./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/parallel-misc-3.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/parallel-misc-3.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 206fc494d359c55f00dca0f227d0ffa61103c97cbe34d3166496eff2224a478a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:29:29,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:29:29,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:29:29,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:29:29,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:29:29,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:29:29,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:29:29,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:29:29,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:29:29,960 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:29:29,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:29:29,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:29:29,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:29:29,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:29:29,962 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:29:29,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:29:29,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:29:29,963 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:29:29,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:29:29,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:29:29,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:29:29,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:29:29,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:29:29,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:29:29,967 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:29:29,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:29:29,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:29:29,968 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:29:29,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:29:29,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:29:29,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:29:29,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:29:29,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:29:29,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:29:29,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:29:29,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:29:29,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:29:29,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:29:29,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:29:29,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:29:29,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:29:29,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:29:29,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 206fc494d359c55f00dca0f227d0ffa61103c97cbe34d3166496eff2224a478a [2024-10-11 14:29:30,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:29:30,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:29:30,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:29:30,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:29:30,188 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:29:30,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-10-11 14:29:31,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:29:31,734 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:29:31,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-10-11 14:29:31,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/56ba039c2/0a0f375419184b1aadb6c723b2d8db79/FLAG41c101f2d [2024-10-11 14:29:31,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/56ba039c2/0a0f375419184b1aadb6c723b2d8db79 [2024-10-11 14:29:31,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:29:31,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:29:31,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:29:31,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:29:31,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:29:31,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:31" (1/1) ... [2024-10-11 14:29:31,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc7fb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:31, skipping insertion in model container [2024-10-11 14:29:31,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:31" (1/1) ... [2024-10-11 14:29:31,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:29:31,960 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/parallel-misc-3.wvr.c[2436,2449] [2024-10-11 14:29:31,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:29:31,972 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:29:31,989 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/parallel-misc-3.wvr.c[2436,2449] [2024-10-11 14:29:31,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:29:32,008 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:29:32,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32 WrapperNode [2024-10-11 14:29:32,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:29:32,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:29:32,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:29:32,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:29:32,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,040 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2024-10-11 14:29:32,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:29:32,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:29:32,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:29:32,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:29:32,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,078 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:29:32,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:29:32,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:29:32,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:29:32,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:29:32,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (1/1) ... [2024-10-11 14:29:32,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:29:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:32,132 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 14:29:32,151 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 14:29:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:29:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:29:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:29:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:29:32,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:29:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:29:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:29:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:29:32,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:29:32,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:29:32,219 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 14:29:32,298 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:29:32,301 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:29:32,425 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:29:32,425 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:29:32,510 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:29:32,510 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 14:29:32,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:32 BoogieIcfgContainer [2024-10-11 14:29:32,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:29:32,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:29:32,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:29:32,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:29:32,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:31" (1/3) ... [2024-10-11 14:29:32,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d99135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:32, skipping insertion in model container [2024-10-11 14:29:32,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:32" (2/3) ... [2024-10-11 14:29:32,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d99135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:32, skipping insertion in model container [2024-10-11 14:29:32,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:32" (3/3) ... [2024-10-11 14:29:32,519 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-10-11 14:29:32,531 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:29:32,531 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:29:32,531 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:29:32,587 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:29:32,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 70 flow [2024-10-11 14:29:32,632 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-10-11 14:29:32,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:29:32,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-11 14:29:32,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 70 flow [2024-10-11 14:29:32,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 62 flow [2024-10-11 14:29:32,644 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:29:32,649 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;@1a3d717a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:29:32,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:29:32,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:29:32,661 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-11 14:29:32,661 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:29:32,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:32,662 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:32,662 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 14:29:32,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1813201285, now seen corresponding path program 1 times [2024-10-11 14:29:32,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:32,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777688951] [2024-10-11 14:29:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:32,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:32,870 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 14:29:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777688951] [2024-10-11 14:29:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777688951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631808786] [2024-10-11 14:29:32,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:32,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:32,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:32,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-11 14:29:32,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 14:29:32,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:32,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-11 14:29:32,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:33,024 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2024-10-11 14:29:33,025 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 14:29:33,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 252 events. 130/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 939 event pairs, 12 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 404. Up to 165 conditions per place. [2024-10-11 14:29:33,028 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 21 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2024-10-11 14:29:33,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 147 flow [2024-10-11 14:29:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-11 14:29:33,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-11 14:29:33,038 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 62 flow. Second operand 3 states and 61 transitions. [2024-10-11 14:29:33,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 147 flow [2024-10-11 14:29:33,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:29:33,043 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 87 flow [2024-10-11 14:29:33,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-10-11 14:29:33,046 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-10-11 14:29:33,046 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 87 flow [2024-10-11 14:29:33,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 14:29:33,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:33,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:33,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:29:33,047 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 14:29:33,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash -426149495, now seen corresponding path program 1 times [2024-10-11 14:29:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980996530] [2024-10-11 14:29:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:33,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980996530] [2024-10-11 14:29:33,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980996530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:33,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:33,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:33,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943045878] [2024-10-11 14:29:33,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:33,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:33,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:33,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-10-11 14:29:33,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 14:29:33,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:33,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-10-11 14:29:33,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:33,288 INFO L124 PetriNetUnfolderBase]: 125/256 cut-off events. [2024-10-11 14:29:33,289 INFO L125 PetriNetUnfolderBase]: For 28/60 co-relation queries the response was YES. [2024-10-11 14:29:33,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 256 events. 125/256 cut-off events. For 28/60 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1065 event pairs, 29 based on Foata normal form. 11/243 useless extension candidates. Maximal degree in co-relation 318. Up to 119 conditions per place. [2024-10-11 14:29:33,291 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 25 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-10-11 14:29:33,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 39 transitions, 165 flow [2024-10-11 14:29:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-10-11 14:29:33,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-11 14:29:33,293 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 87 flow. Second operand 3 states and 63 transitions. [2024-10-11 14:29:33,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 39 transitions, 165 flow [2024-10-11 14:29:33,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:33,295 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2024-10-11 14:29:33,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2024-10-11 14:29:33,296 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-10-11 14:29:33,296 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2024-10-11 14:29:33,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 14:29:33,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:33,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:33,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:29:33,296 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 14:29:33,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -615292971, now seen corresponding path program 1 times [2024-10-11 14:29:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671431367] [2024-10-11 14:29:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:33,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:33,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671431367] [2024-10-11 14:29:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671431367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:33,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068365081] [2024-10-11 14:29:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:33,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:33,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2024-10-11 14:29:33,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 14:29:33,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:33,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2024-10-11 14:29:33,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:33,455 INFO L124 PetriNetUnfolderBase]: 117/273 cut-off events. [2024-10-11 14:29:33,455 INFO L125 PetriNetUnfolderBase]: For 53/77 co-relation queries the response was YES. [2024-10-11 14:29:33,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 273 events. 117/273 cut-off events. For 53/77 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1214 event pairs, 17 based on Foata normal form. 14/256 useless extension candidates. Maximal degree in co-relation 220. Up to 101 conditions per place. [2024-10-11 14:29:33,458 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 22 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-11 14:29:33,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 164 flow [2024-10-11 14:29:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-11 14:29:33,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-11 14:29:33,460 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 61 transitions. [2024-10-11 14:29:33,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 164 flow [2024-10-11 14:29:33,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 159 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:33,461 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 98 flow [2024-10-11 14:29:33,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2024-10-11 14:29:33,462 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-10-11 14:29:33,462 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 98 flow [2024-10-11 14:29:33,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 14:29:33,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:33,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:33,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:29:33,463 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 14:29:33,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 922882975, now seen corresponding path program 1 times [2024-10-11 14:29:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688680860] [2024-10-11 14:29:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:33,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688680860] [2024-10-11 14:29:33,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688680860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:33,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:33,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:33,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529967039] [2024-10-11 14:29:33,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:33,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:33,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:33,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 28 [2024-10-11 14:29:33,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:29:33,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:33,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 28 [2024-10-11 14:29:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:33,587 INFO L124 PetriNetUnfolderBase]: 97/207 cut-off events. [2024-10-11 14:29:33,588 INFO L125 PetriNetUnfolderBase]: For 86/116 co-relation queries the response was YES. [2024-10-11 14:29:33,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 207 events. 97/207 cut-off events. For 86/116 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 779 event pairs, 11 based on Foata normal form. 12/197 useless extension candidates. Maximal degree in co-relation 186. Up to 106 conditions per place. [2024-10-11 14:29:33,590 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 22 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-11 14:29:33,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 170 flow [2024-10-11 14:29:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-11 14:29:33,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-10-11 14:29:33,592 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 98 flow. Second operand 3 states and 61 transitions. [2024-10-11 14:29:33,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 170 flow [2024-10-11 14:29:33,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:33,594 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 104 flow [2024-10-11 14:29:33,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-10-11 14:29:33,596 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-10-11 14:29:33,596 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 104 flow [2024-10-11 14:29:33,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:29:33,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:33,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:33,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:29:33,597 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 14:29:33,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash 445722295, now seen corresponding path program 1 times [2024-10-11 14:29:33,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:33,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160337611] [2024-10-11 14:29:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:33,757 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 14:29:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:33,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160337611] [2024-10-11 14:29:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160337611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:29:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120118372] [2024-10-11 14:29:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:33,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:29:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:29:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:29:33,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 28 [2024-10-11 14:29:33,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:29:33,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:33,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 28 [2024-10-11 14:29:33,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:33,843 INFO L124 PetriNetUnfolderBase]: 113/236 cut-off events. [2024-10-11 14:29:33,843 INFO L125 PetriNetUnfolderBase]: For 114/134 co-relation queries the response was YES. [2024-10-11 14:29:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 236 events. 113/236 cut-off events. For 114/134 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 924 event pairs, 14 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 191. Up to 111 conditions per place. [2024-10-11 14:29:33,846 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 23 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-11 14:29:33,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 178 flow [2024-10-11 14:29:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:29:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:29:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-11 14:29:33,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-11 14:29:33,847 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 104 flow. Second operand 3 states and 59 transitions. [2024-10-11 14:29:33,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 178 flow [2024-10-11 14:29:33,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:29:33,849 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 104 flow [2024-10-11 14:29:33,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-11 14:29:33,849 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-10-11 14:29:33,850 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 104 flow [2024-10-11 14:29:33,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 14:29:33,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:33,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:33,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:29:33,851 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 14:29:33,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1246250265, now seen corresponding path program 1 times [2024-10-11 14:29:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682875396] [2024-10-11 14:29:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:34,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:34,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682875396] [2024-10-11 14:29:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682875396] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:34,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147122663] [2024-10-11 14:29:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:34,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:34,053 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 14:29:34,055 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 14:29:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:34,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:29:34,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:34,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:34,458 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 14:29:34,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147122663] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:34,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:29:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 3] total 9 [2024-10-11 14:29:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522647388] [2024-10-11 14:29:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:34,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:29:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:29:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:29:34,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2024-10-11 14:29:34,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:34,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:34,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2024-10-11 14:29:34,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:34,532 INFO L124 PetriNetUnfolderBase]: 204/367 cut-off events. [2024-10-11 14:29:34,532 INFO L125 PetriNetUnfolderBase]: For 185/193 co-relation queries the response was YES. [2024-10-11 14:29:34,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 367 events. 204/367 cut-off events. For 185/193 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1477 event pairs, 56 based on Foata normal form. 11/368 useless extension candidates. Maximal degree in co-relation 323. Up to 141 conditions per place. [2024-10-11 14:29:34,535 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 32 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-10-11 14:29:34,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 242 flow [2024-10-11 14:29:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:29:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:29:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-10-11 14:29:34,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-10-11 14:29:34,537 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 104 flow. Second operand 4 states and 74 transitions. [2024-10-11 14:29:34,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 242 flow [2024-10-11 14:29:34,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:29:34,538 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 134 flow [2024-10-11 14:29:34,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-10-11 14:29:34,539 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-10-11 14:29:34,539 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 134 flow [2024-10-11 14:29:34,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:29:34,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:34,540 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 14:29:34,553 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 14:29:34,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:34,745 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 14:29:34,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1404986465, now seen corresponding path program 1 times [2024-10-11 14:29:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463414822] [2024-10-11 14:29:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:34,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:34,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463414822] [2024-10-11 14:29:34,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463414822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:34,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121924858] [2024-10-11 14:29:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:34,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:34,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:34,898 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 14:29:34,899 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 14:29:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:34,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 14:29:34,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:35,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121924858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:35,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:35,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7] total 13 [2024-10-11 14:29:35,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939061968] [2024-10-11 14:29:35,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:35,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:29:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:29:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:29:35,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-10-11 14:29:35,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 134 flow. Second operand has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 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 14:29:35,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:35,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-10-11 14:29:35,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:36,029 INFO L124 PetriNetUnfolderBase]: 1154/1969 cut-off events. [2024-10-11 14:29:36,030 INFO L125 PetriNetUnfolderBase]: For 1874/1874 co-relation queries the response was YES. [2024-10-11 14:29:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5740 conditions, 1969 events. 1154/1969 cut-off events. For 1874/1874 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9476 event pairs, 69 based on Foata normal form. 106/2058 useless extension candidates. Maximal degree in co-relation 2294. Up to 395 conditions per place. [2024-10-11 14:29:36,042 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 162 selfloop transitions, 92 changer transitions 0/260 dead transitions. [2024-10-11 14:29:36,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 260 transitions, 1504 flow [2024-10-11 14:29:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:29:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:29:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 464 transitions. [2024-10-11 14:29:36,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2024-10-11 14:29:36,046 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 134 flow. Second operand 28 states and 464 transitions. [2024-10-11 14:29:36,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 260 transitions, 1504 flow [2024-10-11 14:29:36,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 260 transitions, 1482 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-10-11 14:29:36,053 INFO L231 Difference]: Finished difference. Result has 88 places, 123 transitions, 977 flow [2024-10-11 14:29:36,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=977, PETRI_PLACES=88, PETRI_TRANSITIONS=123} [2024-10-11 14:29:36,054 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-10-11 14:29:36,054 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 123 transitions, 977 flow [2024-10-11 14:29:36,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 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 14:29:36,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:36,055 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 14:29:36,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:29:36,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:36,259 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 14:29:36,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1139577519, now seen corresponding path program 1 times [2024-10-11 14:29:36,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:36,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470234331] [2024-10-11 14:29:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:36,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:36,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470234331] [2024-10-11 14:29:36,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470234331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:36,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284235647] [2024-10-11 14:29:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:36,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:36,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:36,364 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 14:29:36,365 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 14:29:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:36,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 14:29:36,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:36,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284235647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:36,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-10-11 14:29:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994421844] [2024-10-11 14:29:36,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:36,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:29:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:29:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:29:36,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-11 14:29:36,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 123 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 14:29:36,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:36,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-11 14:29:36,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:37,114 INFO L124 PetriNetUnfolderBase]: 2024/3832 cut-off events. [2024-10-11 14:29:37,114 INFO L125 PetriNetUnfolderBase]: For 32379/32620 co-relation queries the response was YES. [2024-10-11 14:29:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 3832 events. 2024/3832 cut-off events. For 32379/32620 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 24291 event pairs, 218 based on Foata normal form. 46/3789 useless extension candidates. Maximal degree in co-relation 14030. Up to 1235 conditions per place. [2024-10-11 14:29:37,214 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 194 selfloop transitions, 15 changer transitions 1/266 dead transitions. [2024-10-11 14:29:37,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 266 transitions, 2636 flow [2024-10-11 14:29:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:29:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:29:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-11 14:29:37,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8071428571428572 [2024-10-11 14:29:37,219 INFO L175 Difference]: Start difference. First operand has 88 places, 123 transitions, 977 flow. Second operand 5 states and 113 transitions. [2024-10-11 14:29:37,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 266 transitions, 2636 flow [2024-10-11 14:29:37,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 266 transitions, 2398 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-10-11 14:29:37,322 INFO L231 Difference]: Finished difference. Result has 90 places, 135 transitions, 964 flow [2024-10-11 14:29:37,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=964, PETRI_PLACES=90, PETRI_TRANSITIONS=135} [2024-10-11 14:29:37,323 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-10-11 14:29:37,323 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 135 transitions, 964 flow [2024-10-11 14:29:37,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 14:29:37,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:37,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 14:29:37,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:29:37,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:37,525 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 14:29:37,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 547204169, now seen corresponding path program 2 times [2024-10-11 14:29:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:37,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932182349] [2024-10-11 14:29:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:37,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:37,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932182349] [2024-10-11 14:29:37,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932182349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:37,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935438329] [2024-10-11 14:29:37,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:37,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:37,637 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 14:29:37,638 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 14:29:37,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:37,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:37,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 14:29:37,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:37,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:29:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935438329] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:37,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-11 14:29:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288019280] [2024-10-11 14:29:37,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:37,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:29:37,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:37,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:29:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:29:37,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-11 14:29:37,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 135 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 14:29:37,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:37,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-11 14:29:37,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:38,721 INFO L124 PetriNetUnfolderBase]: 3725/7040 cut-off events. [2024-10-11 14:29:38,721 INFO L125 PetriNetUnfolderBase]: For 62154/62744 co-relation queries the response was YES. [2024-10-11 14:29:38,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32415 conditions, 7040 events. 3725/7040 cut-off events. For 62154/62744 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 50747 event pairs, 291 based on Foata normal form. 161/7068 useless extension candidates. Maximal degree in co-relation 25579. Up to 1611 conditions per place. [2024-10-11 14:29:38,786 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 252 selfloop transitions, 31 changer transitions 1/340 dead transitions. [2024-10-11 14:29:38,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 340 transitions, 3164 flow [2024-10-11 14:29:38,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:29:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:29:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-10-11 14:29:38,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2024-10-11 14:29:38,788 INFO L175 Difference]: Start difference. First operand has 90 places, 135 transitions, 964 flow. Second operand 6 states and 138 transitions. [2024-10-11 14:29:38,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 340 transitions, 3164 flow [2024-10-11 14:29:38,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 340 transitions, 3108 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-10-11 14:29:38,928 INFO L231 Difference]: Finished difference. Result has 96 places, 151 transitions, 1091 flow [2024-10-11 14:29:38,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1091, PETRI_PLACES=96, PETRI_TRANSITIONS=151} [2024-10-11 14:29:38,929 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-10-11 14:29:38,929 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 151 transitions, 1091 flow [2024-10-11 14:29:38,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 14:29:38,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:38,930 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 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 14:29:38,947 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 14:29:39,130 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,SelfDestructingSolverStorable8 [2024-10-11 14:29:39,130 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 14:29:39,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -823991305, now seen corresponding path program 3 times [2024-10-11 14:29:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663346052] [2024-10-11 14:29:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:29:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663346052] [2024-10-11 14:29:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663346052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:29:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067728173] [2024-10-11 14:29:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:39,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:29:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:29:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:29:39,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-11 14:29:39,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 151 transitions, 1091 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 14:29:39,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:39,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-11 14:29:39,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:39,792 INFO L124 PetriNetUnfolderBase]: 1832/3752 cut-off events. [2024-10-11 14:29:39,792 INFO L125 PetriNetUnfolderBase]: For 31952/32227 co-relation queries the response was YES. [2024-10-11 14:29:39,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16942 conditions, 3752 events. 1832/3752 cut-off events. For 31952/32227 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 26608 event pairs, 327 based on Foata normal form. 343/3996 useless extension candidates. Maximal degree in co-relation 13376. Up to 1134 conditions per place. [2024-10-11 14:29:39,822 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 90 selfloop transitions, 36 changer transitions 0/179 dead transitions. [2024-10-11 14:29:39,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 179 transitions, 1582 flow [2024-10-11 14:29:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:29:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:29:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-10-11 14:29:39,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-10-11 14:29:39,824 INFO L175 Difference]: Start difference. First operand has 96 places, 151 transitions, 1091 flow. Second operand 4 states and 72 transitions. [2024-10-11 14:29:39,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 179 transitions, 1582 flow [2024-10-11 14:29:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1556 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-11 14:29:39,923 INFO L231 Difference]: Finished difference. Result has 100 places, 152 transitions, 1265 flow [2024-10-11 14:29:39,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1265, PETRI_PLACES=100, PETRI_TRANSITIONS=152} [2024-10-11 14:29:39,924 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2024-10-11 14:29:39,924 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 152 transitions, 1265 flow [2024-10-11 14:29:39,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 14:29:39,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:39,924 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 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 14:29:39,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:29:39,925 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 14:29:39,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash 207358181, now seen corresponding path program 4 times [2024-10-11 14:29:39,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:39,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139333386] [2024-10-11 14:29:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 14:29:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139333386] [2024-10-11 14:29:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139333386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:29:40,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:29:40,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:29:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964221343] [2024-10-11 14:29:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:29:40,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:29:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:29:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:29:40,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-11 14:29:40,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 152 transitions, 1265 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:29:40,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:40,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-11 14:29:40,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:40,319 INFO L124 PetriNetUnfolderBase]: 803/1689 cut-off events. [2024-10-11 14:29:40,320 INFO L125 PetriNetUnfolderBase]: For 20383/20453 co-relation queries the response was YES. [2024-10-11 14:29:40,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8510 conditions, 1689 events. 803/1689 cut-off events. For 20383/20453 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 10080 event pairs, 239 based on Foata normal form. 165/1815 useless extension candidates. Maximal degree in co-relation 6764. Up to 761 conditions per place. [2024-10-11 14:29:40,335 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 70 selfloop transitions, 22 changer transitions 0/128 dead transitions. [2024-10-11 14:29:40,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 128 transitions, 1274 flow [2024-10-11 14:29:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:29:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:29:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-11 14:29:40,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-10-11 14:29:40,337 INFO L175 Difference]: Start difference. First operand has 100 places, 152 transitions, 1265 flow. Second operand 4 states and 69 transitions. [2024-10-11 14:29:40,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 128 transitions, 1274 flow [2024-10-11 14:29:40,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 1213 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:40,374 INFO L231 Difference]: Finished difference. Result has 98 places, 113 transitions, 1001 flow [2024-10-11 14:29:40,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1001, PETRI_PLACES=98, PETRI_TRANSITIONS=113} [2024-10-11 14:29:40,375 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-10-11 14:29:40,375 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 113 transitions, 1001 flow [2024-10-11 14:29:40,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 14:29:40,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:40,375 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 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 14:29:40,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:29:40,376 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 14:29:40,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash 804633747, now seen corresponding path program 5 times [2024-10-11 14:29:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:40,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534815587] [2024-10-11 14:29:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:40,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534815587] [2024-10-11 14:29:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534815587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:40,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586217097] [2024-10-11 14:29:40,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:29:40,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:40,660 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 14:29:40,661 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 14:29:40,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 14:29:40,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:40,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:29:40,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:29:40,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 14:29:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586217097] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:40,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:40,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 12 [2024-10-11 14:29:40,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878310827] [2024-10-11 14:29:40,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:40,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:29:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:29:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:29:40,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2024-10-11 14:29:40,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 113 transitions, 1001 flow. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 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 14:29:40,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:40,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2024-10-11 14:29:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:41,160 INFO L124 PetriNetUnfolderBase]: 796/1605 cut-off events. [2024-10-11 14:29:41,160 INFO L125 PetriNetUnfolderBase]: For 16050/16202 co-relation queries the response was YES. [2024-10-11 14:29:41,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8172 conditions, 1605 events. 796/1605 cut-off events. For 16050/16202 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9208 event pairs, 172 based on Foata normal form. 85/1650 useless extension candidates. Maximal degree in co-relation 6795. Up to 607 conditions per place. [2024-10-11 14:29:41,167 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2024-10-11 14:29:41,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 1330 flow [2024-10-11 14:29:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:29:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:29:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-10-11 14:29:41,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-11 14:29:41,168 INFO L175 Difference]: Start difference. First operand has 98 places, 113 transitions, 1001 flow. Second operand 5 states and 80 transitions. [2024-10-11 14:29:41,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 1330 flow [2024-10-11 14:29:41,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 129 transitions, 1253 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-10-11 14:29:41,190 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2024-10-11 14:29:41,190 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2024-10-11 14:29:41,191 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-10-11 14:29:41,191 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2024-10-11 14:29:41,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 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 14:29:41,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-11 14:29:41,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-11 14:29:41,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-11 14:29:41,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:29:41,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:29:41,395 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:41,398 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:29:41,398 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:29:41,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:41 BasicIcfg [2024-10-11 14:29:41,402 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:29:41,402 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:29:41,402 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:29:41,406 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:29:41,406 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:32" (3/4) ... [2024-10-11 14:29:41,408 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:29:41,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-11 14:29:41,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-11 14:29:41,415 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2024-10-11 14:29:41,415 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-11 14:29:41,415 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 14:29:41,415 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 14:29:41,496 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:29:41,497 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:29:41,497 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:29:41,497 INFO L158 Benchmark]: Toolchain (without parser) took 9739.21ms. Allocated memory was 184.5MB in the beginning and 998.2MB in the end (delta: 813.7MB). Free memory was 113.1MB in the beginning and 774.9MB in the end (delta: -661.8MB). Peak memory consumption was 152.1MB. Max. memory is 16.1GB. [2024-10-11 14:29:41,498 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 184.5MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:29:41,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.33ms. Allocated memory is still 184.5MB. Free memory was 112.9MB in the beginning and 100.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 14:29:41,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.25ms. Allocated memory is still 184.5MB. Free memory was 100.1MB in the beginning and 98.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:29:41,498 INFO L158 Benchmark]: Boogie Preprocessor took 51.53ms. Allocated memory is still 184.5MB. Free memory was 98.5MB in the beginning and 96.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:29:41,498 INFO L158 Benchmark]: RCFGBuilder took 413.41ms. Allocated memory is still 184.5MB. Free memory was 96.7MB in the beginning and 135.1MB in the end (delta: -38.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-10-11 14:29:41,499 INFO L158 Benchmark]: TraceAbstraction took 8888.41ms. Allocated memory was 184.5MB in the beginning and 998.2MB in the end (delta: 813.7MB). Free memory was 134.2MB in the beginning and 779.1MB in the end (delta: -644.9MB). Peak memory consumption was 334.3MB. Max. memory is 16.1GB. [2024-10-11 14:29:41,499 INFO L158 Benchmark]: Witness Printer took 94.83ms. Allocated memory is still 998.2MB. Free memory was 779.1MB in the beginning and 774.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:29:41,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 184.5MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.33ms. Allocated memory is still 184.5MB. Free memory was 112.9MB in the beginning and 100.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.25ms. Allocated memory is still 184.5MB. Free memory was 100.1MB in the beginning and 98.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.53ms. Allocated memory is still 184.5MB. Free memory was 98.5MB in the beginning and 96.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 413.41ms. Allocated memory is still 184.5MB. Free memory was 96.7MB in the beginning and 135.1MB in the end (delta: -38.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8888.41ms. Allocated memory was 184.5MB in the beginning and 998.2MB in the end (delta: 813.7MB). Free memory was 134.2MB in the beginning and 779.1MB in the end (delta: -644.9MB). Peak memory consumption was 334.3MB. Max. memory is 16.1GB. * Witness Printer took 94.83ms. Allocated memory is still 998.2MB. Free memory was 779.1MB in the beginning and 774.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 445 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 428 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1001 IncrementalHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 8 mSDtfsCounter, 1001 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1265occurred in iteration=10, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 2469 SizeOfPredicates, 12 NumberOfNonLiveVariables, 583 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 106/179 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:29:41,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE