./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:36:26,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:36:26,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:36:26,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:36:26,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:36:26,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:36:26,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:36:26,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:36:26,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:36:26,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:36:26,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:36:26,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:36:26,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:36:26,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:36:26,978 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:36:26,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:36:26,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:36:26,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:36:26,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:36:26,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:36:26,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:36:26,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:36:26,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:36:26,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:36:26,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:36:26,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:36:26,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:36:26,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:36:26,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:36:26,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:36:26,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:36:26,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:36:26,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:26,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:36:26,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:36:26,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:36:26,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:36:26,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:36:26,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:36:26,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:36:26,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:36:26,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:36:26,990 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2024-10-11 14:36:27,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:36:27,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:36:27,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:36:27,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:36:27,280 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:36:27,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-10-11 14:36:28,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:36:28,916 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:36:28,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-10-11 14:36:28,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f045a2884/1f4dea18a3f94659be04ce050260e035/FLAGa99d83f85 [2024-10-11 14:36:29,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f045a2884/1f4dea18a3f94659be04ce050260e035 [2024-10-11 14:36:29,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:36:29,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:36:29,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:29,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:36:29,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:36:29,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acbcc6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29, skipping insertion in model container [2024-10-11 14:36:29,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:36:29,536 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c[2459,2472] [2024-10-11 14:36:29,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:29,560 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:36:29,585 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c[2459,2472] [2024-10-11 14:36:29,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:29,612 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:36:29,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29 WrapperNode [2024-10-11 14:36:29,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:29,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:29,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:36:29,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:36:29,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,659 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 127 [2024-10-11 14:36:29,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:29,662 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:36:29,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:36:29,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:36:29,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,692 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 14:36:29,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:36:29,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:36:29,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:36:29,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:36:29,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (1/1) ... [2024-10-11 14:36:29,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:29,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:36:29,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:36:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:36:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:36:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:36:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:36:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:36:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:36:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:36:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:36:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:36:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:36:29,796 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:36:29,894 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:36:29,896 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:36:30,097 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:36:30,097 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:36:30,331 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:36:30,332 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 14:36:30,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:30 BoogieIcfgContainer [2024-10-11 14:36:30,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:36:30,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:36:30,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:36:30,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:36:30,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:36:29" (1/3) ... [2024-10-11 14:36:30,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36accdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:30, skipping insertion in model container [2024-10-11 14:36:30,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:29" (2/3) ... [2024-10-11 14:36:30,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36accdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:30, skipping insertion in model container [2024-10-11 14:36:30,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:30" (3/3) ... [2024-10-11 14:36:30,346 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2024-10-11 14:36:30,361 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:36:30,362 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:36:30,362 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:36:30,407 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:36:30,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 70 flow [2024-10-11 14:36:30,480 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-10-11 14:36:30,480 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:36:30,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 5/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-10-11 14:36:30,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 28 transitions, 70 flow [2024-10-11 14:36:30,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 25 transitions, 62 flow [2024-10-11 14:36:30,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:36:30,504 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;@4cdc7e33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:36:30,504 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:36:30,514 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:36:30,514 INFO L124 PetriNetUnfolderBase]: 5/24 cut-off events. [2024-10-11 14:36:30,514 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:36:30,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:30,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:30,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:30,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1826755679, now seen corresponding path program 1 times [2024-10-11 14:36:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547293288] [2024-10-11 14:36:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:30,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547293288] [2024-10-11 14:36:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547293288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:30,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776353677] [2024-10-11 14:36:30,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:30,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:36:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:36:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:36:30,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:30,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:30,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:30,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:30,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:30,897 INFO L124 PetriNetUnfolderBase]: 122/217 cut-off events. [2024-10-11 14:36:30,897 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 14:36:30,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 217 events. 122/217 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 721 event pairs, 94 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 405. Up to 214 conditions per place. [2024-10-11 14:36:30,901 INFO L140 encePairwiseOnDemand]: 26/28 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-10-11 14:36:30,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 98 flow [2024-10-11 14:36:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:36:30,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:36:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2024-10-11 14:36:30,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-11 14:36:30,916 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 62 flow. Second operand 2 states and 32 transitions. [2024-10-11 14:36:30,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 98 flow [2024-10-11 14:36:30,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:30,922 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 50 flow [2024-10-11 14:36:30,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2024-10-11 14:36:30,927 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2024-10-11 14:36:30,928 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 50 flow [2024-10-11 14:36:30,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:30,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:30,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:30,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:36:30,929 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:30,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:30,929 INFO L85 PathProgramCache]: Analyzing trace with hash 5065408, now seen corresponding path program 1 times [2024-10-11 14:36:30,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:30,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784085481] [2024-10-11 14:36:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:30,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:31,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:31,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784085481] [2024-10-11 14:36:31,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784085481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:31,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:31,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:31,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047737772] [2024-10-11 14:36:31,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:31,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:31,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:31,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:31,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:31,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:31,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:31,223 INFO L124 PetriNetUnfolderBase]: 203/353 cut-off events. [2024-10-11 14:36:31,224 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 14:36:31,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 353 events. 203/353 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1268 event pairs, 82 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 709. Up to 176 conditions per place. [2024-10-11 14:36:31,229 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 28 selfloop transitions, 2 changer transitions 3/36 dead transitions. [2024-10-11 14:36:31,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 144 flow [2024-10-11 14:36:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-10-11 14:36:31,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:36:31,232 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 50 flow. Second operand 3 states and 49 transitions. [2024-10-11 14:36:31,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 144 flow [2024-10-11 14:36:31,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:31,236 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 62 flow [2024-10-11 14:36:31,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-10-11 14:36:31,238 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-10-11 14:36:31,238 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 62 flow [2024-10-11 14:36:31,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:31,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:31,239 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:31,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:36:31,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:31,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:31,240 INFO L85 PathProgramCache]: Analyzing trace with hash -576454128, now seen corresponding path program 1 times [2024-10-11 14:36:31,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:31,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547678391] [2024-10-11 14:36:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:31,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:31,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547678391] [2024-10-11 14:36:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547678391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:31,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:31,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:36:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123255314] [2024-10-11 14:36:31,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:31,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:36:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:36:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:36:31,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:31,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:31,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:31,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:31,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:31,478 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-10-11 14:36:31,479 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-11 14:36:31,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 446 events. 251/446 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1647 event pairs, 113 based on Foata normal form. 11/386 useless extension candidates. Maximal degree in co-relation 934. Up to 306 conditions per place. [2024-10-11 14:36:31,484 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 27 selfloop transitions, 2 changer transitions 6/38 dead transitions. [2024-10-11 14:36:31,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 163 flow [2024-10-11 14:36:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:36:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:36:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-11 14:36:31,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-10-11 14:36:31,486 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 62 flow. Second operand 3 states and 50 transitions. [2024-10-11 14:36:31,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 163 flow [2024-10-11 14:36:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:31,488 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 72 flow [2024-10-11 14:36:31,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-10-11 14:36:31,491 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2024-10-11 14:36:31,491 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2024-10-11 14:36:31,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:31,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:31,492 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:31,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:36:31,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:31,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash -685549057, now seen corresponding path program 1 times [2024-10-11 14:36:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:31,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443101467] [2024-10-11 14:36:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443101467] [2024-10-11 14:36:31,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443101467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:31,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:31,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:36:31,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917724088] [2024-10-11 14:36:31,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:31,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:36:31,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:31,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:36:31,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:36:31,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:31,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:31,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:31,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:31,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:31,853 INFO L124 PetriNetUnfolderBase]: 319/585 cut-off events. [2024-10-11 14:36:31,854 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-10-11 14:36:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 585 events. 319/585 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2472 event pairs, 285 based on Foata normal form. 12/502 useless extension candidates. Maximal degree in co-relation 1262. Up to 443 conditions per place. [2024-10-11 14:36:31,859 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 21 selfloop transitions, 2 changer transitions 15/41 dead transitions. [2024-10-11 14:36:31,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 184 flow [2024-10-11 14:36:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:36:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:36:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2024-10-11 14:36:31,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-10-11 14:36:31,862 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 72 flow. Second operand 4 states and 57 transitions. [2024-10-11 14:36:31,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 184 flow [2024-10-11 14:36:31,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:31,864 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 84 flow [2024-10-11 14:36:31,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-10-11 14:36:31,865 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2024-10-11 14:36:31,866 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 84 flow [2024-10-11 14:36:31,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:31,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:31,867 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:31,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:36:31,867 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:31,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1526105098, now seen corresponding path program 1 times [2024-10-11 14:36:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798224254] [2024-10-11 14:36:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:31,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:32,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:32,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798224254] [2024-10-11 14:36:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798224254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398525251] [2024-10-11 14:36:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:32,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:32,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:32,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:36:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:32,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:36:32,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:32,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:32,571 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:32,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-10-11 14:36:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398525251] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:32,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:32,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-10-11 14:36:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064509675] [2024-10-11 14:36:32,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:32,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:36:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:32,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:36:32,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:36:32,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:32,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 84 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:32,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:32,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:32,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:32,840 INFO L124 PetriNetUnfolderBase]: 331/583 cut-off events. [2024-10-11 14:36:32,841 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-10-11 14:36:32,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 583 events. 331/583 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2148 event pairs, 68 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 1281. Up to 157 conditions per place. [2024-10-11 14:36:32,844 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 44 selfloop transitions, 5 changer transitions 12/64 dead transitions. [2024-10-11 14:36:32,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 64 transitions, 295 flow [2024-10-11 14:36:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-10-11 14:36:32,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-11 14:36:32,846 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 84 flow. Second operand 6 states and 91 transitions. [2024-10-11 14:36:32,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 64 transitions, 295 flow [2024-10-11 14:36:32,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 64 transitions, 289 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:32,849 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 98 flow [2024-10-11 14:36:32,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-10-11 14:36:32,850 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2024-10-11 14:36:32,850 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 98 flow [2024-10-11 14:36:32,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:32,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:32,850 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:32,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:36:33,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:33,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:33,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash -921432716, now seen corresponding path program 2 times [2024-10-11 14:36:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:33,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681593946] [2024-10-11 14:36:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:33,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681593946] [2024-10-11 14:36:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681593946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298073519] [2024-10-11 14:36:33,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:36:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:33,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:33,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:36:33,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:36:33,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:33,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:36:33,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:36:33,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:36:33,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298073519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:33,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:33,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2024-10-11 14:36:33,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376559357] [2024-10-11 14:36:33,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:33,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:36:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:36:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:36:33,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:33,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:33,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:33,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:33,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:33,922 INFO L124 PetriNetUnfolderBase]: 948/1687 cut-off events. [2024-10-11 14:36:33,922 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2024-10-11 14:36:33,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 1687 events. 948/1687 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8087 event pairs, 348 based on Foata normal form. 43/1465 useless extension candidates. Maximal degree in co-relation 3761. Up to 462 conditions per place. [2024-10-11 14:36:33,929 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 49 selfloop transitions, 9 changer transitions 42/103 dead transitions. [2024-10-11 14:36:33,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 103 transitions, 512 flow [2024-10-11 14:36:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:36:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:36:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-10-11 14:36:33,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-10-11 14:36:33,931 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 98 flow. Second operand 9 states and 143 transitions. [2024-10-11 14:36:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 103 transitions, 512 flow [2024-10-11 14:36:33,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 103 transitions, 495 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:33,936 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 170 flow [2024-10-11 14:36:33,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-10-11 14:36:33,936 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2024-10-11 14:36:33,936 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 170 flow [2024-10-11 14:36:33,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:33,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:33,937 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:33,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:34,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:34,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:34,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash 312778938, now seen corresponding path program 3 times [2024-10-11 14:36:34,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:34,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330466854] [2024-10-11 14:36:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:34,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330466854] [2024-10-11 14:36:34,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330466854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:34,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157818353] [2024-10-11 14:36:34,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:36:34,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:34,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:34,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:36:34,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 14:36:34,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:34,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 14:36:34,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:35,060 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:35,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-11 14:36:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:35,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:35,146 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:35,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-10-11 14:36:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157818353] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:35,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:35,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-10-11 14:36:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904729958] [2024-10-11 14:36:35,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:35,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 14:36:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 14:36:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-10-11 14:36:35,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:35,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 170 flow. Second operand has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 22 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:35,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:35,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:35,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:36,629 INFO L124 PetriNetUnfolderBase]: 2375/4137 cut-off events. [2024-10-11 14:36:36,630 INFO L125 PetriNetUnfolderBase]: For 2950/2950 co-relation queries the response was YES. [2024-10-11 14:36:36,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10120 conditions, 4137 events. 2375/4137 cut-off events. For 2950/2950 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22913 event pairs, 448 based on Foata normal form. 21/3511 useless extension candidates. Maximal degree in co-relation 10107. Up to 750 conditions per place. [2024-10-11 14:36:36,652 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 138 selfloop transitions, 28 changer transitions 79/248 dead transitions. [2024-10-11 14:36:36,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 248 transitions, 1363 flow [2024-10-11 14:36:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:36:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:36:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 340 transitions. [2024-10-11 14:36:36,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-10-11 14:36:36,654 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 170 flow. Second operand 21 states and 340 transitions. [2024-10-11 14:36:36,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 248 transitions, 1363 flow [2024-10-11 14:36:36,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 248 transitions, 1327 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:36,670 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 445 flow [2024-10-11 14:36:36,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=445, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-10-11 14:36:36,671 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 43 predicate places. [2024-10-11 14:36:36,671 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 445 flow [2024-10-11 14:36:36,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.136363636363637) internal successors, (179), 22 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:36,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:36,671 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:36,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:36,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:36,876 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:36,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1078660162, now seen corresponding path program 4 times [2024-10-11 14:36:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:36,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597725445] [2024-10-11 14:36:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:37,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597725445] [2024-10-11 14:36:37,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597725445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:37,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903928504] [2024-10-11 14:36:37,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:36:37,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:37,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:37,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:36:37,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:36:37,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:37,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 14:36:37,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:37,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:37,748 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:37,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2024-10-11 14:36:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:37,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903928504] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:37,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:37,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 19 [2024-10-11 14:36:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821425038] [2024-10-11 14:36:37,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:37,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 14:36:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 14:36:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:36:37,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:37,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 445 flow. Second operand has 20 states, 20 states have (on average 8.8) internal successors, (176), 20 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:37,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:37,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:37,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:38,833 INFO L124 PetriNetUnfolderBase]: 2477/4299 cut-off events. [2024-10-11 14:36:38,833 INFO L125 PetriNetUnfolderBase]: For 8127/8127 co-relation queries the response was YES. [2024-10-11 14:36:38,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11831 conditions, 4299 events. 2477/4299 cut-off events. For 8127/8127 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23264 event pairs, 428 based on Foata normal form. 3/3632 useless extension candidates. Maximal degree in co-relation 11808. Up to 875 conditions per place. [2024-10-11 14:36:38,859 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 140 selfloop transitions, 32 changer transitions 36/211 dead transitions. [2024-10-11 14:36:38,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 211 transitions, 1455 flow [2024-10-11 14:36:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:36:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:36:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 269 transitions. [2024-10-11 14:36:38,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5651260504201681 [2024-10-11 14:36:38,861 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 445 flow. Second operand 17 states and 269 transitions. [2024-10-11 14:36:38,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 211 transitions, 1455 flow [2024-10-11 14:36:38,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 211 transitions, 1305 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-10-11 14:36:38,891 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 532 flow [2024-10-11 14:36:38,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=532, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-10-11 14:36:38,892 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 53 predicate places. [2024-10-11 14:36:38,892 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 532 flow [2024-10-11 14:36:38,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.8) internal successors, (176), 20 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:38,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:38,893 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:38,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:36:39,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 14:36:39,098 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:39,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:39,098 INFO L85 PathProgramCache]: Analyzing trace with hash 427032896, now seen corresponding path program 5 times [2024-10-11 14:36:39,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:39,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439740635] [2024-10-11 14:36:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:39,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:36:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439740635] [2024-10-11 14:36:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439740635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272968270] [2024-10-11 14:36:39,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:36:39,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:39,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:36:39,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:36:39,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:39,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:36:39,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:36:39,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:36:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272968270] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:39,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-10-11 14:36:39,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352230736] [2024-10-11 14:36:39,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:39,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:36:39,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:39,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:36:39,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:36:39,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:39,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 532 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:39,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:39,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:39,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:40,196 INFO L124 PetriNetUnfolderBase]: 4762/8240 cut-off events. [2024-10-11 14:36:40,196 INFO L125 PetriNetUnfolderBase]: For 14345/14345 co-relation queries the response was YES. [2024-10-11 14:36:40,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22173 conditions, 8240 events. 4762/8240 cut-off events. For 14345/14345 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 51105 event pairs, 1467 based on Foata normal form. 55/7013 useless extension candidates. Maximal degree in co-relation 22150. Up to 3046 conditions per place. [2024-10-11 14:36:40,244 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 88 selfloop transitions, 45 changer transitions 0/136 dead transitions. [2024-10-11 14:36:40,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 136 transitions, 1302 flow [2024-10-11 14:36:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-11 14:36:40,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-10-11 14:36:40,246 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 532 flow. Second operand 5 states and 93 transitions. [2024-10-11 14:36:40,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 136 transitions, 1302 flow [2024-10-11 14:36:40,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 136 transitions, 1085 flow, removed 64 selfloop flow, removed 15 redundant places. [2024-10-11 14:36:40,264 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 910 flow [2024-10-11 14:36:40,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=910, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2024-10-11 14:36:40,265 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 45 predicate places. [2024-10-11 14:36:40,265 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 910 flow [2024-10-11 14:36:40,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:40,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:40,266 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:40,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:40,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:40,467 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:40,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:40,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1120363923, now seen corresponding path program 6 times [2024-10-11 14:36:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:40,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880470109] [2024-10-11 14:36:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:40,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:36:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:40,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880470109] [2024-10-11 14:36:40,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880470109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584936464] [2024-10-11 14:36:40,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:36:40,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:40,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:40,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:36:40,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 14:36:40,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:40,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 14:36:40,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:36:41,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:36:41,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584936464] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:41,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:41,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-10-11 14:36:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046473885] [2024-10-11 14:36:41,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:41,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 14:36:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 14:36:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:36:41,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:41,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 910 flow. Second operand has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:41,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:41,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:41,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:42,061 INFO L124 PetriNetUnfolderBase]: 2982/5214 cut-off events. [2024-10-11 14:36:42,061 INFO L125 PetriNetUnfolderBase]: For 10328/10328 co-relation queries the response was YES. [2024-10-11 14:36:42,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14409 conditions, 5214 events. 2982/5214 cut-off events. For 10328/10328 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 30396 event pairs, 2389 based on Foata normal form. 32/4431 useless extension candidates. Maximal degree in co-relation 14387. Up to 4518 conditions per place. [2024-10-11 14:36:42,089 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 54 selfloop transitions, 4 changer transitions 67/128 dead transitions. [2024-10-11 14:36:42,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 128 transitions, 989 flow [2024-10-11 14:36:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:36:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:36:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-10-11 14:36:42,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107142857142857 [2024-10-11 14:36:42,091 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 910 flow. Second operand 10 states and 143 transitions. [2024-10-11 14:36:42,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 128 transitions, 989 flow [2024-10-11 14:36:42,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 128 transitions, 907 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-11 14:36:42,115 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 484 flow [2024-10-11 14:36:42,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=484, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-10-11 14:36:42,116 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 48 predicate places. [2024-10-11 14:36:42,116 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 484 flow [2024-10-11 14:36:42,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.4) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:42,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:42,116 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:42,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:42,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 14:36:42,317 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:42,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:42,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1883401274, now seen corresponding path program 7 times [2024-10-11 14:36:42,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:42,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17457266] [2024-10-11 14:36:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:42,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:42,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:42,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17457266] [2024-10-11 14:36:42,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17457266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:42,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453829819] [2024-10-11 14:36:42,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:36:42,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:42,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:42,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:42,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:36:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:42,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:36:42,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:36:43,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:43,191 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:43,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2024-10-11 14:36:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:36:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453829819] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:43,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:43,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2024-10-11 14:36:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154406714] [2024-10-11 14:36:43,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:43,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 14:36:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 14:36:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:36:43,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:43,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 484 flow. Second operand has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:43,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:43,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:43,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:44,533 INFO L124 PetriNetUnfolderBase]: 4136/7098 cut-off events. [2024-10-11 14:36:44,534 INFO L125 PetriNetUnfolderBase]: For 7306/7306 co-relation queries the response was YES. [2024-10-11 14:36:44,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18324 conditions, 7098 events. 4136/7098 cut-off events. For 7306/7306 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 41842 event pairs, 320 based on Foata normal form. 20/6015 useless extension candidates. Maximal degree in co-relation 18304. Up to 1300 conditions per place. [2024-10-11 14:36:44,565 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 154 selfloop transitions, 62 changer transitions 78/297 dead transitions. [2024-10-11 14:36:44,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 297 transitions, 1817 flow [2024-10-11 14:36:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:36:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:36:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 393 transitions. [2024-10-11 14:36:44,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5848214285714286 [2024-10-11 14:36:44,568 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 484 flow. Second operand 24 states and 393 transitions. [2024-10-11 14:36:44,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 297 transitions, 1817 flow [2024-10-11 14:36:44,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 297 transitions, 1696 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-10-11 14:36:44,590 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 851 flow [2024-10-11 14:36:44,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=851, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2024-10-11 14:36:44,591 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 65 predicate places. [2024-10-11 14:36:44,591 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 851 flow [2024-10-11 14:36:44,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:44,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:44,592 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:44,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:44,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:44,796 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:44,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -384876044, now seen corresponding path program 8 times [2024-10-11 14:36:44,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:44,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56918084] [2024-10-11 14:36:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:44,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 14:36:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56918084] [2024-10-11 14:36:44,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56918084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874359613] [2024-10-11 14:36:44,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:36:44,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:44,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:45,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:45,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:36:45,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:36:45,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:45,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 14:36:45,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 14:36:45,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 14:36:45,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874359613] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:45,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:45,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-10-11 14:36:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295739484] [2024-10-11 14:36:45,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:45,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 14:36:45,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 14:36:45,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2024-10-11 14:36:45,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:45,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 851 flow. Second operand has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:45,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:45,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:45,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,061 INFO L124 PetriNetUnfolderBase]: 8178/14209 cut-off events. [2024-10-11 14:36:47,062 INFO L125 PetriNetUnfolderBase]: For 19326/19326 co-relation queries the response was YES. [2024-10-11 14:36:47,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36539 conditions, 14209 events. 8178/14209 cut-off events. For 19326/19326 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 100798 event pairs, 5133 based on Foata normal form. 242/12206 useless extension candidates. Maximal degree in co-relation 36510. Up to 7092 conditions per place. [2024-10-11 14:36:47,125 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 76 selfloop transitions, 5 changer transitions 99/183 dead transitions. [2024-10-11 14:36:47,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 183 transitions, 1906 flow [2024-10-11 14:36:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:36:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:36:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-10-11 14:36:47,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-10-11 14:36:47,128 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 851 flow. Second operand 10 states and 130 transitions. [2024-10-11 14:36:47,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 183 transitions, 1906 flow [2024-10-11 14:36:47,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 183 transitions, 1642 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-10-11 14:36:47,212 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 818 flow [2024-10-11 14:36:47,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=818, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-10-11 14:36:47,213 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 68 predicate places. [2024-10-11 14:36:47,213 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 818 flow [2024-10-11 14:36:47,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.307692307692308) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:47,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:47,214 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:47,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:36:47,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:36:47,415 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:47,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash -774948251, now seen corresponding path program 9 times [2024-10-11 14:36:47,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:47,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482029302] [2024-10-11 14:36:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 14:36:47,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482029302] [2024-10-11 14:36:47,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482029302] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:47,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478499090] [2024-10-11 14:36:47,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:36:47,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:47,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:47,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:47,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:36:47,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 14:36:47,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:47,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:36:47,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 14:36:47,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 14:36:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478499090] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:47,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:47,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2024-10-11 14:36:47,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206745235] [2024-10-11 14:36:47,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:47,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:36:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:36:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:36:47,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:47,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 818 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-10-11 14:36:47,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:47,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:47,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:49,079 INFO L124 PetriNetUnfolderBase]: 7724/13225 cut-off events. [2024-10-11 14:36:49,080 INFO L125 PetriNetUnfolderBase]: For 16461/16461 co-relation queries the response was YES. [2024-10-11 14:36:49,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34236 conditions, 13225 events. 7724/13225 cut-off events. For 16461/16461 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 87515 event pairs, 1656 based on Foata normal form. 22/11197 useless extension candidates. Maximal degree in co-relation 34202. Up to 3528 conditions per place. [2024-10-11 14:36:49,131 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 102 selfloop transitions, 82 changer transitions 0/187 dead transitions. [2024-10-11 14:36:49,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 187 transitions, 2001 flow [2024-10-11 14:36:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:36:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:36:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-10-11 14:36:49,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-11 14:36:49,132 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 818 flow. Second operand 6 states and 114 transitions. [2024-10-11 14:36:49,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 187 transitions, 2001 flow [2024-10-11 14:36:49,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 187 transitions, 1815 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-10-11 14:36:49,234 INFO L231 Difference]: Finished difference. Result has 89 places, 131 transitions, 1438 flow [2024-10-11 14:36:49,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1438, PETRI_PLACES=89, PETRI_TRANSITIONS=131} [2024-10-11 14:36:49,235 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 62 predicate places. [2024-10-11 14:36:49,235 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 131 transitions, 1438 flow [2024-10-11 14:36:49,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-10-11 14:36:49,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:49,236 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:49,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:49,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:49,441 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:49,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1980071336, now seen corresponding path program 10 times [2024-10-11 14:36:49,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:49,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664984184] [2024-10-11 14:36:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664984184] [2024-10-11 14:36:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664984184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715852500] [2024-10-11 14:36:50,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:36:50,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:50,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:50,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:36:50,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:36:50,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:50,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 14:36:50,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:50,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:50,768 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:50,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-10-11 14:36:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:36:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715852500] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:50,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:50,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 10] total 35 [2024-10-11 14:36:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104067787] [2024-10-11 14:36:50,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:50,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 14:36:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 14:36:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 14:36:50,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:50,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 131 transitions, 1438 flow. Second operand has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:50,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:50,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:50,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:54,397 INFO L124 PetriNetUnfolderBase]: 13018/22293 cut-off events. [2024-10-11 14:36:54,398 INFO L125 PetriNetUnfolderBase]: For 33013/33013 co-relation queries the response was YES. [2024-10-11 14:36:54,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59730 conditions, 22293 events. 13018/22293 cut-off events. For 33013/33013 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 157567 event pairs, 893 based on Foata normal form. 16/18852 useless extension candidates. Maximal degree in co-relation 59699. Up to 4100 conditions per place. [2024-10-11 14:36:54,622 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 405 selfloop transitions, 196 changer transitions 117/721 dead transitions. [2024-10-11 14:36:54,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 721 transitions, 5512 flow [2024-10-11 14:36:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-11 14:36:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-10-11 14:36:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 848 transitions. [2024-10-11 14:36:54,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6180758017492711 [2024-10-11 14:36:54,627 INFO L175 Difference]: Start difference. First operand has 89 places, 131 transitions, 1438 flow. Second operand 49 states and 848 transitions. [2024-10-11 14:36:54,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 721 transitions, 5512 flow [2024-10-11 14:36:54,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 721 transitions, 5372 flow, removed 70 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:54,768 INFO L231 Difference]: Finished difference. Result has 154 places, 230 transitions, 2952 flow [2024-10-11 14:36:54,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2952, PETRI_PLACES=154, PETRI_TRANSITIONS=230} [2024-10-11 14:36:54,770 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2024-10-11 14:36:54,771 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 230 transitions, 2952 flow [2024-10-11 14:36:54,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:54,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:54,772 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:54,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 14:36:54,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 14:36:54,973 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:36:54,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2127821118, now seen corresponding path program 11 times [2024-10-11 14:36:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:54,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643340048] [2024-10-11 14:36:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:54,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:55,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643340048] [2024-10-11 14:36:55,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643340048] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:55,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529282048] [2024-10-11 14:36:55,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:36:55,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:55,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:55,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:55,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:36:55,757 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 14:36:55,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:55,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 14:36:55,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:55,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 14:36:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:56,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:56,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2024-10-11 14:36:56,584 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:36:56,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2024-10-11 14:36:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:36:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529282048] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:56,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:56,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 38 [2024-10-11 14:36:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181414776] [2024-10-11 14:36:56,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:56,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 14:36:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 14:36:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 14:36:56,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:36:56,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 230 transitions, 2952 flow. Second operand has 39 states, 39 states have (on average 8.0) internal successors, (312), 39 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:56,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:56,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:36:56,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:01,382 INFO L124 PetriNetUnfolderBase]: 14927/25548 cut-off events. [2024-10-11 14:37:01,382 INFO L125 PetriNetUnfolderBase]: For 54721/54721 co-relation queries the response was YES. [2024-10-11 14:37:01,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71207 conditions, 25548 events. 14927/25548 cut-off events. For 54721/54721 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 191721 event pairs, 5624 based on Foata normal form. 1/21588 useless extension candidates. Maximal degree in co-relation 71158. Up to 17851 conditions per place. [2024-10-11 14:37:01,689 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 428 selfloop transitions, 73 changer transitions 123/627 dead transitions. [2024-10-11 14:37:01,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 627 transitions, 5609 flow [2024-10-11 14:37:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 14:37:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 14:37:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 607 transitions. [2024-10-11 14:37:01,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859073359073359 [2024-10-11 14:37:01,693 INFO L175 Difference]: Start difference. First operand has 154 places, 230 transitions, 2952 flow. Second operand 37 states and 607 transitions. [2024-10-11 14:37:01,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 627 transitions, 5609 flow [2024-10-11 14:37:02,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 627 transitions, 5028 flow, removed 95 selfloop flow, removed 12 redundant places. [2024-10-11 14:37:02,173 INFO L231 Difference]: Finished difference. Result has 184 places, 257 transitions, 2969 flow [2024-10-11 14:37:02,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2969, PETRI_PLACES=184, PETRI_TRANSITIONS=257} [2024-10-11 14:37:02,174 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 157 predicate places. [2024-10-11 14:37:02,174 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 257 transitions, 2969 flow [2024-10-11 14:37:02,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.0) internal successors, (312), 39 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:02,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:02,175 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:02,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:02,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 14:37:02,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:02,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:02,376 INFO L85 PathProgramCache]: Analyzing trace with hash 665143316, now seen corresponding path program 12 times [2024-10-11 14:37:02,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:02,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236067625] [2024-10-11 14:37:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:02,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236067625] [2024-10-11 14:37:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236067625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506544898] [2024-10-11 14:37:02,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:02,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:02,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:02,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:37:02,994 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-10-11 14:37:02,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:02,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 14:37:02,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:03,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-11 14:37:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 14:37:03,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:04,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2024-10-11 14:37:04,187 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-11 14:37:04,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2024-10-11 14:37:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 14:37:04,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506544898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:04,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:04,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2024-10-11 14:37:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21766390] [2024-10-11 14:37:04,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:04,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-11 14:37:04,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-11 14:37:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-10-11 14:37:04,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:37:04,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 257 transitions, 2969 flow. Second operand has 36 states, 36 states have (on average 7.861111111111111) internal successors, (283), 36 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:04,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:04,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:37:04,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:28,650 INFO L124 PetriNetUnfolderBase]: 84812/144912 cut-off events. [2024-10-11 14:37:28,650 INFO L125 PetriNetUnfolderBase]: For 257751/257751 co-relation queries the response was YES. [2024-10-11 14:37:30,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385163 conditions, 144912 events. 84812/144912 cut-off events. For 257751/257751 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 1330770 event pairs, 26031 based on Foata normal form. 88/122507 useless extension candidates. Maximal degree in co-relation 385107. Up to 26750 conditions per place. [2024-10-11 14:37:30,570 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 1110 selfloop transitions, 831 changer transitions 237/2181 dead transitions. [2024-10-11 14:37:30,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 2181 transitions, 22544 flow [2024-10-11 14:37:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-11 14:37:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-10-11 14:37:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 1224 transitions. [2024-10-11 14:37:30,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6156941649899397 [2024-10-11 14:37:30,573 INFO L175 Difference]: Start difference. First operand has 184 places, 257 transitions, 2969 flow. Second operand 71 states and 1224 transitions. [2024-10-11 14:37:30,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 2181 transitions, 22544 flow [2024-10-11 14:37:34,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 2181 transitions, 22304 flow, removed 53 selfloop flow, removed 17 redundant places. [2024-10-11 14:37:34,751 INFO L231 Difference]: Finished difference. Result has 264 places, 1120 transitions, 16836 flow [2024-10-11 14:37:34,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=16836, PETRI_PLACES=264, PETRI_TRANSITIONS=1120} [2024-10-11 14:37:34,752 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 237 predicate places. [2024-10-11 14:37:34,752 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 1120 transitions, 16836 flow [2024-10-11 14:37:34,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.861111111111111) internal successors, (283), 36 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:34,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:34,753 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:34,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:34,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 14:37:34,953 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:34,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 343215040, now seen corresponding path program 13 times [2024-10-11 14:37:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147599691] [2024-10-11 14:37:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 14:37:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147599691] [2024-10-11 14:37:35,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147599691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:35,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013425460] [2024-10-11 14:37:35,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:37:35,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:35,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:35,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:35,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:37:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:35,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:37:35,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 14:37:35,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 32 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 14:37:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013425460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:35,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:35,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2024-10-11 14:37:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547465658] [2024-10-11 14:37:35,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:35,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 14:37:35,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 14:37:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:37:35,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-10-11 14:37:35,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 1120 transitions, 16836 flow. Second operand has 17 states, 17 states have (on average 9.235294117647058) internal successors, (157), 17 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:35,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:35,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-10-11 14:37:35,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand