./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:33:12,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:33:12,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:33:12,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:33:12,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:33:12,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:33:12,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:33:12,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:33:12,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:33:12,852 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:33:12,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:33:12,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:33:12,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:33:12,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:33:12,853 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:33:12,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:33:12,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:33:12,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:33:12,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:33:12,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:33:12,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:33:12,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:33:12,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:33:12,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:33:12,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:33:12,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:33:12,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:33:12,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:33:12,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:33:12,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:33:12,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:33:12,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:33:12,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:33:12,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:33:12,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:33:12,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:33:12,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:33:12,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:33:12,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:33:12,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:33:12,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:33:12,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:33:12,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:33:12,862 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2024-06-27 16:33:13,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:33:13,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:33:13,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:33:13,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:33:13,088 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:33:13,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-06-27 16:33:14,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:33:14,355 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:33:14,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-06-27 16:33:14,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f56ff9b/2c83648e9e914ac49ae42e54c525e9a6/FLAG0882729bc [2024-06-27 16:33:14,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43f56ff9b/2c83648e9e914ac49ae42e54c525e9a6 [2024-06-27 16:33:14,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:33:14,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:33:14,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:33:14,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:33:14,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:33:14,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188a6df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14, skipping insertion in model container [2024-06-27 16:33:14,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:33:14,580 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2024-06-27 16:33:14,592 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:33:14,598 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:33:14,632 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2024-06-27 16:33:14,636 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:33:14,651 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:33:14,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14 WrapperNode [2024-06-27 16:33:14,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:33:14,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:33:14,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:33:14,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:33:14,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,708 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 267 [2024-06-27 16:33:14,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:33:14,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:33:14,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:33:14,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:33:14,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,755 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-06-27 16:33:14,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,775 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:33:14,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:33:14,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:33:14,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:33:14,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (1/1) ... [2024-06-27 16:33:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:33:14,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:14,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 16:33:14,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:33:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:33:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:33:14,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:33:14,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:33:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:33:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:33:14,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:33:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:33:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:33:14,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:33:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:33:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:33:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:33:14,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:33:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:33:14,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:33:14,842 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:33:14,919 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:33:14,920 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:33:15,193 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:33:15,193 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:33:15,527 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:33:15,527 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 16:33:15,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:15 BoogieIcfgContainer [2024-06-27 16:33:15,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:33:15,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:33:15,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:33:15,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:33:15,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:33:14" (1/3) ... [2024-06-27 16:33:15,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1157576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:33:15, skipping insertion in model container [2024-06-27 16:33:15,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:14" (2/3) ... [2024-06-27 16:33:15,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1157576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:33:15, skipping insertion in model container [2024-06-27 16:33:15,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:15" (3/3) ... [2024-06-27 16:33:15,537 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-06-27 16:33:15,543 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:33:15,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:33:15,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:33:15,549 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:33:15,586 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:33:15,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-06-27 16:33:15,665 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-06-27 16:33:15,665 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:33:15,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-06-27 16:33:15,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-06-27 16:33:15,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-06-27 16:33:15,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:33:15,690 INFO L357 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, mHoare=true, 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;@58bed4d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:33:15,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:33:15,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:33:15,709 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-06-27 16:33:15,709 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:33:15,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:15,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:15,711 INFO L420 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)] === [2024-06-27 16:33:15,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1325247194, now seen corresponding path program 1 times [2024-06-27 16:33:15,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:15,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167830897] [2024-06-27 16:33:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:15,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:16,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:16,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167830897] [2024-06-27 16:33:16,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167830897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:16,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:33:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971370933] [2024-06-27 16:33:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:16,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:33:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:16,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:33:16,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:33:16,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:16,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 16:33:16,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:16,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:16,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:16,170 INFO L124 PetriNetUnfolderBase]: 202/302 cut-off events. [2024-06-27 16:33:16,170 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-06-27 16:33:16,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 302 events. 202/302 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 694 event pairs, 124 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 534. Up to 299 conditions per place. [2024-06-27 16:33:16,174 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-06-27 16:33:16,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 136 flow [2024-06-27 16:33:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:33:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:33:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-06-27 16:33:16,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-27 16:33:16,187 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 44 transitions. [2024-06-27 16:33:16,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 136 flow [2024-06-27 16:33:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:33:16,192 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 92 flow [2024-06-27 16:33:16,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-06-27 16:33:16,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-06-27 16:33:16,197 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 92 flow [2024-06-27 16:33:16,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 16:33:16,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:16,197 INFO L208 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] [2024-06-27 16:33:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:33:16,201 INFO L420 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)] === [2024-06-27 16:33:16,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1674808808, now seen corresponding path program 1 times [2024-06-27 16:33:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435647559] [2024-06-27 16:33:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:33:16,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:16,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435647559] [2024-06-27 16:33:16,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435647559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:16,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:16,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:33:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487673150] [2024-06-27 16:33:16,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:16,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:33:16,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:33:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:33:16,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:16,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:33:16,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:16,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:16,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:16,497 INFO L124 PetriNetUnfolderBase]: 306/451 cut-off events. [2024-06-27 16:33:16,498 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-06-27 16:33:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 451 events. 306/451 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1207 event pairs, 124 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 900. Up to 302 conditions per place. [2024-06-27 16:33:16,500 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 37 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2024-06-27 16:33:16,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 201 flow [2024-06-27 16:33:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:33:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:33:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-27 16:33:16,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-27 16:33:16,502 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 92 flow. Second operand 3 states and 51 transitions. [2024-06-27 16:33:16,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 201 flow [2024-06-27 16:33:16,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:33:16,503 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 98 flow [2024-06-27 16:33:16,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2024-06-27 16:33:16,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2024-06-27 16:33:16,504 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 98 flow [2024-06-27 16:33:16,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:33:16,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:16,505 INFO L208 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] [2024-06-27 16:33:16,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:33:16,505 INFO L420 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)] === [2024-06-27 16:33:16,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 278082362, now seen corresponding path program 1 times [2024-06-27 16:33:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987348347] [2024-06-27 16:33:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:33:16,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987348347] [2024-06-27 16:33:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987348347] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801064557] [2024-06-27 16:33:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:16,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:16,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:16,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:16,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:33:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:16,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:33:16,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:33:16,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 16:33:16,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801064557] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:16,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-06-27 16:33:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675887991] [2024-06-27 16:33:16,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:16,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:33:16,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:16,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:33:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:33:16,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:16,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-06-27 16:33:16,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:16,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:16,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:16,932 INFO L124 PetriNetUnfolderBase]: 306/460 cut-off events. [2024-06-27 16:33:16,933 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-06-27 16:33:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 460 events. 306/460 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1191 event pairs, 202 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 983. Up to 448 conditions per place. [2024-06-27 16:33:16,935 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2024-06-27 16:33:16,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 212 flow [2024-06-27 16:33:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 16:33:16,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 16:33:16,936 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 98 flow. Second operand 6 states and 71 transitions. [2024-06-27 16:33:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 212 flow [2024-06-27 16:33:16,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:33:16,938 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 192 flow [2024-06-27 16:33:16,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-06-27 16:33:16,939 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-06-27 16:33:16,939 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 192 flow [2024-06-27 16:33:16,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-06-27 16:33:16,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:16,940 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:16,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:17,154 INFO L420 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)] === [2024-06-27 16:33:17,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2130876906, now seen corresponding path program 2 times [2024-06-27 16:33:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673542713] [2024-06-27 16:33:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-06-27 16:33:17,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:17,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673542713] [2024-06-27 16:33:17,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673542713] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:17,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386775698] [2024-06-27 16:33:17,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:33:17,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:17,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:17,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:17,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:33:17,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 16:33:17,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:17,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:33:17,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-06-27 16:33:17,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:33:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386775698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:17,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:33:17,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-06-27 16:33:17,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668540896] [2024-06-27 16:33:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:17,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:17,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:33:17,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:17,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-06-27 16:33:17,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:17,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:17,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:17,629 INFO L124 PetriNetUnfolderBase]: 502/756 cut-off events. [2024-06-27 16:33:17,629 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-06-27 16:33:17,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 756 events. 502/756 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2523 event pairs, 202 based on Foata normal form. 17/625 useless extension candidates. Maximal degree in co-relation 1615. Up to 459 conditions per place. [2024-06-27 16:33:17,632 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 62 selfloop transitions, 4 changer transitions 2/69 dead transitions. [2024-06-27 16:33:17,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 407 flow [2024-06-27 16:33:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:33:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:33:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-27 16:33:17,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-27 16:33:17,633 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 192 flow. Second operand 5 states and 74 transitions. [2024-06-27 16:33:17,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 407 flow [2024-06-27 16:33:17,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 69 transitions, 383 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 16:33:17,635 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 190 flow [2024-06-27 16:33:17,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-06-27 16:33:17,636 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 16:33:17,636 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 190 flow [2024-06-27 16:33:17,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-06-27 16:33:17,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:17,637 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:17,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-06-27 16:33:17,852 INFO L420 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)] === [2024-06-27 16:33:17,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 714235528, now seen corresponding path program 3 times [2024-06-27 16:33:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711403531] [2024-06-27 16:33:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-06-27 16:33:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711403531] [2024-06-27 16:33:17,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711403531] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510733062] [2024-06-27 16:33:17,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:33:17,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:17,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:17,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:33:18,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-27 16:33:18,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:18,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:33:18,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-06-27 16:33:18,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:33:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510733062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:33:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-06-27 16:33:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526918490] [2024-06-27 16:33:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 16:33:18,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:18,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-06-27 16:33:18,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:18,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:18,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:18,252 INFO L124 PetriNetUnfolderBase]: 560/838 cut-off events. [2024-06-27 16:33:18,252 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2024-06-27 16:33:18,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 838 events. 560/838 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2948 event pairs, 97 based on Foata normal form. 24/740 useless extension candidates. Maximal degree in co-relation 2160. Up to 567 conditions per place. [2024-06-27 16:33:18,255 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 58 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2024-06-27 16:33:18,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 396 flow [2024-06-27 16:33:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:33:18,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:33:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-06-27 16:33:18,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 16:33:18,257 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 190 flow. Second operand 5 states and 66 transitions. [2024-06-27 16:33:18,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 396 flow [2024-06-27 16:33:18,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 65 transitions, 383 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 16:33:18,259 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 213 flow [2024-06-27 16:33:18,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-06-27 16:33:18,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-27 16:33:18,259 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 213 flow [2024-06-27 16:33:18,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-06-27 16:33:18,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:18,260 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:18,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-06-27 16:33:18,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:18,471 INFO L420 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)] === [2024-06-27 16:33:18,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:18,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1415160308, now seen corresponding path program 4 times [2024-06-27 16:33:18,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:18,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645081531] [2024-06-27 16:33:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:18,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-06-27 16:33:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645081531] [2024-06-27 16:33:18,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645081531] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270802291] [2024-06-27 16:33:18,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:33:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:18,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:18,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:33:18,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:33:18,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:18,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 16:33:18,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-06-27 16:33:18,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-06-27 16:33:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270802291] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:18,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-06-27 16:33:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818620647] [2024-06-27 16:33:18,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:18,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 16:33:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 16:33:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-06-27 16:33:18,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:18,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 213 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:18,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:18,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:18,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:19,124 INFO L124 PetriNetUnfolderBase]: 560/841 cut-off events. [2024-06-27 16:33:19,124 INFO L125 PetriNetUnfolderBase]: For 911/911 co-relation queries the response was YES. [2024-06-27 16:33:19,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 841 events. 560/841 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2700 event pairs, 371 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 2277. Up to 825 conditions per place. [2024-06-27 16:33:19,128 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 28 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-06-27 16:33:19,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 323 flow [2024-06-27 16:33:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:33:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:33:19,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 16:33:19,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-27 16:33:19,130 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 213 flow. Second operand 7 states and 72 transitions. [2024-06-27 16:33:19,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 323 flow [2024-06-27 16:33:19,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:33:19,132 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 278 flow [2024-06-27 16:33:19,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-06-27 16:33:19,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-27 16:33:19,133 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 278 flow [2024-06-27 16:33:19,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:19,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:19,134 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:19,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:19,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:19,348 INFO L420 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)] === [2024-06-27 16:33:19,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash 63332276, now seen corresponding path program 5 times [2024-06-27 16:33:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:19,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949677611] [2024-06-27 16:33:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:19,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949677611] [2024-06-27 16:33:19,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949677611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:19,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:19,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:19,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105921132] [2024-06-27 16:33:19,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:19,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:19,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:19,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:19,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:19,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:19,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-06-27 16:33:19,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:19,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:19,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:19,740 INFO L124 PetriNetUnfolderBase]: 477/715 cut-off events. [2024-06-27 16:33:19,741 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2024-06-27 16:33:19,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 715 events. 477/715 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2316 event pairs, 178 based on Foata normal form. 24/636 useless extension candidates. Maximal degree in co-relation 1935. Up to 486 conditions per place. [2024-06-27 16:33:19,744 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 60 selfloop transitions, 7 changer transitions 2/70 dead transitions. [2024-06-27 16:33:19,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 484 flow [2024-06-27 16:33:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:33:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:33:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-06-27 16:33:19,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 16:33:19,745 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 278 flow. Second operand 5 states and 70 transitions. [2024-06-27 16:33:19,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 484 flow [2024-06-27 16:33:19,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 448 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 16:33:19,748 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 265 flow [2024-06-27 16:33:19,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-06-27 16:33:19,748 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-27 16:33:19,749 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 265 flow [2024-06-27 16:33:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-06-27 16:33:19,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:19,749 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:33:19,749 INFO L420 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)] === [2024-06-27 16:33:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1443504837, now seen corresponding path program 1 times [2024-06-27 16:33:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518235071] [2024-06-27 16:33:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:19,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:19,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:19,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518235071] [2024-06-27 16:33:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518235071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:33:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071667296] [2024-06-27 16:33:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:19,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:33:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:33:19,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:33:19,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:19,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:19,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:19,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:19,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:20,201 INFO L124 PetriNetUnfolderBase]: 790/1173 cut-off events. [2024-06-27 16:33:20,201 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2024-06-27 16:33:20,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3516 conditions, 1173 events. 790/1173 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4362 event pairs, 255 based on Foata normal form. 12/989 useless extension candidates. Maximal degree in co-relation 3416. Up to 683 conditions per place. [2024-06-27 16:33:20,206 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 70 selfloop transitions, 5 changer transitions 13/89 dead transitions. [2024-06-27 16:33:20,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 618 flow [2024-06-27 16:33:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-27 16:33:20,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 16:33:20,207 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 265 flow. Second operand 6 states and 84 transitions. [2024-06-27 16:33:20,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 618 flow [2024-06-27 16:33:20,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 576 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 16:33:20,211 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 274 flow [2024-06-27 16:33:20,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 16:33:20,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-27 16:33:20,213 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 274 flow [2024-06-27 16:33:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:20,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:20,214 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:33:20,214 INFO L420 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)] === [2024-06-27 16:33:20,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash -67177765, now seen corresponding path program 2 times [2024-06-27 16:33:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363562623] [2024-06-27 16:33:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:20,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363562623] [2024-06-27 16:33:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363562623] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145637872] [2024-06-27 16:33:20,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:33:20,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:20,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:20,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:20,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 16:33:20,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:33:20,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:20,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 16:33:20,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:20,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:20,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145637872] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:20,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:33:20,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2024-06-27 16:33:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281520979] [2024-06-27 16:33:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 16:33:20,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:20,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:33:20,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:20,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:20,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:20,915 INFO L124 PetriNetUnfolderBase]: 810/1190 cut-off events. [2024-06-27 16:33:20,915 INFO L125 PetriNetUnfolderBase]: For 1765/1765 co-relation queries the response was YES. [2024-06-27 16:33:20,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 1190 events. 810/1190 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4208 event pairs, 119 based on Foata normal form. 22/1081 useless extension candidates. Maximal degree in co-relation 3745. Up to 458 conditions per place. [2024-06-27 16:33:20,921 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 83 selfloop transitions, 7 changer transitions 3/94 dead transitions. [2024-06-27 16:33:20,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 94 transitions, 675 flow [2024-06-27 16:33:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:33:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:33:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-27 16:33:20,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-06-27 16:33:20,922 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 274 flow. Second operand 5 states and 76 transitions. [2024-06-27 16:33:20,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 94 transitions, 675 flow [2024-06-27 16:33:20,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 653 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 16:33:20,925 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 315 flow [2024-06-27 16:33:20,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-27 16:33:20,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-27 16:33:20,926 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 315 flow [2024-06-27 16:33:20,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:33:20,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:20,926 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:20,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:21,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:21,128 INFO L420 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)] === [2024-06-27 16:33:21,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1443242203, now seen corresponding path program 3 times [2024-06-27 16:33:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008142437] [2024-06-27 16:33:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:21,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:21,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008142437] [2024-06-27 16:33:21,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008142437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:21,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:21,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:33:21,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308795589] [2024-06-27 16:33:21,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:21,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:33:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:33:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:33:21,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:21,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:21,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:21,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:21,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:21,630 INFO L124 PetriNetUnfolderBase]: 1006/1482 cut-off events. [2024-06-27 16:33:21,631 INFO L125 PetriNetUnfolderBase]: For 2650/2650 co-relation queries the response was YES. [2024-06-27 16:33:21,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 1482 events. 1006/1482 cut-off events. For 2650/2650 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5742 event pairs, 273 based on Foata normal form. 24/1359 useless extension candidates. Maximal degree in co-relation 4782. Up to 749 conditions per place. [2024-06-27 16:33:21,637 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 81 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2024-06-27 16:33:21,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 663 flow [2024-06-27 16:33:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-27 16:33:21,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 16:33:21,638 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 315 flow. Second operand 6 states and 84 transitions. [2024-06-27 16:33:21,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 663 flow [2024-06-27 16:33:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 654 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:33:21,642 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 367 flow [2024-06-27 16:33:21,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-06-27 16:33:21,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 16:33:21,643 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 367 flow [2024-06-27 16:33:21,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:21,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:21,643 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:21,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:33:21,643 INFO L420 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)] === [2024-06-27 16:33:21,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1644126713, now seen corresponding path program 4 times [2024-06-27 16:33:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:21,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136774152] [2024-06-27 16:33:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:21,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136774152] [2024-06-27 16:33:21,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136774152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:21,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:21,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:33:21,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991192479] [2024-06-27 16:33:21,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:21,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:33:21,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:33:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:33:21,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:21,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:21,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:21,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:21,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:22,143 INFO L124 PetriNetUnfolderBase]: 982/1458 cut-off events. [2024-06-27 16:33:22,143 INFO L125 PetriNetUnfolderBase]: For 3871/3871 co-relation queries the response was YES. [2024-06-27 16:33:22,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 1458 events. 982/1458 cut-off events. For 3871/3871 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5592 event pairs, 135 based on Foata normal form. 24/1335 useless extension candidates. Maximal degree in co-relation 5295. Up to 803 conditions per place. [2024-06-27 16:33:22,151 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 81 selfloop transitions, 10 changer transitions 1/93 dead transitions. [2024-06-27 16:33:22,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 739 flow [2024-06-27 16:33:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-27 16:33:22,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 16:33:22,152 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 367 flow. Second operand 6 states and 78 transitions. [2024-06-27 16:33:22,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 739 flow [2024-06-27 16:33:22,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 723 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:33:22,157 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 431 flow [2024-06-27 16:33:22,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=431, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-06-27 16:33:22,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-27 16:33:22,158 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 431 flow [2024-06-27 16:33:22,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:22,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:22,158 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:22,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:33:22,159 INFO L420 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)] === [2024-06-27 16:33:22,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:22,159 INFO L85 PathProgramCache]: Analyzing trace with hash -449378853, now seen corresponding path program 5 times [2024-06-27 16:33:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:22,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515473706] [2024-06-27 16:33:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:22,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515473706] [2024-06-27 16:33:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515473706] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450097252] [2024-06-27 16:33:22,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:33:22,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:22,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:22,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:22,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 16:33:22,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 16:33:22,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:22,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 17 conjunts are in the unsatisfiable core [2024-06-27 16:33:22,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:23,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450097252] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:23,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:33:23,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 9] total 16 [2024-06-27 16:33:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91675851] [2024-06-27 16:33:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:33:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:23,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:33:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:33:23,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:23,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:23,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:23,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:23,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:23,518 INFO L124 PetriNetUnfolderBase]: 1166/1733 cut-off events. [2024-06-27 16:33:23,519 INFO L125 PetriNetUnfolderBase]: For 5742/5742 co-relation queries the response was YES. [2024-06-27 16:33:23,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 1733 events. 1166/1733 cut-off events. For 5742/5742 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7218 event pairs, 202 based on Foata normal form. 1/1551 useless extension candidates. Maximal degree in co-relation 6566. Up to 1186 conditions per place. [2024-06-27 16:33:23,527 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 90 selfloop transitions, 25 changer transitions 8/124 dead transitions. [2024-06-27 16:33:23,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 1059 flow [2024-06-27 16:33:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 16:33:23,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-27 16:33:23,529 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 431 flow. Second operand 6 states and 99 transitions. [2024-06-27 16:33:23,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 1059 flow [2024-06-27 16:33:23,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 1012 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 16:33:23,536 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 675 flow [2024-06-27 16:33:23,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=675, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-27 16:33:23,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-27 16:33:23,536 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 675 flow [2024-06-27 16:33:23,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:23,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:23,537 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:23,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:23,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:23,750 INFO L420 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)] === [2024-06-27 16:33:23,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:23,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1069968409, now seen corresponding path program 6 times [2024-06-27 16:33:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:23,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794177269] [2024-06-27 16:33:23,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:23,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794177269] [2024-06-27 16:33:23,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794177269] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806757081] [2024-06-27 16:33:23,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:33:23,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:23,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:23,993 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:24,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 16:33:24,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-06-27 16:33:24,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:24,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 16:33:24,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:24,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:24,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806757081] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:24,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:33:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2024-06-27 16:33:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545271634] [2024-06-27 16:33:24,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:24,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 16:33:24,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:24,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:33:24,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:24,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:24,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:24,507 INFO L124 PetriNetUnfolderBase]: 1180/1737 cut-off events. [2024-06-27 16:33:24,508 INFO L125 PetriNetUnfolderBase]: For 8338/8338 co-relation queries the response was YES. [2024-06-27 16:33:24,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7506 conditions, 1737 events. 1180/1737 cut-off events. For 8338/8338 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6956 event pairs, 139 based on Foata normal form. 32/1704 useless extension candidates. Maximal degree in co-relation 7393. Up to 1025 conditions per place. [2024-06-27 16:33:24,517 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 92 selfloop transitions, 21 changer transitions 3/117 dead transitions. [2024-06-27 16:33:24,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 1165 flow [2024-06-27 16:33:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:33:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:33:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-27 16:33:24,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2024-06-27 16:33:24,518 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 675 flow. Second operand 5 states and 75 transitions. [2024-06-27 16:33:24,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 1165 flow [2024-06-27 16:33:24,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 1151 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-27 16:33:24,526 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 786 flow [2024-06-27 16:33:24,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-06-27 16:33:24,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-27 16:33:24,526 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 786 flow [2024-06-27 16:33:24,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:33:24,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:24,527 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:24,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:24,739 INFO L420 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)] === [2024-06-27 16:33:24,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash -192725693, now seen corresponding path program 7 times [2024-06-27 16:33:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:24,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764931671] [2024-06-27 16:33:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:24,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:33:24,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:24,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764931671] [2024-06-27 16:33:24,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764931671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:24,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:24,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:33:24,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719554728] [2024-06-27 16:33:24,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:24,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:33:24,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:24,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:33:24,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:33:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:24,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:24,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:24,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:25,213 INFO L124 PetriNetUnfolderBase]: 1052/1531 cut-off events. [2024-06-27 16:33:25,214 INFO L125 PetriNetUnfolderBase]: For 8958/8958 co-relation queries the response was YES. [2024-06-27 16:33:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7005 conditions, 1531 events. 1052/1531 cut-off events. For 8958/8958 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5801 event pairs, 257 based on Foata normal form. 32/1498 useless extension candidates. Maximal degree in co-relation 6889. Up to 840 conditions per place. [2024-06-27 16:33:25,229 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 76 selfloop transitions, 28 changer transitions 4/109 dead transitions. [2024-06-27 16:33:25,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 1135 flow [2024-06-27 16:33:25,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-27 16:33:25,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 16:33:25,230 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 786 flow. Second operand 6 states and 81 transitions. [2024-06-27 16:33:25,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 1135 flow [2024-06-27 16:33:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 1041 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 16:33:25,242 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 752 flow [2024-06-27 16:33:25,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2024-06-27 16:33:25,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-27 16:33:25,242 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 752 flow [2024-06-27 16:33:25,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:25,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:25,243 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:25,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 16:33:25,243 INFO L420 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)] === [2024-06-27 16:33:25,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash -492929667, now seen corresponding path program 1 times [2024-06-27 16:33:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647404639] [2024-06-27 16:33:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647404639] [2024-06-27 16:33:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647404639] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370673354] [2024-06-27 16:33:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:26,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:26,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:26,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:26,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 16:33:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:26,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:33:26,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:26,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:33:26,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:33:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:26,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:26,894 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:33:26,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:33:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370673354] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:26,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2024-06-27 16:33:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962492633] [2024-06-27 16:33:26,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-06-27 16:33:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-06-27 16:33:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-06-27 16:33:26,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:26,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 752 flow. Second operand has 30 states, 30 states have (on average 6.266666666666667) internal successors, (188), 30 states have internal predecessors, (188), 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) [2024-06-27 16:33:26,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:26,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:26,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:28,407 INFO L124 PetriNetUnfolderBase]: 2142/3114 cut-off events. [2024-06-27 16:33:28,407 INFO L125 PetriNetUnfolderBase]: For 15499/15499 co-relation queries the response was YES. [2024-06-27 16:33:28,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13453 conditions, 3114 events. 2142/3114 cut-off events. For 15499/15499 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 14056 event pairs, 233 based on Foata normal form. 1/2934 useless extension candidates. Maximal degree in co-relation 13339. Up to 1151 conditions per place. [2024-06-27 16:33:28,425 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 169 selfloop transitions, 96 changer transitions 14/280 dead transitions. [2024-06-27 16:33:28,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 280 transitions, 2765 flow [2024-06-27 16:33:28,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 16:33:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 16:33:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 252 transitions. [2024-06-27 16:33:28,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 16:33:28,427 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 752 flow. Second operand 20 states and 252 transitions. [2024-06-27 16:33:28,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 280 transitions, 2765 flow [2024-06-27 16:33:28,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 280 transitions, 2545 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 16:33:28,451 INFO L231 Difference]: Finished difference. Result has 97 places, 167 transitions, 1830 flow [2024-06-27 16:33:28,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1830, PETRI_PLACES=97, PETRI_TRANSITIONS=167} [2024-06-27 16:33:28,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 16:33:28,453 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 167 transitions, 1830 flow [2024-06-27 16:33:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.266666666666667) internal successors, (188), 30 states have internal predecessors, (188), 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) [2024-06-27 16:33:28,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:28,453 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:28,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:28,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-06-27 16:33:28,666 INFO L420 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)] === [2024-06-27 16:33:28,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1029541545, now seen corresponding path program 2 times [2024-06-27 16:33:28,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:28,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015194157] [2024-06-27 16:33:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:28,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015194157] [2024-06-27 16:33:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015194157] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030704981] [2024-06-27 16:33:29,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:33:29,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:29,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:29,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 16:33:29,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:33:29,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:29,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:33:29,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:29,915 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:33:29,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-06-27 16:33:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:29,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:30,347 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:33:30,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:33:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:30,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030704981] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:30,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:30,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2024-06-27 16:33:30,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36874977] [2024-06-27 16:33:30,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:30,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:33:30,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:33:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-06-27 16:33:30,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:30,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 167 transitions, 1830 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:33:30,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:30,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:30,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:32,243 INFO L124 PetriNetUnfolderBase]: 2433/3535 cut-off events. [2024-06-27 16:33:32,243 INFO L125 PetriNetUnfolderBase]: For 19678/19678 co-relation queries the response was YES. [2024-06-27 16:33:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17200 conditions, 3535 events. 2433/3535 cut-off events. For 19678/19678 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 16359 event pairs, 287 based on Foata normal form. 1/3514 useless extension candidates. Maximal degree in co-relation 17079. Up to 1179 conditions per place. [2024-06-27 16:33:32,289 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 177 selfloop transitions, 116 changer transitions 62/356 dead transitions. [2024-06-27 16:33:32,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 356 transitions, 3812 flow [2024-06-27 16:33:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-06-27 16:33:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-06-27 16:33:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 298 transitions. [2024-06-27 16:33:32,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-27 16:33:32,291 INFO L175 Difference]: Start difference. First operand has 97 places, 167 transitions, 1830 flow. Second operand 24 states and 298 transitions. [2024-06-27 16:33:32,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 356 transitions, 3812 flow [2024-06-27 16:33:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 356 transitions, 3627 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-06-27 16:33:32,342 INFO L231 Difference]: Finished difference. Result has 129 places, 194 transitions, 2298 flow [2024-06-27 16:33:32,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2298, PETRI_PLACES=129, PETRI_TRANSITIONS=194} [2024-06-27 16:33:32,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-27 16:33:32,343 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 194 transitions, 2298 flow [2024-06-27 16:33:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:33:32,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:32,344 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:32,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-27 16:33:32,556 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:32,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1831362211, now seen corresponding path program 3 times [2024-06-27 16:33:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:32,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223585544] [2024-06-27 16:33:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:33,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:33,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223585544] [2024-06-27 16:33:33,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223585544] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949730033] [2024-06-27 16:33:33,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:33:33,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:33,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:33,365 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:33,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-27 16:33:33,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 16:33:33,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:33,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:33:33,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:33,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:33:33,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-06-27 16:33:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:33,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:34,182 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:33:34,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:33:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949730033] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:34,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:34,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2024-06-27 16:33:34,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722431432] [2024-06-27 16:33:34,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:34,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:33:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:34,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:33:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2024-06-27 16:33:34,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:34,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 194 transitions, 2298 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:33:34,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:34,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:34,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:36,216 INFO L124 PetriNetUnfolderBase]: 2276/3322 cut-off events. [2024-06-27 16:33:36,216 INFO L125 PetriNetUnfolderBase]: For 37078/37078 co-relation queries the response was YES. [2024-06-27 16:33:36,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21549 conditions, 3322 events. 2276/3322 cut-off events. For 37078/37078 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 15128 event pairs, 343 based on Foata normal form. 5/3327 useless extension candidates. Maximal degree in co-relation 21417. Up to 1193 conditions per place. [2024-06-27 16:33:36,237 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 189 selfloop transitions, 126 changer transitions 11/327 dead transitions. [2024-06-27 16:33:36,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 327 transitions, 3953 flow [2024-06-27 16:33:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 16:33:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 16:33:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 278 transitions. [2024-06-27 16:33:36,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3899018232819074 [2024-06-27 16:33:36,239 INFO L175 Difference]: Start difference. First operand has 129 places, 194 transitions, 2298 flow. Second operand 23 states and 278 transitions. [2024-06-27 16:33:36,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 327 transitions, 3953 flow [2024-06-27 16:33:36,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 327 transitions, 3787 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 16:33:36,310 INFO L231 Difference]: Finished difference. Result has 147 places, 215 transitions, 2701 flow [2024-06-27 16:33:36,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2701, PETRI_PLACES=147, PETRI_TRANSITIONS=215} [2024-06-27 16:33:36,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-27 16:33:36,311 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 215 transitions, 2701 flow [2024-06-27 16:33:36,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:33:36,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:36,312 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:36,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:36,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-06-27 16:33:36,523 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:36,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1423314789, now seen corresponding path program 4 times [2024-06-27 16:33:36,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:36,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347080165] [2024-06-27 16:33:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347080165] [2024-06-27 16:33:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347080165] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543993055] [2024-06-27 16:33:37,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:33:37,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:37,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:37,344 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:37,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-27 16:33:37,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:33:37,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:37,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:33:37,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:37,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:33:37,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:33:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:37,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:37,975 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:33:37,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:33:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543993055] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:38,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:38,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 30 [2024-06-27 16:33:38,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158163768] [2024-06-27 16:33:38,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:38,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-06-27 16:33:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-06-27 16:33:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2024-06-27 16:33:38,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:38,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 215 transitions, 2701 flow. Second operand has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:38,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:38,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:38,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:42,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-06-27 16:33:43,972 INFO L124 PetriNetUnfolderBase]: 2290/3348 cut-off events. [2024-06-27 16:33:43,972 INFO L125 PetriNetUnfolderBase]: For 53008/53008 co-relation queries the response was YES. [2024-06-27 16:33:43,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24117 conditions, 3348 events. 2290/3348 cut-off events. For 53008/53008 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 15292 event pairs, 377 based on Foata normal form. 1/3338 useless extension candidates. Maximal degree in co-relation 23978. Up to 1199 conditions per place. [2024-06-27 16:33:43,996 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 124 changer transitions 3/317 dead transitions. [2024-06-27 16:33:43,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 317 transitions, 4173 flow [2024-06-27 16:33:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-27 16:33:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-27 16:33:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 248 transitions. [2024-06-27 16:33:43,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 16:33:43,999 INFO L175 Difference]: Start difference. First operand has 147 places, 215 transitions, 2701 flow. Second operand 21 states and 248 transitions. [2024-06-27 16:33:43,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 317 transitions, 4173 flow [2024-06-27 16:33:44,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 317 transitions, 3906 flow, removed 53 selfloop flow, removed 14 redundant places. [2024-06-27 16:33:44,095 INFO L231 Difference]: Finished difference. Result has 154 places, 217 transitions, 2715 flow [2024-06-27 16:33:44,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2715, PETRI_PLACES=154, PETRI_TRANSITIONS=217} [2024-06-27 16:33:44,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-27 16:33:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 217 transitions, 2715 flow [2024-06-27 16:33:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.133333333333334) internal successors, (184), 30 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:33:44,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:44,096 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:33:44,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-06-27 16:33:44,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-06-27 16:33:44,308 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:44,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 920365107, now seen corresponding path program 5 times [2024-06-27 16:33:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241041450] [2024-06-27 16:33:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241041450] [2024-06-27 16:33:45,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241041450] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:33:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223472455] [2024-06-27 16:33:45,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:33:45,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:33:45,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:45,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:33:45,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-06-27 16:33:45,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 16:33:45,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:33:45,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 28 conjunts are in the unsatisfiable core [2024-06-27 16:33:45,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:33:45,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:33:45,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:33:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:45,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:33:46,221 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:33:46,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 212 [2024-06-27 16:33:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:33:58,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223472455] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:33:58,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:33:58,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 9] total 32 [2024-06-27 16:33:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427019610] [2024-06-27 16:33:58,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:33:58,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-06-27 16:33:58,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-06-27 16:33:58,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2024-06-27 16:33:58,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:33:58,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 217 transitions, 2715 flow. Second operand has 32 states, 32 states have (on average 6.375) internal successors, (204), 32 states have internal predecessors, (204), 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) [2024-06-27 16:33:58,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:58,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:33:58,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:01,267 INFO L124 PetriNetUnfolderBase]: 3297/4767 cut-off events. [2024-06-27 16:34:01,268 INFO L125 PetriNetUnfolderBase]: For 82233/82233 co-relation queries the response was YES. [2024-06-27 16:34:01,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35044 conditions, 4767 events. 3297/4767 cut-off events. For 82233/82233 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 23055 event pairs, 413 based on Foata normal form. 1/4768 useless extension candidates. Maximal degree in co-relation 34904. Up to 2886 conditions per place. [2024-06-27 16:34:01,298 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 166 changer transitions 40/450 dead transitions. [2024-06-27 16:34:01,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 450 transitions, 6199 flow [2024-06-27 16:34:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-27 16:34:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-27 16:34:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 336 transitions. [2024-06-27 16:34:01,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 16:34:01,304 INFO L175 Difference]: Start difference. First operand has 154 places, 217 transitions, 2715 flow. Second operand 28 states and 336 transitions. [2024-06-27 16:34:01,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 450 transitions, 6199 flow [2024-06-27 16:34:01,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 450 transitions, 5922 flow, removed 18 selfloop flow, removed 18 redundant places. [2024-06-27 16:34:01,464 INFO L231 Difference]: Finished difference. Result has 177 places, 297 transitions, 4185 flow [2024-06-27 16:34:01,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4185, PETRI_PLACES=177, PETRI_TRANSITIONS=297} [2024-06-27 16:34:01,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-27 16:34:01,466 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 297 transitions, 4185 flow [2024-06-27 16:34:01,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.375) internal successors, (204), 32 states have internal predecessors, (204), 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) [2024-06-27 16:34:01,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:01,466 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:34:01,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-06-27 16:34:01,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:01,679 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:34:01,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1764544779, now seen corresponding path program 6 times [2024-06-27 16:34:01,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:01,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849187045] [2024-06-27 16:34:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:02,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:02,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849187045] [2024-06-27 16:34:02,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849187045] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:02,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601824492] [2024-06-27 16:34:02,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:34:02,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:02,339 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:34:02,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-06-27 16:34:02,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-06-27 16:34:02,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:34:02,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:34:02,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:02,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:34:02,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-06-27 16:34:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:02,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:03,351 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:34:03,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:34:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601824492] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:03,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:03,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2024-06-27 16:34:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436114086] [2024-06-27 16:34:03,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:03,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:34:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:34:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-06-27 16:34:03,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:34:03,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 297 transitions, 4185 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:34:03,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:03,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:34:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:05,278 INFO L124 PetriNetUnfolderBase]: 3093/4505 cut-off events. [2024-06-27 16:34:05,278 INFO L125 PetriNetUnfolderBase]: For 151757/151757 co-relation queries the response was YES. [2024-06-27 16:34:05,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38545 conditions, 4505 events. 3093/4505 cut-off events. For 151757/151757 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 21931 event pairs, 513 based on Foata normal form. 1/4506 useless extension candidates. Maximal degree in co-relation 38391. Up to 2034 conditions per place. [2024-06-27 16:34:05,309 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 248 selfloop transitions, 146 changer transitions 1/396 dead transitions. [2024-06-27 16:34:05,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 396 transitions, 5972 flow [2024-06-27 16:34:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 16:34:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 16:34:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 236 transitions. [2024-06-27 16:34:05,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 16:34:05,311 INFO L175 Difference]: Start difference. First operand has 177 places, 297 transitions, 4185 flow. Second operand 20 states and 236 transitions. [2024-06-27 16:34:05,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 396 transitions, 5972 flow [2024-06-27 16:34:05,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 396 transitions, 5600 flow, removed 118 selfloop flow, removed 9 redundant places. [2024-06-27 16:34:05,631 INFO L231 Difference]: Finished difference. Result has 190 places, 310 transitions, 4441 flow [2024-06-27 16:34:05,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4441, PETRI_PLACES=190, PETRI_TRANSITIONS=310} [2024-06-27 16:34:05,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-27 16:34:05,632 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 310 transitions, 4441 flow [2024-06-27 16:34:05,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:34:05,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:05,632 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:34:05,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-06-27 16:34:05,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-06-27 16:34:05,844 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:34:05,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1957258819, now seen corresponding path program 7 times [2024-06-27 16:34:05,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:05,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738411337] [2024-06-27 16:34:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:05,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:06,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738411337] [2024-06-27 16:34:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738411337] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766886028] [2024-06-27 16:34:06,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:34:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:06,429 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:34:06,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-06-27 16:34:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:06,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:34:06,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:06,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:34:06,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:34:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:06,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:11,167 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:34:11,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:34:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:11,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766886028] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:11,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:11,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 27 [2024-06-27 16:34:11,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789025610] [2024-06-27 16:34:11,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:11,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-06-27 16:34:11,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-06-27 16:34:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=599, Unknown=1, NotChecked=0, Total=702 [2024-06-27 16:34:11,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:34:11,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 310 transitions, 4441 flow. Second operand has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 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) [2024-06-27 16:34:11,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:11,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:34:11,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:15,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-06-27 16:34:16,970 INFO L124 PetriNetUnfolderBase]: 3143/4578 cut-off events. [2024-06-27 16:34:16,970 INFO L125 PetriNetUnfolderBase]: For 171074/171074 co-relation queries the response was YES. [2024-06-27 16:34:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40077 conditions, 4578 events. 3143/4578 cut-off events. For 171074/171074 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 22338 event pairs, 565 based on Foata normal form. 1/4579 useless extension candidates. Maximal degree in co-relation 39919. Up to 2107 conditions per place. [2024-06-27 16:34:17,000 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 134 changer transitions 1/384 dead transitions. [2024-06-27 16:34:17,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 384 transitions, 5919 flow [2024-06-27 16:34:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 16:34:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 16:34:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 188 transitions. [2024-06-27 16:34:17,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 16:34:17,023 INFO L175 Difference]: Start difference. First operand has 190 places, 310 transitions, 4441 flow. Second operand 16 states and 188 transitions. [2024-06-27 16:34:17,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 384 transitions, 5919 flow [2024-06-27 16:34:17,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 384 transitions, 5487 flow, removed 102 selfloop flow, removed 15 redundant places. [2024-06-27 16:34:17,344 INFO L231 Difference]: Finished difference. Result has 191 places, 313 transitions, 4356 flow [2024-06-27 16:34:17,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4022, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4356, PETRI_PLACES=191, PETRI_TRANSITIONS=313} [2024-06-27 16:34:17,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-27 16:34:17,344 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 313 transitions, 4356 flow [2024-06-27 16:34:17,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 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) [2024-06-27 16:34:17,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:17,345 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:34:17,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-06-27 16:34:17,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:17,554 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:34:17,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1586902929, now seen corresponding path program 8 times [2024-06-27 16:34:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335328812] [2024-06-27 16:34:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:17,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:18,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:18,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335328812] [2024-06-27 16:34:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335328812] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:18,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906024484] [2024-06-27 16:34:18,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:34:18,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:18,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:18,205 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:34:18,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-06-27 16:34:18,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:34:18,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:34:18,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 34 conjunts are in the unsatisfiable core [2024-06-27 16:34:18,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:18,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:34:18,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-06-27 16:34:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:18,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:19,098 INFO L349 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2024-06-27 16:34:19,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2024-06-27 16:34:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:19,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906024484] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:19,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:19,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 29 [2024-06-27 16:34:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470324692] [2024-06-27 16:34:19,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:19,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:34:19,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:19,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:34:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2024-06-27 16:34:19,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:34:19,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 313 transitions, 4356 flow. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:34:19,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:19,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:34:19,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:21,831 INFO L124 PetriNetUnfolderBase]: 3353/4890 cut-off events. [2024-06-27 16:34:21,831 INFO L125 PetriNetUnfolderBase]: For 167200/167200 co-relation queries the response was YES. [2024-06-27 16:34:21,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42115 conditions, 4890 events. 3353/4890 cut-off events. For 167200/167200 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 24200 event pairs, 423 based on Foata normal form. 1/4891 useless extension candidates. Maximal degree in co-relation 41958. Up to 1733 conditions per place. [2024-06-27 16:34:21,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 276 selfloop transitions, 190 changer transitions 4/471 dead transitions. [2024-06-27 16:34:21,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 471 transitions, 6889 flow [2024-06-27 16:34:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-06-27 16:34:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-06-27 16:34:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 376 transitions. [2024-06-27 16:34:21,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3675464320625611 [2024-06-27 16:34:21,880 INFO L175 Difference]: Start difference. First operand has 191 places, 313 transitions, 4356 flow. Second operand 33 states and 376 transitions. [2024-06-27 16:34:21,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 471 transitions, 6889 flow [2024-06-27 16:34:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 471 transitions, 6669 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 16:34:22,342 INFO L231 Difference]: Finished difference. Result has 219 places, 333 transitions, 4909 flow [2024-06-27 16:34:22,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4139, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4909, PETRI_PLACES=219, PETRI_TRANSITIONS=333} [2024-06-27 16:34:22,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 16:34:22,343 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 333 transitions, 4909 flow [2024-06-27 16:34:22,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2024-06-27 16:34:22,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:22,343 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:34:22,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-06-27 16:34:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:22,556 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:34:22,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 366460393, now seen corresponding path program 9 times [2024-06-27 16:34:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441578504] [2024-06-27 16:34:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:23,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441578504] [2024-06-27 16:34:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441578504] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111047243] [2024-06-27 16:34:23,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:34:23,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:23,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:23,288 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:34:23,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-06-27 16:34:23,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 16:34:23,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:34:23,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:34:23,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:23,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:34:23,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 120 [2024-06-27 16:34:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:24,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:24,486 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:34:24,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:34:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:29,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111047243] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:29,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 28 [2024-06-27 16:34:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289567896] [2024-06-27 16:34:29,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:29,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-06-27 16:34:29,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-06-27 16:34:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-06-27 16:34:29,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:34:29,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 333 transitions, 4909 flow. Second operand has 28 states, 28 states have (on average 6.25) internal successors, (175), 28 states have internal predecessors, (175), 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) [2024-06-27 16:34:29,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:29,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:34:29,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:31,668 INFO L124 PetriNetUnfolderBase]: 4213/6256 cut-off events. [2024-06-27 16:34:31,668 INFO L125 PetriNetUnfolderBase]: For 239071/239071 co-relation queries the response was YES. [2024-06-27 16:34:31,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57586 conditions, 6256 events. 4213/6256 cut-off events. For 239071/239071 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 33788 event pairs, 707 based on Foata normal form. 3/6259 useless extension candidates. Maximal degree in co-relation 57422. Up to 4195 conditions per place. [2024-06-27 16:34:31,714 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 353 selfloop transitions, 177 changer transitions 4/535 dead transitions. [2024-06-27 16:34:31,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 535 transitions, 8760 flow [2024-06-27 16:34:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-27 16:34:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-27 16:34:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 309 transitions. [2024-06-27 16:34:31,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35599078341013823 [2024-06-27 16:34:31,718 INFO L175 Difference]: Start difference. First operand has 219 places, 333 transitions, 4909 flow. Second operand 28 states and 309 transitions. [2024-06-27 16:34:31,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 535 transitions, 8760 flow [2024-06-27 16:34:32,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 535 transitions, 8311 flow, removed 80 selfloop flow, removed 24 redundant places. [2024-06-27 16:34:32,194 INFO L231 Difference]: Finished difference. Result has 232 places, 406 transitions, 6323 flow [2024-06-27 16:34:32,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6323, PETRI_PLACES=232, PETRI_TRANSITIONS=406} [2024-06-27 16:34:32,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-27 16:34:32,194 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 406 transitions, 6323 flow [2024-06-27 16:34:32,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.25) internal successors, (175), 28 states have internal predecessors, (175), 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) [2024-06-27 16:34:32,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:32,195 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:34:32,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-06-27 16:34:32,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-06-27 16:34:32,408 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:34:32,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1558472761, now seen corresponding path program 10 times [2024-06-27 16:34:32,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:32,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030572597] [2024-06-27 16:34:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:33,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030572597] [2024-06-27 16:34:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030572597] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17067695] [2024-06-27 16:34:33,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:34:33,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:33,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:33,041 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:34:33,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-06-27 16:34:33,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:34:33,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:34:33,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:34:33,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:33,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:34:33,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:34:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:33,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:33,916 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:34:33,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:34:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:39,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17067695] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:39,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:39,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2024-06-27 16:34:39,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730665] [2024-06-27 16:34:39,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:39,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:34:39,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:39,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:34:39,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2024-06-27 16:34:39,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:34:39,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 406 transitions, 6323 flow. Second operand has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 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) [2024-06-27 16:34:39,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:39,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:34:39,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:43,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-06-27 16:34:47,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-06-27 16:34:49,522 INFO L124 PetriNetUnfolderBase]: 4448/6601 cut-off events. [2024-06-27 16:34:49,523 INFO L125 PetriNetUnfolderBase]: For 276251/276251 co-relation queries the response was YES. [2024-06-27 16:34:49,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64933 conditions, 6601 events. 4448/6601 cut-off events. For 276251/276251 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 35991 event pairs, 831 based on Foata normal form. 1/6602 useless extension candidates. Maximal degree in co-relation 64760. Up to 5415 conditions per place. [2024-06-27 16:34:49,580 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 326 selfloop transitions, 173 changer transitions 1/501 dead transitions. [2024-06-27 16:34:49,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 501 transitions, 8512 flow [2024-06-27 16:34:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-06-27 16:34:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-06-27 16:34:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 203 transitions. [2024-06-27 16:34:49,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36379928315412186 [2024-06-27 16:34:49,582 INFO L175 Difference]: Start difference. First operand has 232 places, 406 transitions, 6323 flow. Second operand 18 states and 203 transitions. [2024-06-27 16:34:49,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 501 transitions, 8512 flow [2024-06-27 16:34:50,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 501 transitions, 8248 flow, removed 112 selfloop flow, removed 7 redundant places. [2024-06-27 16:34:50,319 INFO L231 Difference]: Finished difference. Result has 248 places, 438 transitions, 7051 flow [2024-06-27 16:34:50,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6075, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7051, PETRI_PLACES=248, PETRI_TRANSITIONS=438} [2024-06-27 16:34:50,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-27 16:34:50,320 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 438 transitions, 7051 flow [2024-06-27 16:34:50,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 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) [2024-06-27 16:34:50,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:50,320 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:34:50,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-06-27 16:34:50,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:50,523 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:34:50,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash -410610139, now seen corresponding path program 11 times [2024-06-27 16:34:50,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:50,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930504160] [2024-06-27 16:34:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:50,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:51,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930504160] [2024-06-27 16:34:51,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930504160] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750345231] [2024-06-27 16:34:51,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:34:51,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:51,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:51,200 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:34:51,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-06-27 16:34:52,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 16:34:52,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:34:52,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:34:52,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:52,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:34:52,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2024-06-27 16:34:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:52,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:52,865 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:34:52,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:34:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:34:58,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750345231] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:58,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:58,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 30 [2024-06-27 16:34:58,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953919114] [2024-06-27 16:34:58,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-06-27 16:34:58,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:58,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-06-27 16:34:58,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-06-27 16:34:58,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:34:58,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 438 transitions, 7051 flow. Second operand has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:58,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:58,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:34:58,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:01,200 INFO L124 PetriNetUnfolderBase]: 4800/7130 cut-off events. [2024-06-27 16:35:01,200 INFO L125 PetriNetUnfolderBase]: For 301883/301883 co-relation queries the response was YES. [2024-06-27 16:35:01,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71605 conditions, 7130 events. 4800/7130 cut-off events. For 301883/301883 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 39520 event pairs, 873 based on Foata normal form. 1/7131 useless extension candidates. Maximal degree in co-relation 71426. Up to 5592 conditions per place. [2024-06-27 16:35:01,269 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 355 selfloop transitions, 170 changer transitions 1/527 dead transitions. [2024-06-27 16:35:01,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 527 transitions, 9401 flow [2024-06-27 16:35:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 16:35:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 16:35:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 192 transitions. [2024-06-27 16:35:01,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36432637571157495 [2024-06-27 16:35:01,271 INFO L175 Difference]: Start difference. First operand has 248 places, 438 transitions, 7051 flow. Second operand 17 states and 192 transitions. [2024-06-27 16:35:01,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 527 transitions, 9401 flow [2024-06-27 16:35:02,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 527 transitions, 9200 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-27 16:35:02,309 INFO L231 Difference]: Finished difference. Result has 260 places, 456 transitions, 7638 flow [2024-06-27 16:35:02,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6882, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7638, PETRI_PLACES=260, PETRI_TRANSITIONS=456} [2024-06-27 16:35:02,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-27 16:35:02,310 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 456 transitions, 7638 flow [2024-06-27 16:35:02,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.3) internal successors, (189), 30 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:02,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:02,310 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:35:02,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-06-27 16:35:02,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:35:02,516 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:02,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1377420093, now seen corresponding path program 12 times [2024-06-27 16:35:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:02,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077089955] [2024-06-27 16:35:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:35:03,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077089955] [2024-06-27 16:35:03,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077089955] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:35:03,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53638408] [2024-06-27 16:35:03,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:35:03,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:35:03,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:35:03,861 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:35:03,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-06-27 16:35:04,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-06-27 16:35:04,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:35:04,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 34 conjunts are in the unsatisfiable core [2024-06-27 16:35:04,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:35:04,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:35:04,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-06-27 16:35:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:04,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:35:05,163 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:35:05,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:35:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:12,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53638408] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:35:12,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:35:12,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 9] total 37 [2024-06-27 16:35:12,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426808487] [2024-06-27 16:35:12,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:35:12,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-06-27 16:35:12,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-06-27 16:35:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2024-06-27 16:35:12,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:35:12,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 456 transitions, 7638 flow. Second operand has 37 states, 37 states have (on average 6.027027027027027) internal successors, (223), 37 states have internal predecessors, (223), 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) [2024-06-27 16:35:12,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:12,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:35:12,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:16,353 INFO L124 PetriNetUnfolderBase]: 4913/7338 cut-off events. [2024-06-27 16:35:16,353 INFO L125 PetriNetUnfolderBase]: For 320094/320094 co-relation queries the response was YES. [2024-06-27 16:35:16,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74261 conditions, 7338 events. 4913/7338 cut-off events. For 320094/320094 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 40963 event pairs, 1006 based on Foata normal form. 6/7344 useless extension candidates. Maximal degree in co-relation 73974. Up to 5799 conditions per place. [2024-06-27 16:35:16,563 INFO L140 encePairwiseOnDemand]: 14/31 looper letters, 335 selfloop transitions, 222 changer transitions 3/561 dead transitions. [2024-06-27 16:35:16,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 561 transitions, 9995 flow [2024-06-27 16:35:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-06-27 16:35:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-06-27 16:35:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 316 transitions. [2024-06-27 16:35:16,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27550130775937226 [2024-06-27 16:35:16,565 INFO L175 Difference]: Start difference. First operand has 260 places, 456 transitions, 7638 flow. Second operand 37 states and 316 transitions. [2024-06-27 16:35:16,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 561 transitions, 9995 flow [2024-06-27 16:35:17,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 561 transitions, 9852 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 16:35:17,410 INFO L231 Difference]: Finished difference. Result has 293 places, 492 transitions, 8553 flow [2024-06-27 16:35:17,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=7501, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8553, PETRI_PLACES=293, PETRI_TRANSITIONS=492} [2024-06-27 16:35:17,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-27 16:35:17,411 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 492 transitions, 8553 flow [2024-06-27 16:35:17,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.027027027027027) internal successors, (223), 37 states have internal predecessors, (223), 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) [2024-06-27 16:35:17,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:17,412 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:35:17,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-06-27 16:35:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:35:17,624 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:17,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash -266920663, now seen corresponding path program 13 times [2024-06-27 16:35:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:17,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890571358] [2024-06-27 16:35:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:17,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:18,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890571358] [2024-06-27 16:35:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890571358] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:35:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008436509] [2024-06-27 16:35:18,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:35:18,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:35:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:35:18,322 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:35:18,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-06-27 16:35:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:18,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:35:18,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:35:18,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:35:18,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:35:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:18,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:35:23,324 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:35:23,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:35:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:30,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008436509] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:35:30,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:35:30,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2024-06-27 16:35:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157840329] [2024-06-27 16:35:30,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:35:30,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:35:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:35:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=709, Unknown=1, NotChecked=0, Total=812 [2024-06-27 16:35:30,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:35:30,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 492 transitions, 8553 flow. Second operand has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 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) [2024-06-27 16:35:30,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:30,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:35:30,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:33,521 INFO L124 PetriNetUnfolderBase]: 5063/7557 cut-off events. [2024-06-27 16:35:33,521 INFO L125 PetriNetUnfolderBase]: For 346172/346172 co-relation queries the response was YES. [2024-06-27 16:35:33,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79047 conditions, 7557 events. 5063/7557 cut-off events. For 346172/346172 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 42394 event pairs, 1027 based on Foata normal form. 3/7560 useless extension candidates. Maximal degree in co-relation 78841. Up to 6274 conditions per place. [2024-06-27 16:35:33,595 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 382 selfloop transitions, 191 changer transitions 4/578 dead transitions. [2024-06-27 16:35:33,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 578 transitions, 10837 flow [2024-06-27 16:35:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 16:35:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 16:35:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 224 transitions. [2024-06-27 16:35:33,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 16:35:33,596 INFO L175 Difference]: Start difference. First operand has 293 places, 492 transitions, 8553 flow. Second operand 20 states and 224 transitions. [2024-06-27 16:35:33,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 578 transitions, 10837 flow [2024-06-27 16:35:34,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 578 transitions, 10454 flow, removed 79 selfloop flow, removed 19 redundant places. [2024-06-27 16:35:34,625 INFO L231 Difference]: Finished difference. Result has 300 places, 512 transitions, 9134 flow [2024-06-27 16:35:34,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=8170, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9134, PETRI_PLACES=300, PETRI_TRANSITIONS=512} [2024-06-27 16:35:34,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-27 16:35:34,626 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 512 transitions, 9134 flow [2024-06-27 16:35:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.241379310344827) internal successors, (181), 29 states have internal predecessors, (181), 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) [2024-06-27 16:35:34,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:34,626 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:35:34,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-06-27 16:35:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-06-27 16:35:34,834 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:34,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash -943013625, now seen corresponding path program 14 times [2024-06-27 16:35:34,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:34,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763376688] [2024-06-27 16:35:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:35,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:35,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763376688] [2024-06-27 16:35:35,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763376688] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:35:35,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555580036] [2024-06-27 16:35:35,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:35:35,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:35:35,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:35:35,553 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:35:35,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-06-27 16:35:35,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:35:35,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:35:35,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:35:35,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:35:36,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:35:36,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2024-06-27 16:35:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:36,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:35:36,650 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:35:36,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:35:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:42,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555580036] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:35:42,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:35:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 28 [2024-06-27 16:35:42,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146151133] [2024-06-27 16:35:42,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:35:42,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-06-27 16:35:42,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-06-27 16:35:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2024-06-27 16:35:42,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:35:42,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 512 transitions, 9134 flow. Second operand has 28 states, 28 states have (on average 6.25) internal successors, (175), 28 states have internal predecessors, (175), 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) [2024-06-27 16:35:42,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:42,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:35:42,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:45,910 INFO L124 PetriNetUnfolderBase]: 5080/7599 cut-off events. [2024-06-27 16:35:45,910 INFO L125 PetriNetUnfolderBase]: For 380459/380459 co-relation queries the response was YES. [2024-06-27 16:35:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83214 conditions, 7599 events. 5080/7599 cut-off events. For 380459/380459 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 42637 event pairs, 1015 based on Foata normal form. 3/7602 useless extension candidates. Maximal degree in co-relation 83030. Up to 5996 conditions per place. [2024-06-27 16:35:45,991 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 387 selfloop transitions, 214 changer transitions 3/605 dead transitions. [2024-06-27 16:35:45,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 605 transitions, 11567 flow [2024-06-27 16:35:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 16:35:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 16:35:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 257 transitions. [2024-06-27 16:35:45,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36044880785413747 [2024-06-27 16:35:45,994 INFO L175 Difference]: Start difference. First operand has 300 places, 512 transitions, 9134 flow. Second operand 23 states and 257 transitions. [2024-06-27 16:35:45,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 605 transitions, 11567 flow [2024-06-27 16:35:47,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 605 transitions, 11214 flow, removed 112 selfloop flow, removed 12 redundant places. [2024-06-27 16:35:47,101 INFO L231 Difference]: Finished difference. Result has 313 places, 525 transitions, 9603 flow [2024-06-27 16:35:47,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=8781, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9603, PETRI_PLACES=313, PETRI_TRANSITIONS=525} [2024-06-27 16:35:47,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-27 16:35:47,108 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 525 transitions, 9603 flow [2024-06-27 16:35:47,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.25) internal successors, (175), 28 states have internal predecessors, (175), 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) [2024-06-27 16:35:47,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:47,108 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:35:47,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-06-27 16:35:47,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-06-27 16:35:47,320 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:47,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1085576849, now seen corresponding path program 15 times [2024-06-27 16:35:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:47,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389241415] [2024-06-27 16:35:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389241415] [2024-06-27 16:35:47,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389241415] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:35:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530158666] [2024-06-27 16:35:47,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:35:47,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:35:47,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:35:47,992 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:35:47,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-06-27 16:35:48,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-06-27 16:35:48,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:35:48,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 34 conjunts are in the unsatisfiable core [2024-06-27 16:35:48,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:35:48,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:35:48,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-06-27 16:35:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:48,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:35:48,992 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:35:48,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:35:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:35:55,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530158666] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:35:55,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:35:55,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 27 [2024-06-27 16:35:55,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073638252] [2024-06-27 16:35:55,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:35:55,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-06-27 16:35:55,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-06-27 16:35:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2024-06-27 16:35:55,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:35:55,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 525 transitions, 9603 flow. Second operand has 27 states, 27 states have (on average 6.2592592592592595) internal successors, (169), 27 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:55,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:55,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:35:55,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:58,258 INFO L124 PetriNetUnfolderBase]: 5094/7625 cut-off events. [2024-06-27 16:35:58,258 INFO L125 PetriNetUnfolderBase]: For 427945/427945 co-relation queries the response was YES. [2024-06-27 16:35:58,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85779 conditions, 7625 events. 5094/7625 cut-off events. For 427945/427945 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 43012 event pairs, 928 based on Foata normal form. 1/7626 useless extension candidates. Maximal degree in co-relation 85592. Up to 6319 conditions per place. [2024-06-27 16:35:58,348 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 400 selfloop transitions, 189 changer transitions 1/591 dead transitions. [2024-06-27 16:35:58,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 591 transitions, 11668 flow [2024-06-27 16:35:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 16:35:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 16:35:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 207 transitions. [2024-06-27 16:35:58,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35144312393887944 [2024-06-27 16:35:58,350 INFO L175 Difference]: Start difference. First operand has 313 places, 525 transitions, 9603 flow. Second operand 19 states and 207 transitions. [2024-06-27 16:35:58,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 591 transitions, 11668 flow [2024-06-27 16:35:59,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 591 transitions, 11230 flow, removed 137 selfloop flow, removed 13 redundant places. [2024-06-27 16:35:59,745 INFO L231 Difference]: Finished difference. Result has 320 places, 531 transitions, 9668 flow [2024-06-27 16:35:59,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=9165, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9668, PETRI_PLACES=320, PETRI_TRANSITIONS=531} [2024-06-27 16:35:59,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 16:35:59,746 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 531 transitions, 9668 flow [2024-06-27 16:35:59,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.2592592592592595) internal successors, (169), 27 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:59,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:59,746 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:35:59,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-06-27 16:35:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-06-27 16:35:59,958 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:59,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:59,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1027562539, now seen corresponding path program 16 times [2024-06-27 16:35:59,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:59,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773695826] [2024-06-27 16:35:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:36:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:36:00,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:36:00,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773695826] [2024-06-27 16:36:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773695826] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:36:00,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929686665] [2024-06-27 16:36:00,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:36:00,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:36:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:36:00,666 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:36:00,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-06-27 16:36:00,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:36:00,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:36:00,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:36:00,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:36:01,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:36:01,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:36:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:36:01,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:36:01,988 INFO L349 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2024-06-27 16:36:01,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 210 [2024-06-27 16:36:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:36:09,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929686665] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:36:09,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:36:09,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2024-06-27 16:36:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203629983] [2024-06-27 16:36:09,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:36:09,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-06-27 16:36:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:36:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-06-27 16:36:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-06-27 16:36:09,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:36:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 531 transitions, 9668 flow. Second operand has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:36:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:36:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:36:09,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:36:13,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-06-27 16:36:17,212 INFO L124 PetriNetUnfolderBase]: 5093/7620 cut-off events. [2024-06-27 16:36:17,212 INFO L125 PetriNetUnfolderBase]: For 430008/430008 co-relation queries the response was YES. [2024-06-27 16:36:17,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86271 conditions, 7620 events. 5093/7620 cut-off events. For 430008/430008 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42880 event pairs, 1015 based on Foata normal form. 3/7623 useless extension candidates. Maximal degree in co-relation 86083. Up to 5967 conditions per place. [2024-06-27 16:36:17,287 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 391 selfloop transitions, 211 changer transitions 3/606 dead transitions. [2024-06-27 16:36:17,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 606 transitions, 11808 flow [2024-06-27 16:36:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-27 16:36:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-27 16:36:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 232 transitions. [2024-06-27 16:36:17,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563748079877112 [2024-06-27 16:36:17,289 INFO L175 Difference]: Start difference. First operand has 320 places, 531 transitions, 9668 flow. Second operand 21 states and 232 transitions. [2024-06-27 16:36:17,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 606 transitions, 11808 flow [2024-06-27 16:36:18,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 606 transitions, 11539 flow, removed 22 selfloop flow, removed 14 redundant places. [2024-06-27 16:36:18,466 INFO L231 Difference]: Finished difference. Result has 328 places, 533 transitions, 9924 flow [2024-06-27 16:36:18,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=9399, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9924, PETRI_PLACES=328, PETRI_TRANSITIONS=533} [2024-06-27 16:36:18,467 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-27 16:36:18,467 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 533 transitions, 9924 flow [2024-06-27 16:36:18,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:36:18,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:36:18,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:36:18,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-06-27 16:36:18,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:36:18,680 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:36:18,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:36:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 271567235, now seen corresponding path program 17 times [2024-06-27 16:36:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:36:18,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012699600] [2024-06-27 16:36:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:36:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:36:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:36:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:36:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:36:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012699600] [2024-06-27 16:36:19,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012699600] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:36:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436956172] [2024-06-27 16:36:19,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:36:19,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:36:19,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:36:19,339 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:36:19,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-06-27 16:36:19,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 16:36:19,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:36:19,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:36:19,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:36:20,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:36:20,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2024-06-27 16:36:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:36:20,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:36:20,777 INFO L349 Elim1Store]: treesize reduction 15, result has 95.3 percent of original size [2024-06-27 16:36:20,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 325 [2024-06-27 16:37:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:37:03,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436956172] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:37:03,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:37:03,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 32 [2024-06-27 16:37:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180251200] [2024-06-27 16:37:03,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:37:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-06-27 16:37:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:37:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-06-27 16:37:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2024-06-27 16:37:03,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:37:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 533 transitions, 9924 flow. Second operand has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 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) [2024-06-27 16:37:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:37:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:37:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:37:06,546 INFO L124 PetriNetUnfolderBase]: 5196/7776 cut-off events. [2024-06-27 16:37:06,547 INFO L125 PetriNetUnfolderBase]: For 446746/446746 co-relation queries the response was YES. [2024-06-27 16:37:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89453 conditions, 7776 events. 5196/7776 cut-off events. For 446746/446746 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 44087 event pairs, 1036 based on Foata normal form. 2/7778 useless extension candidates. Maximal degree in co-relation 89263. Up to 6575 conditions per place. [2024-06-27 16:37:06,632 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 408 selfloop transitions, 182 changer transitions 2/593 dead transitions. [2024-06-27 16:37:06,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 593 transitions, 11968 flow [2024-06-27 16:37:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 16:37:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 16:37:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-06-27 16:37:06,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510436432637571 [2024-06-27 16:37:06,633 INFO L175 Difference]: Start difference. First operand has 328 places, 533 transitions, 9924 flow. Second operand 17 states and 185 transitions. [2024-06-27 16:37:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 593 transitions, 11968 flow [2024-06-27 16:37:08,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 593 transitions, 11733 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-27 16:37:08,161 INFO L231 Difference]: Finished difference. Result has 331 places, 544 transitions, 10393 flow [2024-06-27 16:37:08,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=9689, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10393, PETRI_PLACES=331, PETRI_TRANSITIONS=544} [2024-06-27 16:37:08,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-27 16:37:08,162 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 544 transitions, 10393 flow [2024-06-27 16:37:08,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 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) [2024-06-27 16:37:08,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:37:08,163 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:37:08,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-06-27 16:37:08,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:37:08,376 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:37:08,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:37:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1734453783, now seen corresponding path program 18 times [2024-06-27 16:37:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:37:08,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487015035] [2024-06-27 16:37:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:37:08,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:37:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:37:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:37:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:37:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487015035] [2024-06-27 16:37:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487015035] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:37:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39416968] [2024-06-27 16:37:08,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:37:08,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:37:08,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:37:08,994 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:37:08,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-06-27 16:37:09,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-06-27 16:37:09,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:37:09,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 32 conjunts are in the unsatisfiable core [2024-06-27 16:37:09,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:37:09,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:37:09,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2024-06-27 16:37:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:37:09,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:37:09,905 INFO L349 Elim1Store]: treesize reduction 8, result has 96.5 percent of original size [2024-06-27 16:37:09,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 236 [2024-06-27 16:37:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:37:18,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39416968] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:37:18,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:37:18,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 9] total 26 [2024-06-27 16:37:18,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580979221] [2024-06-27 16:37:18,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:37:18,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-06-27 16:37:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:37:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-06-27 16:37:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2024-06-27 16:37:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:37:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 544 transitions, 10393 flow. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 26 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) [2024-06-27 16:37:18,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:37:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:37:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:37:21,204 INFO L124 PetriNetUnfolderBase]: 5316/7949 cut-off events. [2024-06-27 16:37:21,205 INFO L125 PetriNetUnfolderBase]: For 471593/471593 co-relation queries the response was YES. [2024-06-27 16:37:21,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93610 conditions, 7949 events. 5316/7949 cut-off events. For 471593/471593 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 45176 event pairs, 946 based on Foata normal form. 1/7950 useless extension candidates. Maximal degree in co-relation 93417. Up to 6403 conditions per place. [2024-06-27 16:37:21,300 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 399 selfloop transitions, 212 changer transitions 1/613 dead transitions. [2024-06-27 16:37:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 613 transitions, 12640 flow [2024-06-27 16:37:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 16:37:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 16:37:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 188 transitions. [2024-06-27 16:37:21,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567362428842505 [2024-06-27 16:37:21,302 INFO L175 Difference]: Start difference. First operand has 331 places, 544 transitions, 10393 flow. Second operand 17 states and 188 transitions. [2024-06-27 16:37:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 613 transitions, 12640 flow [2024-06-27 16:37:22,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 613 transitions, 12347 flow, removed 55 selfloop flow, removed 13 redundant places. [2024-06-27 16:37:22,940 INFO L231 Difference]: Finished difference. Result has 338 places, 559 transitions, 10892 flow [2024-06-27 16:37:22,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=10103, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10892, PETRI_PLACES=338, PETRI_TRANSITIONS=559} [2024-06-27 16:37:22,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-27 16:37:22,942 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 559 transitions, 10892 flow [2024-06-27 16:37:22,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 26 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) [2024-06-27 16:37:22,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:37:22,943 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:37:22,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-06-27 16:37:23,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-06-27 16:37:23,157 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:37:23,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:37:23,159 INFO L85 PathProgramCache]: Analyzing trace with hash -848655503, now seen corresponding path program 19 times [2024-06-27 16:37:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:37:23,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511314822] [2024-06-27 16:37:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:37:23,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:37:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:37:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:37:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:37:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511314822] [2024-06-27 16:37:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511314822] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:37:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519879983] [2024-06-27 16:37:23,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:37:23,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:37:23,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:37:23,832 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:37:23,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-06-27 16:37:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:37:24,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 22 conjunts are in the unsatisfiable core [2024-06-27 16:37:24,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:37:24,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 16:37:24,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-06-27 16:37:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:37:24,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:37:24,939 INFO L349 Elim1Store]: treesize reduction 4, result has 98.8 percent of original size [2024-06-27 16:37:24,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 347 [2024-06-27 16:38:11,649 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-06-27 16:38:11,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-06-27 16:38:11,653 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-06-27 16:38:11,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-06-27 16:38:11,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-06-27 16:38:11,857 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 60 more [2024-06-27 16:38:11,861 INFO L158 Benchmark]: Toolchain (without parser) took 297487.37ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 118.9MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-06-27 16:38:11,861 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:38:11,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.64ms. Allocated memory is still 176.2MB. Free memory was 118.9MB in the beginning and 105.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 16:38:11,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.81ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 103.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:38:11,862 INFO L158 Benchmark]: Boogie Preprocessor took 68.68ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 99.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:38:11,862 INFO L158 Benchmark]: RCFGBuilder took 748.90ms. Allocated memory is still 176.2MB. Free memory was 99.6MB in the beginning and 81.4MB in the end (delta: 18.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 16:38:11,862 INFO L158 Benchmark]: TraceAbstraction took 296329.55ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 80.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-06-27 16:38:11,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.64ms. Allocated memory is still 176.2MB. Free memory was 118.9MB in the beginning and 105.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.81ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 103.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.68ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 99.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 748.90ms. Allocated memory is still 176.2MB. Free memory was 99.6MB in the beginning and 81.4MB in the end (delta: 18.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 296329.55ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 80.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:38:13,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:38:13,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-06-27 16:38:13,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:38:13,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:38:13,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:38:13,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:38:13,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:38:13,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:38:13,786 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:38:13,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:38:13,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:38:13,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:38:13,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:38:13,788 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:38:13,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:38:13,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:38:13,789 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:38:13,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:38:13,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:38:13,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:38:13,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:38:13,790 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:38:13,790 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-06-27 16:38:13,790 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-06-27 16:38:13,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:38:13,791 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-06-27 16:38:13,791 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:38:13,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:38:13,792 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:38:13,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:38:13,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:38:13,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:38:13,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:38:13,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:38:13,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:38:13,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:38:13,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:38:13,804 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-06-27 16:38:13,804 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-06-27 16:38:13,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:38:13,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:38:13,805 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:38:13,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:38:13,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:38:13,805 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-06-27 16:38:13,806 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36f5593156fc25b34b4c706b0d898a2d66ee8bab5f6d91cd69ff9cf3c129193 [2024-06-27 16:38:14,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:38:14,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:38:14,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:38:14,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:38:14,091 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:38:14,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-06-27 16:38:15,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:38:15,418 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:38:15,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2024-06-27 16:38:15,429 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55f2562e/8e63fa705f01448d9c075ae307d1eb3d/FLAGeddbecea2 [2024-06-27 16:38:15,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f55f2562e/8e63fa705f01448d9c075ae307d1eb3d [2024-06-27 16:38:15,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:38:15,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:38:15,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:38:15,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:38:15,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:38:15,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611b7f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15, skipping insertion in model container [2024-06-27 16:38:15,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:38:15,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2024-06-27 16:38:15,691 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:38:15,702 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-06-27 16:38:15,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:38:15,733 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2024-06-27 16:38:15,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:38:15,747 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:38:15,782 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3073,3086] [2024-06-27 16:38:15,787 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:38:15,802 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:38:15,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15 WrapperNode [2024-06-27 16:38:15,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:38:15,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:38:15,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:38:15,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:38:15,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,846 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 261 [2024-06-27 16:38:15,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:38:15,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:38:15,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:38:15,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:38:15,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,898 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-06-27 16:38:15,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:38:15,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:38:15,936 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:38:15,936 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:38:15,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (1/1) ... [2024-06-27 16:38:15,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:38:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:38:15,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 16:38:15,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:38:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:38:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-06-27 16:38:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-06-27 16:38:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-06-27 16:38:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-06-27 16:38:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:38:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:38:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:38:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:38:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:38:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:38:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:38:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:38:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:38:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-06-27 16:38:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-06-27 16:38:16,019 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:38:16,133 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:38:16,134 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:38:16,568 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:38:16,568 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:38:16,889 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:38:16,890 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 16:38:16,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:38:16 BoogieIcfgContainer [2024-06-27 16:38:16,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:38:16,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:38:16,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:38:16,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:38:16,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:38:15" (1/3) ... [2024-06-27 16:38:16,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6278b076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:38:16, skipping insertion in model container [2024-06-27 16:38:16,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:38:15" (2/3) ... [2024-06-27 16:38:16,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6278b076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:38:16, skipping insertion in model container [2024-06-27 16:38:16,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:38:16" (3/3) ... [2024-06-27 16:38:16,896 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2024-06-27 16:38:16,903 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:38:16,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:38:16,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:38:16,916 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:38:17,001 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:38:17,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-06-27 16:38:17,046 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-06-27 16:38:17,046 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:38:17,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-06-27 16:38:17,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-06-27 16:38:17,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-06-27 16:38:17,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:38:17,062 INFO L357 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, mHoare=true, 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;@1e3e80fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:38:17,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:38:17,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:38:17,071 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-06-27 16:38:17,071 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:38:17,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:17,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:17,072 INFO L420 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)] === [2024-06-27 16:38:17,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash -459898034, now seen corresponding path program 1 times [2024-06-27 16:38:17,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328849932] [2024-06-27 16:38:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:17,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:17,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:17,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:17,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-06-27 16:38:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:17,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:17,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:38:17,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:17,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:17,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328849932] [2024-06-27 16:38:17,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328849932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:17,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:17,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:38:17,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323762606] [2024-06-27 16:38:17,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:17,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:38:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:38:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:38:17,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:17,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 16:38:17,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:17,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:17,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:17,499 INFO L124 PetriNetUnfolderBase]: 202/302 cut-off events. [2024-06-27 16:38:17,500 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 16:38:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 302 events. 202/302 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 691 event pairs, 124 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 534. Up to 299 conditions per place. [2024-06-27 16:38:17,505 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2024-06-27 16:38:17,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 136 flow [2024-06-27 16:38:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:38:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:38:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-06-27 16:38:17,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-27 16:38:17,516 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 44 transitions. [2024-06-27 16:38:17,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 136 flow [2024-06-27 16:38:17,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:38:17,521 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 92 flow [2024-06-27 16:38:17,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-06-27 16:38:17,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-06-27 16:38:17,525 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 92 flow [2024-06-27 16:38:17,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-06-27 16:38:17,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:17,526 INFO L208 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] [2024-06-27 16:38:17,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:17,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:17,751 INFO L420 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)] === [2024-06-27 16:38:17,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1748545698, now seen corresponding path program 1 times [2024-06-27 16:38:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282154736] [2024-06-27 16:38:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:17,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:17,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:17,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:17,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-06-27 16:38:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:17,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 16:38:17,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:38:17,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:38:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:38:17,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:17,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282154736] [2024-06-27 16:38:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282154736] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:38:17,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:38:17,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-06-27 16:38:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104552876] [2024-06-27 16:38:17,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 16:38:17,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:38:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:38:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:38:17,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:17,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:38:17,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:17,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:17,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:18,111 INFO L124 PetriNetUnfolderBase]: 202/311 cut-off events. [2024-06-27 16:38:18,111 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:38:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 311 events. 202/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 691 event pairs, 124 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 611. Up to 299 conditions per place. [2024-06-27 16:38:18,113 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 23 selfloop transitions, 15 changer transitions 0/39 dead transitions. [2024-06-27 16:38:18,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 204 flow [2024-06-27 16:38:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:38:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:38:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 16:38:18,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 16:38:18,128 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 92 flow. Second operand 6 states and 71 transitions. [2024-06-27 16:38:18,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 204 flow [2024-06-27 16:38:18,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:18,130 INFO L231 Difference]: Finished difference. Result has 35 places, 39 transitions, 182 flow [2024-06-27 16:38:18,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=39} [2024-06-27 16:38:18,131 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 16:38:18,131 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 39 transitions, 182 flow [2024-06-27 16:38:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:38:18,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:18,136 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:18,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:18,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:18,339 INFO L420 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)] === [2024-06-27 16:38:18,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash -185550090, now seen corresponding path program 2 times [2024-06-27 16:38:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:18,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150414250] [2024-06-27 16:38:18,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:38:18,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:18,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:18,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-06-27 16:38:18,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 16:38:18,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:18,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:38:18,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 16:38:18,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:18,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150414250] [2024-06-27 16:38:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150414250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:18,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:18,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:38:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721638805] [2024-06-27 16:38:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:18,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:38:18,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:38:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:38:18,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:18,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 39 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:38:18,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:18,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:18,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:18,648 INFO L124 PetriNetUnfolderBase]: 330/506 cut-off events. [2024-06-27 16:38:18,649 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:38:18,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 506 events. 330/506 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1499 event pairs, 124 based on Foata normal form. 11/379 useless extension candidates. Maximal degree in co-relation 999. Up to 311 conditions per place. [2024-06-27 16:38:18,651 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 60 selfloop transitions, 3 changer transitions 2/66 dead transitions. [2024-06-27 16:38:18,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 66 transitions, 373 flow [2024-06-27 16:38:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:38:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:38:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-27 16:38:18,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-27 16:38:18,653 INFO L175 Difference]: Start difference. First operand has 35 places, 39 transitions, 182 flow. Second operand 4 states and 70 transitions. [2024-06-27 16:38:18,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 66 transitions, 373 flow [2024-06-27 16:38:18,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 66 transitions, 349 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:18,655 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 178 flow [2024-06-27 16:38:18,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2024-06-27 16:38:18,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-06-27 16:38:18,656 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 178 flow [2024-06-27 16:38:18,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:38:18,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:18,657 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:18,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-06-27 16:38:18,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:18,860 INFO L420 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)] === [2024-06-27 16:38:18,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:18,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1340894720, now seen corresponding path program 3 times [2024-06-27 16:38:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:18,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253498880] [2024-06-27 16:38:18,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:38:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:18,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:18,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:18,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-06-27 16:38:19,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-06-27 16:38:19,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:19,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:38:19,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-27 16:38:19,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:19,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253498880] [2024-06-27 16:38:19,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253498880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:19,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:19,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:38:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555135943] [2024-06-27 16:38:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:19,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:38:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:38:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:38:19,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:19,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:38:19,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:19,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:19,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:19,253 INFO L124 PetriNetUnfolderBase]: 368/560 cut-off events. [2024-06-27 16:38:19,253 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-06-27 16:38:19,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 560 events. 368/560 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1739 event pairs, 61 based on Foata normal form. 16/452 useless extension candidates. Maximal degree in co-relation 1358. Up to 375 conditions per place. [2024-06-27 16:38:19,256 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 55 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2024-06-27 16:38:19,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 362 flow [2024-06-27 16:38:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:38:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:38:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-27 16:38:19,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 16:38:19,258 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 178 flow. Second operand 4 states and 62 transitions. [2024-06-27 16:38:19,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 362 flow [2024-06-27 16:38:19,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 351 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:19,260 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 203 flow [2024-06-27 16:38:19,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-06-27 16:38:19,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-27 16:38:19,261 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 203 flow [2024-06-27 16:38:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:38:19,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:19,261 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:19,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:19,464 INFO L420 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)] === [2024-06-27 16:38:19,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1194518610, now seen corresponding path program 4 times [2024-06-27 16:38:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769936723] [2024-06-27 16:38:19,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:38:19,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:19,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:19,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:19,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-06-27 16:38:19,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:38:19,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:19,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:38:19,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:19,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:38:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-06-27 16:38:19,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:19,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769936723] [2024-06-27 16:38:19,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769936723] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:38:19,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:38:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-06-27 16:38:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33582941] [2024-06-27 16:38:19,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 16:38:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 16:38:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 16:38:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 16:38:19,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:19,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 203 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-06-27 16:38:19,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:19,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:19,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:20,074 INFO L124 PetriNetUnfolderBase]: 368/563 cut-off events. [2024-06-27 16:38:20,074 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2024-06-27 16:38:20,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 563 events. 368/563 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1604 event pairs, 227 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 1437. Up to 547 conditions per place. [2024-06-27 16:38:20,077 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 18 changer transitions 0/46 dead transitions. [2024-06-27 16:38:20,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 311 flow [2024-06-27 16:38:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:38:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:38:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 16:38:20,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-27 16:38:20,078 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 203 flow. Second operand 7 states and 72 transitions. [2024-06-27 16:38:20,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 311 flow [2024-06-27 16:38:20,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:38:20,080 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 268 flow [2024-06-27 16:38:20,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-06-27 16:38:20,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-27 16:38:20,081 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 268 flow [2024-06-27 16:38:20,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 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) [2024-06-27 16:38:20,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:20,082 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:20,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:20,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:20,285 INFO L420 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)] === [2024-06-27 16:38:20,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1682901534, now seen corresponding path program 5 times [2024-06-27 16:38:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999072197] [2024-06-27 16:38:20,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:38:20,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:20,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:20,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-06-27 16:38:20,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 16:38:20,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:20,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:38:20,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:20,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:20,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999072197] [2024-06-27 16:38:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999072197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:20,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:20,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:38:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788882264] [2024-06-27 16:38:20,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:20,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:38:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:38:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:38:20,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:20,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:38:20,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:20,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:20,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:20,740 INFO L124 PetriNetUnfolderBase]: 315/482 cut-off events. [2024-06-27 16:38:20,740 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2024-06-27 16:38:20,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 482 events. 315/482 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1406 event pairs, 108 based on Foata normal form. 16/394 useless extension candidates. Maximal degree in co-relation 1231. Up to 330 conditions per place. [2024-06-27 16:38:20,743 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 58 selfloop transitions, 6 changer transitions 2/67 dead transitions. [2024-06-27 16:38:20,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 452 flow [2024-06-27 16:38:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:38:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:38:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-27 16:38:20,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-27 16:38:20,744 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 268 flow. Second operand 4 states and 66 transitions. [2024-06-27 16:38:20,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 452 flow [2024-06-27 16:38:20,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 416 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 16:38:20,746 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 253 flow [2024-06-27 16:38:20,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-06-27 16:38:20,747 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-27 16:38:20,747 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 253 flow [2024-06-27 16:38:20,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-27 16:38:20,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:20,747 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:20,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:20,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:20,953 INFO L420 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)] === [2024-06-27 16:38:20,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1366589679, now seen corresponding path program 1 times [2024-06-27 16:38:20,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:20,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427340337] [2024-06-27 16:38:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:20,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:20,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:20,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:20,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-06-27 16:38:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:21,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-27 16:38:21,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-27 16:38:21,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:21,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427340337] [2024-06-27 16:38:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427340337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:21,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:21,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:38:21,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526032362] [2024-06-27 16:38:21,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:21,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:38:21,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:21,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:38:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:38:21,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:21,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-27 16:38:21,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:21,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:21,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:21,687 INFO L124 PetriNetUnfolderBase]: 713/1039 cut-off events. [2024-06-27 16:38:21,687 INFO L125 PetriNetUnfolderBase]: For 1408/1408 co-relation queries the response was YES. [2024-06-27 16:38:21,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1039 events. 713/1039 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3682 event pairs, 155 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 2840. Up to 492 conditions per place. [2024-06-27 16:38:21,692 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 92 selfloop transitions, 17 changer transitions 13/123 dead transitions. [2024-06-27 16:38:21,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 123 transitions, 832 flow [2024-06-27 16:38:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:38:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:38:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 16:38:21,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-27 16:38:21,694 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 253 flow. Second operand 9 states and 125 transitions. [2024-06-27 16:38:21,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 123 transitions, 832 flow [2024-06-27 16:38:21,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 123 transitions, 760 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 16:38:21,697 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 353 flow [2024-06-27 16:38:21,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2024-06-27 16:38:21,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-27 16:38:21,697 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 353 flow [2024-06-27 16:38:21,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-27 16:38:21,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:21,698 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:21,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-06-27 16:38:21,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:21,911 INFO L420 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)] === [2024-06-27 16:38:21,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:21,912 INFO L85 PathProgramCache]: Analyzing trace with hash 455707483, now seen corresponding path program 2 times [2024-06-27 16:38:21,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:21,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569641051] [2024-06-27 16:38:21,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:38:21,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:21,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:21,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:21,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-06-27 16:38:22,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-27 16:38:22,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:22,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:22,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:38:22,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:22,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569641051] [2024-06-27 16:38:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569641051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:38:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544041397] [2024-06-27 16:38:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:38:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:38:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:38:22,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:22,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:38:22,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:22,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:22,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:22,283 INFO L124 PetriNetUnfolderBase]: 756/1114 cut-off events. [2024-06-27 16:38:22,284 INFO L125 PetriNetUnfolderBase]: For 2028/2028 co-relation queries the response was YES. [2024-06-27 16:38:22,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4156 conditions, 1114 events. 756/1114 cut-off events. For 2028/2028 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3836 event pairs, 275 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 4053. Up to 749 conditions per place. [2024-06-27 16:38:22,288 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 63 selfloop transitions, 5 changer transitions 8/77 dead transitions. [2024-06-27 16:38:22,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 595 flow [2024-06-27 16:38:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:38:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:38:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-06-27 16:38:22,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-27 16:38:22,290 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 353 flow. Second operand 3 states and 51 transitions. [2024-06-27 16:38:22,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 595 flow [2024-06-27 16:38:22,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 578 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 16:38:22,294 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 339 flow [2024-06-27 16:38:22,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-06-27 16:38:22,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-27 16:38:22,295 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 339 flow [2024-06-27 16:38:22,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:38:22,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:22,296 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:22,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:22,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:22,508 INFO L420 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)] === [2024-06-27 16:38:22,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:22,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1627570861, now seen corresponding path program 1 times [2024-06-27 16:38:22,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:22,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494630939] [2024-06-27 16:38:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:22,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:22,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:22,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:22,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-06-27 16:38:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:38:22,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:22,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:38:22,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:22,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494630939] [2024-06-27 16:38:22,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494630939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:22,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:22,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001211142] [2024-06-27 16:38:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:22,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:22,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:22,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:22,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:22,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:23,017 INFO L124 PetriNetUnfolderBase]: 678/1001 cut-off events. [2024-06-27 16:38:23,018 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2024-06-27 16:38:23,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1001 events. 678/1001 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3359 event pairs, 107 based on Foata normal form. 22/847 useless extension candidates. Maximal degree in co-relation 3633. Up to 458 conditions per place. [2024-06-27 16:38:23,022 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 83 selfloop transitions, 10 changer transitions 1/95 dead transitions. [2024-06-27 16:38:23,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 720 flow [2024-06-27 16:38:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-27 16:38:23,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-27 16:38:23,024 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 339 flow. Second operand 5 states and 74 transitions. [2024-06-27 16:38:23,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 720 flow [2024-06-27 16:38:23,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 703 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 16:38:23,029 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 383 flow [2024-06-27 16:38:23,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-27 16:38:23,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-27 16:38:23,030 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 383 flow [2024-06-27 16:38:23,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:23,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:23,031 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:23,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:23,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:23,236 INFO L420 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)] === [2024-06-27 16:38:23,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1393446841, now seen corresponding path program 2 times [2024-06-27 16:38:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:23,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984822786] [2024-06-27 16:38:23,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:38:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:23,238 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:23,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-06-27 16:38:23,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:38:23,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:23,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:23,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:38:23,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:23,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:23,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984822786] [2024-06-27 16:38:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984822786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:23,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:23,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607272242] [2024-06-27 16:38:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:23,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:23,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:23,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:23,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:23,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:23,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:23,844 INFO L124 PetriNetUnfolderBase]: 721/1067 cut-off events. [2024-06-27 16:38:23,845 INFO L125 PetriNetUnfolderBase]: For 2141/2141 co-relation queries the response was YES. [2024-06-27 16:38:23,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4085 conditions, 1067 events. 721/1067 cut-off events. For 2141/2141 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3711 event pairs, 198 based on Foata normal form. 12/899 useless extension candidates. Maximal degree in co-relation 3980. Up to 605 conditions per place. [2024-06-27 16:38:23,850 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 70 selfloop transitions, 12 changer transitions 9/92 dead transitions. [2024-06-27 16:38:23,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 707 flow [2024-06-27 16:38:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-27 16:38:23,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2024-06-27 16:38:23,852 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 383 flow. Second operand 5 states and 76 transitions. [2024-06-27 16:38:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 707 flow [2024-06-27 16:38:23,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:38:23,859 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 417 flow [2024-06-27 16:38:23,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-27 16:38:23,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-27 16:38:23,861 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 417 flow [2024-06-27 16:38:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:23,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:23,861 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:23,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-06-27 16:38:24,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:24,067 INFO L420 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)] === [2024-06-27 16:38:24,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash 582473599, now seen corresponding path program 3 times [2024-06-27 16:38:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:24,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000586595] [2024-06-27 16:38:24,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:38:24,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:24,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:24,069 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:24,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-06-27 16:38:24,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 16:38:24,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:38:24,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:24,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000586595] [2024-06-27 16:38:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000586595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196242604] [2024-06-27 16:38:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:24,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:24,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:24,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:24,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:24,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:24,593 INFO L124 PetriNetUnfolderBase]: 759/1115 cut-off events. [2024-06-27 16:38:24,593 INFO L125 PetriNetUnfolderBase]: For 2431/2431 co-relation queries the response was YES. [2024-06-27 16:38:24,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 1115 events. 759/1115 cut-off events. For 2431/2431 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3909 event pairs, 198 based on Foata normal form. 22/944 useless extension candidates. Maximal degree in co-relation 4392. Up to 627 conditions per place. [2024-06-27 16:38:24,600 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 79 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-27 16:38:24,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 746 flow [2024-06-27 16:38:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-06-27 16:38:24,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-06-27 16:38:24,601 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 417 flow. Second operand 5 states and 77 transitions. [2024-06-27 16:38:24,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 746 flow [2024-06-27 16:38:24,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 733 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 16:38:24,607 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 441 flow [2024-06-27 16:38:24,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 16:38:24,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-27 16:38:24,607 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 441 flow [2024-06-27 16:38:24,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:24,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:24,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:24,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:24,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:24,812 INFO L420 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)] === [2024-06-27 16:38:24,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1203014359, now seen corresponding path program 4 times [2024-06-27 16:38:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:24,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210217677] [2024-06-27 16:38:24,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:38:24,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:24,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:24,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:24,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-06-27 16:38:25,051 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:38:25,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:25,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:25,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:38:25,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:25,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:25,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210217677] [2024-06-27 16:38:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210217677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:25,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:25,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068724339] [2024-06-27 16:38:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:25,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:25,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:25,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:25,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:25,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:25,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:25,406 INFO L124 PetriNetUnfolderBase]: 737/1093 cut-off events. [2024-06-27 16:38:25,406 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-27 16:38:25,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 1093 events. 737/1093 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3785 event pairs, 242 based on Foata normal form. 22/922 useless extension candidates. Maximal degree in co-relation 4354. Up to 753 conditions per place. [2024-06-27 16:38:25,412 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 84 selfloop transitions, 10 changer transitions 1/96 dead transitions. [2024-06-27 16:38:25,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 786 flow [2024-06-27 16:38:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-06-27 16:38:25,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2024-06-27 16:38:25,413 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 441 flow. Second operand 5 states and 77 transitions. [2024-06-27 16:38:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 786 flow [2024-06-27 16:38:25,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 756 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 16:38:25,418 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 435 flow [2024-06-27 16:38:25,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-06-27 16:38:25,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-27 16:38:25,419 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 435 flow [2024-06-27 16:38:25,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:25,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:25,419 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:25,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:25,625 INFO L420 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)] === [2024-06-27 16:38:25,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash 469646113, now seen corresponding path program 5 times [2024-06-27 16:38:25,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:25,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631428587] [2024-06-27 16:38:25,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:38:25,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:25,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:25,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-06-27 16:38:26,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-06-27 16:38:26,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:38:26,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:38:26,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:38:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-06-27 16:38:26,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:38:26,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-06-27 16:38:26,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631428587] [2024-06-27 16:38:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631428587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:38:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:38:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:38:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939957051] [2024-06-27 16:38:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:38:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:38:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-06-27 16:38:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:38:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:38:26,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-06-27 16:38:26,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:26,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:38:26,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-06-27 16:38:26,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:38:26,465 INFO L124 PetriNetUnfolderBase]: 655/962 cut-off events. [2024-06-27 16:38:26,465 INFO L125 PetriNetUnfolderBase]: For 2426/2426 co-relation queries the response was YES. [2024-06-27 16:38:26,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3937 conditions, 962 events. 655/962 cut-off events. For 2426/2426 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3227 event pairs, 234 based on Foata normal form. 12/801 useless extension candidates. Maximal degree in co-relation 3829. Up to 760 conditions per place. [2024-06-27 16:38:26,471 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 71 selfloop transitions, 8 changer transitions 9/89 dead transitions. [2024-06-27 16:38:26,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 726 flow [2024-06-27 16:38:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:38:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:38:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-27 16:38:26,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-06-27 16:38:26,472 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 435 flow. Second operand 5 states and 71 transitions. [2024-06-27 16:38:26,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 726 flow [2024-06-27 16:38:26,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 710 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 16:38:26,476 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 419 flow [2024-06-27 16:38:26,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-06-27 16:38:26,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-27 16:38:26,477 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 419 flow [2024-06-27 16:38:26,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-06-27 16:38:26,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:38:26,477 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:38:26,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-06-27 16:38:26,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:26,684 INFO L420 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)] === [2024-06-27 16:38:26,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:38:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1708211375, now seen corresponding path program 1 times [2024-06-27 16:38:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-06-27 16:38:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114556328] [2024-06-27 16:38:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:38:26,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-06-27 16:38:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-06-27 16:38:26,686 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-06-27 16:38:26,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process Killed by 15