./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/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:35:25,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:35:25,655 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:35:25,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:35:25,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:35:25,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:35:25,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:35:25,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:35:25,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:35:25,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:35:25,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:35:25,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:35:25,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:35:25,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:35:25,695 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:35:25,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:35:25,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:35:25,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:35:25,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:35:25,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:35:25,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:35:25,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:35:25,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:35:25,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:35:25,700 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:35:25,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:35:25,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:35:25,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:35:25,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:35:25,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:35:25,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:35:25,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:35:25,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:35:25,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:35:25,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:35:25,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:35:25,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:35:25,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:35:25,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:35:25,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:35:25,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:35:25,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:35:25,705 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53c8de1752bcaae88365f4089aa38090949baac13984623f5e7e3707a7b4c63 [2024-10-11 14:35:25,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:35:25,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:35:25,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:35:25,935 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:35:25,935 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:35:25,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-10-11 14:35:27,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:35:27,410 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:35:27,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-10-11 14:35:27,417 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a3ffe2157/66429bdc7ab44cb58b1bb7d5239b1363/FLAG4c8dc7606 [2024-10-11 14:35:27,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a3ffe2157/66429bdc7ab44cb58b1bb7d5239b1363 [2024-10-11 14:35:27,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:35:27,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:35:27,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:35:27,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:35:27,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:35:27,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:35:27" (1/1) ... [2024-10-11 14:35:27,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e41d2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:27, skipping insertion in model container [2024-10-11 14:35:27,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:35:27" (1/1) ... [2024-10-11 14:35:27,854 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:35:28,060 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2729,2742] [2024-10-11 14:35:28,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:35:28,079 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:35:28,108 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2729,2742] [2024-10-11 14:35:28,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:35:28,124 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:35:28,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28 WrapperNode [2024-10-11 14:35:28,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:35:28,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:35:28,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:35:28,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:35:28,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,157 INFO L138 Inliner]: procedures = 25, calls = 28, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 109 [2024-10-11 14:35:28,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:35:28,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:35:28,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:35:28,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:35:28,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,181 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 14:35:28,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:35:28,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:35:28,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:35:28,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:35:28,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (1/1) ... [2024-10-11 14:35:28,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:35:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:28,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:35:28,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:35:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:35:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:35:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:35:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:35:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:35:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:35:28,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:35:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:35:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:35:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:35:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:35:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:35:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:35:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:35:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:35:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:35:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:35:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:35:28,288 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:35:28,398 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:35:28,400 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:35:28,613 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:35:28,613 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:35:28,785 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:35:28,786 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-11 14:35:28,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:35:28 BoogieIcfgContainer [2024-10-11 14:35:28,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:35:28,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:35:28,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:35:28,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:35:28,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:35:27" (1/3) ... [2024-10-11 14:35:28,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:35:28, skipping insertion in model container [2024-10-11 14:35:28,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:35:28" (2/3) ... [2024-10-11 14:35:28,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:35:28, skipping insertion in model container [2024-10-11 14:35:28,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:35:28" (3/3) ... [2024-10-11 14:35:28,796 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-10-11 14:35:28,811 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:35:28,811 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:35:28,812 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:35:28,860 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:35:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 38 transitions, 97 flow [2024-10-11 14:35:28,922 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2024-10-11 14:35:28,922 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:35:28,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 6/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-11 14:35:28,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 38 transitions, 97 flow [2024-10-11 14:35:28,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 86 flow [2024-10-11 14:35:28,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:35:28,947 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;@7679bd11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:35:28,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:35:28,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:35:28,958 INFO L124 PetriNetUnfolderBase]: 6/33 cut-off events. [2024-10-11 14:35:28,958 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:35:28,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:28,961 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] [2024-10-11 14:35:28,962 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)] === [2024-10-11 14:35:28,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1124567223, now seen corresponding path program 1 times [2024-10-11 14:35:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:28,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895136917] [2024-10-11 14:35:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:28,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:29,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:29,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895136917] [2024-10-11 14:35:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895136917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:35:29,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294953636] [2024-10-11 14:35:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:29,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:35:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:35:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:35:29,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:35:29,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:29,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:29,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:35:29,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:30,052 INFO L124 PetriNetUnfolderBase]: 649/1143 cut-off events. [2024-10-11 14:35:30,052 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-10-11 14:35:30,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 1143 events. 649/1143 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5716 event pairs, 344 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 1002. Up to 553 conditions per place. [2024-10-11 14:35:30,062 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 43 selfloop transitions, 5 changer transitions 1/57 dead transitions. [2024-10-11 14:35:30,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 248 flow [2024-10-11 14:35:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:35:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:35:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-11 14:35:30,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-10-11 14:35:30,074 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 86 flow. Second operand 4 states and 94 transitions. [2024-10-11 14:35:30,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 248 flow [2024-10-11 14:35:30,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:35:30,080 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 108 flow [2024-10-11 14:35:30,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2024-10-11 14:35:30,085 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2024-10-11 14:35:30,085 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 108 flow [2024-10-11 14:35:30,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:30,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:30,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:30,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:35:30,086 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)] === [2024-10-11 14:35:30,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -37710755, now seen corresponding path program 1 times [2024-10-11 14:35:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969881198] [2024-10-11 14:35:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:30,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969881198] [2024-10-11 14:35:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969881198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511526405] [2024-10-11 14:35:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:30,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:30,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:30,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:35:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:30,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:30,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:30,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511526405] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:30,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:35:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:35:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406892547] [2024-10-11 14:35:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:30,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:35:30,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:35:30,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:30,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:30,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:35:30,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:30,683 INFO L124 PetriNetUnfolderBase]: 1254/2217 cut-off events. [2024-10-11 14:35:30,683 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2024-10-11 14:35:30,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 2217 events. 1254/2217 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12835 event pairs, 795 based on Foata normal form. 0/2081 useless extension candidates. Maximal degree in co-relation 3363. Up to 872 conditions per place. [2024-10-11 14:35:30,698 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 50 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2024-10-11 14:35:30,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 290 flow [2024-10-11 14:35:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:35:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:35:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-10-11 14:35:30,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5684210526315789 [2024-10-11 14:35:30,700 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 108 flow. Second operand 5 states and 108 transitions. [2024-10-11 14:35:30,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 290 flow [2024-10-11 14:35:30,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 282 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:35:30,702 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 132 flow [2024-10-11 14:35:30,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2024-10-11 14:35:30,703 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-10-11 14:35:30,703 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 132 flow [2024-10-11 14:35:30,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:30,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:30,704 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:30,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:35:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:30,905 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)] === [2024-10-11 14:35:30,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash -390013963, now seen corresponding path program 1 times [2024-10-11 14:35:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189482451] [2024-10-11 14:35:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:30,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189482451] [2024-10-11 14:35:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189482451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:35:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602361454] [2024-10-11 14:35:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:31,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:31,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:35:31,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:35:31,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:31,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:31,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:35:31,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:31,267 INFO L124 PetriNetUnfolderBase]: 1256/2247 cut-off events. [2024-10-11 14:35:31,267 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-10-11 14:35:31,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 2247 events. 1256/2247 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12920 event pairs, 666 based on Foata normal form. 116/2238 useless extension candidates. Maximal degree in co-relation 3015. Up to 848 conditions per place. [2024-10-11 14:35:31,277 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 59 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-10-11 14:35:31,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 358 flow [2024-10-11 14:35:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:35:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:35:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-10-11 14:35:31,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:35:31,280 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 132 flow. Second operand 6 states and 133 transitions. [2024-10-11 14:35:31,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 358 flow [2024-10-11 14:35:31,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 354 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:35:31,282 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 158 flow [2024-10-11 14:35:31,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-10-11 14:35:31,283 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-10-11 14:35:31,283 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 158 flow [2024-10-11 14:35:31,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:31,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:31,284 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] [2024-10-11 14:35:31,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:35:31,284 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)] === [2024-10-11 14:35:31,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash -974159390, now seen corresponding path program 1 times [2024-10-11 14:35:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038285665] [2024-10-11 14:35:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038285665] [2024-10-11 14:35:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038285665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627481393] [2024-10-11 14:35:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:31,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:31,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:31,349 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:31,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:35:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:31,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:35:31,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:31,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:31,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627481393] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:31,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:35:31,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:35:31,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468088183] [2024-10-11 14:35:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:31,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:35:31,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:35:31,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:31,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:31,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:35:31,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:31,698 INFO L124 PetriNetUnfolderBase]: 1186/2167 cut-off events. [2024-10-11 14:35:31,698 INFO L125 PetriNetUnfolderBase]: For 1021/1021 co-relation queries the response was YES. [2024-10-11 14:35:31,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 2167 events. 1186/2167 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12683 event pairs, 585 based on Foata normal form. 108/2151 useless extension candidates. Maximal degree in co-relation 2797. Up to 640 conditions per place. [2024-10-11 14:35:31,707 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 60 selfloop transitions, 5 changer transitions 4/77 dead transitions. [2024-10-11 14:35:31,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 392 flow [2024-10-11 14:35:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:35:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:35:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-11 14:35:31,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-10-11 14:35:31,709 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 158 flow. Second operand 5 states and 120 transitions. [2024-10-11 14:35:31,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 392 flow [2024-10-11 14:35:31,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 381 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 14:35:31,712 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 171 flow [2024-10-11 14:35:31,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-10-11 14:35:31,712 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2024-10-11 14:35:31,713 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 171 flow [2024-10-11 14:35:31,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:31,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:31,713 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] [2024-10-11 14:35:31,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:35:31,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:31,918 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)] === [2024-10-11 14:35:31,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1965376524, now seen corresponding path program 1 times [2024-10-11 14:35:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586688264] [2024-10-11 14:35:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:31,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:31,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586688264] [2024-10-11 14:35:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586688264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:31,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493570050] [2024-10-11 14:35:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:31,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:31,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:31,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:31,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:35:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:32,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:35:32,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:32,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:35:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493570050] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:32,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:35:32,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:35:32,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860125557] [2024-10-11 14:35:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:32,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:35:32,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-11 14:35:32,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:32,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:32,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-11 14:35:32,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:32,338 INFO L124 PetriNetUnfolderBase]: 1287/2180 cut-off events. [2024-10-11 14:35:32,338 INFO L125 PetriNetUnfolderBase]: For 2727/2727 co-relation queries the response was YES. [2024-10-11 14:35:32,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 2180 events. 1287/2180 cut-off events. For 2727/2727 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11489 event pairs, 492 based on Foata normal form. 0/1983 useless extension candidates. Maximal degree in co-relation 3095. Up to 547 conditions per place. [2024-10-11 14:35:32,347 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-10-11 14:35:32,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 469 flow [2024-10-11 14:35:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:35:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:35:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-10-11 14:35:32,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-10-11 14:35:32,348 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 171 flow. Second operand 6 states and 134 transitions. [2024-10-11 14:35:32,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 469 flow [2024-10-11 14:35:32,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 430 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-11 14:35:32,350 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 183 flow [2024-10-11 14:35:32,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-10-11 14:35:32,351 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2024-10-11 14:35:32,351 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 183 flow [2024-10-11 14:35:32,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:32,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:32,352 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] [2024-10-11 14:35:32,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:35:32,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:32,556 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)] === [2024-10-11 14:35:32,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1556998358, now seen corresponding path program 1 times [2024-10-11 14:35:32,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252907992] [2024-10-11 14:35:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:35:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:32,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252907992] [2024-10-11 14:35:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252907992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:32,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:32,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:35:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851579179] [2024-10-11 14:35:32,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:32,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:35:32,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-11 14:35:32,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:32,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:32,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-11 14:35:32,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:32,757 INFO L124 PetriNetUnfolderBase]: 849/1393 cut-off events. [2024-10-11 14:35:32,758 INFO L125 PetriNetUnfolderBase]: For 1433/1433 co-relation queries the response was YES. [2024-10-11 14:35:32,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 1393 events. 849/1393 cut-off events. For 1433/1433 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6295 event pairs, 563 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 2832. Up to 895 conditions per place. [2024-10-11 14:35:32,763 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 26 selfloop transitions, 4 changer transitions 29/67 dead transitions. [2024-10-11 14:35:32,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 361 flow [2024-10-11 14:35:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:35:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:35:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-10-11 14:35:32,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-10-11 14:35:32,764 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 183 flow. Second operand 6 states and 118 transitions. [2024-10-11 14:35:32,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 361 flow [2024-10-11 14:35:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:35:32,766 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 153 flow [2024-10-11 14:35:32,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2024-10-11 14:35:32,767 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-10-11 14:35:32,767 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 153 flow [2024-10-11 14:35:32,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:32,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:32,768 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] [2024-10-11 14:35:32,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:35:32,768 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)] === [2024-10-11 14:35:32,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:32,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1948083429, now seen corresponding path program 1 times [2024-10-11 14:35:32,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357004008] [2024-10-11 14:35:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:32,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357004008] [2024-10-11 14:35:32,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357004008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68715667] [2024-10-11 14:35:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:32,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:32,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:32,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:35:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:32,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:35:32,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:32,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68715667] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:32,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:35:32,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-11 14:35:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539013558] [2024-10-11 14:35:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:32,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:35:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:35:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:35:33,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-11 14:35:33,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:33,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:33,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-11 14:35:33,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:33,171 INFO L124 PetriNetUnfolderBase]: 749/1251 cut-off events. [2024-10-11 14:35:33,171 INFO L125 PetriNetUnfolderBase]: For 1444/1444 co-relation queries the response was YES. [2024-10-11 14:35:33,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1251 events. 749/1251 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5861 event pairs, 299 based on Foata normal form. 46/1203 useless extension candidates. Maximal degree in co-relation 3394. Up to 535 conditions per place. [2024-10-11 14:35:33,178 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 37 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-10-11 14:35:33,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 291 flow [2024-10-11 14:35:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:35:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:35:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-10-11 14:35:33,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-10-11 14:35:33,180 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 153 flow. Second operand 5 states and 90 transitions. [2024-10-11 14:35:33,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 291 flow [2024-10-11 14:35:33,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 251 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-10-11 14:35:33,185 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 146 flow [2024-10-11 14:35:33,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-10-11 14:35:33,186 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-10-11 14:35:33,187 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 146 flow [2024-10-11 14:35:33,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:33,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:33,188 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] [2024-10-11 14:35:33,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:35:33,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 14:35:33,392 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)] === [2024-10-11 14:35:33,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:33,392 INFO L85 PathProgramCache]: Analyzing trace with hash -765935750, now seen corresponding path program 1 times [2024-10-11 14:35:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597915452] [2024-10-11 14:35:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 14:35:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597915452] [2024-10-11 14:35:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597915452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:35:33,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:35:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:35:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148045937] [2024-10-11 14:35:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:35:33,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:35:33,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:35:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:35:33,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-11 14:35:33,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:33,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:33,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-11 14:35:33,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:33,944 INFO L124 PetriNetUnfolderBase]: 1734/2631 cut-off events. [2024-10-11 14:35:33,945 INFO L125 PetriNetUnfolderBase]: For 1653/1653 co-relation queries the response was YES. [2024-10-11 14:35:33,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6987 conditions, 2631 events. 1734/2631 cut-off events. For 1653/1653 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11207 event pairs, 258 based on Foata normal form. 0/2588 useless extension candidates. Maximal degree in co-relation 6961. Up to 1170 conditions per place. [2024-10-11 14:35:33,958 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 94 selfloop transitions, 18 changer transitions 6/123 dead transitions. [2024-10-11 14:35:33,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 123 transitions, 667 flow [2024-10-11 14:35:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:35:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:35:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-10-11 14:35:33,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-10-11 14:35:33,960 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 146 flow. Second operand 9 states and 165 transitions. [2024-10-11 14:35:33,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 123 transitions, 667 flow [2024-10-11 14:35:33,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 123 transitions, 659 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:35:33,966 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 286 flow [2024-10-11 14:35:33,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-10-11 14:35:33,967 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-10-11 14:35:33,968 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 286 flow [2024-10-11 14:35:33,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:33,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:33,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:33,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:35:33,969 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)] === [2024-10-11 14:35:33,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1880103711, now seen corresponding path program 2 times [2024-10-11 14:35:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012320831] [2024-10-11 14:35:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:34,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012320831] [2024-10-11 14:35:34,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012320831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841276882] [2024-10-11 14:35:34,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:35:34,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:34,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:34,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:34,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:35:34,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:35:34,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:34,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:34,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:34,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:35:34,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841276882] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:34,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:34,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:35:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41273825] [2024-10-11 14:35:34,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:34,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:35:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:35:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:35:34,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-11 14:35:34,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 286 flow. Second operand has 14 states, 14 states have (on average 13.214285714285714) internal successors, (185), 14 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:34,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:34,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-11 14:35:34,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:34,615 INFO L124 PetriNetUnfolderBase]: 1586/2829 cut-off events. [2024-10-11 14:35:34,615 INFO L125 PetriNetUnfolderBase]: For 3973/4045 co-relation queries the response was YES. [2024-10-11 14:35:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8677 conditions, 2829 events. 1586/2829 cut-off events. For 3973/4045 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14883 event pairs, 891 based on Foata normal form. 34/2825 useless extension candidates. Maximal degree in co-relation 6504. Up to 1561 conditions per place. [2024-10-11 14:35:34,627 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 35 selfloop transitions, 6 changer transitions 47/105 dead transitions. [2024-10-11 14:35:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 680 flow [2024-10-11 14:35:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:35:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:35:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-10-11 14:35:34,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-10-11 14:35:34,629 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 286 flow. Second operand 10 states and 172 transitions. [2024-10-11 14:35:34,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 680 flow [2024-10-11 14:35:34,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:35:34,638 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 338 flow [2024-10-11 14:35:34,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-10-11 14:35:34,638 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2024-10-11 14:35:34,639 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 338 flow [2024-10-11 14:35:34,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.214285714285714) internal successors, (185), 14 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:34,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:34,639 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:34,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 14:35:34,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:34,844 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)] === [2024-10-11 14:35:34,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash -717560674, now seen corresponding path program 3 times [2024-10-11 14:35:34,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:34,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125112102] [2024-10-11 14:35:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:35:34,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125112102] [2024-10-11 14:35:34,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125112102] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:34,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312750943] [2024-10-11 14:35:34,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:35:34,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:34,945 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:34,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:35:35,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:35:35,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:35,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:35,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:35:35,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 14:35:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312750943] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:35,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:35:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584018182] [2024-10-11 14:35:35,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:35,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:35:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:35,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:35:35,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:35:35,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:35:35,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 338 flow. Second operand has 14 states, 14 states have (on average 14.0) internal successors, (196), 14 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:35,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:35,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:35:35,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:35,385 INFO L124 PetriNetUnfolderBase]: 1204/2088 cut-off events. [2024-10-11 14:35:35,385 INFO L125 PetriNetUnfolderBase]: For 3099/3241 co-relation queries the response was YES. [2024-10-11 14:35:35,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6774 conditions, 2088 events. 1204/2088 cut-off events. For 3099/3241 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10754 event pairs, 362 based on Foata normal form. 114/2164 useless extension candidates. Maximal degree in co-relation 6726. Up to 974 conditions per place. [2024-10-11 14:35:35,399 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2024-10-11 14:35:35,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 772 flow [2024-10-11 14:35:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:35:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:35:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-10-11 14:35:35,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-10-11 14:35:35,402 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 338 flow. Second operand 9 states and 157 transitions. [2024-10-11 14:35:35,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 772 flow [2024-10-11 14:35:35,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 714 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-10-11 14:35:35,409 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 338 flow [2024-10-11 14:35:35,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=338, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-10-11 14:35:35,410 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2024-10-11 14:35:35,410 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 338 flow [2024-10-11 14:35:35,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.0) internal successors, (196), 14 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:35,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:35,410 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:35,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 14:35:35,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 14:35:35,615 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)] === [2024-10-11 14:35:35,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash 992805200, now seen corresponding path program 4 times [2024-10-11 14:35:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126151239] [2024-10-11 14:35:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 14:35:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126151239] [2024-10-11 14:35:35,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126151239] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941610559] [2024-10-11 14:35:35,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:35:35,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:35,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:35,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:35,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:35:35,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:35:35,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:35,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:35:35,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:35:35,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:35:35,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941610559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:35,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-10-11 14:35:35,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914893487] [2024-10-11 14:35:35,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:35,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:35:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:35:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:35:35,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-10-11 14:35:35,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 338 flow. Second operand has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:35,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:35,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-10-11 14:35:35,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:36,492 INFO L124 PetriNetUnfolderBase]: 2671/4544 cut-off events. [2024-10-11 14:35:36,493 INFO L125 PetriNetUnfolderBase]: For 8578/8666 co-relation queries the response was YES. [2024-10-11 14:35:36,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15424 conditions, 4544 events. 2671/4544 cut-off events. For 8578/8666 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 23711 event pairs, 203 based on Foata normal form. 89/4578 useless extension candidates. Maximal degree in co-relation 15378. Up to 745 conditions per place. [2024-10-11 14:35:36,516 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 124 selfloop transitions, 29 changer transitions 0/168 dead transitions. [2024-10-11 14:35:36,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 168 transitions, 1212 flow [2024-10-11 14:35:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:35:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:35:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 269 transitions. [2024-10-11 14:35:36,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44243421052631576 [2024-10-11 14:35:36,517 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 338 flow. Second operand 16 states and 269 transitions. [2024-10-11 14:35:36,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 168 transitions, 1212 flow [2024-10-11 14:35:36,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 168 transitions, 1120 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-10-11 14:35:36,529 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 468 flow [2024-10-11 14:35:36,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=468, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-10-11 14:35:36,529 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2024-10-11 14:35:36,529 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 468 flow [2024-10-11 14:35:36,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:36,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:36,530 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:36,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 14:35:36,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:36,733 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)] === [2024-10-11 14:35:36,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1696608905, now seen corresponding path program 5 times [2024-10-11 14:35:36,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:36,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304535441] [2024-10-11 14:35:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304535441] [2024-10-11 14:35:36,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304535441] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177632638] [2024-10-11 14:35:36,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:35:36,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:36,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:36,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:36,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:35:37,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:35:37,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:37,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:37,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:37,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:37,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177632638] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:37,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:37,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 14:35:37,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516010547] [2024-10-11 14:35:37,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:37,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 14:35:37,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:37,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 14:35:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:35:37,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-11 14:35:37,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 468 flow. Second operand has 17 states, 17 states have (on average 9.764705882352942) internal successors, (166), 17 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:37,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:37,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-11 14:35:37,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:39,449 INFO L124 PetriNetUnfolderBase]: 10159/15091 cut-off events. [2024-10-11 14:35:39,449 INFO L125 PetriNetUnfolderBase]: For 28542/28597 co-relation queries the response was YES. [2024-10-11 14:35:39,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53378 conditions, 15091 events. 10159/15091 cut-off events. For 28542/28597 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 79896 event pairs, 1811 based on Foata normal form. 325/15406 useless extension candidates. Maximal degree in co-relation 53328. Up to 4104 conditions per place. [2024-10-11 14:35:39,591 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 421 selfloop transitions, 109 changer transitions 47/584 dead transitions. [2024-10-11 14:35:39,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 584 transitions, 4251 flow [2024-10-11 14:35:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-11 14:35:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-10-11 14:35:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 706 transitions. [2024-10-11 14:35:39,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4320685434516524 [2024-10-11 14:35:39,597 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 468 flow. Second operand 43 states and 706 transitions. [2024-10-11 14:35:39,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 584 transitions, 4251 flow [2024-10-11 14:35:39,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 584 transitions, 4223 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-11 14:35:39,669 INFO L231 Difference]: Finished difference. Result has 143 places, 186 transitions, 1667 flow [2024-10-11 14:35:39,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1667, PETRI_PLACES=143, PETRI_TRANSITIONS=186} [2024-10-11 14:35:39,671 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 105 predicate places. [2024-10-11 14:35:39,672 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 186 transitions, 1667 flow [2024-10-11 14:35:39,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.764705882352942) internal successors, (166), 17 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:39,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:39,672 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:39,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:35:39,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:35:39,873 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:39,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -330863139, now seen corresponding path program 6 times [2024-10-11 14:35:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:39,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967389256] [2024-10-11 14:35:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:40,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967389256] [2024-10-11 14:35:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967389256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713147010] [2024-10-11 14:35:40,127 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:35:40,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:40,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:40,130 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:40,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:35:40,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:35:40,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:40,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:40,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:40,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713147010] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:40,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:40,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-11 14:35:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361026680] [2024-10-11 14:35:40,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:40,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:35:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:35:40,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:35:40,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-11 14:35:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 186 transitions, 1667 flow. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:40,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:40,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-11 14:35:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:44,082 INFO L124 PetriNetUnfolderBase]: 16438/24365 cut-off events. [2024-10-11 14:35:44,083 INFO L125 PetriNetUnfolderBase]: For 126247/126335 co-relation queries the response was YES. [2024-10-11 14:35:44,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106800 conditions, 24365 events. 16438/24365 cut-off events. For 126247/126335 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 136993 event pairs, 2750 based on Foata normal form. 269/24618 useless extension candidates. Maximal degree in co-relation 106732. Up to 7041 conditions per place. [2024-10-11 14:35:44,320 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 499 selfloop transitions, 195 changer transitions 18/719 dead transitions. [2024-10-11 14:35:44,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 719 transitions, 6623 flow [2024-10-11 14:35:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-11 14:35:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-10-11 14:35:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 702 transitions. [2024-10-11 14:35:44,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-10-11 14:35:44,324 INFO L175 Difference]: Start difference. First operand has 143 places, 186 transitions, 1667 flow. Second operand 42 states and 702 transitions. [2024-10-11 14:35:44,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 719 transitions, 6623 flow [2024-10-11 14:35:44,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 719 transitions, 6373 flow, removed 125 selfloop flow, removed 1 redundant places. [2024-10-11 14:35:44,805 INFO L231 Difference]: Finished difference. Result has 205 places, 300 transitions, 3326 flow [2024-10-11 14:35:44,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3326, PETRI_PLACES=205, PETRI_TRANSITIONS=300} [2024-10-11 14:35:44,807 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 167 predicate places. [2024-10-11 14:35:44,807 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 300 transitions, 3326 flow [2024-10-11 14:35:44,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 16 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:44,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:44,807 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:44,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 14:35:45,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:45,012 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:45,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1728558207, now seen corresponding path program 7 times [2024-10-11 14:35:45,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399675332] [2024-10-11 14:35:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:45,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399675332] [2024-10-11 14:35:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399675332] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341229805] [2024-10-11 14:35:45,210 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:35:45,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:45,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:45,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:45,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:35:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:45,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:35:45,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:45,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:35:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341229805] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:45,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:45,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 14:35:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851207] [2024-10-11 14:35:45,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:45,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:35:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:35:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:35:45,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 38 [2024-10-11 14:35:45,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 300 transitions, 3326 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:45,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:45,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 38 [2024-10-11 14:35:45,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:49,616 INFO L124 PetriNetUnfolderBase]: 17491/26068 cut-off events. [2024-10-11 14:35:49,617 INFO L125 PetriNetUnfolderBase]: For 243253/243605 co-relation queries the response was YES. [2024-10-11 14:35:49,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131066 conditions, 26068 events. 17491/26068 cut-off events. For 243253/243605 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 150328 event pairs, 1156 based on Foata normal form. 200/26236 useless extension candidates. Maximal degree in co-relation 130974. Up to 10579 conditions per place. [2024-10-11 14:35:49,858 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 372 selfloop transitions, 199 changer transitions 10/588 dead transitions. [2024-10-11 14:35:49,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 588 transitions, 6547 flow [2024-10-11 14:35:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 14:35:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 14:35:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 414 transitions. [2024-10-11 14:35:49,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4357894736842105 [2024-10-11 14:35:49,860 INFO L175 Difference]: Start difference. First operand has 205 places, 300 transitions, 3326 flow. Second operand 25 states and 414 transitions. [2024-10-11 14:35:49,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 588 transitions, 6547 flow [2024-10-11 14:35:50,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 588 transitions, 6302 flow, removed 75 selfloop flow, removed 18 redundant places. [2024-10-11 14:35:50,742 INFO L231 Difference]: Finished difference. Result has 223 places, 350 transitions, 4430 flow [2024-10-11 14:35:50,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4430, PETRI_PLACES=223, PETRI_TRANSITIONS=350} [2024-10-11 14:35:50,743 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 185 predicate places. [2024-10-11 14:35:50,743 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 350 transitions, 4430 flow [2024-10-11 14:35:50,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:50,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:50,744 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:50,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 14:35:50,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 14:35:50,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:50,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:50,948 INFO L85 PathProgramCache]: Analyzing trace with hash 82382412, now seen corresponding path program 8 times [2024-10-11 14:35:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565601880] [2024-10-11 14:35:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:35:51,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565601880] [2024-10-11 14:35:51,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565601880] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827326498] [2024-10-11 14:35:51,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:35:51,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:51,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:51,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:35:51,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:35:51,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:51,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:35:51,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:35:51,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 14:35:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827326498] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:51,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-11 14:35:51,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018686740] [2024-10-11 14:35:51,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:51,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:35:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:51,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:35:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:35:51,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-11 14:35:51,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 350 transitions, 4430 flow. Second operand has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 19 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:51,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:51,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-11 14:35:51,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:35:55,529 INFO L124 PetriNetUnfolderBase]: 14466/25370 cut-off events. [2024-10-11 14:35:55,530 INFO L125 PetriNetUnfolderBase]: For 218485/219090 co-relation queries the response was YES. [2024-10-11 14:35:56,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131388 conditions, 25370 events. 14466/25370 cut-off events. For 218485/219090 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 186971 event pairs, 7554 based on Foata normal form. 473/25558 useless extension candidates. Maximal degree in co-relation 130687. Up to 13591 conditions per place. [2024-10-11 14:35:56,103 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 131 selfloop transitions, 8 changer transitions 114/466 dead transitions. [2024-10-11 14:35:56,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 466 transitions, 6148 flow [2024-10-11 14:35:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:35:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:35:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-10-11 14:35:56,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-10-11 14:35:56,105 INFO L175 Difference]: Start difference. First operand has 223 places, 350 transitions, 4430 flow. Second operand 13 states and 221 transitions. [2024-10-11 14:35:56,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 466 transitions, 6148 flow [2024-10-11 14:35:57,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 466 transitions, 6019 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-10-11 14:35:57,939 INFO L231 Difference]: Finished difference. Result has 239 places, 352 transitions, 4454 flow [2024-10-11 14:35:57,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4454, PETRI_PLACES=239, PETRI_TRANSITIONS=352} [2024-10-11 14:35:57,940 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 201 predicate places. [2024-10-11 14:35:57,940 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 352 transitions, 4454 flow [2024-10-11 14:35:57,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 19 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:57,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:35:57,941 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:35:57,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 14:35:58,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 14:35:58,142 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:35:58,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:35:58,142 INFO L85 PathProgramCache]: Analyzing trace with hash -604886955, now seen corresponding path program 9 times [2024-10-11 14:35:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:35:58,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435527336] [2024-10-11 14:35:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:35:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:35:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:35:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 14:35:58,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:35:58,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435527336] [2024-10-11 14:35:58,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435527336] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:35:58,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090387208] [2024-10-11 14:35:58,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:35:58,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:35:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:35:58,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:35:58,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:35:58,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:35:58,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:35:58,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 14:35:58,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:35:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 14:35:58,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:35:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-11 14:35:58,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090387208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:35:58,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:35:58,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-10-11 14:35:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278873870] [2024-10-11 14:35:58,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:35:58,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:35:58,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:35:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:35:58,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:35:58,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 38 [2024-10-11 14:35:58,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 352 transitions, 4454 flow. Second operand has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:35:58,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:35:58,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 38 [2024-10-11 14:35:58,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:06,088 INFO L124 PetriNetUnfolderBase]: 29000/40629 cut-off events. [2024-10-11 14:36:06,088 INFO L125 PetriNetUnfolderBase]: For 332788/332788 co-relation queries the response was YES. [2024-10-11 14:36:06,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210732 conditions, 40629 events. 29000/40629 cut-off events. For 332788/332788 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 210883 event pairs, 974 based on Foata normal form. 2178/42807 useless extension candidates. Maximal degree in co-relation 210615. Up to 7688 conditions per place. [2024-10-11 14:36:06,529 INFO L140 encePairwiseOnDemand]: 20/38 looper letters, 0 selfloop transitions, 0 changer transitions 2213/2213 dead transitions. [2024-10-11 14:36:06,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 2213 transitions, 31428 flow [2024-10-11 14:36:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-10-11 14:36:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-10-11 14:36:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 844 transitions. [2024-10-11 14:36:06,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3084795321637427 [2024-10-11 14:36:06,533 INFO L175 Difference]: Start difference. First operand has 239 places, 352 transitions, 4454 flow. Second operand 72 states and 844 transitions. [2024-10-11 14:36:06,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 2213 transitions, 31428 flow [2024-10-11 14:36:09,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 2213 transitions, 30550 flow, removed 279 selfloop flow, removed 12 redundant places. [2024-10-11 14:36:09,303 INFO L231 Difference]: Finished difference. Result has 286 places, 0 transitions, 0 flow [2024-10-11 14:36:09,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=0, PETRI_PLACES=286, PETRI_TRANSITIONS=0} [2024-10-11 14:36:09,303 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 248 predicate places. [2024-10-11 14:36:09,304 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 0 transitions, 0 flow [2024-10-11 14:36:09,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 15 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:09,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-11 14:36:09,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-11 14:36:09,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-11 14:36:09,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-11 14:36:09,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:09,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 14:36:09,511 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:09,514 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:36:09,514 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:36:09,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:36:09 BasicIcfg [2024-10-11 14:36:09,517 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:36:09,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:36:09,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:36:09,518 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:36:09,518 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:35:28" (3/4) ... [2024-10-11 14:36:09,520 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:36:09,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-11 14:36:09,523 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-11 14:36:09,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-11 14:36:09,527 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 106 nodes and edges [2024-10-11 14:36:09,527 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-10-11 14:36:09,528 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-11 14:36:09,528 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 14:36:09,617 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:36:09,617 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:36:09,618 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:36:09,618 INFO L158 Benchmark]: Toolchain (without parser) took 41793.82ms. Allocated memory was 169.9MB in the beginning and 12.8GB in the end (delta: 12.7GB). Free memory was 99.6MB in the beginning and 10.7GB in the end (delta: -10.6GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2024-10-11 14:36:09,618 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 169.9MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:36:09,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.55ms. Allocated memory was 169.9MB in the beginning and 260.0MB in the end (delta: 90.2MB). Free memory was 99.3MB in the beginning and 229.7MB in the end (delta: -130.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-10-11 14:36:09,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.33ms. Allocated memory is still 260.0MB. Free memory was 229.7MB in the beginning and 227.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:36:09,619 INFO L158 Benchmark]: Boogie Preprocessor took 35.58ms. Allocated memory is still 260.0MB. Free memory was 227.6MB in the beginning and 224.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:36:09,620 INFO L158 Benchmark]: RCFGBuilder took 592.85ms. Allocated memory is still 260.0MB. Free memory was 224.4MB in the beginning and 181.4MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-10-11 14:36:09,620 INFO L158 Benchmark]: TraceAbstraction took 40728.75ms. Allocated memory was 260.0MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 180.4MB in the beginning and 10.7GB in the end (delta: -10.5GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2024-10-11 14:36:09,620 INFO L158 Benchmark]: Witness Printer took 99.83ms. Allocated memory is still 12.8GB. Free memory was 10.7GB in the beginning and 10.7GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:36:09,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 169.9MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.55ms. Allocated memory was 169.9MB in the beginning and 260.0MB in the end (delta: 90.2MB). Free memory was 99.3MB in the beginning and 229.7MB in the end (delta: -130.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.33ms. Allocated memory is still 260.0MB. Free memory was 229.7MB in the beginning and 227.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.58ms. Allocated memory is still 260.0MB. Free memory was 227.6MB in the beginning and 224.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 592.85ms. Allocated memory is still 260.0MB. Free memory was 224.4MB in the beginning and 181.4MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 40728.75ms. Allocated memory was 260.0MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 180.4MB in the beginning and 10.7GB in the end (delta: -10.5GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Witness Printer took 99.83ms. Allocated memory is still 12.8GB. Free memory was 10.7GB in the beginning and 10.7GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 53 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 40.6s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 32.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2136 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2078 mSDsluCounter, 609 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 560 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7153 IncrementalHoareTripleChecker+Invalid, 7264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 49 mSDtfsCounter, 7153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1278 GetRequests, 934 SyntacticMatches, 26 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3793 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4454occurred in iteration=15, InterpolantAutomatonStates: 276, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 998 NumberOfCodeBlocks, 961 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1407 ConstructedInterpolants, 0 QuantifiedInterpolants, 4167 SizeOfPredicates, 37 NumberOfNonLiveVariables, 2615 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 40 InterpolantComputations, 8 PerfectInterpolantSequences, 447/574 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:36:09,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE