./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:36:59,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:36:59,457 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:36:59,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:36:59,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:36:59,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:36:59,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:36:59,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:36:59,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:36:59,479 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:36:59,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:36:59,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:36:59,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:36:59,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:36:59,480 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:36:59,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:36:59,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:36:59,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:36:59,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:36:59,481 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 -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2025-01-09 16:36:59,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:36:59,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:36:59,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:36:59,744 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:36:59,745 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:36:59,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2025-01-09 16:37:00,942 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5212016c1/32afe6bc0d004a69ab9bd218cc3c4d14/FLAG1cb8b7f4d [2025-01-09 16:37:01,164 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:37:01,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2025-01-09 16:37:01,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5212016c1/32afe6bc0d004a69ab9bd218cc3c4d14/FLAG1cb8b7f4d [2025-01-09 16:37:01,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5212016c1/32afe6bc0d004a69ab9bd218cc3c4d14 [2025-01-09 16:37:01,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:37:01,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:37:01,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:37:01,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:37:01,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:37:01,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643b2753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01, skipping insertion in model container [2025-01-09 16:37:01,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:37:01,349 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2025-01-09 16:37:01,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:37:01,363 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:37:01,385 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2025-01-09 16:37:01,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:37:01,400 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:37:01,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01 WrapperNode [2025-01-09 16:37:01,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:37:01,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:37:01,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:37:01,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:37:01,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,431 INFO L138 Inliner]: procedures = 24, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2025-01-09 16:37:01,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:37:01,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:37:01,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:37:01,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:37:01,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,457 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]. [2025-01-09 16:37:01,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,463 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:37:01,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:37:01,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:37:01,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:37:01,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (1/1) ... [2025-01-09 16:37:01,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:01,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:01,512 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) [2025-01-09 16:37:01,516 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 [2025-01-09 16:37:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:37:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:37:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:37:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:37:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:37:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:37:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:37:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-09 16:37:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-09 16:37:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:37:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-01-09 16:37:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-01-09 16:37:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-01-09 16:37:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-01-09 16:37:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:37:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:37:01,538 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:37:01,626 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:37:01,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:37:01,812 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:37:01,813 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:37:01,930 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:37:01,930 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:37:01,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:37:01 BoogieIcfgContainer [2025-01-09 16:37:01,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:37:01,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:37:01,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:37:01,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:37:01,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:37:01" (1/3) ... [2025-01-09 16:37:01,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31411a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:37:01, skipping insertion in model container [2025-01-09 16:37:01,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:01" (2/3) ... [2025-01-09 16:37:01,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31411a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:37:01, skipping insertion in model container [2025-01-09 16:37:01,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:37:01" (3/3) ... [2025-01-09 16:37:01,939 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2025-01-09 16:37:01,950 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:37:01,951 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp3x3-opt.wvr.c that has 7 procedures, 41 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 16:37:01,951 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:37:02,014 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-01-09 16:37:02,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2025-01-09 16:37:02,077 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-01-09 16:37:02,081 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-09 16:37:02,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-01-09 16:37:02,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2025-01-09 16:37:02,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2025-01-09 16:37:02,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:37:02,110 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;@273ebc2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:37:02,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-01-09 16:37:02,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:37:02,129 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-01-09 16:37:02,129 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-09 16:37:02,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:02,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:02,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:02,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1803950210, now seen corresponding path program 1 times [2025-01-09 16:37:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:02,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097497606] [2025-01-09 16:37:02,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:02,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 16:37:02,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 16:37:02,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:02,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097497606] [2025-01-09 16:37:02,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097497606] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:37:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66756222] [2025-01-09 16:37:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:02,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:37:02,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:02,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:37:02,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:37:02,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:02,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:02,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:02,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:02,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:04,067 INFO L124 PetriNetUnfolderBase]: 21795/25333 cut-off events. [2025-01-09 16:37:04,067 INFO L125 PetriNetUnfolderBase]: For 1331/1331 co-relation queries the response was YES. [2025-01-09 16:37:04,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51807 conditions, 25333 events. 21795/25333 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 88564 event pairs, 3999 based on Foata normal form. 1/13924 useless extension candidates. Maximal degree in co-relation 44813. Up to 16365 conditions per place. [2025-01-09 16:37:04,235 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 49 selfloop transitions, 3 changer transitions 1/60 dead transitions. [2025-01-09 16:37:04,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 283 flow [2025-01-09 16:37:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:37:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:37:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-01-09 16:37:04,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2025-01-09 16:37:04,252 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 93 transitions. [2025-01-09 16:37:04,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 283 flow [2025-01-09 16:37:04,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 245 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-01-09 16:37:04,305 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 109 flow [2025-01-09 16:37:04,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2025-01-09 16:37:04,313 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2025-01-09 16:37:04,314 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 109 flow [2025-01-09 16:37:04,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:04,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:04,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:04,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:37:04,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:04,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1072024305, now seen corresponding path program 1 times [2025-01-09 16:37:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:04,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225817305] [2025-01-09 16:37:04,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:04,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:04,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:04,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:04,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:04,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:37:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225817305] [2025-01-09 16:37:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225817305] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:04,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:04,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:37:04,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112228707] [2025-01-09 16:37:04,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:04,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:37:04,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:04,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:37:04,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:37:04,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:04,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:04,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:04,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:04,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:05,836 INFO L124 PetriNetUnfolderBase]: 28457/33201 cut-off events. [2025-01-09 16:37:05,836 INFO L125 PetriNetUnfolderBase]: For 4198/4198 co-relation queries the response was YES. [2025-01-09 16:37:05,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72531 conditions, 33201 events. 28457/33201 cut-off events. For 4198/4198 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 124673 event pairs, 4579 based on Foata normal form. 1/22659 useless extension candidates. Maximal degree in co-relation 23650. Up to 23665 conditions per place. [2025-01-09 16:37:05,995 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 57 selfloop transitions, 3 changer transitions 5/72 dead transitions. [2025-01-09 16:37:05,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 72 transitions, 322 flow [2025-01-09 16:37:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:37:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:37:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-01-09 16:37:05,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2025-01-09 16:37:05,998 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 109 flow. Second operand 3 states and 101 transitions. [2025-01-09 16:37:05,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 72 transitions, 322 flow [2025-01-09 16:37:05,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 72 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:06,001 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 125 flow [2025-01-09 16:37:06,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2025-01-09 16:37:06,003 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2025-01-09 16:37:06,003 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 125 flow [2025-01-09 16:37:06,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:06,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:06,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:06,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:37:06,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:06,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1701900032, now seen corresponding path program 1 times [2025-01-09 16:37:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325991079] [2025-01-09 16:37:06,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:06,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-09 16:37:06,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 16:37:06,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:06,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:06,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:06,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325991079] [2025-01-09 16:37:06,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325991079] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:06,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:06,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:37:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035157896] [2025-01-09 16:37:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:06,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:37:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:06,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:37:06,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:37:06,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:06,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:06,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:06,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:06,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:07,690 INFO L124 PetriNetUnfolderBase]: 36141/42553 cut-off events. [2025-01-09 16:37:07,691 INFO L125 PetriNetUnfolderBase]: For 12214/12214 co-relation queries the response was YES. [2025-01-09 16:37:07,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99429 conditions, 42553 events. 36141/42553 cut-off events. For 12214/12214 co-relation queries the response was YES. Maximal size of possible extension queue 1536. Compared 168898 event pairs, 5700 based on Foata normal form. 1/35597 useless extension candidates. Maximal degree in co-relation 41133. Up to 31100 conditions per place. [2025-01-09 16:37:07,910 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 59 selfloop transitions, 3 changer transitions 3/72 dead transitions. [2025-01-09 16:37:07,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 340 flow [2025-01-09 16:37:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:37:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:37:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-01-09 16:37:07,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2025-01-09 16:37:07,912 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 125 flow. Second operand 3 states and 97 transitions. [2025-01-09 16:37:07,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 340 flow [2025-01-09 16:37:07,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:07,916 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 141 flow [2025-01-09 16:37:07,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2025-01-09 16:37:07,916 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2025-01-09 16:37:07,916 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 141 flow [2025-01-09 16:37:07,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:07,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:07,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:07,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:37:07,917 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:07,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash -69505019, now seen corresponding path program 1 times [2025-01-09 16:37:07,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:07,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365998063] [2025-01-09 16:37:07,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:07,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:37:07,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:07,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:07,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:08,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:08,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365998063] [2025-01-09 16:37:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365998063] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094313877] [2025-01-09 16:37:08,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:08,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:08,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:08,035 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) [2025-01-09 16:37:08,037 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 [2025-01-09 16:37:08,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:37:08,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:08,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:08,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:08,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:08,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:08,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:08,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094313877] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:08,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:08,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-01-09 16:37:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766270484] [2025-01-09 16:37:08,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:08,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:37:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:08,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:37:08,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:37:08,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:08,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:08,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:08,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:08,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:10,205 INFO L124 PetriNetUnfolderBase]: 40769/48373 cut-off events. [2025-01-09 16:37:10,206 INFO L125 PetriNetUnfolderBase]: For 18328/18328 co-relation queries the response was YES. [2025-01-09 16:37:10,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121671 conditions, 48373 events. 40769/48373 cut-off events. For 18328/18328 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 204827 event pairs, 5944 based on Foata normal form. 981/49300 useless extension candidates. Maximal degree in co-relation 40746. Up to 22890 conditions per place. [2025-01-09 16:37:10,376 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 106 selfloop transitions, 6 changer transitions 11/130 dead transitions. [2025-01-09 16:37:10,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 130 transitions, 643 flow [2025-01-09 16:37:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-01-09 16:37:10,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2025-01-09 16:37:10,378 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 141 flow. Second operand 5 states and 175 transitions. [2025-01-09 16:37:10,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 130 transitions, 643 flow [2025-01-09 16:37:10,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 130 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:10,385 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 175 flow [2025-01-09 16:37:10,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2025-01-09 16:37:10,386 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2025-01-09 16:37:10,386 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 175 flow [2025-01-09 16:37:10,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:10,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:10,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:10,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:37:10,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:10,591 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:10,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -771410737, now seen corresponding path program 1 times [2025-01-09 16:37:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773537868] [2025-01-09 16:37:10,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:10,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:37:10,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:10,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:10,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773537868] [2025-01-09 16:37:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773537868] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:10,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:10,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:10,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649848699] [2025-01-09 16:37:10,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:10,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:10,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:10,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:10,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:10,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:10,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:10,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:10,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:10,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:12,910 INFO L124 PetriNetUnfolderBase]: 40703/48195 cut-off events. [2025-01-09 16:37:12,910 INFO L125 PetriNetUnfolderBase]: For 30122/30122 co-relation queries the response was YES. [2025-01-09 16:37:13,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132255 conditions, 48195 events. 40703/48195 cut-off events. For 30122/30122 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 201307 event pairs, 982 based on Foata normal form. 562/48741 useless extension candidates. Maximal degree in co-relation 51537. Up to 18355 conditions per place. [2025-01-09 16:37:13,100 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 84 selfloop transitions, 4 changer transitions 35/130 dead transitions. [2025-01-09 16:37:13,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 679 flow [2025-01-09 16:37:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2025-01-09 16:37:13,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2025-01-09 16:37:13,101 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 175 flow. Second operand 5 states and 169 transitions. [2025-01-09 16:37:13,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 679 flow [2025-01-09 16:37:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:13,261 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 183 flow [2025-01-09 16:37:13,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2025-01-09 16:37:13,262 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2025-01-09 16:37:13,262 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 183 flow [2025-01-09 16:37:13,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:13,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:13,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:13,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:37:13,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:13,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:13,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2087707581, now seen corresponding path program 2 times [2025-01-09 16:37:13,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:13,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281785192] [2025-01-09 16:37:13,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:13,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:13,274 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 16:37:13,283 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:13,284 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:13,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:13,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281785192] [2025-01-09 16:37:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281785192] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190990137] [2025-01-09 16:37:13,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:13,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:13,341 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) [2025-01-09 16:37:13,342 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 [2025-01-09 16:37:13,388 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 16:37:13,415 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:13,415 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:13,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:13,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:13,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:13,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190990137] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:13,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:13,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-01-09 16:37:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523339468] [2025-01-09 16:37:13,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:13,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:37:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:13,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:37:13,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:37:13,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:13,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:13,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:13,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:13,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:15,571 INFO L124 PetriNetUnfolderBase]: 30856/36814 cut-off events. [2025-01-09 16:37:15,571 INFO L125 PetriNetUnfolderBase]: For 42645/42645 co-relation queries the response was YES. [2025-01-09 16:37:15,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110198 conditions, 36814 events. 30856/36814 cut-off events. For 42645/42645 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 148935 event pairs, 1462 based on Foata normal form. 1450/38215 useless extension candidates. Maximal degree in co-relation 56975. Up to 6873 conditions per place. [2025-01-09 16:37:15,724 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 304 selfloop transitions, 41 changer transitions 30/382 dead transitions. [2025-01-09 16:37:15,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 382 transitions, 2396 flow [2025-01-09 16:37:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:37:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:37:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 535 transitions. [2025-01-09 16:37:15,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6841432225063938 [2025-01-09 16:37:15,726 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 183 flow. Second operand 17 states and 535 transitions. [2025-01-09 16:37:15,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 382 transitions, 2396 flow [2025-01-09 16:37:15,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 382 transitions, 2359 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:15,743 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 540 flow [2025-01-09 16:37:15,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=540, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2025-01-09 16:37:15,744 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2025-01-09 16:37:15,744 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 540 flow [2025-01-09 16:37:15,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:15,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:15,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:15,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:37:15,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:15,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:15,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1904691838, now seen corresponding path program 1 times [2025-01-09 16:37:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:15,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120404557] [2025-01-09 16:37:15,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:15,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:37:15,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:15,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:15,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120404557] [2025-01-09 16:37:16,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120404557] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:16,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:16,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889170807] [2025-01-09 16:37:16,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:16,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:16,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:16,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:16,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:16,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:16,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:16,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:16,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:18,536 INFO L124 PetriNetUnfolderBase]: 30444/36321 cut-off events. [2025-01-09 16:37:18,537 INFO L125 PetriNetUnfolderBase]: For 161356/161392 co-relation queries the response was YES. [2025-01-09 16:37:18,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168007 conditions, 36321 events. 30444/36321 cut-off events. For 161356/161392 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 147918 event pairs, 989 based on Foata normal form. 421/36711 useless extension candidates. Maximal degree in co-relation 93135. Up to 14267 conditions per place. [2025-01-09 16:37:18,753 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 122 selfloop transitions, 10 changer transitions 55/194 dead transitions. [2025-01-09 16:37:18,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 194 transitions, 1550 flow [2025-01-09 16:37:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-01-09 16:37:18,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-01-09 16:37:18,758 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 540 flow. Second operand 5 states and 161 transitions. [2025-01-09 16:37:18,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 194 transitions, 1550 flow [2025-01-09 16:37:19,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 194 transitions, 1496 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-01-09 16:37:19,479 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 537 flow [2025-01-09 16:37:19,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=537, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2025-01-09 16:37:19,479 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2025-01-09 16:37:19,479 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 537 flow [2025-01-09 16:37:19,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:19,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:19,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:19,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:37:19,480 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:19,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1890067064, now seen corresponding path program 2 times [2025-01-09 16:37:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:19,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978387939] [2025-01-09 16:37:19,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:19,486 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 16:37:19,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:19,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:19,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:19,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978387939] [2025-01-09 16:37:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978387939] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:19,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761527123] [2025-01-09 16:37:19,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:19,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:19,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:19,546 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) [2025-01-09 16:37:19,548 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 [2025-01-09 16:37:19,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-09 16:37:19,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:37:19,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:19,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:19,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:19,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:19,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:37:19,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761527123] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:19,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:19,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-01-09 16:37:19,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132733315] [2025-01-09 16:37:19,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:19,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:37:19,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:19,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:37:19,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:37:19,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:19,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 537 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:19,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:19,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:19,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:20,900 INFO L124 PetriNetUnfolderBase]: 19916/23681 cut-off events. [2025-01-09 16:37:20,900 INFO L125 PetriNetUnfolderBase]: For 153236/153240 co-relation queries the response was YES. [2025-01-09 16:37:21,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112440 conditions, 23681 events. 19916/23681 cut-off events. For 153236/153240 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 93196 event pairs, 735 based on Foata normal form. 701/24377 useless extension candidates. Maximal degree in co-relation 64674. Up to 17892 conditions per place. [2025-01-09 16:37:21,259 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 272 selfloop transitions, 6 changer transitions 0/285 dead transitions. [2025-01-09 16:37:21,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 285 transitions, 2362 flow [2025-01-09 16:37:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2025-01-09 16:37:21,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2025-01-09 16:37:21,260 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 537 flow. Second operand 5 states and 158 transitions. [2025-01-09 16:37:21,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 285 transitions, 2362 flow [2025-01-09 16:37:21,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 285 transitions, 2323 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:21,348 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 563 flow [2025-01-09 16:37:21,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2025-01-09 16:37:21,348 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2025-01-09 16:37:21,348 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 563 flow [2025-01-09 16:37:21,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:21,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:21,349 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:21,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:37:21,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:21,549 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:21,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1787799510, now seen corresponding path program 1 times [2025-01-09 16:37:21,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:21,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323147513] [2025-01-09 16:37:21,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:21,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 16:37:21,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:37:21,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:21,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:37:21,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323147513] [2025-01-09 16:37:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323147513] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:21,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:21,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766515121] [2025-01-09 16:37:21,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:21,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:21,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:21,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:21,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:21,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 563 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:21,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:21,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:21,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:23,074 INFO L124 PetriNetUnfolderBase]: 19713/23589 cut-off events. [2025-01-09 16:37:23,074 INFO L125 PetriNetUnfolderBase]: For 135805/135805 co-relation queries the response was YES. [2025-01-09 16:37:23,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117774 conditions, 23589 events. 19713/23589 cut-off events. For 135805/135805 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 89404 event pairs, 998 based on Foata normal form. 203/23766 useless extension candidates. Maximal degree in co-relation 101557. Up to 9384 conditions per place. [2025-01-09 16:37:23,283 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 127 selfloop transitions, 10 changer transitions 54/198 dead transitions. [2025-01-09 16:37:23,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 198 transitions, 1688 flow [2025-01-09 16:37:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2025-01-09 16:37:23,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2025-01-09 16:37:23,284 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 563 flow. Second operand 5 states and 153 transitions. [2025-01-09 16:37:23,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 198 transitions, 1688 flow [2025-01-09 16:37:23,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 198 transitions, 1655 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:23,639 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 585 flow [2025-01-09 16:37:23,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2025-01-09 16:37:23,639 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2025-01-09 16:37:23,640 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 585 flow [2025-01-09 16:37:23,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:23,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:23,640 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:23,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 16:37:23,640 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:23,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1619862008, now seen corresponding path program 2 times [2025-01-09 16:37:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:23,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886783703] [2025-01-09 16:37:23,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:23,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:37:23,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:37:23,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:23,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:37:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886783703] [2025-01-09 16:37:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886783703] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339820169] [2025-01-09 16:37:23,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:23,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:23,733 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) [2025-01-09 16:37:23,736 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 [2025-01-09 16:37:23,776 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-09 16:37:23,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 16:37:23,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:23,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:23,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:23,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:37:23,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:37:23,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339820169] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:23,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:23,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-01-09 16:37:23,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760562759] [2025-01-09 16:37:23,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:23,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:37:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:23,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:37:23,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:37:23,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:23,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:23,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:23,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:23,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:24,947 INFO L124 PetriNetUnfolderBase]: 13483/16182 cut-off events. [2025-01-09 16:37:24,947 INFO L125 PetriNetUnfolderBase]: For 93119/93119 co-relation queries the response was YES. [2025-01-09 16:37:25,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80218 conditions, 16182 events. 13483/16182 cut-off events. For 93119/93119 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 58389 event pairs, 999 based on Foata normal form. 404/16560 useless extension candidates. Maximal degree in co-relation 69720. Up to 10707 conditions per place. [2025-01-09 16:37:25,091 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 155 selfloop transitions, 12 changer transitions 0/174 dead transitions. [2025-01-09 16:37:25,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 174 transitions, 1468 flow [2025-01-09 16:37:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-01-09 16:37:25,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6347826086956522 [2025-01-09 16:37:25,092 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 585 flow. Second operand 5 states and 146 transitions. [2025-01-09 16:37:25,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 174 transitions, 1468 flow [2025-01-09 16:37:25,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 174 transitions, 1455 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:25,354 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 640 flow [2025-01-09 16:37:25,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=640, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2025-01-09 16:37:25,354 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2025-01-09 16:37:25,354 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 640 flow [2025-01-09 16:37:25,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:25,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:25,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:25,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:37:25,555 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 [2025-01-09 16:37:25,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:25,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1057766279, now seen corresponding path program 1 times [2025-01-09 16:37:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:25,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604433907] [2025-01-09 16:37:25,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:25,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:25,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 16:37:25,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:37:25,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:25,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:37:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:25,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604433907] [2025-01-09 16:37:25,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604433907] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:25,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636688478] [2025-01-09 16:37:25,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:25,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:25,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:25,620 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) [2025-01-09 16:37:25,622 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 [2025-01-09 16:37:25,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 16:37:25,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 16:37:25,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:25,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:25,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:25,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:37:25,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:37:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636688478] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:25,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-01-09 16:37:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210606955] [2025-01-09 16:37:25,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:25,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:37:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:25,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:37:25,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:37:25,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:25,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:25,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:25,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:25,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:26,642 INFO L124 PetriNetUnfolderBase]: 12943/15536 cut-off events. [2025-01-09 16:37:26,643 INFO L125 PetriNetUnfolderBase]: For 95042/95078 co-relation queries the response was YES. [2025-01-09 16:37:26,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80092 conditions, 15536 events. 12943/15536 cut-off events. For 95042/95078 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 55640 event pairs, 862 based on Foata normal form. 549/16068 useless extension candidates. Maximal degree in co-relation 69625. Up to 11160 conditions per place. [2025-01-09 16:37:26,787 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 173 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2025-01-09 16:37:26,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 192 transitions, 1719 flow [2025-01-09 16:37:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2025-01-09 16:37:26,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2025-01-09 16:37:26,789 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 640 flow. Second operand 5 states and 152 transitions. [2025-01-09 16:37:26,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 192 transitions, 1719 flow [2025-01-09 16:37:27,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1666 flow, removed 20 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:27,246 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 689 flow [2025-01-09 16:37:27,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2025-01-09 16:37:27,247 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2025-01-09 16:37:27,247 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 689 flow [2025-01-09 16:37:27,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:27,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:27,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:27,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 16:37:27,449 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 [2025-01-09 16:37:27,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:27,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:27,450 INFO L85 PathProgramCache]: Analyzing trace with hash -112015072, now seen corresponding path program 1 times [2025-01-09 16:37:27,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:27,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344815362] [2025-01-09 16:37:27,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:27,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:37:27,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:37:27,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:27,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:37:27,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:27,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344815362] [2025-01-09 16:37:27,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344815362] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:27,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837334336] [2025-01-09 16:37:27,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:27,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:27,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:27,910 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) [2025-01-09 16:37:27,911 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 [2025-01-09 16:37:27,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 16:37:28,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:37:28,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:28,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:28,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:37:28,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:37:28,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:37:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837334336] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:29,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2025-01-09 16:37:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100382401] [2025-01-09 16:37:29,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:29,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:37:29,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:29,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:37:29,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:37:29,250 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:29,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 689 flow. Second operand has 15 states, 15 states have (on average 19.4) internal successors, (291), 15 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:29,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:29,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:29,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:33,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:37:36,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:37:46,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:37:50,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:38:19,258 INFO L124 PetriNetUnfolderBase]: 92739/111756 cut-off events. [2025-01-09 16:38:19,258 INFO L125 PetriNetUnfolderBase]: For 943383/943383 co-relation queries the response was YES. [2025-01-09 16:38:20,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612042 conditions, 111756 events. 92739/111756 cut-off events. For 943383/943383 co-relation queries the response was YES. Maximal size of possible extension queue 3539. Compared 525885 event pairs, 677 based on Foata normal form. 650/112402 useless extension candidates. Maximal degree in co-relation 498114. Up to 22625 conditions per place. [2025-01-09 16:38:20,707 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 1358 selfloop transitions, 432 changer transitions 615/2412 dead transitions. [2025-01-09 16:38:20,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 2412 transitions, 24145 flow [2025-01-09 16:38:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-01-09 16:38:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2025-01-09 16:38:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 1902 transitions. [2025-01-09 16:38:20,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5992438563327032 [2025-01-09 16:38:20,712 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 689 flow. Second operand 69 states and 1902 transitions. [2025-01-09 16:38:20,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 2412 transitions, 24145 flow