,056 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 11:06:47,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:06:47 BoogieIcfgContainer [2024-11-07 11:06:47,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:06:47,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:06:47,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:06:47,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:06:47,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:06:46" (1/3) ... [2024-11-07 11:06:47,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a341d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:06:47, skipping insertion in model container [2024-11-07 11:06:47,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:06:46" (2/3) ... [2024-11-07 11:06:47,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a341d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:06:47, skipping insertion in model container [2024-11-07 11:06:47,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:06:47" (3/3) ... [2024-11-07 11:06:47,068 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-07 11:06:47,083 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:06:47,085 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:06:47,085 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 11:06:47,139 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 11:06:47,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-07 11:06:47,213 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-07 11:06:47,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:06:47,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-07 11:06:47,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-07 11:06:47,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-07 11:06:47,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:06:47,254 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;@598c04da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:06:47,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-07 11:06:47,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 11:06:47,264 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 11:06:47,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 11:06:47,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:47,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:47,265 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 11:06:47,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-11-07 11:06:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:47,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179682177] [2024-11-07 11:06:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:47,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:47,686 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 11:06:47,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179682177] [2024-11-07 11:06:47,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179682177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:06:47,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:06:47,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 11:06:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289605799] [2024-11-07 11:06:47,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:06:47,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 11:06:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 11:06:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 11:06:47,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:47,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:47,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:47,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:47,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:48,080 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-11-07 11:06:48,080 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 11:06:48,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-11-07 11:06:48,088 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-11-07 11:06:48,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-11-07 11:06:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 11:06:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 11:06:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-07 11:06:48,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-07 11:06:48,107 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-11-07 11:06:48,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-11-07 11:06:48,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 11:06:48,115 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-11-07 11:06:48,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-07 11:06:48,123 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-07 11:06:48,124 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-11-07 11:06:48,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:48,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:48,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:48,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:06:48,125 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 11:06:48,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:48,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-11-07 11:06:48,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:48,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919618537] [2024-11-07 11:06:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:48,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:48,312 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 11:06:48,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:48,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919618537] [2024-11-07 11:06:48,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919618537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:06:48,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:06:48,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:06:48,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232264561] [2024-11-07 11:06:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:06:48,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:06:48,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:06:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:06:48,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:48,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:48,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:48,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:48,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:48,623 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-11-07 11:06:48,624 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-11-07 11:06:48,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-11-07 11:06:48,635 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-11-07 11:06:48,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-11-07 11:06:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:06:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:06:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-07 11:06:48,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-07 11:06:48,639 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-11-07 11:06:48,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-11-07 11:06:48,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-07 11:06:48,647 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-11-07 11:06:48,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-11-07 11:06:48,649 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-07 11:06:48,650 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-11-07 11:06:48,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:48,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:48,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:48,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 11:06:48,651 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 11:06:48,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-11-07 11:06:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:48,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737247179] [2024-11-07 11:06:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:48,795 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 11:06:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737247179] [2024-11-07 11:06:48,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737247179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:06:48,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:06:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 11:06:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627612001] [2024-11-07 11:06:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:06:48,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 11:06:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 11:06:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 11:06:48,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:48,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:48,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:48,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:48,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:49,061 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-11-07 11:06:49,062 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-11-07 11:06:49,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-11-07 11:06:49,068 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-11-07 11:06:49,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-11-07 11:06:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 11:06:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 11:06:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-07 11:06:49,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-07 11:06:49,070 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-11-07 11:06:49,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-11-07 11:06:49,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-07 11:06:49,082 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-11-07 11:06:49,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-11-07 11:06:49,083 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-07 11:06:49,084 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-11-07 11:06:49,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:49,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:49,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:49,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 11:06:49,085 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 11:06:49,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:49,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-11-07 11:06:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167677944] [2024-11-07 11:06:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:49,243 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 11:06:49,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167677944] [2024-11-07 11:06:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167677944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:06:49,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:06:49,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:06:49,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505113304] [2024-11-07 11:06:49,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:06:49,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:06:49,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:06:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:06:49,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:49,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:49,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:49,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:49,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:49,479 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-11-07 11:06:49,480 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-11-07 11:06:49,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2860 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-11-07 11:06:49,486 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-11-07 11:06:49,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-11-07 11:06:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 11:06:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 11:06:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-11-07 11:06:49,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-07 11:06:49,488 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-11-07 11:06:49,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-11-07 11:06:49,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-07 11:06:49,498 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-11-07 11:06:49,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-07 11:06:49,499 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-07 11:06:49,499 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-11-07 11:06:49,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:49,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:49,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:49,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 11:06:49,500 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 11:06:49,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-11-07 11:06:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074560149] [2024-11-07 11:06:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:49,620 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 11:06:49,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:49,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074560149] [2024-11-07 11:06:49,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074560149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:06:49,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:06:49,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:06:49,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367238085] [2024-11-07 11:06:49,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:06:49,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:06:49,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:06:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:06:49,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:49,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:49,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:49,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:49,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:49,925 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-11-07 11:06:49,926 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-11-07 11:06:49,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4538 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-11-07 11:06:49,933 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-11-07 11:06:49,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-11-07 11:06:49,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:06:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:06:49,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-07 11:06:49,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-07 11:06:49,937 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-11-07 11:06:49,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-11-07 11:06:49,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-07 11:06:49,948 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-11-07 11:06:49,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-11-07 11:06:49,950 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-07 11:06:49,951 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-11-07 11:06:49,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:49,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:49,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:49,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 11:06:49,952 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 11:06:49,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-11-07 11:06:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:49,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780615046] [2024-11-07 11:06:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:49,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:50,062 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 11:06:50,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:50,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780615046] [2024-11-07 11:06:50,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780615046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:06:50,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:06:50,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 11:06:50,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612705278] [2024-11-07 11:06:50,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:06:50,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 11:06:50,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:50,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 11:06:50,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 11:06:50,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:50,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:50,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:50,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:50,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:50,395 INFO L124 PetriNetUnfolderBase]: 499/926 cut-off events. [2024-11-07 11:06:50,395 INFO L125 PetriNetUnfolderBase]: For 5506/5518 co-relation queries the response was YES. [2024-11-07 11:06:50,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 926 events. 499/926 cut-off events. For 5506/5518 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4319 event pairs, 59 based on Foata normal form. 57/980 useless extension candidates. Maximal degree in co-relation 3487. Up to 157 conditions per place. [2024-11-07 11:06:50,405 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 27 changer transitions 33/108 dead transitions. [2024-11-07 11:06:50,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 999 flow [2024-11-07 11:06:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 11:06:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 11:06:50,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-11-07 11:06:50,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-07 11:06:50,408 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 11 states and 138 transitions. [2024-11-07 11:06:50,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 999 flow [2024-11-07 11:06:50,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 931 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-07 11:06:50,424 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 514 flow [2024-11-07 11:06:50,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=514, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-07 11:06:50,426 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-07 11:06:50,426 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 514 flow [2024-11-07 11:06:50,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:50,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:50,427 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:50,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 11:06:50,427 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 11:06:50,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-11-07 11:06:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:50,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397303222] [2024-11-07 11:06:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:50,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:50,588 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 11:06:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:50,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397303222] [2024-11-07 11:06:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397303222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:06:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79133654] [2024-11-07 11:06:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:50,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:50,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:06:50,594 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 11:06:50,597 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 11:06:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:50,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:06:50,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:06:50,765 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 11:06:50,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:06:50,961 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 11:06:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79133654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:06:50,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:06:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-07 11:06:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337185908] [2024-11-07 11:06:50,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:06:50,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:06:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:06:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:06:50,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:50,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 514 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:50,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:50,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:50,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:51,533 INFO L124 PetriNetUnfolderBase]: 607/1136 cut-off events. [2024-11-07 11:06:51,533 INFO L125 PetriNetUnfolderBase]: For 10981/10993 co-relation queries the response was YES. [2024-11-07 11:06:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1136 events. 607/1136 cut-off events. For 10981/10993 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5008 event pairs, 149 based on Foata normal form. 75/1210 useless extension candidates. Maximal degree in co-relation 4852. Up to 522 conditions per place. [2024-11-07 11:06:51,544 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 19 changer transitions 67/156 dead transitions. [2024-11-07 11:06:51,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1590 flow [2024-11-07 11:06:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 11:06:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 11:06:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-11-07 11:06:51,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-11-07 11:06:51,547 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 514 flow. Second operand 19 states and 231 transitions. [2024-11-07 11:06:51,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1590 flow [2024-11-07 11:06:51,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 156 transitions, 1489 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-07 11:06:51,595 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 646 flow [2024-11-07 11:06:51,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=646, PETRI_PLACES=92, PETRI_TRANSITIONS=56} [2024-11-07 11:06:51,598 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-11-07 11:06:51,599 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 646 flow [2024-11-07 11:06:51,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:51,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:51,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:51,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 11:06:51,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:51,801 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 11:06:51,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:51,802 INFO L85 PathProgramCache]: Analyzing trace with hash -827216793, now seen corresponding path program 2 times [2024-11-07 11:06:51,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498689080] [2024-11-07 11:06:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:51,947 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 11:06:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498689080] [2024-11-07 11:06:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498689080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:06:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825644155] [2024-11-07 11:06:51,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:06:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:06:51,951 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 11:06:51,953 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 11:06:52,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:06:52,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:06:52,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 11:06:52,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:06:52,069 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 11:06:52,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:06:52,215 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 11:06:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825644155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:06:52,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:06:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-07 11:06:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577059640] [2024-11-07 11:06:52,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:06:52,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 11:06:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 11:06:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-07 11:06:52,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:52,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 56 transitions, 646 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:52,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:52,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:52,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:53,015 INFO L124 PetriNetUnfolderBase]: 895/1655 cut-off events. [2024-11-07 11:06:53,016 INFO L125 PetriNetUnfolderBase]: For 37310/37322 co-relation queries the response was YES. [2024-11-07 11:06:53,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9389 conditions, 1655 events. 895/1655 cut-off events. For 37310/37322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8056 event pairs, 68 based on Foata normal form. 84/1738 useless extension candidates. Maximal degree in co-relation 9342. Up to 315 conditions per place. [2024-11-07 11:06:53,030 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 49 changer transitions 80/220 dead transitions. [2024-11-07 11:06:53,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 220 transitions, 2852 flow [2024-11-07 11:06:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-07 11:06:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-07 11:06:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-11-07 11:06:53,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-11-07 11:06:53,034 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 646 flow. Second operand 27 states and 334 transitions. [2024-11-07 11:06:53,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 220 transitions, 2852 flow [2024-11-07 11:06:53,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 220 transitions, 2305 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-11-07 11:06:53,067 INFO L231 Difference]: Finished difference. Result has 118 places, 72 transitions, 1051 flow [2024-11-07 11:06:53,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1051, PETRI_PLACES=118, PETRI_TRANSITIONS=72} [2024-11-07 11:06:53,068 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-07 11:06:53,069 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 72 transitions, 1051 flow [2024-11-07 11:06:53,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:53,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:53,069 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:53,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 11:06:53,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:53,274 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 11:06:53,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1859448120, now seen corresponding path program 1 times [2024-11-07 11:06:53,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:53,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977726021] [2024-11-07 11:06:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:53,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977726021] [2024-11-07 11:06:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977726021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:06:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474816585] [2024-11-07 11:06:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:06:53,426 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 11:06:53,427 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 11:06:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:53,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:06:53,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:06:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:53,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:06:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474816585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:06:53,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:06:53,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-07 11:06:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150985632] [2024-11-07 11:06:53,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:06:53,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:06:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:06:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:06:53,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:53,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 72 transitions, 1051 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:53,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:53,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:53,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:54,604 INFO L124 PetriNetUnfolderBase]: 1129/2124 cut-off events. [2024-11-07 11:06:54,604 INFO L125 PetriNetUnfolderBase]: For 87490/87496 co-relation queries the response was YES. [2024-11-07 11:06:54,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 2124 events. 1129/2124 cut-off events. For 87490/87496 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11125 event pairs, 153 based on Foata normal form. 69/2190 useless extension candidates. Maximal degree in co-relation 14720. Up to 490 conditions per place. [2024-11-07 11:06:54,628 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 53 changer transitions 67/222 dead transitions. [2024-11-07 11:06:54,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 222 transitions, 3667 flow [2024-11-07 11:06:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 11:06:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-07 11:06:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-11-07 11:06:54,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-07 11:06:54,631 INFO L175 Difference]: Start difference. First operand has 118 places, 72 transitions, 1051 flow. Second operand 25 states and 309 transitions. [2024-11-07 11:06:54,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 222 transitions, 3667 flow [2024-11-07 11:06:54,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 222 transitions, 3084 flow, removed 275 selfloop flow, removed 13 redundant places. [2024-11-07 11:06:54,713 INFO L231 Difference]: Finished difference. Result has 136 places, 83 transitions, 1339 flow [2024-11-07 11:06:54,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1339, PETRI_PLACES=136, PETRI_TRANSITIONS=83} [2024-11-07 11:06:54,713 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2024-11-07 11:06:54,714 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 83 transitions, 1339 flow [2024-11-07 11:06:54,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:54,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:54,714 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:54,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 11:06:54,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:54,914 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 11:06:54,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2089657410, now seen corresponding path program 2 times [2024-11-07 11:06:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:54,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27678073] [2024-11-07 11:06:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:55,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27678073] [2024-11-07 11:06:55,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27678073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:06:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627180944] [2024-11-07 11:06:55,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:06:55,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:55,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:06:55,039 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 11:06:55,060 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 11:06:55,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:06:55,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:06:55,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 11:06:55,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:06:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:55,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:06:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627180944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:06:55,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:06:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-07 11:06:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276535915] [2024-11-07 11:06:55,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:06:55,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 11:06:55,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 11:06:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-07 11:06:55,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:55,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 83 transitions, 1339 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:55,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:55,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:56,289 INFO L124 PetriNetUnfolderBase]: 1246/2377 cut-off events. [2024-11-07 11:06:56,289 INFO L125 PetriNetUnfolderBase]: For 139322/139328 co-relation queries the response was YES. [2024-11-07 11:06:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17840 conditions, 2377 events. 1246/2377 cut-off events. For 139322/139328 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12696 event pairs, 38 based on Foata normal form. 141/2517 useless extension candidates. Maximal degree in co-relation 17775. Up to 501 conditions per place. [2024-11-07 11:06:56,351 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 92 selfloop transitions, 80 changer transitions 102/277 dead transitions. [2024-11-07 11:06:56,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 277 transitions, 5245 flow [2024-11-07 11:06:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-07 11:06:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-07 11:06:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 369 transitions. [2024-11-07 11:06:56,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-11-07 11:06:56,353 INFO L175 Difference]: Start difference. First operand has 136 places, 83 transitions, 1339 flow. Second operand 30 states and 369 transitions. [2024-11-07 11:06:56,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 277 transitions, 5245 flow [2024-11-07 11:06:56,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 4471 flow, removed 349 selfloop flow, removed 18 redundant places. [2024-11-07 11:06:56,505 INFO L231 Difference]: Finished difference. Result has 159 places, 104 transitions, 1972 flow [2024-11-07 11:06:56,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1972, PETRI_PLACES=159, PETRI_TRANSITIONS=104} [2024-11-07 11:06:56,507 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2024-11-07 11:06:56,507 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 104 transitions, 1972 flow [2024-11-07 11:06:56,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:56,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:56,508 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:56,525 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 11:06:56,712 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,SelfDestructingSolverStorable9 [2024-11-07 11:06:56,713 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 11:06:56,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash -876448546, now seen corresponding path program 3 times [2024-11-07 11:06:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:56,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054112334] [2024-11-07 11:06:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:06:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:56,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:06:56,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054112334] [2024-11-07 11:06:56,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054112334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:06:56,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703315539] [2024-11-07 11:06:56,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:06:56,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:06:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:06:56,928 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 11:06:56,929 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 11:06:56,990 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 11:06:56,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:06:56,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 11:06:56,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:06:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:57,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:06:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:06:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703315539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:06:57,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:06:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-07 11:06:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272661781] [2024-11-07 11:06:57,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:06:57,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 11:06:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:06:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 11:06:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-07 11:06:57,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:06:57,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 104 transitions, 1972 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:57,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:06:57,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:06:57,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:06:58,985 INFO L124 PetriNetUnfolderBase]: 1714/3171 cut-off events. [2024-11-07 11:06:58,985 INFO L125 PetriNetUnfolderBase]: For 260933/260939 co-relation queries the response was YES. [2024-11-07 11:06:59,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27544 conditions, 3171 events. 1714/3171 cut-off events. For 260933/260939 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 15980 event pairs, 42 based on Foata normal form. 96/3266 useless extension candidates. Maximal degree in co-relation 27469. Up to 678 conditions per place. [2024-11-07 11:06:59,026 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 142 selfloop transitions, 114 changer transitions 135/394 dead transitions. [2024-11-07 11:06:59,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 394 transitions, 8422 flow [2024-11-07 11:06:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-07 11:06:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-07 11:06:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 565 transitions. [2024-11-07 11:06:59,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5117753623188406 [2024-11-07 11:06:59,031 INFO L175 Difference]: Start difference. First operand has 159 places, 104 transitions, 1972 flow. Second operand 46 states and 565 transitions. [2024-11-07 11:06:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 394 transitions, 8422 flow [2024-11-07 11:06:59,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 394 transitions, 7107 flow, removed 626 selfloop flow, removed 20 redundant places. [2024-11-07 11:06:59,458 INFO L231 Difference]: Finished difference. Result has 204 places, 138 transitions, 3067 flow [2024-11-07 11:06:59,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3067, PETRI_PLACES=204, PETRI_TRANSITIONS=138} [2024-11-07 11:06:59,459 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2024-11-07 11:06:59,459 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 138 transitions, 3067 flow [2024-11-07 11:06:59,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:06:59,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:06:59,460 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:06:59,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 11:06:59,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 11:06:59,661 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 11:06:59,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:06:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash -336419707, now seen corresponding path program 4 times [2024-11-07 11:06:59,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:06:59,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979337339] [2024-11-07 11:06:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:06:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:06:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:07:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979337339] [2024-11-07 11:07:00,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979337339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:07:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142026825] [2024-11-07 11:07:00,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 11:07:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:07:00,067 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 11:07:00,069 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 11:07:00,141 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 11:07:00,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:07:00,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 11:07:00,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:07:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:00,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:07:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142026825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:07:00,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:07:00,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-11-07 11:07:00,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788380754] [2024-11-07 11:07:00,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:07:00,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-07 11:07:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:07:00,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-07 11:07:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2024-11-07 11:07:00,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:07:00,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 138 transitions, 3067 flow. Second operand has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:00,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:07:00,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:07:00,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:07:02,988 INFO L124 PetriNetUnfolderBase]: 2218/4260 cut-off events. [2024-11-07 11:07:02,989 INFO L125 PetriNetUnfolderBase]: For 591236/591242 co-relation queries the response was YES. [2024-11-07 11:07:03,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45837 conditions, 4260 events. 2218/4260 cut-off events. For 591236/591242 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 22124 event pairs, 421 based on Foata normal form. 159/4416 useless extension candidates. Maximal degree in co-relation 45745. Up to 1483 conditions per place. [2024-11-07 11:07:03,040 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 190 selfloop transitions, 101 changer transitions 189/483 dead transitions. [2024-11-07 11:07:03,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 483 transitions, 13822 flow [2024-11-07 11:07:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-07 11:07:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-07 11:07:03,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 653 transitions. [2024-11-07 11:07:03,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4946969696969697 [2024-11-07 11:07:03,043 INFO L175 Difference]: Start difference. First operand has 204 places, 138 transitions, 3067 flow. Second operand 55 states and 653 transitions. [2024-11-07 11:07:03,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 483 transitions, 13822 flow [2024-11-07 11:07:03,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 483 transitions, 10112 flow, removed 1813 selfloop flow, removed 29 redundant places. [2024-11-07 11:07:03,651 INFO L231 Difference]: Finished difference. Result has 252 places, 180 transitions, 3965 flow [2024-11-07 11:07:03,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3965, PETRI_PLACES=252, PETRI_TRANSITIONS=180} [2024-11-07 11:07:03,652 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 226 predicate places. [2024-11-07 11:07:03,652 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 180 transitions, 3965 flow [2024-11-07 11:07:03,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:03,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:07:03,652 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:07:03,666 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 11:07:03,853 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,SelfDestructingSolverStorable11 [2024-11-07 11:07:03,853 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 11:07:03,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:07:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2049425977, now seen corresponding path program 5 times [2024-11-07 11:07:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:07:03,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167014793] [2024-11-07 11:07:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:07:03,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:07:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:04,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:07:04,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167014793] [2024-11-07 11:07:04,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167014793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:07:04,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047139729] [2024-11-07 11:07:04,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 11:07:04,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:07:04,373 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 11:07:04,375 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 11:07:04,438 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-07 11:07:04,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:07:04,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 11:07:04,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:07:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:04,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:07:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047139729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:07:05,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:07:05,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-07 11:07:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108729516] [2024-11-07 11:07:05,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:07:05,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-07 11:07:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:07:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-07 11:07:05,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-11-07 11:07:05,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:07:05,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 180 transitions, 3965 flow. Second operand has 36 states, 36 states have (on average 7.083333333333333) internal successors, (255), 36 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:05,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:07:05,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:07:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:07:07,556 INFO L124 PetriNetUnfolderBase]: 2767/5513 cut-off events. [2024-11-07 11:07:07,556 INFO L125 PetriNetUnfolderBase]: For 986686/986692 co-relation queries the response was YES. [2024-11-07 11:07:07,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61510 conditions, 5513 events. 2767/5513 cut-off events. For 986686/986692 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 31211 event pairs, 194 based on Foata normal form. 159/5671 useless extension candidates. Maximal degree in co-relation 61403. Up to 1380 conditions per place. [2024-11-07 11:07:07,613 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 180 selfloop transitions, 193 changer transitions 201/577 dead transitions. [2024-11-07 11:07:07,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 577 transitions, 16555 flow [2024-11-07 11:07:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-07 11:07:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-07 11:07:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 730 transitions. [2024-11-07 11:07:07,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49863387978142076 [2024-11-07 11:07:07,616 INFO L175 Difference]: Start difference. First operand has 252 places, 180 transitions, 3965 flow. Second operand 61 states and 730 transitions. [2024-11-07 11:07:07,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 577 transitions, 16555 flow [2024-11-07 11:07:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 577 transitions, 14025 flow, removed 1228 selfloop flow, removed 31 redundant places. [2024-11-07 11:07:09,149 INFO L231 Difference]: Finished difference. Result has 300 places, 241 transitions, 5990 flow [2024-11-07 11:07:09,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=5990, PETRI_PLACES=300, PETRI_TRANSITIONS=241} [2024-11-07 11:07:09,150 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 274 predicate places. [2024-11-07 11:07:09,150 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 241 transitions, 5990 flow [2024-11-07 11:07:09,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.083333333333333) internal successors, (255), 36 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:09,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:07:09,150 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:07:09,163 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 11:07:09,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:09,351 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 11:07:09,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:07:09,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1408442027, now seen corresponding path program 6 times [2024-11-07 11:07:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:07:09,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320404502] [2024-11-07 11:07:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:07:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:07:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:09,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:07:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320404502] [2024-11-07 11:07:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320404502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:07:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584839145] [2024-11-07 11:07:09,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 11:07:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:07:09,633 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 11:07:09,635 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 11:07:09,698 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-07 11:07:09,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:07:09,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:07:09,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:07:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:09,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:07:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:10,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584839145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:07:10,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:07:10,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2024-11-07 11:07:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249686977] [2024-11-07 11:07:10,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:07:10,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-07 11:07:10,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:07:10,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-07 11:07:10,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2024-11-07 11:07:10,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:07:10,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 241 transitions, 5990 flow. Second operand has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:10,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:07:10,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:07:10,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:07:13,684 INFO L124 PetriNetUnfolderBase]: 3694/7306 cut-off events. [2024-11-07 11:07:13,685 INFO L125 PetriNetUnfolderBase]: For 1943250/1943256 co-relation queries the response was YES. [2024-11-07 11:07:13,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95686 conditions, 7306 events. 3694/7306 cut-off events. For 1943250/1943256 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 42737 event pairs, 83 based on Foata normal form. 159/7462 useless extension candidates. Maximal degree in co-relation 95561. Up to 1827 conditions per place. [2024-11-07 11:07:13,820 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 226 selfloop transitions, 274 changer transitions 205/708 dead transitions. [2024-11-07 11:07:13,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 708 transitions, 23646 flow [2024-11-07 11:07:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-07 11:07:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-11-07 11:07:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 868 transitions. [2024-11-07 11:07:13,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5093896713615024 [2024-11-07 11:07:13,823 INFO L175 Difference]: Start difference. First operand has 300 places, 241 transitions, 5990 flow. Second operand 71 states and 868 transitions. [2024-11-07 11:07:13,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 708 transitions, 23646 flow [2024-11-07 11:07:16,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 708 transitions, 19791 flow, removed 1881 selfloop flow, removed 31 redundant places. [2024-11-07 11:07:16,297 INFO L231 Difference]: Finished difference. Result has 364 places, 302 transitions, 8507 flow [2024-11-07 11:07:16,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4531, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=8507, PETRI_PLACES=364, PETRI_TRANSITIONS=302} [2024-11-07 11:07:16,298 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 338 predicate places. [2024-11-07 11:07:16,298 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 302 transitions, 8507 flow [2024-11-07 11:07:16,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.057142857142857) internal successors, (247), 35 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:16,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:07:16,299 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:07:16,311 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 11:07:16,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:16,499 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 11:07:16,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:07:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2127010885, now seen corresponding path program 7 times [2024-11-07 11:07:16,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:07:16,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978879647] [2024-11-07 11:07:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:07:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:07:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:16,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:07:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978879647] [2024-11-07 11:07:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978879647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:07:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670204056] [2024-11-07 11:07:16,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 11:07:16,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:16,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:07:16,858 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 11:07:16,860 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 11:07:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:16,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 11:07:16,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:07:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:17,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:07:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670204056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:07:17,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:07:17,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-07 11:07:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129266031] [2024-11-07 11:07:17,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:07:17,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-07 11:07:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:07:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-07 11:07:17,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2024-11-07 11:07:17,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:07:17,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 302 transitions, 8507 flow. Second operand has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:17,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:07:17,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:07:17,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:07:23,257 INFO L124 PetriNetUnfolderBase]: 5170/10176 cut-off events. [2024-11-07 11:07:23,258 INFO L125 PetriNetUnfolderBase]: For 4206677/4206683 co-relation queries the response was YES. [2024-11-07 11:07:23,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160013 conditions, 10176 events. 5170/10176 cut-off events. For 4206677/4206683 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 59641 event pairs, 52 based on Foata normal form. 330/10505 useless extension candidates. Maximal degree in co-relation 159862. Up to 2574 conditions per place. [2024-11-07 11:07:23,371 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 314 selfloop transitions, 388 changer transitions 335/1040 dead transitions. [2024-11-07 11:07:23,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1040 transitions, 42789 flow [2024-11-07 11:07:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-07 11:07:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-07 11:07:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1297 transitions. [2024-11-07 11:07:23,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098270440251572 [2024-11-07 11:07:23,374 INFO L175 Difference]: Start difference. First operand has 364 places, 302 transitions, 8507 flow. Second operand 106 states and 1297 transitions. [2024-11-07 11:07:23,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1040 transitions, 42789 flow [2024-11-07 11:07:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1040 transitions, 34169 flow, removed 4215 selfloop flow, removed 36 redundant places. [2024-11-07 11:07:27,795 INFO L231 Difference]: Finished difference. Result has 481 places, 416 transitions, 13673 flow [2024-11-07 11:07:27,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6103, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=13673, PETRI_PLACES=481, PETRI_TRANSITIONS=416} [2024-11-07 11:07:27,796 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 455 predicate places. [2024-11-07 11:07:27,796 INFO L471 AbstractCegarLoop]: Abstraction has has 481 places, 416 transitions, 13673 flow [2024-11-07 11:07:27,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.021739130434782) internal successors, (323), 46 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:27,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:07:27,796 INFO L204 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:07:27,809 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 11:07:27,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:27,997 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:07:27,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:07:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash 174493553, now seen corresponding path program 8 times [2024-11-07 11:07:27,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:07:27,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77945513] [2024-11-07 11:07:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:07:27,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:07:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:07:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77945513] [2024-11-07 11:07:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77945513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:07:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487857606] [2024-11-07 11:07:28,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 11:07:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:07:28,952 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 11:07:28,953 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 11:07:29,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 11:07:29,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:07:29,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-07 11:07:29,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:07:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:29,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:07:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 937 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:30,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487857606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:07:30,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:07:30,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 80 [2024-11-07 11:07:30,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164883647] [2024-11-07 11:07:30,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:07:30,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-07 11:07:30,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:07:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-07 11:07:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=4979, Unknown=0, NotChecked=0, Total=6480 [2024-11-07 11:07:30,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:07:30,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 416 transitions, 13673 flow. Second operand has 81 states, 81 states have (on average 7.0246913580246915) internal successors, (569), 81 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:30,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:07:30,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:07:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:07:37,319 INFO L124 PetriNetUnfolderBase]: 5692/11178 cut-off events. [2024-11-07 11:07:37,319 INFO L125 PetriNetUnfolderBase]: For 6361324/6361330 co-relation queries the response was YES. [2024-11-07 11:07:37,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186408 conditions, 11178 events. 5692/11178 cut-off events. For 6361324/6361330 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 65312 event pairs, 65 based on Foata normal form. 42/11217 useless extension candidates. Maximal degree in co-relation 186210. Up to 2661 conditions per place. [2024-11-07 11:07:37,483 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 308 selfloop transitions, 454 changer transitions 181/946 dead transitions. [2024-11-07 11:07:37,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 946 transitions, 38256 flow [2024-11-07 11:07:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-07 11:07:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-07 11:07:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1015 transitions. [2024-11-07 11:07:37,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-11-07 11:07:37,486 INFO L175 Difference]: Start difference. First operand has 481 places, 416 transitions, 13673 flow. Second operand 84 states and 1015 transitions. [2024-11-07 11:07:37,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 946 transitions, 38256 flow [2024-11-07 11:07:53,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 946 transitions, 27814 flow, removed 5029 selfloop flow, removed 57 redundant places. [2024-11-07 11:07:53,934 INFO L231 Difference]: Finished difference. Result has 496 places, 488 transitions, 11832 flow [2024-11-07 11:07:53,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8659, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=11832, PETRI_PLACES=496, PETRI_TRANSITIONS=488} [2024-11-07 11:07:53,935 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 470 predicate places. [2024-11-07 11:07:53,935 INFO L471 AbstractCegarLoop]: Abstraction has has 496 places, 488 transitions, 11832 flow [2024-11-07 11:07:53,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 7.0246913580246915) internal successors, (569), 81 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:53,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 11:07:53,935 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:07:53,950 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 11:07:54,136 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,SelfDestructingSolverStorable15 [2024-11-07 11:07:54,136 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-07 11:07:54,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:07:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1707013606, now seen corresponding path program 9 times [2024-11-07 11:07:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:07:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310962106] [2024-11-07 11:07:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:07:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:07:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:07:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:07:55,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310962106] [2024-11-07 11:07:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310962106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 11:07:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443927855] [2024-11-07 11:07:55,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 11:07:55,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 11:07:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:07:55,014 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 11:07:55,015 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 11:07:55,091 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-07 11:07:55,091 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 11:07:55,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-07 11:07:55,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 11:07:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:55,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 11:07:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 11:07:55,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443927855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 11:07:55,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 11:07:55,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-11-07 11:07:55,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329778735] [2024-11-07 11:07:55,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 11:07:55,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-07 11:07:55,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:07:55,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-07 11:07:55,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2024-11-07 11:07:55,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 11:07:55,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 488 transitions, 11832 flow. Second operand has 46 states, 46 states have (on average 6.978260869565218) internal successors, (321), 46 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 11:07:55,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 11:07:55,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 11:07:55,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 11:08:02,168 INFO L124 PetriNetUnfolderBase]: 5728/11275 cut-off events. [2024-11-07 11:08:02,168 INFO L125 PetriNetUnfolderBase]: For 5125694/5125700 co-relation queries the response was YES. [2024-11-07 11:08:02,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161740 conditions, 11275 events. 5728/11275 cut-off events. For 5125694/5125700 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 65771 event pairs, 38 based on Foata normal form. 33/11307 useless extension candidates. Maximal degree in co-relation 161553. Up to 2691 conditions per place. [2024-11-07 11:08:02,353 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 320 selfloop transitions, 463 changer transitions 183/969 dead transitions. [2024-11-07 11:08:02,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 969 transitions, 30201 flow [2024-11-07 11:08:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-07 11:08:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-07 11:08:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1059 transitions. [2024-11-07 11:08:02,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5014204545454546 [2024-11-07 11:08:02,356 INFO L175 Difference]: Start difference. First operand has 496 places, 488 transitions, 11832 flow. Second operand 88 states and 1059 transitions. [2024-11-07 11:08:02,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 969 transitions, 30201 flow