./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.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 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:38:07,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:38:07,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:38:07,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:38:07,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:38:07,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:38:07,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:38:07,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:38:07,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:38:07,161 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:38:07,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:38:07,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:38:07,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:38:07,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:38:07,162 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:38:07,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:38:07,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:38:07,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:38:07,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:38:07,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:38:07,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:38:07,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:38:07,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:38:07,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:38:07,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:38:07,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:38:07,168 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:38:07,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:38:07,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:38:07,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:38:07,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:38:07,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:38:07,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:38:07,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:38:07,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:38:07,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:38:07,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:38:07,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:38:07,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:38:07,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:38:07,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:38:07,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:38:07,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2024-11-20 09:38:07,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:38:07,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:38:07,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:38:07,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:38:07,445 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:38:07,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-20 09:38:09,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:38:09,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:38:09,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-11-20 09:38:09,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7b886b0/68d8e54ef02f4e1e9c6d3a796812b0d4/FLAG0704db93e [2024-11-20 09:38:09,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d7b886b0/68d8e54ef02f4e1e9c6d3a796812b0d4 [2024-11-20 09:38:09,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:38:09,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:38:09,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:38:09,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:38:09,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:38:09,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f664d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09, skipping insertion in model container [2024-11-20 09:38:09,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,280 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:38:09,498 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/parallel-lamport.wvr.c[3044,3057] [2024-11-20 09:38:09,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:38:09,529 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:38:09,555 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/parallel-lamport.wvr.c[3044,3057] [2024-11-20 09:38:09,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:38:09,572 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:38:09,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09 WrapperNode [2024-11-20 09:38:09,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:38:09,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:38:09,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:38:09,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:38:09,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,618 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 207 [2024-11-20 09:38:09,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:38:09,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:38:09,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:38:09,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:38:09,632 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,656 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 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]. [2024-11-20 09:38:09,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:38:09,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:38:09,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:38:09,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:38:09,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (1/1) ... [2024-11-20 09:38:09,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:38:09,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:09,729 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) [2024-11-20 09:38:09,738 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 [2024-11-20 09:38:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:38:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:38:09,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:38:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:38:09,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:38:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:38:09,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:38:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:38:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:38:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:38:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:38:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:38:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:38:09,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:38:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:38:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:38:09,784 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:38:09,896 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:38:09,899 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:38:10,158 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:38:10,158 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:38:10,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:38:10,320 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 09:38:10,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:10 BoogieIcfgContainer [2024-11-20 09:38:10,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:38:10,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:38:10,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:38:10,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:38:10,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:38:09" (1/3) ... [2024-11-20 09:38:10,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428343ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:10, skipping insertion in model container [2024-11-20 09:38:10,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:09" (2/3) ... [2024-11-20 09:38:10,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428343ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:10, skipping insertion in model container [2024-11-20 09:38:10,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:10" (3/3) ... [2024-11-20 09:38:10,330 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-11-20 09:38:10,345 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:38:10,346 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:38:10,346 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:38:10,415 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:38:10,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 141 flow [2024-11-20 09:38:10,485 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-11-20 09:38:10,485 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:38:10,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 1/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-20 09:38:10,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 141 flow [2024-11-20 09:38:10,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 130 flow [2024-11-20 09:38:10,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:38:10,509 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;@ec2dc0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:38:10,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:38:10,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:38:10,534 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-11-20 09:38:10,534 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:38:10,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:10,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:10,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:10,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash 397029173, now seen corresponding path program 1 times [2024-11-20 09:38:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:10,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220012544] [2024-11-20 09:38:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:10,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220012544] [2024-11-20 09:38:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220012544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:11,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:11,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55079012] [2024-11-20 09:38:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:11,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:11,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:11,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-20 09:38:11,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2024-11-20 09:38:11,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:11,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-20 09:38:11,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:11,388 INFO L124 PetriNetUnfolderBase]: 307/620 cut-off events. [2024-11-20 09:38:11,389 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-20 09:38:11,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 620 events. 307/620 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3464 event pairs, 306 based on Foata normal form. 0/570 useless extension candidates. Maximal degree in co-relation 1036. Up to 507 conditions per place. [2024-11-20 09:38:11,400 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 28 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-20 09:38:11,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 192 flow [2024-11-20 09:38:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-20 09:38:11,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-11-20 09:38:11,415 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 130 flow. Second operand 3 states and 121 transitions. [2024-11-20 09:38:11,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 192 flow [2024-11-20 09:38:11,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 180 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:38:11,425 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 130 flow [2024-11-20 09:38:11,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-11-20 09:38:11,431 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-20 09:38:11,432 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 130 flow [2024-11-20 09:38:11,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2024-11-20 09:38:11,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:11,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:11,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:38:11,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:11,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1513207931, now seen corresponding path program 1 times [2024-11-20 09:38:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885758584] [2024-11-20 09:38:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:12,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885758584] [2024-11-20 09:38:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885758584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039313044] [2024-11-20 09:38:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:12,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:12,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:12,055 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) [2024-11-20 09:38:12,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:38:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:12,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 09:38:12,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:12,272 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 [2024-11-20 09:38:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:12,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:13,391 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 72 treesize of output 64 [2024-11-20 09:38:13,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:38:13,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-20 09:38:13,791 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 74 treesize of output 66 [2024-11-20 09:38:13,830 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-20 09:38:13,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-20 09:38:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039313044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:13,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2024-11-20 09:38:13,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769154640] [2024-11-20 09:38:13,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:13,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:38:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:38:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:38:14,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-20 09:38:14,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 130 flow. Second operand has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 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) [2024-11-20 09:38:14,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:14,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-20 09:38:14,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:17,096 INFO L124 PetriNetUnfolderBase]: 4073/6876 cut-off events. [2024-11-20 09:38:17,096 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-20 09:38:17,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13409 conditions, 6876 events. 4073/6876 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 48346 event pairs, 563 based on Foata normal form. 4/6840 useless extension candidates. Maximal degree in co-relation 13379. Up to 1476 conditions per place. [2024-11-20 09:38:17,134 INFO L140 encePairwiseOnDemand]: 40/60 looper letters, 218 selfloop transitions, 122 changer transitions 95/453 dead transitions. [2024-11-20 09:38:17,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 453 transitions, 1862 flow [2024-11-20 09:38:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-20 09:38:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-20 09:38:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1342 transitions. [2024-11-20 09:38:17,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5201550387596899 [2024-11-20 09:38:17,148 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 130 flow. Second operand 43 states and 1342 transitions. [2024-11-20 09:38:17,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 453 transitions, 1862 flow [2024-11-20 09:38:17,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 453 transitions, 1858 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:17,157 INFO L231 Difference]: Finished difference. Result has 120 places, 188 transitions, 845 flow [2024-11-20 09:38:17,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=845, PETRI_PLACES=120, PETRI_TRANSITIONS=188} [2024-11-20 09:38:17,158 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-20 09:38:17,158 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 188 transitions, 845 flow [2024-11-20 09:38:17,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.46153846153846) internal successors, (636), 26 states have internal predecessors, (636), 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) [2024-11-20 09:38:17,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:17,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:17,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:38:17,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:17,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:17,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1608375147, now seen corresponding path program 2 times [2024-11-20 09:38:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:17,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989834864] [2024-11-20 09:38:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:17,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989834864] [2024-11-20 09:38:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989834864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:17,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:38:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880144281] [2024-11-20 09:38:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:17,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:38:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:38:17,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:38:17,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-11-20 09:38:17,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 188 transitions, 845 flow. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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) [2024-11-20 09:38:17,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:17,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-11-20 09:38:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:18,439 INFO L124 PetriNetUnfolderBase]: 4728/8589 cut-off events. [2024-11-20 09:38:18,439 INFO L125 PetriNetUnfolderBase]: For 12092/12284 co-relation queries the response was YES. [2024-11-20 09:38:18,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22962 conditions, 8589 events. 4728/8589 cut-off events. For 12092/12284 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 64376 event pairs, 1236 based on Foata normal form. 135/8492 useless extension candidates. Maximal degree in co-relation 22923. Up to 3149 conditions per place. [2024-11-20 09:38:18,495 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 166 selfloop transitions, 7 changer transitions 4/273 dead transitions. [2024-11-20 09:38:18,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 273 transitions, 1596 flow [2024-11-20 09:38:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:38:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:38:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-11-20 09:38:18,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-11-20 09:38:18,497 INFO L175 Difference]: Start difference. First operand has 120 places, 188 transitions, 845 flow. Second operand 5 states and 194 transitions. [2024-11-20 09:38:18,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 273 transitions, 1596 flow [2024-11-20 09:38:18,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 273 transitions, 1554 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-20 09:38:18,595 INFO L231 Difference]: Finished difference. Result has 120 places, 192 transitions, 858 flow [2024-11-20 09:38:18,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=120, PETRI_TRANSITIONS=192} [2024-11-20 09:38:18,598 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 55 predicate places. [2024-11-20 09:38:18,601 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 192 transitions, 858 flow [2024-11-20 09:38:18,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 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) [2024-11-20 09:38:18,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:18,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:18,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:38:18,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:18,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -671902333, now seen corresponding path program 3 times [2024-11-20 09:38:18,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:18,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490558854] [2024-11-20 09:38:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:18,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:18,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490558854] [2024-11-20 09:38:18,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490558854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:18,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308237841] [2024-11-20 09:38:18,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:38:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:18,988 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) [2024-11-20 09:38:18,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:38:19,099 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 09:38:19,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:19,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:38:19,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:19,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:38:19,278 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:38:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:19,290 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:38:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308237841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:19,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:38:19,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 18 [2024-11-20 09:38:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256136887] [2024-11-20 09:38:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:19,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:38:19,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:19,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:38:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-20 09:38:19,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:38:19,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 192 transitions, 858 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:38:19,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:19,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:38:19,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:22,362 INFO L124 PetriNetUnfolderBase]: 7108/12011 cut-off events. [2024-11-20 09:38:22,363 INFO L125 PetriNetUnfolderBase]: For 17144/17323 co-relation queries the response was YES. [2024-11-20 09:38:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 12011 events. 7108/12011 cut-off events. For 17144/17323 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86750 event pairs, 1361 based on Foata normal form. 179/12059 useless extension candidates. Maximal degree in co-relation 31480. Up to 7466 conditions per place. [2024-11-20 09:38:22,454 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 327 selfloop transitions, 180 changer transitions 42/569 dead transitions. [2024-11-20 09:38:22,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 569 transitions, 3716 flow [2024-11-20 09:38:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-20 09:38:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-20 09:38:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 929 transitions. [2024-11-20 09:38:22,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553921568627451 [2024-11-20 09:38:22,458 INFO L175 Difference]: Start difference. First operand has 120 places, 192 transitions, 858 flow. Second operand 34 states and 929 transitions. [2024-11-20 09:38:22,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 569 transitions, 3716 flow [2024-11-20 09:38:22,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 569 transitions, 3712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:22,600 INFO L231 Difference]: Finished difference. Result has 181 places, 354 transitions, 2479 flow [2024-11-20 09:38:22,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2479, PETRI_PLACES=181, PETRI_TRANSITIONS=354} [2024-11-20 09:38:22,601 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 116 predicate places. [2024-11-20 09:38:22,601 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 354 transitions, 2479 flow [2024-11-20 09:38:22,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:38:22,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:22,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:22,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:38:22,806 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,SelfDestructingSolverStorable3 [2024-11-20 09:38:22,808 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:22,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash 985432113, now seen corresponding path program 4 times [2024-11-20 09:38:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100991495] [2024-11-20 09:38:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:22,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100991495] [2024-11-20 09:38:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100991495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941138235] [2024-11-20 09:38:23,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:38:23,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:23,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:23,361 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) [2024-11-20 09:38:23,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:38:23,426 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:38:23,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:23,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:38:23,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:23,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:38:23,655 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:38:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:23,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:38:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941138235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:23,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:38:23,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 18 [2024-11-20 09:38:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904295196] [2024-11-20 09:38:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:23,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:38:23,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:38:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-20 09:38:23,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:38:23,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 354 transitions, 2479 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:38:23,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:23,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:38:23,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:27,501 INFO L124 PetriNetUnfolderBase]: 9629/16154 cut-off events. [2024-11-20 09:38:27,501 INFO L125 PetriNetUnfolderBase]: For 53504/53747 co-relation queries the response was YES. [2024-11-20 09:38:27,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60595 conditions, 16154 events. 9629/16154 cut-off events. For 53504/53747 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 122262 event pairs, 1751 based on Foata normal form. 243/16235 useless extension candidates. Maximal degree in co-relation 60330. Up to 9448 conditions per place. [2024-11-20 09:38:27,733 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 569 selfloop transitions, 305 changer transitions 37/931 dead transitions. [2024-11-20 09:38:27,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 931 transitions, 8158 flow [2024-11-20 09:38:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-20 09:38:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-20 09:38:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 962 transitions. [2024-11-20 09:38:27,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4580952380952381 [2024-11-20 09:38:27,739 INFO L175 Difference]: Start difference. First operand has 181 places, 354 transitions, 2479 flow. Second operand 35 states and 962 transitions. [2024-11-20 09:38:27,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 931 transitions, 8158 flow [2024-11-20 09:38:28,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 931 transitions, 7886 flow, removed 132 selfloop flow, removed 2 redundant places. [2024-11-20 09:38:28,452 INFO L231 Difference]: Finished difference. Result has 237 places, 643 transitions, 5650 flow [2024-11-20 09:38:28,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5650, PETRI_PLACES=237, PETRI_TRANSITIONS=643} [2024-11-20 09:38:28,453 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 172 predicate places. [2024-11-20 09:38:28,453 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 643 transitions, 5650 flow [2024-11-20 09:38:28,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:38:28,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:28,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:28,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 09:38:28,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:28,654 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:28,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1419450349, now seen corresponding path program 5 times [2024-11-20 09:38:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:28,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064336012] [2024-11-20 09:38:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:29,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064336012] [2024-11-20 09:38:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064336012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538647780] [2024-11-20 09:38:29,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:38:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:29,209 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) [2024-11-20 09:38:29,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:38:29,286 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:38:29,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:29,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 09:38:29,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:29,479 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 15 treesize of output 7 [2024-11-20 09:38:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:29,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:29,592 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 09:38:29,592 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 19 treesize of output 7 [2024-11-20 09:38:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538647780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:29,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-20 09:38:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24332727] [2024-11-20 09:38:29,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:29,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 09:38:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 09:38:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:38:29,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-20 09:38:29,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 643 transitions, 5650 flow. Second operand has 19 states, 19 states have (on average 24.36842105263158) internal successors, (463), 19 states have internal predecessors, (463), 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) [2024-11-20 09:38:29,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:29,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-20 09:38:29,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:33,419 INFO L124 PetriNetUnfolderBase]: 9366/16061 cut-off events. [2024-11-20 09:38:33,419 INFO L125 PetriNetUnfolderBase]: For 91723/92083 co-relation queries the response was YES. [2024-11-20 09:38:33,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70306 conditions, 16061 events. 9366/16061 cut-off events. For 91723/92083 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 126350 event pairs, 1482 based on Foata normal form. 258/16096 useless extension candidates. Maximal degree in co-relation 69244. Up to 5417 conditions per place. [2024-11-20 09:38:33,735 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 573 selfloop transitions, 245 changer transitions 10/858 dead transitions. [2024-11-20 09:38:33,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 858 transitions, 8967 flow [2024-11-20 09:38:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 09:38:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 09:38:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 521 transitions. [2024-11-20 09:38:33,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5107843137254902 [2024-11-20 09:38:33,745 INFO L175 Difference]: Start difference. First operand has 237 places, 643 transitions, 5650 flow. Second operand 17 states and 521 transitions. [2024-11-20 09:38:33,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 858 transitions, 8967 flow [2024-11-20 09:38:35,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 858 transitions, 8245 flow, removed 361 selfloop flow, removed 0 redundant places. [2024-11-20 09:38:35,133 INFO L231 Difference]: Finished difference. Result has 262 places, 733 transitions, 6792 flow [2024-11-20 09:38:35,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6792, PETRI_PLACES=262, PETRI_TRANSITIONS=733} [2024-11-20 09:38:35,134 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 197 predicate places. [2024-11-20 09:38:35,134 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 733 transitions, 6792 flow [2024-11-20 09:38:35,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.36842105263158) internal successors, (463), 19 states have internal predecessors, (463), 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) [2024-11-20 09:38:35,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:35,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:35,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:38:35,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:35,336 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:35,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1521122001, now seen corresponding path program 6 times [2024-11-20 09:38:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558226177] [2024-11-20 09:38:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:35,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:35,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558226177] [2024-11-20 09:38:35,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558226177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091068617] [2024-11-20 09:38:35,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:38:35,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:35,671 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) [2024-11-20 09:38:35,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:38:35,751 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-20 09:38:35,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:35,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:38:35,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:35,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:38:35,989 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:38:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:35,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:38:35,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091068617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:35,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:38:35,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-20 09:38:35,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957376292] [2024-11-20 09:38:35,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:35,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:38:35,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:38:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:38:36,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:38:36,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 733 transitions, 6792 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:38:36,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:36,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:38:36,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:42,469 INFO L124 PetriNetUnfolderBase]: 13011/21916 cut-off events. [2024-11-20 09:38:42,469 INFO L125 PetriNetUnfolderBase]: For 143103/143430 co-relation queries the response was YES. [2024-11-20 09:38:42,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101839 conditions, 21916 events. 13011/21916 cut-off events. For 143103/143430 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 174991 event pairs, 2278 based on Foata normal form. 327/22074 useless extension candidates. Maximal degree in co-relation 100859. Up to 14498 conditions per place. [2024-11-20 09:38:43,050 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 819 selfloop transitions, 382 changer transitions 50/1271 dead transitions. [2024-11-20 09:38:43,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1271 transitions, 14743 flow [2024-11-20 09:38:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-20 09:38:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-20 09:38:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 943 transitions. [2024-11-20 09:38:43,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46225490196078434 [2024-11-20 09:38:43,060 INFO L175 Difference]: Start difference. First operand has 262 places, 733 transitions, 6792 flow. Second operand 34 states and 943 transitions. [2024-11-20 09:38:43,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1271 transitions, 14743 flow [2024-11-20 09:38:45,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1271 transitions, 14569 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-11-20 09:38:45,631 INFO L231 Difference]: Finished difference. Result has 311 places, 989 transitions, 10935 flow [2024-11-20 09:38:45,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=6712, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10935, PETRI_PLACES=311, PETRI_TRANSITIONS=989} [2024-11-20 09:38:45,633 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 246 predicate places. [2024-11-20 09:38:45,633 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 989 transitions, 10935 flow [2024-11-20 09:38:45,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:38:45,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:45,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:45,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 09:38:45,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:45,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:45,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1486415839, now seen corresponding path program 7 times [2024-11-20 09:38:45,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:45,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753697964] [2024-11-20 09:38:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:45,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:46,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753697964] [2024-11-20 09:38:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753697964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:46,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851708315] [2024-11-20 09:38:46,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:38:46,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:46,319 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) [2024-11-20 09:38:46,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:38:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:46,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 09:38:46,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:46,426 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 [2024-11-20 09:38:46,671 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-20 09:38:46,671 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2024-11-20 09:38:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:46,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:47,410 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 72 treesize of output 64 [2024-11-20 09:38:47,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:38:47,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2024-11-20 09:38:47,771 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 74 treesize of output 66 [2024-11-20 09:38:47,783 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-20 09:38:47,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 1 [2024-11-20 09:38:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:47,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851708315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:47,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2024-11-20 09:38:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410290054] [2024-11-20 09:38:47,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:47,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 09:38:47,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 09:38:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2024-11-20 09:38:48,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-20 09:38:48,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 989 transitions, 10935 flow. Second operand has 26 states, 26 states have (on average 24.53846153846154) internal successors, (638), 26 states have internal predecessors, (638), 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) [2024-11-20 09:38:48,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:48,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-20 09:38:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:55,542 INFO L124 PetriNetUnfolderBase]: 14397/24929 cut-off events. [2024-11-20 09:38:55,542 INFO L125 PetriNetUnfolderBase]: For 207943/208392 co-relation queries the response was YES. [2024-11-20 09:38:56,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125634 conditions, 24929 events. 14397/24929 cut-off events. For 207943/208392 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 213866 event pairs, 1728 based on Foata normal form. 398/25092 useless extension candidates. Maximal degree in co-relation 124667. Up to 7090 conditions per place. [2024-11-20 09:38:56,541 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 466 selfloop transitions, 143 changer transitions 911/1555 dead transitions. [2024-11-20 09:38:56,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1555 transitions, 19730 flow [2024-11-20 09:38:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-20 09:38:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-20 09:38:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1035 transitions. [2024-11-20 09:38:56,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073529411764706 [2024-11-20 09:38:56,544 INFO L175 Difference]: Start difference. First operand has 311 places, 989 transitions, 10935 flow. Second operand 34 states and 1035 transitions. [2024-11-20 09:38:56,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1555 transitions, 19730 flow [2024-11-20 09:39:00,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1555 transitions, 18355 flow, removed 629 selfloop flow, removed 3 redundant places. [2024-11-20 09:39:00,301 INFO L231 Difference]: Finished difference. Result has 357 places, 551 transitions, 5360 flow [2024-11-20 09:39:00,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=9893, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5360, PETRI_PLACES=357, PETRI_TRANSITIONS=551} [2024-11-20 09:39:00,304 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 292 predicate places. [2024-11-20 09:39:00,304 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 551 transitions, 5360 flow [2024-11-20 09:39:00,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 24.53846153846154) internal successors, (638), 26 states have internal predecessors, (638), 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) [2024-11-20 09:39:00,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:00,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:00,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 09:39:00,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:00,505 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:00,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2069612093, now seen corresponding path program 8 times [2024-11-20 09:39:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050131203] [2024-11-20 09:39:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:00,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:39:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050131203] [2024-11-20 09:39:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050131203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708604575] [2024-11-20 09:39:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:39:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:01,033 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) [2024-11-20 09:39:01,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:39:01,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 09:39:01,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:01,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:39:01,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:01,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:39:01,508 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:39:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:01,514 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:39:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708604575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:39:01,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:39:01,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-20 09:39:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304960562] [2024-11-20 09:39:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:39:01,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:39:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:39:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:39:01,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:39:01,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 551 transitions, 5360 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:01,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:01,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:39:01,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:06,715 INFO L124 PetriNetUnfolderBase]: 11409/19290 cut-off events. [2024-11-20 09:39:06,716 INFO L125 PetriNetUnfolderBase]: For 200089/200348 co-relation queries the response was YES. [2024-11-20 09:39:07,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99318 conditions, 19290 events. 11409/19290 cut-off events. For 200089/200348 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 152679 event pairs, 2064 based on Foata normal form. 258/19354 useless extension candidates. Maximal degree in co-relation 99196. Up to 12612 conditions per place. [2024-11-20 09:39:07,319 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 662 selfloop transitions, 300 changer transitions 140/1122 dead transitions. [2024-11-20 09:39:07,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1122 transitions, 13310 flow [2024-11-20 09:39:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-20 09:39:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-20 09:39:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1039 transitions. [2024-11-20 09:39:07,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.444017094017094 [2024-11-20 09:39:07,321 INFO L175 Difference]: Start difference. First operand has 357 places, 551 transitions, 5360 flow. Second operand 39 states and 1039 transitions. [2024-11-20 09:39:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1122 transitions, 13310 flow [2024-11-20 09:39:09,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1122 transitions, 12132 flow, removed 391 selfloop flow, removed 39 redundant places. [2024-11-20 09:39:09,779 INFO L231 Difference]: Finished difference. Result has 365 places, 742 transitions, 8242 flow [2024-11-20 09:39:09,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=4650, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=8242, PETRI_PLACES=365, PETRI_TRANSITIONS=742} [2024-11-20 09:39:09,781 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 300 predicate places. [2024-11-20 09:39:09,783 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 742 transitions, 8242 flow [2024-11-20 09:39:09,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:09,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:09,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:09,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 09:39:09,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:09,988 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:09,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:09,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1752509355, now seen corresponding path program 9 times [2024-11-20 09:39:09,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:09,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936900050] [2024-11-20 09:39:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:09,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:39:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936900050] [2024-11-20 09:39:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936900050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632094369] [2024-11-20 09:39:10,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:39:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:10,364 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) [2024-11-20 09:39:10,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:39:10,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-20 09:39:10,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:10,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 09:39:10,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:10,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:39:10,685 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:39:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:10,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:39:10,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632094369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:39:10,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:39:10,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2024-11-20 09:39:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526312334] [2024-11-20 09:39:10,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:39:10,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:39:10,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:39:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-20 09:39:10,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:39:10,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 742 transitions, 8242 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:10,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:10,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:39:10,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:16,956 INFO L124 PetriNetUnfolderBase]: 12164/20442 cut-off events. [2024-11-20 09:39:16,957 INFO L125 PetriNetUnfolderBase]: For 269151/269398 co-relation queries the response was YES. [2024-11-20 09:39:17,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114941 conditions, 20442 events. 12164/20442 cut-off events. For 269151/269398 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 162736 event pairs, 2046 based on Foata normal form. 244/20487 useless extension candidates. Maximal degree in co-relation 114823. Up to 11904 conditions per place. [2024-11-20 09:39:17,765 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 738 selfloop transitions, 406 changer transitions 73/1237 dead transitions. [2024-11-20 09:39:17,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1237 transitions, 15961 flow [2024-11-20 09:39:17,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-20 09:39:17,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-20 09:39:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1074 transitions. [2024-11-20 09:39:17,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4475 [2024-11-20 09:39:17,771 INFO L175 Difference]: Start difference. First operand has 365 places, 742 transitions, 8242 flow. Second operand 40 states and 1074 transitions. [2024-11-20 09:39:17,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1237 transitions, 15961 flow [2024-11-20 09:39:21,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1237 transitions, 14498 flow, removed 615 selfloop flow, removed 20 redundant places. [2024-11-20 09:39:21,719 INFO L231 Difference]: Finished difference. Result has 377 places, 928 transitions, 11159 flow [2024-11-20 09:39:21,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=11159, PETRI_PLACES=377, PETRI_TRANSITIONS=928} [2024-11-20 09:39:21,721 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 312 predicate places. [2024-11-20 09:39:21,721 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 928 transitions, 11159 flow [2024-11-20 09:39:21,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:21,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:21,722 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:21,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 09:39:21,922 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,SelfDestructingSolverStorable9 [2024-11-20 09:39:21,922 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:21,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash -202934643, now seen corresponding path program 10 times [2024-11-20 09:39:21,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700706759] [2024-11-20 09:39:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:39:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:22,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700706759] [2024-11-20 09:39:22,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700706759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907953347] [2024-11-20 09:39:22,225 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:39:22,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:22,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:22,227 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) [2024-11-20 09:39:22,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 09:39:22,294 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:39:22,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:22,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 09:39:22,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:22,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:39:22,521 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:39:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:22,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:39:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907953347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:39:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:39:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 19 [2024-11-20 09:39:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420467121] [2024-11-20 09:39:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:39:22,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:39:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:39:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2024-11-20 09:39:22,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:39:22,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 928 transitions, 11159 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:22,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:22,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:39:22,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:28,923 INFO L124 PetriNetUnfolderBase]: 12506/21047 cut-off events. [2024-11-20 09:39:28,924 INFO L125 PetriNetUnfolderBase]: For 252538/252785 co-relation queries the response was YES. [2024-11-20 09:39:29,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119330 conditions, 21047 events. 12506/21047 cut-off events. For 252538/252785 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 168202 event pairs, 2049 based on Foata normal form. 246/21100 useless extension candidates. Maximal degree in co-relation 119203. Up to 14179 conditions per place. [2024-11-20 09:39:29,303 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 784 selfloop transitions, 343 changer transitions 62/1209 dead transitions. [2024-11-20 09:39:29,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1209 transitions, 16405 flow [2024-11-20 09:39:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-20 09:39:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-20 09:39:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 843 transitions. [2024-11-20 09:39:29,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4532258064516129 [2024-11-20 09:39:29,305 INFO L175 Difference]: Start difference. First operand has 377 places, 928 transitions, 11159 flow. Second operand 31 states and 843 transitions. [2024-11-20 09:39:29,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1209 transitions, 16405 flow [2024-11-20 09:39:32,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1209 transitions, 15452 flow, removed 416 selfloop flow, removed 11 redundant places. [2024-11-20 09:39:32,911 INFO L231 Difference]: Finished difference. Result has 403 places, 991 transitions, 12355 flow [2024-11-20 09:39:32,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=10320, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=12355, PETRI_PLACES=403, PETRI_TRANSITIONS=991} [2024-11-20 09:39:32,912 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 338 predicate places. [2024-11-20 09:39:32,912 INFO L471 AbstractCegarLoop]: Abstraction has has 403 places, 991 transitions, 12355 flow [2024-11-20 09:39:32,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:32,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:32,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:32,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 09:39:33,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:33,114 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:33,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:33,114 INFO L85 PathProgramCache]: Analyzing trace with hash 633910847, now seen corresponding path program 11 times [2024-11-20 09:39:33,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:33,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296392016] [2024-11-20 09:39:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:39:33,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296392016] [2024-11-20 09:39:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296392016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:33,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367488207] [2024-11-20 09:39:33,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:39:33,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:33,381 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) [2024-11-20 09:39:33,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 09:39:33,451 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:39:33,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:33,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 09:39:33,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:33,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 09:39:33,657 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-11-20 09:39:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:33,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:39:33,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367488207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:39:33,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:39:33,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 20 [2024-11-20 09:39:33,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975426909] [2024-11-20 09:39:33,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:39:33,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 09:39:33,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:33,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 09:39:33,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-20 09:39:33,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-11-20 09:39:33,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 991 transitions, 12355 flow. Second operand has 12 states, 12 states have (on average 22.333333333333332) internal successors, (268), 12 states have internal predecessors, (268), 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) [2024-11-20 09:39:33,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:33,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-11-20 09:39:33,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand