./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive-alt.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-send-receive-alt.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 d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:49:44,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:49:44,561 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:49:44,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:49:44,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:49:44,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:49:44,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:49:44,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:49:44,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:49:44,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:49:44,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:49:44,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:49:44,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:49:44,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:49:44,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:49:44,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:49:44,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:49:44,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:49:44,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:49:44,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:49:44,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:49:44,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:49:44,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:49:44,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:49:44,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:49:44,600 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:49:44,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:49:44,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:49:44,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:49:44,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:49:44,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:49:44,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:49:44,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:49:44,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:49:44,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:49:44,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:49:44,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:49:44,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:49:44,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:49:44,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:49:44,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:49:44,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:49:44,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 [2024-11-09 02:49:44,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:49:44,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:49:44,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:49:44,867 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:49:44,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:49:44,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-09 02:49:46,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:49:46,251 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:49:46,251 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-09 02:49:46,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1427656ea/5a5f2e108f98457484fcb45fbfe0d1e1/FLAG3fec6a0a9 [2024-11-09 02:49:46,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1427656ea/5a5f2e108f98457484fcb45fbfe0d1e1 [2024-11-09 02:49:46,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:49:46,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:49:46,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:49:46,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:49:46,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:49:46,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:46,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c062447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46, skipping insertion in model container [2024-11-09 02:49:46,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:46,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:49:46,892 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-send-receive-alt.wvr.c[2676,2689] [2024-11-09 02:49:46,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:49:46,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:49:46,925 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-send-receive-alt.wvr.c[2676,2689] [2024-11-09 02:49:46,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:49:46,941 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:49:46,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46 WrapperNode [2024-11-09 02:49:46,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:49:46,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:49:46,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:49:46,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:49:46,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:46,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:46,970 INFO L138 Inliner]: procedures = 23, calls = 27, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 139 [2024-11-09 02:49:46,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:49:46,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:49:46,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:49:46,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:49:46,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:46,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:46,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,011 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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 02:49:47,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:49:47,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:49:47,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:49:47,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:49:47,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (1/1) ... [2024-11-09 02:49:47,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:49:47,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:47,060 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 02:49:47,062 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 02:49:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:49:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:49:47,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:49:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:49:47,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:49:47,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:49:47,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:49:47,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:49:47,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:49:47,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:49:47,103 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 02:49:47,210 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:49:47,212 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:49:47,434 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:49:47,434 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:49:47,584 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:49:47,584 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 02:49:47,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:49:47 BoogieIcfgContainer [2024-11-09 02:49:47,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:49:47,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:49:47,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:49:47,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:49:47,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:49:46" (1/3) ... [2024-11-09 02:49:47,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba34d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:49:47, skipping insertion in model container [2024-11-09 02:49:47,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:49:46" (2/3) ... [2024-11-09 02:49:47,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba34d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:49:47, skipping insertion in model container [2024-11-09 02:49:47,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:49:47" (3/3) ... [2024-11-09 02:49:47,593 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2024-11-09 02:49:47,604 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:49:47,605 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:49:47,605 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:49:47,645 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:49:47,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 32 transitions, 78 flow [2024-11-09 02:49:47,707 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-09 02:49:47,709 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:49:47,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 6/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-09 02:49:47,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 32 transitions, 78 flow [2024-11-09 02:49:47,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions, 70 flow [2024-11-09 02:49:47,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:49:47,731 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;@62482318, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:49:47,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:49:47,741 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:49:47,744 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-09 02:49:47,745 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:49:47,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:47,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:47,746 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 02:49:47,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:47,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1889599126, now seen corresponding path program 1 times [2024-11-09 02:49:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:47,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916317482] [2024-11-09 02:49:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:47,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:47,887 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 02:49:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916317482] [2024-11-09 02:49:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916317482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:49:47,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:49:47,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:49:47,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058970311] [2024-11-09 02:49:47,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:49:47,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:49:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:49:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:49:47,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:47,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 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 02:49:47,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:47,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:47,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:47,988 INFO L124 PetriNetUnfolderBase]: 158/290 cut-off events. [2024-11-09 02:49:47,989 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 02:49:47,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 290 events. 158/290 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1053 event pairs, 116 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 513. Up to 253 conditions per place. [2024-11-09 02:49:47,996 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 22 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2024-11-09 02:49:47,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 110 flow [2024-11-09 02:49:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:49:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:49:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2024-11-09 02:49:48,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-09 02:49:48,010 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 70 flow. Second operand 2 states and 38 transitions. [2024-11-09 02:49:48,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 110 flow [2024-11-09 02:49:48,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:49:48,014 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 58 flow [2024-11-09 02:49:48,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2024-11-09 02:49:48,018 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2024-11-09 02:49:48,018 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 58 flow [2024-11-09 02:49:48,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 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 02:49:48,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:48,019 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 02:49:48,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:49:48,019 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 02:49:48,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1159708757, now seen corresponding path program 1 times [2024-11-09 02:49:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031000507] [2024-11-09 02:49:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:48,178 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 02:49:48,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:48,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031000507] [2024-11-09 02:49:48,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031000507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:49:48,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:49:48,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:49:48,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30872453] [2024-11-09 02:49:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:49:48,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:49:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:48,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:49:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:49:48,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:48,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 02:49:48,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:48,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:48,315 INFO L124 PetriNetUnfolderBase]: 256/457 cut-off events. [2024-11-09 02:49:48,316 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-09 02:49:48,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 457 events. 256/457 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1837 event pairs, 96 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 893. Up to 228 conditions per place. [2024-11-09 02:49:48,320 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 34 selfloop transitions, 2 changer transitions 3/44 dead transitions. [2024-11-09 02:49:48,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 44 transitions, 173 flow [2024-11-09 02:49:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:49:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:49:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-09 02:49:48,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-11-09 02:49:48,324 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 58 flow. Second operand 3 states and 61 transitions. [2024-11-09 02:49:48,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 44 transitions, 173 flow [2024-11-09 02:49:48,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:49:48,327 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 70 flow [2024-11-09 02:49:48,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2024-11-09 02:49:48,328 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2024-11-09 02:49:48,328 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 70 flow [2024-11-09 02:49:48,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 02:49:48,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:48,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:48,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:49:48,329 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 02:49:48,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:48,332 INFO L85 PathProgramCache]: Analyzing trace with hash -930542238, now seen corresponding path program 1 times [2024-11-09 02:49:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:48,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273475433] [2024-11-09 02:49:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:48,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273475433] [2024-11-09 02:49:48,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273475433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:49:48,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:49:48,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:49:48,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902420005] [2024-11-09 02:49:48,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:49:48,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:49:48,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:48,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:49:48,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:49:48,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:48,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:48,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:48,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:48,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:48,523 INFO L124 PetriNetUnfolderBase]: 287/534 cut-off events. [2024-11-09 02:49:48,523 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 02:49:48,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 534 events. 287/534 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2139 event pairs, 126 based on Foata normal form. 14/459 useless extension candidates. Maximal degree in co-relation 1051. Up to 318 conditions per place. [2024-11-09 02:49:48,528 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 6/41 dead transitions. [2024-11-09 02:49:48,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 170 flow [2024-11-09 02:49:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:49:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:49:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-09 02:49:48,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-09 02:49:48,530 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 70 flow. Second operand 3 states and 57 transitions. [2024-11-09 02:49:48,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 170 flow [2024-11-09 02:49:48,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:49:48,531 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 87 flow [2024-11-09 02:49:48,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-09 02:49:48,531 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2024-11-09 02:49:48,532 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 87 flow [2024-11-09 02:49:48,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:48,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:48,532 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:48,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:49:48,534 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 02:49:48,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -487430840, now seen corresponding path program 1 times [2024-11-09 02:49:48,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:48,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414175937] [2024-11-09 02:49:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:48,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414175937] [2024-11-09 02:49:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414175937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:49:48,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:49:48,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:49:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882078928] [2024-11-09 02:49:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:49:48,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:49:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:49:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:49:48,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:48,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:48,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:48,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:48,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:48,826 INFO L124 PetriNetUnfolderBase]: 355/668 cut-off events. [2024-11-09 02:49:48,826 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-09 02:49:48,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 668 events. 355/668 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2928 event pairs, 289 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 1416. Up to 480 conditions per place. [2024-11-09 02:49:48,829 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 24 selfloop transitions, 2 changer transitions 15/46 dead transitions. [2024-11-09 02:49:48,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 205 flow [2024-11-09 02:49:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:49:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:49:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-11-09 02:49:48,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-11-09 02:49:48,831 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 87 flow. Second operand 4 states and 67 transitions. [2024-11-09 02:49:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 46 transitions, 205 flow [2024-11-09 02:49:48,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:49:48,834 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 98 flow [2024-11-09 02:49:48,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-09 02:49:48,835 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-09 02:49:48,836 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 98 flow [2024-11-09 02:49:48,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:48,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:48,837 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:48,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:49:48,837 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 02:49:48,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash 909190841, now seen corresponding path program 1 times [2024-11-09 02:49:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901072358] [2024-11-09 02:49:48,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:48,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:49,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901072358] [2024-11-09 02:49:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901072358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:49,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696006930] [2024-11-09 02:49:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:49,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:49,518 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 02:49:49,519 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 02:49:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:49,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 02:49:49,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:49,677 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 23 treesize of output 1 [2024-11-09 02:49:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:49,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:50,400 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 61 treesize of output 55 [2024-11-09 02:49:50,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:50,413 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 78 treesize of output 68 [2024-11-09 02:49:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:50,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696006930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:50,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:50,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-09 02:49:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169870323] [2024-11-09 02:49:50,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:50,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:50,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:50,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:50,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 98 flow. Second operand has 19 states, 19 states have (on average 10.31578947368421) internal successors, (196), 19 states have internal predecessors, (196), 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 02:49:50,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:50,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:50,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:51,491 INFO L124 PetriNetUnfolderBase]: 1195/2237 cut-off events. [2024-11-09 02:49:51,491 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-11-09 02:49:51,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 2237 events. 1195/2237 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12321 event pairs, 330 based on Foata normal form. 19/2012 useless extension candidates. Maximal degree in co-relation 4786. Up to 500 conditions per place. [2024-11-09 02:49:51,502 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 116 selfloop transitions, 28 changer transitions 30/179 dead transitions. [2024-11-09 02:49:51,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 179 transitions, 852 flow [2024-11-09 02:49:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:49:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:49:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2024-11-09 02:49:51,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854166666666667 [2024-11-09 02:49:51,506 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 98 flow. Second operand 15 states and 281 transitions. [2024-11-09 02:49:51,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 179 transitions, 852 flow [2024-11-09 02:49:51,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 179 transitions, 828 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-09 02:49:51,513 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 353 flow [2024-11-09 02:49:51,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=353, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2024-11-09 02:49:51,514 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-11-09 02:49:51,514 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 353 flow [2024-11-09 02:49:51,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.31578947368421) internal successors, (196), 19 states have internal predecessors, (196), 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 02:49:51,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:51,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:51,529 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 02:49:51,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:51,719 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 02:49:51,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash 110229209, now seen corresponding path program 1 times [2024-11-09 02:49:51,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140228674] [2024-11-09 02:49:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140228674] [2024-11-09 02:49:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140228674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:49:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:49:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:49:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264368797] [2024-11-09 02:49:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:49:51,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:49:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:49:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:49:51,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-11-09 02:49:51,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:51,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:51,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-11-09 02:49:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:51,966 INFO L124 PetriNetUnfolderBase]: 1252/2195 cut-off events. [2024-11-09 02:49:51,966 INFO L125 PetriNetUnfolderBase]: For 1271/1271 co-relation queries the response was YES. [2024-11-09 02:49:51,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 2195 events. 1252/2195 cut-off events. For 1271/1271 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11149 event pairs, 765 based on Foata normal form. 22/2064 useless extension candidates. Maximal degree in co-relation 5340. Up to 1734 conditions per place. [2024-11-09 02:49:51,977 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 62 selfloop transitions, 2 changer transitions 3/70 dead transitions. [2024-11-09 02:49:51,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 486 flow [2024-11-09 02:49:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:49:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:49:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-09 02:49:51,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-09 02:49:51,984 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 353 flow. Second operand 3 states and 54 transitions. [2024-11-09 02:49:51,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 486 flow [2024-11-09 02:49:51,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 442 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-11-09 02:49:51,994 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 250 flow [2024-11-09 02:49:51,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-09 02:49:51,996 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-11-09 02:49:51,996 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 250 flow [2024-11-09 02:49:51,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:51,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:51,997 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, 1, 1, 1, 1] [2024-11-09 02:49:51,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:49:51,997 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 02:49:51,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:51,999 INFO L85 PathProgramCache]: Analyzing trace with hash -507859114, now seen corresponding path program 2 times [2024-11-09 02:49:51,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:51,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706151981] [2024-11-09 02:49:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:51,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706151981] [2024-11-09 02:49:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706151981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928139595] [2024-11-09 02:49:52,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:52,567 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 02:49:52,568 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 02:49:52,623 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:52,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:52,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:49:52,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:52,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:52,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:52,755 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 40 treesize of output 24 [2024-11-09 02:49:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928139595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:52,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:52,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 13 [2024-11-09 02:49:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960612154] [2024-11-09 02:49:52,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:52,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:49:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:49:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:49:52,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:52,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 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 02:49:52,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:52,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:52,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:53,129 INFO L124 PetriNetUnfolderBase]: 1143/2115 cut-off events. [2024-11-09 02:49:53,130 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2024-11-09 02:49:53,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 2115 events. 1143/2115 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11300 event pairs, 309 based on Foata normal form. 1/1968 useless extension candidates. Maximal degree in co-relation 5119. Up to 673 conditions per place. [2024-11-09 02:49:53,137 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 73 selfloop transitions, 14 changer transitions 16/109 dead transitions. [2024-11-09 02:49:53,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 625 flow [2024-11-09 02:49:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-11-09 02:49:53,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-11-09 02:49:53,139 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 250 flow. Second operand 9 states and 147 transitions. [2024-11-09 02:49:53,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 625 flow [2024-11-09 02:49:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:49:53,145 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 316 flow [2024-11-09 02:49:53,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-09 02:49:53,146 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-11-09 02:49:53,146 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 316 flow [2024-11-09 02:49:53,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.357142857142858) internal successors, (159), 14 states have internal predecessors, (159), 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 02:49:53,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:53,147 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:53,159 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 02:49:53,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 02:49:53,348 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 02:49:53,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1977149039, now seen corresponding path program 3 times [2024-11-09 02:49:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:53,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331066098] [2024-11-09 02:49:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:53,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331066098] [2024-11-09 02:49:53,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331066098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75961287] [2024-11-09 02:49:53,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:53,407 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 02:49:53,408 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 02:49:53,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 02:49:53,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:53,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:49:53,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:49:53,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75961287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:53,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:53,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-09 02:49:53,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909643992] [2024-11-09 02:49:53,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:53,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:49:53,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:53,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:49:53,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:49:53,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:53,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 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 02:49:53,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:53,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:53,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:53,804 INFO L124 PetriNetUnfolderBase]: 1943/3679 cut-off events. [2024-11-09 02:49:53,804 INFO L125 PetriNetUnfolderBase]: For 2560/2560 co-relation queries the response was YES. [2024-11-09 02:49:53,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8983 conditions, 3679 events. 1943/3679 cut-off events. For 2560/2560 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22067 event pairs, 752 based on Foata normal form. 40/3481 useless extension candidates. Maximal degree in co-relation 8964. Up to 1434 conditions per place. [2024-11-09 02:49:53,817 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 72 selfloop transitions, 23 changer transitions 0/101 dead transitions. [2024-11-09 02:49:53,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 716 flow [2024-11-09 02:49:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:49:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:49:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-09 02:49:53,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 02:49:53,818 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 316 flow. Second operand 4 states and 80 transitions. [2024-11-09 02:49:53,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 716 flow [2024-11-09 02:49:53,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 655 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:53,824 INFO L231 Difference]: Finished difference. Result has 62 places, 76 transitions, 506 flow [2024-11-09 02:49:53,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=506, PETRI_PLACES=62, PETRI_TRANSITIONS=76} [2024-11-09 02:49:53,825 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-11-09 02:49:53,825 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 76 transitions, 506 flow [2024-11-09 02:49:53,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 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 02:49:53,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:53,825 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:53,837 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 02:49:54,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:54,026 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 02:49:54,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1805096591, now seen corresponding path program 4 times [2024-11-09 02:49:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:54,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407510926] [2024-11-09 02:49:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407510926] [2024-11-09 02:49:54,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407510926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:49:54,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:49:54,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:49:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664797795] [2024-11-09 02:49:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:49:54,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:49:54,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:49:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:49:54,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-11-09 02:49:54,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 76 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:54,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:54,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-11-09 02:49:54,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:54,434 INFO L124 PetriNetUnfolderBase]: 2701/4703 cut-off events. [2024-11-09 02:49:54,434 INFO L125 PetriNetUnfolderBase]: For 4078/4078 co-relation queries the response was YES. [2024-11-09 02:49:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12381 conditions, 4703 events. 2701/4703 cut-off events. For 4078/4078 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 25585 event pairs, 542 based on Foata normal form. 242/4588 useless extension candidates. Maximal degree in co-relation 12362. Up to 2391 conditions per place. [2024-11-09 02:49:54,448 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 80 selfloop transitions, 4 changer transitions 4/90 dead transitions. [2024-11-09 02:49:54,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 752 flow [2024-11-09 02:49:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:49:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:49:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-09 02:49:54,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-11-09 02:49:54,449 INFO L175 Difference]: Start difference. First operand has 62 places, 76 transitions, 506 flow. Second operand 4 states and 63 transitions. [2024-11-09 02:49:54,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 752 flow [2024-11-09 02:49:54,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 742 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 02:49:54,454 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 406 flow [2024-11-09 02:49:54,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-09 02:49:54,454 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-11-09 02:49:54,455 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 406 flow [2024-11-09 02:49:54,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:54,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:54,455 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:54,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:49:54,455 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 02:49:54,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash -926560523, now seen corresponding path program 1 times [2024-11-09 02:49:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117452931] [2024-11-09 02:49:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117452931] [2024-11-09 02:49:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117452931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23934502] [2024-11-09 02:49:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:55,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:55,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:55,096 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 02:49:55,097 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 02:49:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:55,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 02:49:55,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:55,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:55,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:55,714 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 75 treesize of output 60 [2024-11-09 02:49:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:55,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23934502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:55,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:55,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2024-11-09 02:49:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497543872] [2024-11-09 02:49:55,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:55,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 02:49:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 02:49:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2024-11-09 02:49:55,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:49:55,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 406 flow. Second operand has 30 states, 30 states have (on average 9.7) internal successors, (291), 30 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:55,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:55,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:49:55,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:58,416 INFO L124 PetriNetUnfolderBase]: 4783/9190 cut-off events. [2024-11-09 02:49:58,416 INFO L125 PetriNetUnfolderBase]: For 11315/11323 co-relation queries the response was YES. [2024-11-09 02:49:58,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24927 conditions, 9190 events. 4783/9190 cut-off events. For 11315/11323 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 62064 event pairs, 881 based on Foata normal form. 67/8628 useless extension candidates. Maximal degree in co-relation 24906. Up to 1545 conditions per place. [2024-11-09 02:49:58,450 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 254 selfloop transitions, 98 changer transitions 125/484 dead transitions. [2024-11-09 02:49:58,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 484 transitions, 2933 flow [2024-11-09 02:49:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 02:49:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-09 02:49:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 748 transitions. [2024-11-09 02:49:58,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-11-09 02:49:58,453 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 406 flow. Second operand 42 states and 748 transitions. [2024-11-09 02:49:58,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 484 transitions, 2933 flow [2024-11-09 02:49:58,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 484 transitions, 2927 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:49:58,465 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1564 flow [2024-11-09 02:49:58,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1564, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-11-09 02:49:58,466 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-11-09 02:49:58,467 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1564 flow [2024-11-09 02:49:58,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.7) internal successors, (291), 30 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:49:58,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:58,467 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:58,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:49:58,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:58,668 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 02:49:58,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1337116099, now seen corresponding path program 2 times [2024-11-09 02:49:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136482956] [2024-11-09 02:49:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:59,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136482956] [2024-11-09 02:49:59,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136482956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486817858] [2024-11-09 02:49:59,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:59,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:59,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:59,515 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 02:49:59,516 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 02:49:59,572 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:59,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:59,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 02:49:59,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:59,953 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-09 02:49:59,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 17 [2024-11-09 02:49:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:59,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:00,219 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-09 02:50:00,219 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 74 treesize of output 60 [2024-11-09 02:50:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486817858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:00,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:00,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2024-11-09 02:50:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893311444] [2024-11-09 02:50:00,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:00,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 02:50:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 02:50:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2024-11-09 02:50:00,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:00,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1564 flow. Second operand has 29 states, 29 states have (on average 9.89655172413793) internal successors, (287), 29 states have internal predecessors, (287), 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 02:50:00,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:00,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:00,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:04,113 INFO L124 PetriNetUnfolderBase]: 10358/19958 cut-off events. [2024-11-09 02:50:04,114 INFO L125 PetriNetUnfolderBase]: For 44512/44512 co-relation queries the response was YES. [2024-11-09 02:50:04,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58671 conditions, 19958 events. 10358/19958 cut-off events. For 44512/44512 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 152397 event pairs, 2347 based on Foata normal form. 35/18666 useless extension candidates. Maximal degree in co-relation 58635. Up to 3300 conditions per place. [2024-11-09 02:50:04,211 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 348 selfloop transitions, 173 changer transitions 83/611 dead transitions. [2024-11-09 02:50:04,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 611 transitions, 5515 flow [2024-11-09 02:50:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 02:50:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-09 02:50:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 604 transitions. [2024-11-09 02:50:04,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-11-09 02:50:04,214 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1564 flow. Second operand 33 states and 604 transitions. [2024-11-09 02:50:04,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 611 transitions, 5515 flow [2024-11-09 02:50:04,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 611 transitions, 4731 flow, removed 385 selfloop flow, removed 5 redundant places. [2024-11-09 02:50:04,444 INFO L231 Difference]: Finished difference. Result has 160 places, 269 transitions, 3032 flow [2024-11-09 02:50:04,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3032, PETRI_PLACES=160, PETRI_TRANSITIONS=269} [2024-11-09 02:50:04,445 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-11-09 02:50:04,445 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 269 transitions, 3032 flow [2024-11-09 02:50:04,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.89655172413793) internal successors, (287), 29 states have internal predecessors, (287), 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 02:50:04,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:04,445 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:04,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:50:04,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 02:50:04,650 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 02:50:04,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2122004758, now seen corresponding path program 3 times [2024-11-09 02:50:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:04,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706847387] [2024-11-09 02:50:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706847387] [2024-11-09 02:50:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706847387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108324896] [2024-11-09 02:50:05,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:50:05,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:05,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:05,719 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 02:50:05,720 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 02:50:05,802 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 02:50:05,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:05,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:50:05,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:05,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:06,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:50:06,123 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 75 treesize of output 60 [2024-11-09 02:50:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 02:50:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108324896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:06,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2024-11-09 02:50:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285345791] [2024-11-09 02:50:06,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:06,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 02:50:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 02:50:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-09 02:50:06,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:06,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 269 transitions, 3032 flow. Second operand has 22 states, 22 states have (on average 10.818181818181818) internal successors, (238), 22 states have internal predecessors, (238), 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 02:50:06,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:06,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:06,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:09,115 INFO L124 PetriNetUnfolderBase]: 10851/20850 cut-off events. [2024-11-09 02:50:09,115 INFO L125 PetriNetUnfolderBase]: For 67966/67966 co-relation queries the response was YES. [2024-11-09 02:50:09,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64834 conditions, 20850 events. 10851/20850 cut-off events. For 67966/67966 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 160740 event pairs, 4422 based on Foata normal form. 2/19460 useless extension candidates. Maximal degree in co-relation 64782. Up to 13638 conditions per place. [2024-11-09 02:50:09,217 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 302 selfloop transitions, 53 changer transitions 53/415 dead transitions. [2024-11-09 02:50:09,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 415 transitions, 4493 flow [2024-11-09 02:50:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:50:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:50:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 292 transitions. [2024-11-09 02:50:09,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5367647058823529 [2024-11-09 02:50:09,218 INFO L175 Difference]: Start difference. First operand has 160 places, 269 transitions, 3032 flow. Second operand 17 states and 292 transitions. [2024-11-09 02:50:09,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 415 transitions, 4493 flow [2024-11-09 02:50:09,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 415 transitions, 4104 flow, removed 173 selfloop flow, removed 14 redundant places. [2024-11-09 02:50:09,519 INFO L231 Difference]: Finished difference. Result has 165 places, 278 transitions, 2887 flow [2024-11-09 02:50:09,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2887, PETRI_PLACES=165, PETRI_TRANSITIONS=278} [2024-11-09 02:50:09,519 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-11-09 02:50:09,519 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 278 transitions, 2887 flow [2024-11-09 02:50:09,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.818181818181818) internal successors, (238), 22 states have internal predecessors, (238), 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 02:50:09,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:09,520 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:09,533 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 02:50:09,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:09,720 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 02:50:09,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2084958078, now seen corresponding path program 4 times [2024-11-09 02:50:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:09,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781304976] [2024-11-09 02:50:09,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:09,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:10,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781304976] [2024-11-09 02:50:10,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781304976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27907348] [2024-11-09 02:50:10,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:50:10,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:10,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:10,585 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 02:50:10,587 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 02:50:10,687 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:50:10,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:10,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:50:10,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:10,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:11,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:50:11,037 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 75 treesize of output 60 [2024-11-09 02:50:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 02:50:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27907348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:11,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-09 02:50:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789388387] [2024-11-09 02:50:11,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:11,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:50:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:50:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:50:11,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:11,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 278 transitions, 2887 flow. Second operand has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 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 02:50:11,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:11,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:11,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:14,046 INFO L124 PetriNetUnfolderBase]: 11401/21903 cut-off events. [2024-11-09 02:50:14,047 INFO L125 PetriNetUnfolderBase]: For 66112/66112 co-relation queries the response was YES. [2024-11-09 02:50:14,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67114 conditions, 21903 events. 11401/21903 cut-off events. For 66112/66112 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 170860 event pairs, 4392 based on Foata normal form. 4/20445 useless extension candidates. Maximal degree in co-relation 67061. Up to 12750 conditions per place. [2024-11-09 02:50:14,164 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 298 selfloop transitions, 71 changer transitions 60/436 dead transitions. [2024-11-09 02:50:14,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 436 transitions, 4441 flow [2024-11-09 02:50:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:50:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:50:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 324 transitions. [2024-11-09 02:50:14,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2024-11-09 02:50:14,166 INFO L175 Difference]: Start difference. First operand has 165 places, 278 transitions, 2887 flow. Second operand 19 states and 324 transitions. [2024-11-09 02:50:14,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 436 transitions, 4441 flow [2024-11-09 02:50:14,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 436 transitions, 4329 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-11-09 02:50:14,557 INFO L231 Difference]: Finished difference. Result has 180 places, 286 transitions, 3099 flow [2024-11-09 02:50:14,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3099, PETRI_PLACES=180, PETRI_TRANSITIONS=286} [2024-11-09 02:50:14,559 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-11-09 02:50:14,559 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 286 transitions, 3099 flow [2024-11-09 02:50:14,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 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 02:50:14,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:14,563 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:14,580 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 02:50:14,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:14,764 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 02:50:14,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash -244335542, now seen corresponding path program 5 times [2024-11-09 02:50:14,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:14,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382503196] [2024-11-09 02:50:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:14,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:14,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382503196] [2024-11-09 02:50:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382503196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:14,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594189588] [2024-11-09 02:50:14,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:50:14,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:14,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:14,846 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 02:50:14,847 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 02:50:14,915 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-09 02:50:14,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:14,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:14,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:50:14,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594189588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:15,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 10 [2024-11-09 02:50:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149928915] [2024-11-09 02:50:15,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:15,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:50:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:50:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:50:15,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:15,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 286 transitions, 3099 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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 02:50:15,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:15,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:18,709 INFO L124 PetriNetUnfolderBase]: 14785/28730 cut-off events. [2024-11-09 02:50:18,709 INFO L125 PetriNetUnfolderBase]: For 97610/97610 co-relation queries the response was YES. [2024-11-09 02:50:18,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89581 conditions, 28730 events. 14785/28730 cut-off events. For 97610/97610 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 232814 event pairs, 4020 based on Foata normal form. 136/26965 useless extension candidates. Maximal degree in co-relation 89525. Up to 11254 conditions per place. [2024-11-09 02:50:18,899 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 208 selfloop transitions, 179 changer transitions 0/394 dead transitions. [2024-11-09 02:50:18,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 394 transitions, 5047 flow [2024-11-09 02:50:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:50:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:50:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-11-09 02:50:18,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-09 02:50:18,900 INFO L175 Difference]: Start difference. First operand has 180 places, 286 transitions, 3099 flow. Second operand 5 states and 102 transitions. [2024-11-09 02:50:18,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 394 transitions, 5047 flow [2024-11-09 02:50:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 394 transitions, 4855 flow, removed 39 selfloop flow, removed 15 redundant places. [2024-11-09 02:50:19,310 INFO L231 Difference]: Finished difference. Result has 172 places, 343 transitions, 4525 flow [2024-11-09 02:50:19,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4525, PETRI_PLACES=172, PETRI_TRANSITIONS=343} [2024-11-09 02:50:19,310 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-11-09 02:50:19,310 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 343 transitions, 4525 flow [2024-11-09 02:50:19,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 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 02:50:19,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:19,310 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:19,323 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 02:50:19,511 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,SelfDestructingSolverStorable13 [2024-11-09 02:50:19,511 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 02:50:19,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:19,511 INFO L85 PathProgramCache]: Analyzing trace with hash 142617547, now seen corresponding path program 6 times [2024-11-09 02:50:19,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:19,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145242435] [2024-11-09 02:50:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:50:19,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145242435] [2024-11-09 02:50:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145242435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926088986] [2024-11-09 02:50:19,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:50:19,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:19,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:19,596 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 02:50:19,601 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 02:50:19,661 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:50:19,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:19,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:50:19,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:50:19,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:50:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926088986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:19,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:19,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-09 02:50:19,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23414323] [2024-11-09 02:50:19,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:19,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:50:19,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:50:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:50:19,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:19,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 343 transitions, 4525 flow. Second operand has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 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 02:50:19,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:19,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:19,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:23,649 INFO L124 PetriNetUnfolderBase]: 14237/27490 cut-off events. [2024-11-09 02:50:23,649 INFO L125 PetriNetUnfolderBase]: For 113360/113360 co-relation queries the response was YES. [2024-11-09 02:50:23,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89968 conditions, 27490 events. 14237/27490 cut-off events. For 113360/113360 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 223695 event pairs, 7365 based on Foata normal form. 11/25670 useless extension candidates. Maximal degree in co-relation 89911. Up to 23692 conditions per place. [2024-11-09 02:50:23,805 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 318 selfloop transitions, 6 changer transitions 50/381 dead transitions. [2024-11-09 02:50:23,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 381 transitions, 5187 flow [2024-11-09 02:50:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:50:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:50:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-09 02:50:23,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:50:23,806 INFO L175 Difference]: Start difference. First operand has 172 places, 343 transitions, 4525 flow. Second operand 9 states and 144 transitions. [2024-11-09 02:50:23,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 381 transitions, 5187 flow [2024-11-09 02:50:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 381 transitions, 4911 flow, removed 111 selfloop flow, removed 3 redundant places. [2024-11-09 02:50:24,235 INFO L231 Difference]: Finished difference. Result has 177 places, 327 transitions, 4014 flow [2024-11-09 02:50:24,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4014, PETRI_PLACES=177, PETRI_TRANSITIONS=327} [2024-11-09 02:50:24,236 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-11-09 02:50:24,236 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 327 transitions, 4014 flow [2024-11-09 02:50:24,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 17 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 02:50:24,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:24,236 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:24,248 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 02:50:24,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:50:24,440 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 02:50:24,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1515771856, now seen corresponding path program 7 times [2024-11-09 02:50:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716960955] [2024-11-09 02:50:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 02:50:24,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:24,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716960955] [2024-11-09 02:50:24,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716960955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:24,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105970521] [2024-11-09 02:50:24,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:50:24,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:24,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:24,540 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 02:50:24,541 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 02:50:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:24,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:24,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 02:50:24,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 02:50:24,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105970521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:24,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:24,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-09 02:50:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421756666] [2024-11-09 02:50:24,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:24,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:50:24,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:50:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:50:24,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:24,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 327 transitions, 4014 flow. Second operand has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 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 02:50:24,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:24,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:24,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:26,127 INFO L124 PetriNetUnfolderBase]: 4680/8982 cut-off events. [2024-11-09 02:50:26,127 INFO L125 PetriNetUnfolderBase]: For 35248/35248 co-relation queries the response was YES. [2024-11-09 02:50:26,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29056 conditions, 8982 events. 4680/8982 cut-off events. For 35248/35248 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 62607 event pairs, 3754 based on Foata normal form. 55/8422 useless extension candidates. Maximal degree in co-relation 29000. Up to 7103 conditions per place. [2024-11-09 02:50:26,170 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 90 selfloop transitions, 4 changer transitions 60/161 dead transitions. [2024-11-09 02:50:26,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 161 transitions, 1837 flow [2024-11-09 02:50:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:50:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:50:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-11-09 02:50:26,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-11-09 02:50:26,171 INFO L175 Difference]: Start difference. First operand has 177 places, 327 transitions, 4014 flow. Second operand 10 states and 150 transitions. [2024-11-09 02:50:26,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 161 transitions, 1837 flow [2024-11-09 02:50:26,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 161 transitions, 1519 flow, removed 93 selfloop flow, removed 32 redundant places. [2024-11-09 02:50:26,319 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 950 flow [2024-11-09 02:50:26,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-11-09 02:50:26,319 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-11-09 02:50:26,319 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 950 flow [2024-11-09 02:50:26,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 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 02:50:26,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:26,320 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:26,332 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 02:50:26,520 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,SelfDestructingSolverStorable15 [2024-11-09 02:50:26,521 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 02:50:26,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -49337493, now seen corresponding path program 8 times [2024-11-09 02:50:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926419792] [2024-11-09 02:50:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:27,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926419792] [2024-11-09 02:50:27,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926419792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693737047] [2024-11-09 02:50:27,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:50:27,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:27,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:27,604 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 02:50:27,605 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 02:50:27,662 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:50:27,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:27,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 02:50:27,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:28,266 INFO L349 Elim1Store]: treesize reduction 58, result has 10.8 percent of original size [2024-11-09 02:50:28,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2024-11-09 02:50:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:28,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:28,806 INFO L349 Elim1Store]: treesize reduction 32, result has 70.6 percent of original size [2024-11-09 02:50:28,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 106 [2024-11-09 02:50:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693737047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:29,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2024-11-09 02:50:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50337827] [2024-11-09 02:50:29,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:29,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 02:50:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 02:50:29,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1220, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 02:50:29,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:29,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 950 flow. Second operand has 39 states, 39 states have (on average 9.692307692307692) internal successors, (378), 39 states have internal predecessors, (378), 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 02:50:29,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:29,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:29,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:40,075 INFO L124 PetriNetUnfolderBase]: 17022/32635 cut-off events. [2024-11-09 02:50:40,076 INFO L125 PetriNetUnfolderBase]: For 68630/68630 co-relation queries the response was YES. [2024-11-09 02:50:40,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92895 conditions, 32635 events. 17022/32635 cut-off events. For 68630/68630 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 279649 event pairs, 2770 based on Foata normal form. 136/30593 useless extension candidates. Maximal degree in co-relation 92864. Up to 5710 conditions per place. [2024-11-09 02:50:40,207 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 637 selfloop transitions, 353 changer transitions 307/1304 dead transitions. [2024-11-09 02:50:40,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1304 transitions, 10205 flow [2024-11-09 02:50:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-09 02:50:40,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2024-11-09 02:50:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 1715 transitions. [2024-11-09 02:50:40,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641447368421053 [2024-11-09 02:50:40,213 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 950 flow. Second operand 95 states and 1715 transitions. [2024-11-09 02:50:40,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1304 transitions, 10205 flow [2024-11-09 02:50:40,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1304 transitions, 10107 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-11-09 02:50:40,294 INFO L231 Difference]: Finished difference. Result has 221 places, 441 transitions, 6017 flow [2024-11-09 02:50:40,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=6017, PETRI_PLACES=221, PETRI_TRANSITIONS=441} [2024-11-09 02:50:40,295 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-11-09 02:50:40,295 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 441 transitions, 6017 flow [2024-11-09 02:50:40,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 9.692307692307692) internal successors, (378), 39 states have internal predecessors, (378), 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 02:50:40,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:40,295 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:40,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 02:50:40,495 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,SelfDestructingSolverStorable16 [2024-11-09 02:50:40,496 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 02:50:40,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1889069495, now seen corresponding path program 9 times [2024-11-09 02:50:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:40,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909616019] [2024-11-09 02:50:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:40,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909616019] [2024-11-09 02:50:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909616019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290211444] [2024-11-09 02:50:41,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:50:41,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:41,354 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 02:50:41,355 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 02:50:41,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 02:50:41,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:41,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 02:50:41,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:42,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:42,492 INFO L349 Elim1Store]: treesize reduction 41, result has 60.2 percent of original size [2024-11-09 02:50:42,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 107 treesize of output 91 [2024-11-09 02:50:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290211444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:42,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:42,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2024-11-09 02:50:42,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839329447] [2024-11-09 02:50:42,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:42,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 02:50:42,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 02:50:42,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 02:50:42,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-09 02:50:42,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 441 transitions, 6017 flow. Second operand has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 36 states have internal predecessors, (357), 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 02:50:42,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:42,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-09 02:50:42,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:51,307 INFO L124 PetriNetUnfolderBase]: 17070/33279 cut-off events. [2024-11-09 02:50:51,307 INFO L125 PetriNetUnfolderBase]: For 338246/338246 co-relation queries the response was YES. [2024-11-09 02:50:51,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121316 conditions, 33279 events. 17070/33279 cut-off events. For 338246/338246 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 270559 event pairs, 2605 based on Foata normal form. 586/31591 useless extension candidates. Maximal degree in co-relation 121248. Up to 5670 conditions per place. [2024-11-09 02:50:51,576 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 335 selfloop transitions, 306 changer transitions 418/1066 dead transitions. [2024-11-09 02:50:51,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1066 transitions, 12387 flow [2024-11-09 02:50:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-09 02:50:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-09 02:50:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1067 transitions. [2024-11-09 02:50:51,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5651483050847458 [2024-11-09 02:50:51,578 INFO L175 Difference]: Start difference. First operand has 221 places, 441 transitions, 6017 flow. Second operand 59 states and 1067 transitions. [2024-11-09 02:50:51,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1066 transitions, 12387 flow [2024-11-09 02:50:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1066 transitions, 9644 flow, removed 1339 selfloop flow, removed 17 redundant places. [2024-11-09 02:50:53,195 INFO L231 Difference]: Finished difference. Result has 278 places, 396 transitions, 5159 flow [2024-11-09 02:50:53,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=5159, PETRI_PLACES=278, PETRI_TRANSITIONS=396} [2024-11-09 02:50:53,196 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-11-09 02:50:53,196 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 396 transitions, 5159 flow [2024-11-09 02:50:53,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.916666666666666) internal successors, (357), 36 states have internal predecessors, (357), 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 02:50:53,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:53,196 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:53,208 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 02:50:53,397 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,SelfDestructingSolverStorable17 [2024-11-09 02:50:53,397 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 02:50:53,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1320896951, now seen corresponding path program 10 times [2024-11-09 02:50:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:53,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326499990] [2024-11-09 02:50:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326499990] [2024-11-09 02:50:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326499990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652451597] [2024-11-09 02:50:54,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:50:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:54,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:54,108 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 02:50:54,109 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 02:50:54,171 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:50:54,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:54,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 02:50:54,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:54,242 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 02:50:54,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 02:50:54,715 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 02:50:54,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:50:54,717 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 43 treesize of output 18 [2024-11-09 02:50:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:54,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:56,005 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 198 treesize of output 180 [2024-11-09 02:50:56,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:50:56,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 540 treesize of output 524