./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:44:56,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:44:56,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:44:56,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:44:56,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:44:56,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:44:56,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:44:56,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:44:56,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:44:56,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:44:56,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:44:56,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:44:56,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:44:56,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:44:56,621 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:44:56,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:44:56,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:44:56,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:44:56,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:44:56,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:44:56,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:44:56,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:44:56,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:44:56,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:44:56,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:44:56,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:44:56,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:44:56,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:44:56,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:44:56,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:44:56,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:44:56,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:44:56,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:44:56,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:44:56,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:44:56,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:44:56,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:44:56,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:44:56,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:44:56,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:44:56,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:44:56,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:44:56,630 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-11-09 02:44:56,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:44:56,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:44:56,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:44:56,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:44:56,964 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:44:56,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-09 02:44:58,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:44:58,521 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:44:58,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-11-09 02:44:58,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5170c4587/d310927770e64aca8a5711bd60de3539/FLAG60e6e2d46 [2024-11-09 02:44:58,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5170c4587/d310927770e64aca8a5711bd60de3539 [2024-11-09 02:44:58,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:44:58,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:44:58,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:44:58,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:44:58,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:44:58,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e2f668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58, skipping insertion in model container [2024-11-09 02:44:58,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,589 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:44:58,805 WARN L250 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/popl20-bad-counter-queue2.wvr.c[2297,2310] [2024-11-09 02:44:58,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:44:58,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:44:58,863 WARN L250 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/popl20-bad-counter-queue2.wvr.c[2297,2310] [2024-11-09 02:44:58,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:44:58,895 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:44:58,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58 WrapperNode [2024-11-09 02:44:58,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:44:58,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:44:58,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:44:58,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:44:58,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,938 INFO L138 Inliner]: procedures = 25, calls = 26, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2024-11-09 02:44:58,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:44:58,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:44:58,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:44:58,939 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:44:58,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,962 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 02:44:58,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:44:58,974 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:44:58,974 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:44:58,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:44:58,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (1/1) ... [2024-11-09 02:44:58,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:44:58,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:44:59,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:44:59,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:44:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:44:59,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:44:59,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:44:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:44:59,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:44:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:44:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:44:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:44:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:44:59,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:44:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:44:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:44:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:44:59,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:44:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:44:59,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:44:59,047 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:44:59,225 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:44:59,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:44:59,747 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:44:59,747 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:44:59,885 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:44:59,885 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 02:44:59,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:44:59 BoogieIcfgContainer [2024-11-09 02:44:59,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:44:59,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:44:59,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:44:59,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:44:59,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:44:58" (1/3) ... [2024-11-09 02:44:59,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ff5ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:44:59, skipping insertion in model container [2024-11-09 02:44:59,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:44:58" (2/3) ... [2024-11-09 02:44:59,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ff5ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:44:59, skipping insertion in model container [2024-11-09 02:44:59,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:44:59" (3/3) ... [2024-11-09 02:44:59,892 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-11-09 02:44:59,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:44:59,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:44:59,905 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:44:59,946 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:44:59,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 62 flow [2024-11-09 02:44:59,988 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-09 02:44:59,988 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:44:59,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 3/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-09 02:44:59,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 62 flow [2024-11-09 02:44:59,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 21 transitions, 54 flow [2024-11-09 02:44:59,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:45:00,003 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;@70230acf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:45:00,004 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:45:00,010 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:45:00,010 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-09 02:45:00,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:45:00,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:00,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:00,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:00,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash -15705077, now seen corresponding path program 1 times [2024-11-09 02:45:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321110921] [2024-11-09 02:45:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:00,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321110921] [2024-11-09 02:45:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321110921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:00,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:45:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828654650] [2024-11-09 02:45:00,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:00,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:45:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:45:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:45:00,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:00,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:00,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:00,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:00,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:00,333 INFO L124 PetriNetUnfolderBase]: 93/181 cut-off events. [2024-11-09 02:45:00,334 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 02:45:00,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 181 events. 93/181 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 581 event pairs, 22 based on Foata normal form. 1/177 useless extension candidates. Maximal degree in co-relation 315. Up to 113 conditions per place. [2024-11-09 02:45:00,337 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 25 selfloop transitions, 3 changer transitions 1/32 dead transitions. [2024-11-09 02:45:00,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 143 flow [2024-11-09 02:45:00,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:45:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:45:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-09 02:45:00,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 02:45:00,347 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 54 flow. Second operand 3 states and 45 transitions. [2024-11-09 02:45:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 143 flow [2024-11-09 02:45:00,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 32 transitions, 129 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:45:00,351 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 65 flow [2024-11-09 02:45:00,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2024-11-09 02:45:00,355 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-11-09 02:45:00,356 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 65 flow [2024-11-09 02:45:00,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:00,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:00,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:00,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:45:00,357 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:00,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:00,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1557574075, now seen corresponding path program 1 times [2024-11-09 02:45:00,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:00,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764885471] [2024-11-09 02:45:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:00,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764885471] [2024-11-09 02:45:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764885471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:00,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:00,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:45:00,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191935962] [2024-11-09 02:45:00,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:00,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:45:00,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:45:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:45:00,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:00,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:00,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:00,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:00,636 INFO L124 PetriNetUnfolderBase]: 171/329 cut-off events. [2024-11-09 02:45:00,637 INFO L125 PetriNetUnfolderBase]: For 43/46 co-relation queries the response was YES. [2024-11-09 02:45:00,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 329 events. 171/329 cut-off events. For 43/46 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1328 event pairs, 111 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 257. Up to 209 conditions per place. [2024-11-09 02:45:00,641 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 40 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-11-09 02:45:00,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 47 transitions, 220 flow [2024-11-09 02:45:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-09 02:45:00,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-09 02:45:00,643 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 65 flow. Second operand 5 states and 62 transitions. [2024-11-09 02:45:00,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 47 transitions, 220 flow [2024-11-09 02:45:00,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 47 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:00,645 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 98 flow [2024-11-09 02:45:00,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2024-11-09 02:45:00,645 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2024-11-09 02:45:00,646 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 98 flow [2024-11-09 02:45:00,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:00,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:00,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:00,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:45:00,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:00,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:00,647 INFO L85 PathProgramCache]: Analyzing trace with hash -577907976, now seen corresponding path program 1 times [2024-11-09 02:45:00,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:00,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756046476] [2024-11-09 02:45:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:00,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:00,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:00,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756046476] [2024-11-09 02:45:00,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756046476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:00,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:00,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:45:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747570165] [2024-11-09 02:45:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:00,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:45:00,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:45:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:45:00,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:00,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:00,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:00,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:00,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:00,850 INFO L124 PetriNetUnfolderBase]: 138/264 cut-off events. [2024-11-09 02:45:00,851 INFO L125 PetriNetUnfolderBase]: For 100/114 co-relation queries the response was YES. [2024-11-09 02:45:00,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 264 events. 138/264 cut-off events. For 100/114 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 961 event pairs, 95 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 509. Up to 205 conditions per place. [2024-11-09 02:45:00,852 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 20 selfloop transitions, 2 changer transitions 15/39 dead transitions. [2024-11-09 02:45:00,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 209 flow [2024-11-09 02:45:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-11-09 02:45:00,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-09 02:45:00,854 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 98 flow. Second operand 5 states and 56 transitions. [2024-11-09 02:45:00,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 209 flow [2024-11-09 02:45:00,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 205 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:00,856 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 86 flow [2024-11-09 02:45:00,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2024-11-09 02:45:00,857 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2024-11-09 02:45:00,857 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 86 flow [2024-11-09 02:45:00,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:00,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:00,857 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:00,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:45:00,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:00,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 182329702, now seen corresponding path program 1 times [2024-11-09 02:45:00,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:00,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869869410] [2024-11-09 02:45:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869869410] [2024-11-09 02:45:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869869410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075441214] [2024-11-09 02:45:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:00,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:00,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:00,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:45:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:01,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:45:01,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:01,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075441214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:01,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:01,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-09 02:45:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819868302] [2024-11-09 02:45:01,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:01,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 02:45:01,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 02:45:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:45:01,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:01,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 86 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:01,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:01,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:01,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:01,316 INFO L124 PetriNetUnfolderBase]: 139/249 cut-off events. [2024-11-09 02:45:01,317 INFO L125 PetriNetUnfolderBase]: For 83/103 co-relation queries the response was YES. [2024-11-09 02:45:01,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 249 events. 139/249 cut-off events. For 83/103 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 835 event pairs, 33 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 642. Up to 101 conditions per place. [2024-11-09 02:45:01,320 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 31 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-11-09 02:45:01,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 214 flow [2024-11-09 02:45:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:45:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:45:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-09 02:45:01,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-09 02:45:01,324 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 86 flow. Second operand 7 states and 64 transitions. [2024-11-09 02:45:01,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 214 flow [2024-11-09 02:45:01,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 186 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-09 02:45:01,326 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 97 flow [2024-11-09 02:45:01,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-09 02:45:01,327 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2024-11-09 02:45:01,327 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 97 flow [2024-11-09 02:45:01,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:01,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:01,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:01,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:01,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:01,533 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:01,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -490579767, now seen corresponding path program 1 times [2024-11-09 02:45:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355452641] [2024-11-09 02:45:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:01,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355452641] [2024-11-09 02:45:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355452641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96003976] [2024-11-09 02:45:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:01,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:01,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:45:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:01,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:45:01,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:01,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:01,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96003976] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:01,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:45:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-09 02:45:01,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108373913] [2024-11-09 02:45:01,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:01,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:45:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:45:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:45:01,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:01,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:01,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:01,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:01,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:01,878 INFO L124 PetriNetUnfolderBase]: 136/254 cut-off events. [2024-11-09 02:45:01,879 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-09 02:45:01,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 254 events. 136/254 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 814 event pairs, 43 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 649. Up to 130 conditions per place. [2024-11-09 02:45:01,881 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-11-09 02:45:01,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 201 flow [2024-11-09 02:45:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-11-09 02:45:01,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-11-09 02:45:01,881 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 97 flow. Second operand 5 states and 49 transitions. [2024-11-09 02:45:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 201 flow [2024-11-09 02:45:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:01,883 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 117 flow [2024-11-09 02:45:01,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-09 02:45:01,884 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-11-09 02:45:01,884 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 117 flow [2024-11-09 02:45:01,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:01,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:01,884 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] [2024-11-09 02:45:01,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:45:02,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:02,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:02,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1176065503, now seen corresponding path program 1 times [2024-11-09 02:45:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944512801] [2024-11-09 02:45:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:02,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:02,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944512801] [2024-11-09 02:45:02,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944512801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:02,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673966154] [2024-11-09 02:45:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:02,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:02,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:02,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:02,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:45:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:02,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:45:02,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:02,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:02,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:02,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-11-09 02:45:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673966154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:02,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2024-11-09 02:45:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489965001] [2024-11-09 02:45:02,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:02,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:45:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:45:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:45:02,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:02,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:02,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:02,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:02,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:02,859 INFO L124 PetriNetUnfolderBase]: 172/341 cut-off events. [2024-11-09 02:45:02,859 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-09 02:45:02,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 341 events. 172/341 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1329 event pairs, 29 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 1000. Up to 195 conditions per place. [2024-11-09 02:45:02,864 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 41 selfloop transitions, 23 changer transitions 2/71 dead transitions. [2024-11-09 02:45:02,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 419 flow [2024-11-09 02:45:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:45:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:45:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-11-09 02:45:02,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-09 02:45:02,866 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 117 flow. Second operand 10 states and 114 transitions. [2024-11-09 02:45:02,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 419 flow [2024-11-09 02:45:02,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 408 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:45:02,869 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 288 flow [2024-11-09 02:45:02,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=288, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-09 02:45:02,873 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 23 predicate places. [2024-11-09 02:45:02,873 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 288 flow [2024-11-09 02:45:02,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:02,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:02,874 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] [2024-11-09 02:45:02,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:45:03,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:03,074 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:03,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1605095481, now seen corresponding path program 2 times [2024-11-09 02:45:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:03,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566864034] [2024-11-09 02:45:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:03,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566864034] [2024-11-09 02:45:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566864034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:03,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230354717] [2024-11-09 02:45:03,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:45:03,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:03,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:03,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:03,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:45:03,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:03,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:03,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:45:03,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:03,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:03,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:03,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-11-09 02:45:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230354717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:03,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:03,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-11-09 02:45:03,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265223265] [2024-11-09 02:45:03,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:03,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:45:03,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:45:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:45:03,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:03,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 288 flow. Second operand has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:03,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:03,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:03,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:03,786 INFO L124 PetriNetUnfolderBase]: 212/424 cut-off events. [2024-11-09 02:45:03,789 INFO L125 PetriNetUnfolderBase]: For 719/723 co-relation queries the response was YES. [2024-11-09 02:45:03,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 424 events. 212/424 cut-off events. For 719/723 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1843 event pairs, 37 based on Foata normal form. 5/427 useless extension candidates. Maximal degree in co-relation 1486. Up to 208 conditions per place. [2024-11-09 02:45:03,798 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 36 selfloop transitions, 39 changer transitions 1/81 dead transitions. [2024-11-09 02:45:03,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 610 flow [2024-11-09 02:45:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:45:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:45:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-11-09 02:45:03,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-11-09 02:45:03,805 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 288 flow. Second operand 9 states and 103 transitions. [2024-11-09 02:45:03,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 610 flow [2024-11-09 02:45:03,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 578 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:03,817 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 475 flow [2024-11-09 02:45:03,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=475, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2024-11-09 02:45:03,818 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2024-11-09 02:45:03,818 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 475 flow [2024-11-09 02:45:03,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:03,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:03,818 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] [2024-11-09 02:45:03,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:04,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:04,019 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:04,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash -640245501, now seen corresponding path program 3 times [2024-11-09 02:45:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786241637] [2024-11-09 02:45:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:04,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786241637] [2024-11-09 02:45:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786241637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489410876] [2024-11-09 02:45:04,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:45:04,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:04,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:04,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:04,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:45:04,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:45:04,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:04,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:45:04,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:04,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:04,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:04,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-11-09 02:45:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489410876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:04,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-09 02:45:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329968366] [2024-11-09 02:45:04,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:04,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:45:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:45:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:45:04,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:04,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 475 flow. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:04,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:04,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:04,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:04,915 INFO L124 PetriNetUnfolderBase]: 268/537 cut-off events. [2024-11-09 02:45:04,916 INFO L125 PetriNetUnfolderBase]: For 1170/1178 co-relation queries the response was YES. [2024-11-09 02:45:04,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 537 events. 268/537 cut-off events. For 1170/1178 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2543 event pairs, 37 based on Foata normal form. 9/542 useless extension candidates. Maximal degree in co-relation 2038. Up to 223 conditions per place. [2024-11-09 02:45:04,920 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 44 selfloop transitions, 55 changer transitions 1/105 dead transitions. [2024-11-09 02:45:04,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 878 flow [2024-11-09 02:45:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:45:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:45:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-11-09 02:45:04,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-11-09 02:45:04,921 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 475 flow. Second operand 11 states and 125 transitions. [2024-11-09 02:45:04,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 878 flow [2024-11-09 02:45:04,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 815 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:04,927 INFO L231 Difference]: Finished difference. Result has 65 places, 78 transitions, 679 flow [2024-11-09 02:45:04,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=679, PETRI_PLACES=65, PETRI_TRANSITIONS=78} [2024-11-09 02:45:04,927 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 40 predicate places. [2024-11-09 02:45:04,928 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 78 transitions, 679 flow [2024-11-09 02:45:04,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:04,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:04,928 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] [2024-11-09 02:45:04,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:05,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:05,129 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:05,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash -433954945, now seen corresponding path program 4 times [2024-11-09 02:45:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:05,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971488845] [2024-11-09 02:45:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:05,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971488845] [2024-11-09 02:45:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971488845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373847370] [2024-11-09 02:45:05,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:45:05,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:05,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:05,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:05,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:45:05,537 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:45:05,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:05,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:45:05,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:05,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:05,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:05,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-11-09 02:45:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373847370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:05,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:05,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-09 02:45:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618947581] [2024-11-09 02:45:05,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:05,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:45:05,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:45:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:45:05,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:05,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 78 transitions, 679 flow. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:05,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:05,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:05,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:05,946 INFO L124 PetriNetUnfolderBase]: 307/612 cut-off events. [2024-11-09 02:45:05,947 INFO L125 PetriNetUnfolderBase]: For 1570/1576 co-relation queries the response was YES. [2024-11-09 02:45:05,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 612 events. 307/612 cut-off events. For 1570/1576 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3073 event pairs, 60 based on Foata normal form. 5/613 useless extension candidates. Maximal degree in co-relation 2412. Up to 457 conditions per place. [2024-11-09 02:45:05,953 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 76 selfloop transitions, 22 changer transitions 1/104 dead transitions. [2024-11-09 02:45:05,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 1003 flow [2024-11-09 02:45:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:45:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:45:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-11-09 02:45:05,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-11-09 02:45:05,955 INFO L175 Difference]: Start difference. First operand has 65 places, 78 transitions, 679 flow. Second operand 9 states and 97 transitions. [2024-11-09 02:45:05,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 1003 flow [2024-11-09 02:45:05,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 104 transitions, 963 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:05,966 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 788 flow [2024-11-09 02:45:05,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=788, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2024-11-09 02:45:05,967 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 50 predicate places. [2024-11-09 02:45:05,968 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 788 flow [2024-11-09 02:45:05,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:05,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:05,969 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] [2024-11-09 02:45:05,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:06,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:06,170 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:06,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -693469303, now seen corresponding path program 5 times [2024-11-09 02:45:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633808546] [2024-11-09 02:45:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:06,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633808546] [2024-11-09 02:45:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633808546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106327211] [2024-11-09 02:45:06,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:45:06,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:06,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:06,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:45:06,667 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:06,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:06,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 02:45:06,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:06,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:06,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:06,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-11-09 02:45:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:06,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106327211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:06,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:06,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2024-11-09 02:45:06,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411992163] [2024-11-09 02:45:06,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:06,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:45:06,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:06,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:45:06,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:45:06,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:06,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 788 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:06,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:06,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:07,315 INFO L124 PetriNetUnfolderBase]: 346/685 cut-off events. [2024-11-09 02:45:07,315 INFO L125 PetriNetUnfolderBase]: For 1911/1915 co-relation queries the response was YES. [2024-11-09 02:45:07,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 685 events. 346/685 cut-off events. For 1911/1915 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3516 event pairs, 65 based on Foata normal form. 5/684 useless extension candidates. Maximal degree in co-relation 2731. Up to 466 conditions per place. [2024-11-09 02:45:07,320 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 77 selfloop transitions, 36 changer transitions 1/119 dead transitions. [2024-11-09 02:45:07,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1170 flow [2024-11-09 02:45:07,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:45:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:45:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-09 02:45:07,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-09 02:45:07,323 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 788 flow. Second operand 10 states and 108 transitions. [2024-11-09 02:45:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1170 flow [2024-11-09 02:45:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 1158 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:07,328 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 971 flow [2024-11-09 02:45:07,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=971, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-11-09 02:45:07,329 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2024-11-09 02:45:07,329 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 971 flow [2024-11-09 02:45:07,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:07,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:07,329 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] [2024-11-09 02:45:07,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:45:07,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:07,534 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:07,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1269651843, now seen corresponding path program 6 times [2024-11-09 02:45:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:07,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469286063] [2024-11-09 02:45:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:07,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:07,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469286063] [2024-11-09 02:45:07,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469286063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:07,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525238781] [2024-11-09 02:45:07,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:45:07,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:07,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:07,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:45:08,021 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:45:08,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:08,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:45:08,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:08,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:08,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:08,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-11-09 02:45:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525238781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:08,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:08,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-09 02:45:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732838880] [2024-11-09 02:45:08,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:08,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:45:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:45:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:45:08,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 02:45:08,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 971 flow. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:08,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:08,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 02:45:08,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:08,400 INFO L124 PetriNetUnfolderBase]: 388/776 cut-off events. [2024-11-09 02:45:08,400 INFO L125 PetriNetUnfolderBase]: For 2698/2702 co-relation queries the response was YES. [2024-11-09 02:45:08,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 776 events. 388/776 cut-off events. For 2698/2702 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4135 event pairs, 66 based on Foata normal form. 5/775 useless extension candidates. Maximal degree in co-relation 3284. Up to 475 conditions per place. [2024-11-09 02:45:08,406 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 80 selfloop transitions, 52 changer transitions 1/138 dead transitions. [2024-11-09 02:45:08,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 1456 flow [2024-11-09 02:45:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:45:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:45:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-11-09 02:45:08,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-11-09 02:45:08,407 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 971 flow. Second operand 12 states and 125 transitions. [2024-11-09 02:45:08,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 1456 flow [2024-11-09 02:45:08,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 1390 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:08,415 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 1195 flow [2024-11-09 02:45:08,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1195, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2024-11-09 02:45:08,415 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 68 predicate places. [2024-11-09 02:45:08,415 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 1195 flow [2024-11-09 02:45:08,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:08,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:08,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:08,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 02:45:08,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 02:45:08,621 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:08,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:08,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1710960789, now seen corresponding path program 7 times [2024-11-09 02:45:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:08,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669962618] [2024-11-09 02:45:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:08,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669962618] [2024-11-09 02:45:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669962618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689085979] [2024-11-09 02:45:08,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:45:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:08,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:08,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:45:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:08,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:45:08,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:08,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:08,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689085979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:08,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:08,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:45:08,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406390773] [2024-11-09 02:45:08,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:08,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:45:08,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:45:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:45:08,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:08,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 1195 flow. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:08,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:08,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:08,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:09,085 INFO L124 PetriNetUnfolderBase]: 863/1646 cut-off events. [2024-11-09 02:45:09,086 INFO L125 PetriNetUnfolderBase]: For 6320/6323 co-relation queries the response was YES. [2024-11-09 02:45:09,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 1646 events. 863/1646 cut-off events. For 6320/6323 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9876 event pairs, 379 based on Foata normal form. 60/1704 useless extension candidates. Maximal degree in co-relation 5864. Up to 900 conditions per place. [2024-11-09 02:45:09,098 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 208 selfloop transitions, 26 changer transitions 0/237 dead transitions. [2024-11-09 02:45:09,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 237 transitions, 2872 flow [2024-11-09 02:45:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:45:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:45:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-11-09 02:45:09,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-09 02:45:09,099 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 1195 flow. Second operand 7 states and 81 transitions. [2024-11-09 02:45:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 237 transitions, 2872 flow [2024-11-09 02:45:09,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 237 transitions, 2776 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-09 02:45:09,113 INFO L231 Difference]: Finished difference. Result has 100 places, 141 transitions, 1569 flow [2024-11-09 02:45:09,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1569, PETRI_PLACES=100, PETRI_TRANSITIONS=141} [2024-11-09 02:45:09,114 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 75 predicate places. [2024-11-09 02:45:09,114 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 141 transitions, 1569 flow [2024-11-09 02:45:09,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:09,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:09,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:09,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:45:09,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:09,315 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:09,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 579955054, now seen corresponding path program 8 times [2024-11-09 02:45:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899428382] [2024-11-09 02:45:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:09,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899428382] [2024-11-09 02:45:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899428382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460413521] [2024-11-09 02:45:09,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:45:09,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:09,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:09,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:45:09,476 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:09,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:09,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:45:09,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:09,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:09,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460413521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:09,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:09,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:45:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200649362] [2024-11-09 02:45:09,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:09,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:45:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:45:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:45:09,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:09,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 141 transitions, 1569 flow. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:09,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:09,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:09,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:09,851 INFO L124 PetriNetUnfolderBase]: 761/1454 cut-off events. [2024-11-09 02:45:09,851 INFO L125 PetriNetUnfolderBase]: For 6419/6467 co-relation queries the response was YES. [2024-11-09 02:45:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 1454 events. 761/1454 cut-off events. For 6419/6467 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8533 event pairs, 373 based on Foata normal form. 55/1507 useless extension candidates. Maximal degree in co-relation 5360. Up to 917 conditions per place. [2024-11-09 02:45:09,858 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 112 selfloop transitions, 3 changer transitions 82/200 dead transitions. [2024-11-09 02:45:09,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 200 transitions, 2558 flow [2024-11-09 02:45:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:45:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:45:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-11-09 02:45:09,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-09 02:45:09,860 INFO L175 Difference]: Start difference. First operand has 100 places, 141 transitions, 1569 flow. Second operand 7 states and 78 transitions. [2024-11-09 02:45:09,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 200 transitions, 2558 flow [2024-11-09 02:45:09,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 2542 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:09,877 INFO L231 Difference]: Finished difference. Result has 107 places, 118 transitions, 1251 flow [2024-11-09 02:45:09,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1251, PETRI_PLACES=107, PETRI_TRANSITIONS=118} [2024-11-09 02:45:09,878 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 82 predicate places. [2024-11-09 02:45:09,878 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 118 transitions, 1251 flow [2024-11-09 02:45:09,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:09,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:09,878 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] [2024-11-09 02:45:09,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:45:10,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 02:45:10,079 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:10,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1021328404, now seen corresponding path program 9 times [2024-11-09 02:45:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254214093] [2024-11-09 02:45:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:10,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:10,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254214093] [2024-11-09 02:45:10,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254214093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:10,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077593278] [2024-11-09 02:45:10,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:45:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:10,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:10,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:10,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:45:10,276 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:45:10,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:10,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:45:10,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:10,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:10,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077593278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:10,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-09 02:45:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520966683] [2024-11-09 02:45:10,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:10,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:45:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:45:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:45:10,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:10,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 118 transitions, 1251 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:10,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:10,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:10,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:10,640 INFO L124 PetriNetUnfolderBase]: 489/878 cut-off events. [2024-11-09 02:45:10,641 INFO L125 PetriNetUnfolderBase]: For 3766/3816 co-relation queries the response was YES. [2024-11-09 02:45:10,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 878 events. 489/878 cut-off events. For 3766/3816 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4182 event pairs, 75 based on Foata normal form. 62/939 useless extension candidates. Maximal degree in co-relation 4144. Up to 380 conditions per place. [2024-11-09 02:45:10,650 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 107 selfloop transitions, 29 changer transitions 0/139 dead transitions. [2024-11-09 02:45:10,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 139 transitions, 1657 flow [2024-11-09 02:45:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:45:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:45:10,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-09 02:45:10,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37962962962962965 [2024-11-09 02:45:10,651 INFO L175 Difference]: Start difference. First operand has 107 places, 118 transitions, 1251 flow. Second operand 9 states and 82 transitions. [2024-11-09 02:45:10,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 139 transitions, 1657 flow [2024-11-09 02:45:10,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 139 transitions, 1493 flow, removed 59 selfloop flow, removed 12 redundant places. [2024-11-09 02:45:10,664 INFO L231 Difference]: Finished difference. Result has 99 places, 120 transitions, 1204 flow [2024-11-09 02:45:10,664 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1204, PETRI_PLACES=99, PETRI_TRANSITIONS=120} [2024-11-09 02:45:10,665 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 74 predicate places. [2024-11-09 02:45:10,665 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 120 transitions, 1204 flow [2024-11-09 02:45:10,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:10,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:10,665 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] [2024-11-09 02:45:10,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:10,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 02:45:10,866 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:10,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash 211509263, now seen corresponding path program 10 times [2024-11-09 02:45:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:10,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615063499] [2024-11-09 02:45:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:10,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:10,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615063499] [2024-11-09 02:45:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615063499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465197813] [2024-11-09 02:45:10,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:45:10,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:10,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:10,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:45:11,007 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:45:11,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:11,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:45:11,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:11,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465197813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:11,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:11,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:45:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734932874] [2024-11-09 02:45:11,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:11,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:45:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:45:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:45:11,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:11,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 120 transitions, 1204 flow. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:11,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:11,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:11,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:11,706 INFO L124 PetriNetUnfolderBase]: 635/1075 cut-off events. [2024-11-09 02:45:11,706 INFO L125 PetriNetUnfolderBase]: For 3658/3658 co-relation queries the response was YES. [2024-11-09 02:45:11,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4828 conditions, 1075 events. 635/1075 cut-off events. For 3658/3658 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4583 event pairs, 135 based on Foata normal form. 68/1143 useless extension candidates. Maximal degree in co-relation 4773. Up to 435 conditions per place. [2024-11-09 02:45:11,724 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 130 selfloop transitions, 28 changer transitions 0/159 dead transitions. [2024-11-09 02:45:11,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1772 flow [2024-11-09 02:45:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:45:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:45:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-11-09 02:45:11,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-11-09 02:45:11,734 INFO L175 Difference]: Start difference. First operand has 99 places, 120 transitions, 1204 flow. Second operand 9 states and 80 transitions. [2024-11-09 02:45:11,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1772 flow [2024-11-09 02:45:11,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 159 transitions, 1724 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 02:45:11,758 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 1273 flow [2024-11-09 02:45:11,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1273, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2024-11-09 02:45:11,763 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2024-11-09 02:45:11,763 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 1273 flow [2024-11-09 02:45:11,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:11,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:11,763 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:11,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 02:45:11,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:45:11,964 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:11,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1193675087, now seen corresponding path program 11 times [2024-11-09 02:45:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:11,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649548624] [2024-11-09 02:45:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649548624] [2024-11-09 02:45:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649548624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:12,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446917239] [2024-11-09 02:45:12,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:45:12,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:12,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:12,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:12,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:45:12,728 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:45:12,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:12,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 02:45:12,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:12,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:13,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:13,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:13,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446917239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:13,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:13,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 27 [2024-11-09 02:45:13,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771775493] [2024-11-09 02:45:13,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:13,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 02:45:13,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 02:45:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-11-09 02:45:13,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:13,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 1273 flow. Second operand has 28 states, 28 states have (on average 6.035714285714286) internal successors, (169), 28 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:13,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:13,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:13,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:14,540 INFO L124 PetriNetUnfolderBase]: 592/1110 cut-off events. [2024-11-09 02:45:14,540 INFO L125 PetriNetUnfolderBase]: For 4176/4179 co-relation queries the response was YES. [2024-11-09 02:45:14,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 1110 events. 592/1110 cut-off events. For 4176/4179 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5466 event pairs, 11 based on Foata normal form. 3/1110 useless extension candidates. Maximal degree in co-relation 5102. Up to 589 conditions per place. [2024-11-09 02:45:14,548 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 125 selfloop transitions, 84 changer transitions 1/214 dead transitions. [2024-11-09 02:45:14,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 214 transitions, 2224 flow [2024-11-09 02:45:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 02:45:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 02:45:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 224 transitions. [2024-11-09 02:45:14,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-11-09 02:45:14,549 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 1273 flow. Second operand 23 states and 224 transitions. [2024-11-09 02:45:14,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 214 transitions, 2224 flow [2024-11-09 02:45:14,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 214 transitions, 2217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:45:14,561 INFO L231 Difference]: Finished difference. Result has 127 places, 151 transitions, 1733 flow [2024-11-09 02:45:14,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1733, PETRI_PLACES=127, PETRI_TRANSITIONS=151} [2024-11-09 02:45:14,561 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 102 predicate places. [2024-11-09 02:45:14,561 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 151 transitions, 1733 flow [2024-11-09 02:45:14,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.035714285714286) internal successors, (169), 28 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:14,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:14,562 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:14,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:14,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:45:14,767 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:14,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1990867275, now seen corresponding path program 12 times [2024-11-09 02:45:14,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:14,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970106154] [2024-11-09 02:45:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:14,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:15,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:15,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970106154] [2024-11-09 02:45:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970106154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774585321] [2024-11-09 02:45:15,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:45:15,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:15,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:15,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:15,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:45:15,827 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:45:15,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:15,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 02:45:15,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:15,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:45:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:16,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:16,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774585321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:16,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:16,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 9] total 31 [2024-11-09 02:45:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497784416] [2024-11-09 02:45:16,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:16,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 02:45:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 02:45:16,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-11-09 02:45:16,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:16,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 151 transitions, 1733 flow. Second operand has 32 states, 32 states have (on average 6.0) internal successors, (192), 32 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:16,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:16,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:16,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:17,762 INFO L124 PetriNetUnfolderBase]: 760/1421 cut-off events. [2024-11-09 02:45:17,762 INFO L125 PetriNetUnfolderBase]: For 6660/6663 co-relation queries the response was YES. [2024-11-09 02:45:17,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7216 conditions, 1421 events. 760/1421 cut-off events. For 6660/6663 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7607 event pairs, 72 based on Foata normal form. 3/1419 useless extension candidates. Maximal degree in co-relation 7152. Up to 816 conditions per place. [2024-11-09 02:45:17,790 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 133 selfloop transitions, 95 changer transitions 1/233 dead transitions. [2024-11-09 02:45:17,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 233 transitions, 2724 flow [2024-11-09 02:45:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 02:45:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 02:45:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 210 transitions. [2024-11-09 02:45:17,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-11-09 02:45:17,793 INFO L175 Difference]: Start difference. First operand has 127 places, 151 transitions, 1733 flow. Second operand 22 states and 210 transitions. [2024-11-09 02:45:17,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 233 transitions, 2724 flow [2024-11-09 02:45:17,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 233 transitions, 2611 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-11-09 02:45:17,821 INFO L231 Difference]: Finished difference. Result has 145 places, 178 transitions, 2190 flow [2024-11-09 02:45:17,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2190, PETRI_PLACES=145, PETRI_TRANSITIONS=178} [2024-11-09 02:45:17,822 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 120 predicate places. [2024-11-09 02:45:17,822 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 178 transitions, 2190 flow [2024-11-09 02:45:17,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.0) internal successors, (192), 32 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:17,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:17,823 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:17,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 02:45:18,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:18,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:18,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash -30915573, now seen corresponding path program 13 times [2024-11-09 02:45:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676336252] [2024-11-09 02:45:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:18,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:18,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:18,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676336252] [2024-11-09 02:45:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676336252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580092664] [2024-11-09 02:45:18,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:45:18,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:18,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:18,632 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:18,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:45:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:18,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:45:18,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:18,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:19,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:19,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580092664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:19,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2024-11-09 02:45:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739568481] [2024-11-09 02:45:19,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:19,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 02:45:19,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 02:45:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:45:19,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:19,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 178 transitions, 2190 flow. Second operand has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:19,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:19,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:19,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:20,894 INFO L124 PetriNetUnfolderBase]: 932/1706 cut-off events. [2024-11-09 02:45:20,894 INFO L125 PetriNetUnfolderBase]: For 9123/9125 co-relation queries the response was YES. [2024-11-09 02:45:20,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9272 conditions, 1706 events. 932/1706 cut-off events. For 9123/9125 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9182 event pairs, 142 based on Foata normal form. 3/1705 useless extension candidates. Maximal degree in co-relation 9201. Up to 1259 conditions per place. [2024-11-09 02:45:20,912 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 161 selfloop transitions, 82 changer transitions 1/252 dead transitions. [2024-11-09 02:45:20,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 252 transitions, 3178 flow [2024-11-09 02:45:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 02:45:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 02:45:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 210 transitions. [2024-11-09 02:45:20,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-11-09 02:45:20,914 INFO L175 Difference]: Start difference. First operand has 145 places, 178 transitions, 2190 flow. Second operand 24 states and 210 transitions. [2024-11-09 02:45:20,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 252 transitions, 3178 flow [2024-11-09 02:45:20,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 252 transitions, 3090 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-11-09 02:45:20,945 INFO L231 Difference]: Finished difference. Result has 164 places, 205 transitions, 2681 flow [2024-11-09 02:45:20,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2681, PETRI_PLACES=164, PETRI_TRANSITIONS=205} [2024-11-09 02:45:20,946 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 139 predicate places. [2024-11-09 02:45:20,946 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 205 transitions, 2681 flow [2024-11-09 02:45:20,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:20,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:20,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:20,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 02:45:21,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 02:45:21,148 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:21,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1592248651, now seen corresponding path program 14 times [2024-11-09 02:45:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887092833] [2024-11-09 02:45:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:21,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887092833] [2024-11-09 02:45:21,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887092833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:21,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193350513] [2024-11-09 02:45:21,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:45:21,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:21,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:21,726 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:21,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:45:21,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:21,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:21,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 02:45:21,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:21,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:22,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:22,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193350513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:22,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:22,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 29 [2024-11-09 02:45:22,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771695035] [2024-11-09 02:45:22,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:22,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 02:45:22,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:22,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 02:45:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-09 02:45:22,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:45:22,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 205 transitions, 2681 flow. Second operand has 30 states, 30 states have (on average 5.8) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:22,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:22,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:45:22,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:23,743 INFO L124 PetriNetUnfolderBase]: 1136/2107 cut-off events. [2024-11-09 02:45:23,744 INFO L125 PetriNetUnfolderBase]: For 14527/14535 co-relation queries the response was YES. [2024-11-09 02:45:23,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12223 conditions, 2107 events. 1136/2107 cut-off events. For 14527/14535 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12387 event pairs, 128 based on Foata normal form. 5/2106 useless extension candidates. Maximal degree in co-relation 12143. Up to 1133 conditions per place. [2024-11-09 02:45:23,763 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 146 selfloop transitions, 180 changer transitions 1/334 dead transitions. [2024-11-09 02:45:23,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 334 transitions, 4559 flow [2024-11-09 02:45:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 02:45:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 02:45:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 219 transitions. [2024-11-09 02:45:23,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3967391304347826 [2024-11-09 02:45:23,765 INFO L175 Difference]: Start difference. First operand has 164 places, 205 transitions, 2681 flow. Second operand 23 states and 219 transitions. [2024-11-09 02:45:23,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 334 transitions, 4559 flow [2024-11-09 02:45:23,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 334 transitions, 4471 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-09 02:45:23,803 INFO L231 Difference]: Finished difference. Result has 186 places, 276 transitions, 4165 flow [2024-11-09 02:45:23,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4165, PETRI_PLACES=186, PETRI_TRANSITIONS=276} [2024-11-09 02:45:23,804 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 161 predicate places. [2024-11-09 02:45:23,804 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 276 transitions, 4165 flow [2024-11-09 02:45:23,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.8) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:23,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:23,804 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:23,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 02:45:24,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:24,006 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:24,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1374021225, now seen corresponding path program 15 times [2024-11-09 02:45:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:24,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077264934] [2024-11-09 02:45:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:24,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:24,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077264934] [2024-11-09 02:45:24,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077264934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:24,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439929546] [2024-11-09 02:45:24,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:45:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:24,661 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:24,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:45:24,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:45:24,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:24,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 02:45:24,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:24,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:45:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 02:45:25,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:25,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-09 02:45:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:25,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:27,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2024-11-09 02:45:28,034 INFO L349 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2024-11-09 02:45:28,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 410 treesize of output 284 [2024-11-09 02:45:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:28,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439929546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:28,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:28,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2024-11-09 02:45:28,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899325264] [2024-11-09 02:45:28,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:28,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 02:45:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 02:45:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 02:45:28,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:28,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 276 transitions, 4165 flow. Second operand has 40 states, 40 states have (on average 4.725) internal successors, (189), 40 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:28,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:28,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:28,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:31,287 INFO L124 PetriNetUnfolderBase]: 2090/3521 cut-off events. [2024-11-09 02:45:31,288 INFO L125 PetriNetUnfolderBase]: For 32575/32575 co-relation queries the response was YES. [2024-11-09 02:45:31,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22694 conditions, 3521 events. 2090/3521 cut-off events. For 32575/32575 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 19890 event pairs, 79 based on Foata normal form. 1/3522 useless extension candidates. Maximal degree in co-relation 22605. Up to 1391 conditions per place. [2024-11-09 02:45:31,336 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 218 selfloop transitions, 352 changer transitions 4/575 dead transitions. [2024-11-09 02:45:31,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 575 transitions, 8477 flow [2024-11-09 02:45:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 02:45:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-09 02:45:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 423 transitions. [2024-11-09 02:45:31,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3596938775510204 [2024-11-09 02:45:31,340 INFO L175 Difference]: Start difference. First operand has 186 places, 276 transitions, 4165 flow. Second operand 49 states and 423 transitions. [2024-11-09 02:45:31,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 575 transitions, 8477 flow [2024-11-09 02:45:31,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 575 transitions, 8182 flow, removed 85 selfloop flow, removed 14 redundant places. [2024-11-09 02:45:31,529 INFO L231 Difference]: Finished difference. Result has 234 places, 439 transitions, 7432 flow [2024-11-09 02:45:31,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7432, PETRI_PLACES=234, PETRI_TRANSITIONS=439} [2024-11-09 02:45:31,531 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 209 predicate places. [2024-11-09 02:45:31,531 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 439 transitions, 7432 flow [2024-11-09 02:45:31,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 40 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:31,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:31,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:31,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 02:45:31,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:31,735 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:31,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:31,735 INFO L85 PathProgramCache]: Analyzing trace with hash 490457543, now seen corresponding path program 16 times [2024-11-09 02:45:31,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:31,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781882478] [2024-11-09 02:45:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:32,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781882478] [2024-11-09 02:45:32,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781882478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:32,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855461079] [2024-11-09 02:45:32,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:45:32,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:32,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:32,457 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:32,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:45:32,530 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:45:32,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:32,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:45:32,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:32,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:32,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:32,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855461079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:32,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:32,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2024-11-09 02:45:32,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742232283] [2024-11-09 02:45:32,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:32,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 02:45:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 02:45:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:45:32,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:32,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 439 transitions, 7432 flow. Second operand has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:32,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:32,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:32,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:35,074 INFO L124 PetriNetUnfolderBase]: 2518/4229 cut-off events. [2024-11-09 02:45:35,074 INFO L125 PetriNetUnfolderBase]: For 54242/54242 co-relation queries the response was YES. [2024-11-09 02:45:35,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32375 conditions, 4229 events. 2518/4229 cut-off events. For 54242/54242 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24787 event pairs, 173 based on Foata normal form. 1/4230 useless extension candidates. Maximal degree in co-relation 32273. Up to 2623 conditions per place. [2024-11-09 02:45:35,120 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 377 selfloop transitions, 299 changer transitions 1/678 dead transitions. [2024-11-09 02:45:35,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 678 transitions, 12129 flow [2024-11-09 02:45:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 02:45:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-09 02:45:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 275 transitions. [2024-11-09 02:45:35,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3580729166666667 [2024-11-09 02:45:35,122 INFO L175 Difference]: Start difference. First operand has 234 places, 439 transitions, 7432 flow. Second operand 32 states and 275 transitions. [2024-11-09 02:45:35,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 678 transitions, 12129 flow [2024-11-09 02:45:35,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 678 transitions, 11000 flow, removed 440 selfloop flow, removed 22 redundant places. [2024-11-09 02:45:35,373 INFO L231 Difference]: Finished difference. Result has 253 places, 557 transitions, 9591 flow [2024-11-09 02:45:35,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6614, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9591, PETRI_PLACES=253, PETRI_TRANSITIONS=557} [2024-11-09 02:45:35,374 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 228 predicate places. [2024-11-09 02:45:35,374 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 557 transitions, 9591 flow [2024-11-09 02:45:35,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:35,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:35,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:35,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 02:45:35,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:35,579 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:35,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash -686518265, now seen corresponding path program 17 times [2024-11-09 02:45:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:35,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879816582] [2024-11-09 02:45:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:36,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:36,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879816582] [2024-11-09 02:45:36,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879816582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:36,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443247243] [2024-11-09 02:45:36,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:45:36,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:36,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:36,200 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:36,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 02:45:36,266 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:45:36,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:36,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 02:45:36,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:36,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 02:45:36,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 02:45:36,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:36,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 33 [2024-11-09 02:45:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:36,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:37,023 INFO L349 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2024-11-09 02:45:37,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 33 [2024-11-09 02:45:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:37,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443247243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:37,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:37,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 36 [2024-11-09 02:45:37,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350217597] [2024-11-09 02:45:37,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:37,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 02:45:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 02:45:37,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 02:45:37,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:37,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 557 transitions, 9591 flow. Second operand has 37 states, 37 states have (on average 4.837837837837838) internal successors, (179), 37 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:37,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:37,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:37,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:43,424 INFO L124 PetriNetUnfolderBase]: 3622/5999 cut-off events. [2024-11-09 02:45:43,425 INFO L125 PetriNetUnfolderBase]: For 77616/77616 co-relation queries the response was YES. [2024-11-09 02:45:43,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47582 conditions, 5999 events. 3622/5999 cut-off events. For 77616/77616 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 36628 event pairs, 127 based on Foata normal form. 1/6000 useless extension candidates. Maximal degree in co-relation 47472. Up to 2491 conditions per place. [2024-11-09 02:45:43,487 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 490 selfloop transitions, 639 changer transitions 6/1136 dead transitions. [2024-11-09 02:45:43,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1136 transitions, 20342 flow [2024-11-09 02:45:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-09 02:45:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-09 02:45:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 559 transitions. [2024-11-09 02:45:43,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32349537037037035 [2024-11-09 02:45:43,494 INFO L175 Difference]: Start difference. First operand has 253 places, 557 transitions, 9591 flow. Second operand 72 states and 559 transitions. [2024-11-09 02:45:43,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 1136 transitions, 20342 flow [2024-11-09 02:45:43,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1136 transitions, 19780 flow, removed 253 selfloop flow, removed 12 redundant places. [2024-11-09 02:45:44,012 INFO L231 Difference]: Finished difference. Result has 344 places, 904 transitions, 17386 flow [2024-11-09 02:45:44,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9161, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=17386, PETRI_PLACES=344, PETRI_TRANSITIONS=904} [2024-11-09 02:45:44,013 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 319 predicate places. [2024-11-09 02:45:44,013 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 904 transitions, 17386 flow [2024-11-09 02:45:44,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.837837837837838) internal successors, (179), 37 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:44,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:44,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:44,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 02:45:44,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:44,217 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:44,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1069170759, now seen corresponding path program 18 times [2024-11-09 02:45:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093346119] [2024-11-09 02:45:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:45,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:45,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093346119] [2024-11-09 02:45:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093346119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984438885] [2024-11-09 02:45:45,029 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:45:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:45,033 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:45,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 02:45:45,104 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:45:45,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:45,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 02:45:45,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:45,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:45,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:45,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984438885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:45,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 9] total 32 [2024-11-09 02:45:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857921888] [2024-11-09 02:45:45,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:45,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 02:45:45,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 02:45:45,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 02:45:45,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:45,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 904 transitions, 17386 flow. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:45,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:45,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:45,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:48,756 INFO L124 PetriNetUnfolderBase]: 3746/6215 cut-off events. [2024-11-09 02:45:48,756 INFO L125 PetriNetUnfolderBase]: For 121965/121965 co-relation queries the response was YES. [2024-11-09 02:45:48,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56998 conditions, 6215 events. 3746/6215 cut-off events. For 121965/121965 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 38343 event pairs, 217 based on Foata normal form. 2/6217 useless extension candidates. Maximal degree in co-relation 56856. Up to 4364 conditions per place. [2024-11-09 02:45:48,865 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 642 selfloop transitions, 401 changer transitions 2/1046 dead transitions. [2024-11-09 02:45:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1046 transitions, 21756 flow [2024-11-09 02:45:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:45:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:45:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 178 transitions. [2024-11-09 02:45:48,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39035087719298245 [2024-11-09 02:45:48,867 INFO L175 Difference]: Start difference. First operand has 344 places, 904 transitions, 17386 flow. Second operand 19 states and 178 transitions. [2024-11-09 02:45:48,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1046 transitions, 21756 flow [2024-11-09 02:45:50,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 1046 transitions, 20276 flow, removed 675 selfloop flow, removed 18 redundant places. [2024-11-09 02:45:50,297 INFO L231 Difference]: Finished difference. Result has 347 places, 941 transitions, 18423 flow [2024-11-09 02:45:50,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16089, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18423, PETRI_PLACES=347, PETRI_TRANSITIONS=941} [2024-11-09 02:45:50,301 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 322 predicate places. [2024-11-09 02:45:50,301 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 941 transitions, 18423 flow [2024-11-09 02:45:50,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:50,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:50,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:50,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 02:45:50,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 02:45:50,502 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:50,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1954969039, now seen corresponding path program 19 times [2024-11-09 02:45:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:50,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385432106] [2024-11-09 02:45:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:51,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385432106] [2024-11-09 02:45:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385432106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:51,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263390186] [2024-11-09 02:45:51,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:45:51,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:51,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:51,399 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:51,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 02:45:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:51,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:45:51,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:51,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:51,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:51,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263390186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:51,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2024-11-09 02:45:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88217563] [2024-11-09 02:45:51,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:51,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 02:45:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 02:45:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:45:51,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:51,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 941 transitions, 18423 flow. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:51,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:51,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:54,850 INFO L124 PetriNetUnfolderBase]: 3937/6525 cut-off events. [2024-11-09 02:45:54,851 INFO L125 PetriNetUnfolderBase]: For 134015/134015 co-relation queries the response was YES. [2024-11-09 02:45:54,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60299 conditions, 6525 events. 3937/6525 cut-off events. For 134015/134015 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40181 event pairs, 234 based on Foata normal form. 1/6526 useless extension candidates. Maximal degree in co-relation 60154. Up to 4508 conditions per place. [2024-11-09 02:45:55,018 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 671 selfloop transitions, 451 changer transitions 2/1125 dead transitions. [2024-11-09 02:45:55,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 1125 transitions, 23606 flow [2024-11-09 02:45:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 02:45:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-09 02:45:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 245 transitions. [2024-11-09 02:45:55,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-11-09 02:45:55,028 INFO L175 Difference]: Start difference. First operand has 347 places, 941 transitions, 18423 flow. Second operand 28 states and 245 transitions. [2024-11-09 02:45:55,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 1125 transitions, 23606 flow [2024-11-09 02:45:56,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1125 transitions, 23403 flow, removed 50 selfloop flow, removed 15 redundant places. [2024-11-09 02:45:56,343 INFO L231 Difference]: Finished difference. Result has 365 places, 995 transitions, 20935 flow [2024-11-09 02:45:56,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=18232, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=20935, PETRI_PLACES=365, PETRI_TRANSITIONS=995} [2024-11-09 02:45:56,345 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 340 predicate places. [2024-11-09 02:45:56,345 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 995 transitions, 20935 flow [2024-11-09 02:45:56,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:56,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:56,346 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:56,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:56,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 02:45:56,550 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:45:56,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1919521511, now seen corresponding path program 20 times [2024-11-09 02:45:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:56,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256112493] [2024-11-09 02:45:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:57,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256112493] [2024-11-09 02:45:57,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256112493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:57,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525776111] [2024-11-09 02:45:57,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:45:57,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:57,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:57,312 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:57,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 02:45:57,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:57,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:57,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:45:57,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:57,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:57,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:57,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-09 02:45:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525776111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:57,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:57,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2024-11-09 02:45:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115314677] [2024-11-09 02:45:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:57,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 02:45:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 02:45:57,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:45:57,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:45:57,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 995 transitions, 20935 flow. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 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) [2024-11-09 02:45:57,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:57,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:45:57,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:02,336 INFO L124 PetriNetUnfolderBase]: 4210/6977 cut-off events. [2024-11-09 02:46:02,336 INFO L125 PetriNetUnfolderBase]: For 159936/159936 co-relation queries the response was YES. [2024-11-09 02:46:02,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67158 conditions, 6977 events. 4210/6977 cut-off events. For 159936/159936 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 43570 event pairs, 197 based on Foata normal form. 1/6978 useless extension candidates. Maximal degree in co-relation 67008. Up to 4545 conditions per place. [2024-11-09 02:46:02,434 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 709 selfloop transitions, 485 changer transitions 1/1196 dead transitions. [2024-11-09 02:46:02,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1196 transitions, 26813 flow [2024-11-09 02:46:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 02:46:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-09 02:46:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 258 transitions. [2024-11-09 02:46:02,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-11-09 02:46:02,440 INFO L175 Difference]: Start difference. First operand has 365 places, 995 transitions, 20935 flow. Second operand 30 states and 258 transitions. [2024-11-09 02:46:02,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1196 transitions, 26813 flow [2024-11-09 02:46:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1196 transitions, 26348 flow, removed 161 selfloop flow, removed 19 redundant places. [2024-11-09 02:46:03,479 INFO L231 Difference]: Finished difference. Result has 387 places, 1064 transitions, 23956 flow [2024-11-09 02:46:03,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20477, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23956, PETRI_PLACES=387, PETRI_TRANSITIONS=1064} [2024-11-09 02:46:03,480 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 362 predicate places. [2024-11-09 02:46:03,480 INFO L471 AbstractCegarLoop]: Abstraction has has 387 places, 1064 transitions, 23956 flow [2024-11-09 02:46:03,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 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) [2024-11-09 02:46:03,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:03,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:03,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 02:46:03,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:03,681 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:46:03,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1312588945, now seen corresponding path program 21 times [2024-11-09 02:46:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903513399] [2024-11-09 02:46:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:04,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903513399] [2024-11-09 02:46:04,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903513399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:46:04,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672966961] [2024-11-09 02:46:04,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:46:04,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:04,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:46:04,306 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:46:04,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 02:46:04,379 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 02:46:04,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:46:04,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 02:46:04,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:46:04,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:46:04,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:46:04,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2024-11-09 02:46:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:04,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:46:05,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 02:46:05,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:46:05,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2024-11-09 02:46:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:05,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672966961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:46:05,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:46:05,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2024-11-09 02:46:05,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563022202] [2024-11-09 02:46:05,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:46:05,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 02:46:05,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 02:46:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 02:46:05,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:46:05,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1064 transitions, 23956 flow. Second operand has 40 states, 40 states have (on average 4.75) internal successors, (190), 40 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:05,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:05,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:46:05,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:10,726 INFO L124 PetriNetUnfolderBase]: 4502/7481 cut-off events. [2024-11-09 02:46:10,727 INFO L125 PetriNetUnfolderBase]: For 185655/185655 co-relation queries the response was YES. [2024-11-09 02:46:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75602 conditions, 7481 events. 4502/7481 cut-off events. For 185655/185655 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 47614 event pairs, 145 based on Foata normal form. 1/7482 useless extension candidates. Maximal degree in co-relation 75440. Up to 3746 conditions per place. [2024-11-09 02:46:10,835 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 546 selfloop transitions, 881 changer transitions 6/1434 dead transitions. [2024-11-09 02:46:10,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1434 transitions, 33016 flow [2024-11-09 02:46:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-09 02:46:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-09 02:46:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 469 transitions. [2024-11-09 02:46:10,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3312146892655367 [2024-11-09 02:46:10,837 INFO L175 Difference]: Start difference. First operand has 387 places, 1064 transitions, 23956 flow. Second operand 59 states and 469 transitions. [2024-11-09 02:46:10,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1434 transitions, 33016 flow [2024-11-09 02:46:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1434 transitions, 32621 flow, removed 154 selfloop flow, removed 16 redundant places. [2024-11-09 02:46:12,219 INFO L231 Difference]: Finished difference. Result has 446 places, 1239 transitions, 30796 flow [2024-11-09 02:46:12,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=23579, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=719, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=30796, PETRI_PLACES=446, PETRI_TRANSITIONS=1239} [2024-11-09 02:46:12,221 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 421 predicate places. [2024-11-09 02:46:12,221 INFO L471 AbstractCegarLoop]: Abstraction has has 446 places, 1239 transitions, 30796 flow [2024-11-09 02:46:12,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.75) internal successors, (190), 40 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:12,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:12,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:12,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 02:46:12,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:12,427 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:46:12,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1381225065, now seen corresponding path program 22 times [2024-11-09 02:46:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:12,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729114906] [2024-11-09 02:46:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:12,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:13,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:13,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729114906] [2024-11-09 02:46:13,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729114906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:46:13,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046743581] [2024-11-09 02:46:13,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:46:13,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:13,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:46:13,314 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:46:13,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 02:46:13,397 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:46:13,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:46:13,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:46:13,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:46:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:46:13,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:46:13,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:46:13,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 45 [2024-11-09 02:46:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:46:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046743581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:46:13,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:46:13,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2024-11-09 02:46:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939342625] [2024-11-09 02:46:13,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:46:13,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 02:46:13,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 02:46:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:46:13,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-09 02:46:13,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1239 transitions, 30796 flow. Second operand has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:13,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:13,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-09 02:46:13,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:18,187 INFO L124 PetriNetUnfolderBase]: 4908/8156 cut-off events. [2024-11-09 02:46:18,187 INFO L125 PetriNetUnfolderBase]: For 249107/249107 co-relation queries the response was YES. [2024-11-09 02:46:18,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90447 conditions, 8156 events. 4908/8156 cut-off events. For 249107/249107 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 52827 event pairs, 236 based on Foata normal form. 1/8157 useless extension candidates. Maximal degree in co-relation 90267. Up to 5502 conditions per place. [2024-11-09 02:46:18,447 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 905 selfloop transitions, 592 changer transitions 1/1499 dead transitions. [2024-11-09 02:46:18,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1499 transitions, 39474 flow [2024-11-09 02:46:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 02:46:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 02:46:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 251 transitions. [2024-11-09 02:46:18,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36063218390804597 [2024-11-09 02:46:18,449 INFO L175 Difference]: Start difference. First operand has 446 places, 1239 transitions, 30796 flow. Second operand 29 states and 251 transitions. [2024-11-09 02:46:18,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1499 transitions, 39474 flow [2024-11-09 02:46:21,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1499 transitions, 38722 flow, removed 295 selfloop flow, removed 25 redundant places. [2024-11-09 02:46:21,280 INFO L231 Difference]: Finished difference. Result has 460 places, 1361 transitions, 35823 flow [2024-11-09 02:46:21,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=30083, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=35823, PETRI_PLACES=460, PETRI_TRANSITIONS=1361} [2024-11-09 02:46:21,282 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 435 predicate places. [2024-11-09 02:46:21,282 INFO L471 AbstractCegarLoop]: Abstraction has has 460 places, 1361 transitions, 35823 flow [2024-11-09 02:46:21,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0) internal successors, (145), 29 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:21,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:21,283 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:21,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 02:46:21,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 02:46:21,484 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:46:21,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1743946145, now seen corresponding path program 23 times [2024-11-09 02:46:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219811788] [2024-11-09 02:46:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:46:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:46:22,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:46:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219811788] [2024-11-09 02:46:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219811788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:46:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489698192] [2024-11-09 02:46:22,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:46:22,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:46:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:46:22,089 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:46:22,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 02:46:22,172 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:46:22,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:46:22,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 02:46:22,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:46:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:46:22,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:46:22,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:46:22,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 45 [2024-11-09 02:46:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:46:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489698192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:46:22,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:46:22,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 29 [2024-11-09 02:46:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177355920] [2024-11-09 02:46:22,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:46:22,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 02:46:22,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 02:46:22,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-09 02:46:22,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-09 02:46:22,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1361 transitions, 35823 flow. Second operand has 30 states, 30 states have (on average 5.9) internal successors, (177), 30 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:22,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:22,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-09 02:46:22,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:46:27,472 INFO L124 PetriNetUnfolderBase]: 4624/7911 cut-off events. [2024-11-09 02:46:27,472 INFO L125 PetriNetUnfolderBase]: For 287191/287531 co-relation queries the response was YES. [2024-11-09 02:46:27,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94709 conditions, 7911 events. 4624/7911 cut-off events. For 287191/287531 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 53682 event pairs, 295 based on Foata normal form. 171/8062 useless extension candidates. Maximal degree in co-relation 94518. Up to 6696 conditions per place. [2024-11-09 02:46:27,679 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 1219 selfloop transitions, 127 changer transitions 1/1474 dead transitions. [2024-11-09 02:46:27,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1474 transitions, 41132 flow [2024-11-09 02:46:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 02:46:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 02:46:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 241 transitions. [2024-11-09 02:46:27,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37191358024691357 [2024-11-09 02:46:27,681 INFO L175 Difference]: Start difference. First operand has 460 places, 1361 transitions, 35823 flow. Second operand 27 states and 241 transitions. [2024-11-09 02:46:27,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1474 transitions, 41132 flow [2024-11-09 02:46:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1474 transitions, 40571 flow, removed 232 selfloop flow, removed 16 redundant places. [2024-11-09 02:46:30,314 INFO L231 Difference]: Finished difference. Result has 477 places, 1413 transitions, 37403 flow [2024-11-09 02:46:30,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=35266, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=37403, PETRI_PLACES=477, PETRI_TRANSITIONS=1413} [2024-11-09 02:46:30,320 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 452 predicate places. [2024-11-09 02:46:30,320 INFO L471 AbstractCegarLoop]: Abstraction has has 477 places, 1413 transitions, 37403 flow [2024-11-09 02:46:30,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.9) internal successors, (177), 30 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:30,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:46:30,320 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:46:30,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 02:46:30,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 02:46:30,522 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:46:30,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:46:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1515086685, now seen corresponding path program 24 times [2024-11-09 02:46:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:46:30,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694393791] [2024-11-09 02:46:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:46:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:46:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat