./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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/popl20-more-array-sum2.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.graphml --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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 20:36:49,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 20:36:49,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 20:36:49,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 20:36:49,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 20:36:49,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 20:36:49,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 20:36:49,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 20:36:49,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 20:36:49,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 20:36:49,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 20:36:49,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 20:36:49,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 20:36:49,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 20:36:49,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 20:36:49,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 20:36:49,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 20:36:49,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 20:36:49,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 20:36:49,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 20:36:49,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 20:36:49,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 20:36:49,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 20:36:49,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 20:36:49,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 20:36:49,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 20:36:49,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 20:36:49,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 20:36:49,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 20:36:49,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 20:36:49,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 20:36:49,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 20:36:49,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 20:36:49,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 20:36:49,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 20:36:49,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 20:36:49,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 20:36:49,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 20:36:49,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 20:36:49,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 20:36:49,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 20:36:49,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 20:36:49,819 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 20:36:49,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 20:36:49,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 20:36:49,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 20:36:49,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 20:36:49,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 20:36:49,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 20:36:49,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 20:36:49,822 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 20:36:49,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 20:36:49,823 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 20:36:49,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 20:36:49,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 20:36:49,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 20:36:49,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 20:36:49,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 20:36:49,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 20:36:49,825 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 20:36:49,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 20:36:49,825 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 20:36:49,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 20:36:49,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 20:36:49,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 20:36:49,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 20:36:49,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:36:49,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 20:36:49,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 20:36:49,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 20:36:49,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 20:36:49,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 20:36:49,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 20:36:49,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 20:36:49,827 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 20:36:49,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 20:36:49,828 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 20:36:49,828 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 20:36:50,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 20:36:50,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 20:36:50,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 20:36:50,160 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 20:36:50,161 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 20:36:50,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-30 20:36:51,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 20:36:51,602 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 20:36:51,602 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-30 20:36:51,607 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2e2bf98/5e715eaba9fa47a088229cb942139b63/FLAG954e9adae [2023-08-30 20:36:51,622 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed2e2bf98/5e715eaba9fa47a088229cb942139b63 [2023-08-30 20:36:51,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 20:36:51,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 20:36:51,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 20:36:51,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 20:36:51,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 20:36:51,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fc8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51, skipping insertion in model container [2023-08-30 20:36:51,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 20:36:51,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 20:36:51,791 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/popl20-more-array-sum2.wvr.c[2599,2612] [2023-08-30 20:36:51,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:36:51,812 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 20:36:51,830 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/popl20-more-array-sum2.wvr.c[2599,2612] [2023-08-30 20:36:51,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 20:36:51,842 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:36:51,842 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 20:36:51,848 INFO L208 MainTranslator]: Completed translation [2023-08-30 20:36:51,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51 WrapperNode [2023-08-30 20:36:51,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 20:36:51,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 20:36:51,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 20:36:51,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 20:36:51,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,900 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 275 [2023-08-30 20:36:51,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 20:36:51,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 20:36:51,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 20:36:51,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 20:36:51,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 20:36:51,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 20:36:51,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 20:36:51,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 20:36:51,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (1/1) ... [2023-08-30 20:36:51,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 20:36:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:36:51,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 20:36:52,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 20:36:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 20:36:52,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 20:36:52,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 20:36:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 20:36:52,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 20:36:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 20:36:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 20:36:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 20:36:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 20:36:52,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 20:36:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 20:36:52,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 20:36:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 20:36:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 20:36:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 20:36:52,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 20:36:52,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 20:36:52,038 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 20:36:52,182 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 20:36:52,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 20:36:52,558 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 20:36:52,912 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 20:36:52,912 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 20:36:52,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:36:52 BoogieIcfgContainer [2023-08-30 20:36:52,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 20:36:52,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 20:36:52,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 20:36:52,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 20:36:52,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:36:51" (1/3) ... [2023-08-30 20:36:52,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ee5dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:36:52, skipping insertion in model container [2023-08-30 20:36:52,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:36:51" (2/3) ... [2023-08-30 20:36:52,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ee5dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:36:52, skipping insertion in model container [2023-08-30 20:36:52,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:36:52" (3/3) ... [2023-08-30 20:36:52,923 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-08-30 20:36:52,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 20:36:52,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 20:36:52,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 20:36:52,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 20:36:53,019 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 20:36:53,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 384 flow [2023-08-30 20:36:53,157 INFO L130 PetriNetUnfolder]: 16/177 cut-off events. [2023-08-30 20:36:53,163 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:36:53,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 16/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-08-30 20:36:53,172 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 384 flow [2023-08-30 20:36:53,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 352 flow [2023-08-30 20:36:53,186 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 20:36:53,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 352 flow [2023-08-30 20:36:53,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 352 flow [2023-08-30 20:36:53,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 352 flow [2023-08-30 20:36:53,254 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-08-30 20:36:53,256 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:36:53,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 16/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-08-30 20:36:53,268 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-08-30 20:36:59,275 INFO L134 LiptonReduction]: Checked pairs total: 1529 [2023-08-30 20:36:59,276 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-30 20:36:59,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 20:36:59,305 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=LoopsAndPotentialCycles, 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;@3cb79598, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 20:36:59,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 20:36:59,317 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-08-30 20:36:59,318 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 20:36:59,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:36:59,319 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] [2023-08-30 20:36:59,319 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)] === [2023-08-30 20:36:59,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:36:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash -118065051, now seen corresponding path program 1 times [2023-08-30 20:36:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:36:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739483187] [2023-08-30 20:36:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:36:59,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:36:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:36:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:36:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:36:59,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739483187] [2023-08-30 20:36:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739483187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:36:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:36:59,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 20:36:59,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175736674] [2023-08-30 20:36:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:36:59,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 20:36:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:36:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 20:36:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 20:37:00,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 353 [2023-08-30 20:37:00,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2023-08-30 20:37:00,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:37:00,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 353 [2023-08-30 20:37:00,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:37:00,168 INFO L130 PetriNetUnfolder]: 343/476 cut-off events. [2023-08-30 20:37:00,169 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 20:37:00,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 476 events. 343/476 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1477 event pairs, 133 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-08-30 20:37:00,174 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-30 20:37:00,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 164 flow [2023-08-30 20:37:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 20:37:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 20:37:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-30 20:37:00,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45538243626062325 [2023-08-30 20:37:00,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-30 20:37:00,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-30 20:37:00,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:37:00,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-30 20:37:00,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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) [2023-08-30 20:37:00,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 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) [2023-08-30 20:37:00,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 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) [2023-08-30 20:37:00,209 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 4 states and 643 transitions. [2023-08-30 20:37:00,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 164 flow [2023-08-30 20:37:00,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 20:37:00,215 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 72 flow [2023-08-30 20:37:00,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-08-30 20:37:00,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-08-30 20:37:00,220 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 72 flow [2023-08-30 20:37:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 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) [2023-08-30 20:37:00,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:37:00,221 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] [2023-08-30 20:37:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 20:37:00,222 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)] === [2023-08-30 20:37:00,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:37:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -628194304, now seen corresponding path program 1 times [2023-08-30 20:37:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:37:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216665562] [2023-08-30 20:37:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:37:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:37:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:37:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:37:00,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:37:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216665562] [2023-08-30 20:37:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216665562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 20:37:00,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 20:37:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 20:37:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54491412] [2023-08-30 20:37:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:37:00,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 20:37:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:37:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 20:37:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 20:37:00,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-30 20:37:00,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 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) [2023-08-30 20:37:00,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:37:00,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-30 20:37:00,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:37:00,810 INFO L130 PetriNetUnfolder]: 344/481 cut-off events. [2023-08-30 20:37:00,810 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 20:37:00,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 481 events. 344/481 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1492 event pairs, 133 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 323. Up to 373 conditions per place. [2023-08-30 20:37:00,814 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 31 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-08-30 20:37:00,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 180 flow [2023-08-30 20:37:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 20:37:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 20:37:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 899 transitions. [2023-08-30 20:37:00,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42445703493862136 [2023-08-30 20:37:00,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 899 transitions. [2023-08-30 20:37:00,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 899 transitions. [2023-08-30 20:37:00,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:37:00,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 899 transitions. [2023-08-30 20:37:00,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 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) [2023-08-30 20:37:00,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 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) [2023-08-30 20:37:00,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 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) [2023-08-30 20:37:00,826 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 72 flow. Second operand 6 states and 899 transitions. [2023-08-30 20:37:00,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 180 flow [2023-08-30 20:37:00,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 20:37:00,829 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 96 flow [2023-08-30 20:37:00,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-30 20:37:00,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-08-30 20:37:00,830 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 96 flow [2023-08-30 20:37:00,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 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) [2023-08-30 20:37:00,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:37:00,831 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] [2023-08-30 20:37:00,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 20:37:00,831 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)] === [2023-08-30 20:37:00,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:37:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1446722701, now seen corresponding path program 1 times [2023-08-30 20:37:00,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:37:00,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841216596] [2023-08-30 20:37:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:37:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:37:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:37:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:37:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:37:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841216596] [2023-08-30 20:37:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841216596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:37:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291951958] [2023-08-30 20:37:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:37:00,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:37:00,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:37:00,937 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) [2023-08-30 20:37:00,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 20:37:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:37:01,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 20:37:01,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:37:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:37:01,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:37:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:37:01,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291951958] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 20:37:01,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 20:37:01,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-30 20:37:01,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544208545] [2023-08-30 20:37:01,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 20:37:01,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 20:37:01,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:37:01,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 20:37:01,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 20:37:01,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 353 [2023-08-30 20:37:01,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 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) [2023-08-30 20:37:01,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:37:01,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 353 [2023-08-30 20:37:01,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:37:01,413 INFO L130 PetriNetUnfolder]: 312/453 cut-off events. [2023-08-30 20:37:01,413 INFO L131 PetriNetUnfolder]: For 114/150 co-relation queries the response was YES. [2023-08-30 20:37:01,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 453 events. 312/453 cut-off events. For 114/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1498 event pairs, 134 based on Foata normal form. 36/382 useless extension candidates. Maximal degree in co-relation 1003. Up to 352 conditions per place. [2023-08-30 20:37:01,417 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 34 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-30 20:37:01,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-08-30 20:37:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 20:37:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 20:37:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-08-30 20:37:01,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198300283286119 [2023-08-30 20:37:01,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-08-30 20:37:01,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-08-30 20:37:01,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:37:01,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-08-30 20:37:01,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 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) [2023-08-30 20:37:01,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 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) [2023-08-30 20:37:01,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 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) [2023-08-30 20:37:01,426 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 96 flow. Second operand 5 states and 741 transitions. [2023-08-30 20:37:01,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-08-30 20:37:01,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 196 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 20:37:01,428 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 106 flow [2023-08-30 20:37:01,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-30 20:37:01,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-08-30 20:37:01,429 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 106 flow [2023-08-30 20:37:01,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 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) [2023-08-30 20:37:01,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:37:01,430 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] [2023-08-30 20:37:01,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 20:37:01,637 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 [2023-08-30 20:37:01,637 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)] === [2023-08-30 20:37:01,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:37:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 768134593, now seen corresponding path program 1 times [2023-08-30 20:37:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:37:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884943955] [2023-08-30 20:37:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:37:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:37:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:37:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:37:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:37:03,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884943955] [2023-08-30 20:37:03,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884943955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:37:03,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049925681] [2023-08-30 20:37:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:37:03,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:37:03,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:37:03,685 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) [2023-08-30 20:37:03,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 20:37:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:37:03,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 75 conjunts are in the unsatisfiable core [2023-08-30 20:37:03,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:37:04,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 20:37:04,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:37:04,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:37:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:37:04,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:37:04,551 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 20:37:04,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-30 20:37:04,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:37:04,722 INFO L350 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 33 treesize of output 81 [2023-08-30 20:37:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:37:04,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:37:05,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:37:05,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2023-08-30 20:37:05,760 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:37:05,763 INFO L350 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 9568246 treesize of output 8519738 [2023-08-30 20:37:06,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:37:06,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2070 treesize of output 1966 [2023-08-30 20:37:06,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:37:06,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1910 treesize of output 1646 [2023-08-30 20:37:06,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:37:06,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1590 treesize of output 1214 [2023-08-30 20:38:24,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:38:24,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049925681] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:38:24,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:38:24,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2023-08-30 20:38:24,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866803118] [2023-08-30 20:38:24,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:38:24,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-30 20:38:24,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:38:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-30 20:38:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1454, Unknown=21, NotChecked=0, Total=1640 [2023-08-30 20:38:26,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-08-30 20:38:26,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 106 flow. Second operand has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 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) [2023-08-30 20:38:26,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:38:26,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-08-30 20:38:26,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:38:31,415 INFO L130 PetriNetUnfolder]: 1358/2022 cut-off events. [2023-08-30 20:38:31,415 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2023-08-30 20:38:31,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2022 events. 1358/2022 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8523 event pairs, 124 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 3147. Up to 853 conditions per place. [2023-08-30 20:38:31,428 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 195 selfloop transitions, 89 changer transitions 4/288 dead transitions. [2023-08-30 20:38:31,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 288 transitions, 1407 flow [2023-08-30 20:38:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 20:38:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 20:38:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3156 transitions. [2023-08-30 20:38:31,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25544314042897615 [2023-08-30 20:38:31,439 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3156 transitions. [2023-08-30 20:38:31,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3156 transitions. [2023-08-30 20:38:31,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:38:31,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3156 transitions. [2023-08-30 20:38:31,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 90.17142857142858) internal successors, (3156), 35 states have internal predecessors, (3156), 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) [2023-08-30 20:38:31,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 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) [2023-08-30 20:38:31,470 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 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) [2023-08-30 20:38:31,471 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 106 flow. Second operand 35 states and 3156 transitions. [2023-08-30 20:38:31,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 288 transitions, 1407 flow [2023-08-30 20:38:31,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 288 transitions, 1383 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 20:38:31,483 INFO L231 Difference]: Finished difference. Result has 77 places, 115 transitions, 618 flow [2023-08-30 20:38:31,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=115} [2023-08-30 20:38:31,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2023-08-30 20:38:31,486 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 115 transitions, 618 flow [2023-08-30 20:38:31,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 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) [2023-08-30 20:38:31,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:38:31,489 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] [2023-08-30 20:38:31,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 20:38:31,695 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 [2023-08-30 20:38:31,696 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)] === [2023-08-30 20:38:31,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:38:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash -644630665, now seen corresponding path program 2 times [2023-08-30 20:38:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:38:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105787108] [2023-08-30 20:38:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:38:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:38:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:38:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:38:33,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:38:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105787108] [2023-08-30 20:38:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105787108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:38:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920756604] [2023-08-30 20:38:33,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:38:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:38:33,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:38:33,029 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) [2023-08-30 20:38:33,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 20:38:33,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:38:33,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:38:33,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-30 20:38:33,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:38:33,669 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-30 20:38:33,669 INFO L350 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 31 treesize of output 43 [2023-08-30 20:38:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:33,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:38:33,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:38:33,854 INFO L350 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 41 treesize of output 86 [2023-08-30 20:38:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:34,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920756604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:38:34,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:38:34,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-08-30 20:38:34,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174144247] [2023-08-30 20:38:34,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:38:34,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 20:38:34,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:38:34,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 20:38:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 20:38:36,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-30 20:38:36,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 115 transitions, 618 flow. Second operand has 34 states, 34 states have (on average 112.79411764705883) internal successors, (3835), 34 states have internal predecessors, (3835), 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) [2023-08-30 20:38:36,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:38:36,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-30 20:38:36,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:38:39,817 INFO L130 PetriNetUnfolder]: 2763/4217 cut-off events. [2023-08-30 20:38:39,817 INFO L131 PetriNetUnfolder]: For 5950/5950 co-relation queries the response was YES. [2023-08-30 20:38:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 4217 events. 2763/4217 cut-off events. For 5950/5950 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21647 event pairs, 162 based on Foata normal form. 46/4257 useless extension candidates. Maximal degree in co-relation 13956. Up to 1788 conditions per place. [2023-08-30 20:38:39,849 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 238 selfloop transitions, 227 changer transitions 23/488 dead transitions. [2023-08-30 20:38:39,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 488 transitions, 3349 flow [2023-08-30 20:38:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-30 20:38:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-30 20:38:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5526 transitions. [2023-08-30 20:38:39,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33307214754987646 [2023-08-30 20:38:39,864 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5526 transitions. [2023-08-30 20:38:39,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5526 transitions. [2023-08-30 20:38:39,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:38:39,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5526 transitions. [2023-08-30 20:38:39,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 117.57446808510639) internal successors, (5526), 47 states have internal predecessors, (5526), 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) [2023-08-30 20:38:39,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 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) [2023-08-30 20:38:39,900 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 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) [2023-08-30 20:38:39,900 INFO L175 Difference]: Start difference. First operand has 77 places, 115 transitions, 618 flow. Second operand 47 states and 5526 transitions. [2023-08-30 20:38:39,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 488 transitions, 3349 flow [2023-08-30 20:38:39,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 488 transitions, 3210 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-08-30 20:38:39,928 INFO L231 Difference]: Finished difference. Result has 138 places, 321 transitions, 2430 flow [2023-08-30 20:38:39,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2430, PETRI_PLACES=138, PETRI_TRANSITIONS=321} [2023-08-30 20:38:39,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2023-08-30 20:38:39,930 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 321 transitions, 2430 flow [2023-08-30 20:38:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 112.79411764705883) internal successors, (3835), 34 states have internal predecessors, (3835), 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) [2023-08-30 20:38:39,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:38:39,932 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] [2023-08-30 20:38:39,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 20:38:40,137 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 [2023-08-30 20:38:40,137 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)] === [2023-08-30 20:38:40,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:38:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1317014283, now seen corresponding path program 3 times [2023-08-30 20:38:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:38:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019235753] [2023-08-30 20:38:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:38:40,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:38:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:38:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:38:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:38:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019235753] [2023-08-30 20:38:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019235753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:38:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123541880] [2023-08-30 20:38:41,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:38:41,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:38:41,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:38:41,285 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) [2023-08-30 20:38:41,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 20:38:41,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:38:41,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:38:41,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-30 20:38:41,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:38:41,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:38:41,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-08-30 20:38:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:41,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:38:41,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:38:41,894 INFO L350 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 41 treesize of output 86 [2023-08-30 20:38:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:42,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123541880] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:38:42,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:38:42,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-08-30 20:38:42,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241100789] [2023-08-30 20:38:42,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:38:42,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 20:38:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:38:42,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 20:38:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-08-30 20:38:43,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-30 20:38:43,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 321 transitions, 2430 flow. Second operand has 31 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 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) [2023-08-30 20:38:43,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:38:43,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-30 20:38:43,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:38:45,280 INFO L130 PetriNetUnfolder]: 3091/4725 cut-off events. [2023-08-30 20:38:45,280 INFO L131 PetriNetUnfolder]: For 20115/20115 co-relation queries the response was YES. [2023-08-30 20:38:45,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22519 conditions, 4725 events. 3091/4725 cut-off events. For 20115/20115 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24498 event pairs, 512 based on Foata normal form. 1/4717 useless extension candidates. Maximal degree in co-relation 22443. Up to 3936 conditions per place. [2023-08-30 20:38:45,318 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 280 selfloop transitions, 178 changer transitions 1/459 dead transitions. [2023-08-30 20:38:45,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 459 transitions, 4361 flow [2023-08-30 20:38:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 20:38:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 20:38:45,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1880 transitions. [2023-08-30 20:38:45,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328611898016997 [2023-08-30 20:38:45,324 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1880 transitions. [2023-08-30 20:38:45,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1880 transitions. [2023-08-30 20:38:45,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:38:45,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1880 transitions. [2023-08-30 20:38:45,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 117.5) internal successors, (1880), 16 states have internal predecessors, (1880), 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) [2023-08-30 20:38:45,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-08-30 20:38:45,336 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-08-30 20:38:45,336 INFO L175 Difference]: Start difference. First operand has 138 places, 321 transitions, 2430 flow. Second operand 16 states and 1880 transitions. [2023-08-30 20:38:45,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 459 transitions, 4361 flow [2023-08-30 20:38:45,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 459 transitions, 4023 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-08-30 20:38:45,433 INFO L231 Difference]: Finished difference. Result has 151 places, 403 transitions, 3362 flow [2023-08-30 20:38:45,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3362, PETRI_PLACES=151, PETRI_TRANSITIONS=403} [2023-08-30 20:38:45,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2023-08-30 20:38:45,434 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 403 transitions, 3362 flow [2023-08-30 20:38:45,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 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) [2023-08-30 20:38:45,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:38:45,436 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] [2023-08-30 20:38:45,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 20:38:45,644 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 [2023-08-30 20:38:45,644 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)] === [2023-08-30 20:38:45,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:38:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1906045491, now seen corresponding path program 4 times [2023-08-30 20:38:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:38:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023527102] [2023-08-30 20:38:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:38:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:38:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:38:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:38:47,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:38:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023527102] [2023-08-30 20:38:47,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023527102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:38:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540951113] [2023-08-30 20:38:47,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:38:47,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:38:47,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:38:47,042 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) [2023-08-30 20:38:47,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 20:38:47,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:38:47,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:38:47,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-30 20:38:47,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:38:47,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:38:47,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-08-30 20:38:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:47,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:38:47,723 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:38:47,724 INFO L350 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 41 treesize of output 86 [2023-08-30 20:38:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540951113] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:38:48,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:38:48,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-08-30 20:38:48,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934101228] [2023-08-30 20:38:48,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:38:48,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 20:38:48,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:38:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 20:38:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-08-30 20:38:49,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-30 20:38:49,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 403 transitions, 3362 flow. Second operand has 31 states, 31 states have (on average 112.83870967741936) internal successors, (3498), 31 states have internal predecessors, (3498), 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) [2023-08-30 20:38:49,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:38:49,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-30 20:38:49,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:38:51,203 INFO L130 PetriNetUnfolder]: 3211/4940 cut-off events. [2023-08-30 20:38:51,203 INFO L131 PetriNetUnfolder]: For 25595/25595 co-relation queries the response was YES. [2023-08-30 20:38:51,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24901 conditions, 4940 events. 3211/4940 cut-off events. For 25595/25595 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26145 event pairs, 523 based on Foata normal form. 1/4933 useless extension candidates. Maximal degree in co-relation 24772. Up to 4245 conditions per place. [2023-08-30 20:38:51,248 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 281 selfloop transitions, 239 changer transitions 6/526 dead transitions. [2023-08-30 20:38:51,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 526 transitions, 5497 flow [2023-08-30 20:38:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 20:38:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 20:38:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1980 transitions. [2023-08-30 20:38:51,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32994500916513914 [2023-08-30 20:38:51,253 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1980 transitions. [2023-08-30 20:38:51,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1980 transitions. [2023-08-30 20:38:51,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:38:51,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1980 transitions. [2023-08-30 20:38:51,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.47058823529412) internal successors, (1980), 17 states have internal predecessors, (1980), 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) [2023-08-30 20:38:51,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 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) [2023-08-30 20:38:51,265 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 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) [2023-08-30 20:38:51,265 INFO L175 Difference]: Start difference. First operand has 151 places, 403 transitions, 3362 flow. Second operand 17 states and 1980 transitions. [2023-08-30 20:38:51,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 526 transitions, 5497 flow [2023-08-30 20:38:51,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 526 transitions, 5368 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-08-30 20:38:51,387 INFO L231 Difference]: Finished difference. Result has 167 places, 489 transitions, 4810 flow [2023-08-30 20:38:51,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4810, PETRI_PLACES=167, PETRI_TRANSITIONS=489} [2023-08-30 20:38:51,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2023-08-30 20:38:51,388 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 489 transitions, 4810 flow [2023-08-30 20:38:51,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.83870967741936) internal successors, (3498), 31 states have internal predecessors, (3498), 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) [2023-08-30 20:38:51,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:38:51,389 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] [2023-08-30 20:38:51,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 20:38:51,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:38:51,595 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)] === [2023-08-30 20:38:51,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:38:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1960108977, now seen corresponding path program 5 times [2023-08-30 20:38:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:38:51,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255268499] [2023-08-30 20:38:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:38:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:38:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:38:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:38:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:38:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255268499] [2023-08-30 20:38:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255268499] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:38:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643233159] [2023-08-30 20:38:53,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:38:53,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:38:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:38:53,031 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) [2023-08-30 20:38:53,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 20:38:53,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:38:53,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:38:53,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-30 20:38:53,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:38:53,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:38:53,537 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-08-30 20:38:53,537 INFO L350 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 31 treesize of output 25 [2023-08-30 20:38:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:53,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:38:53,655 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:38:53,655 INFO L350 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 41 treesize of output 86 [2023-08-30 20:38:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:38:54,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643233159] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:38:54,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:38:54,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-08-30 20:38:54,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610013946] [2023-08-30 20:38:54,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:38:54,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 20:38:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:38:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 20:38:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-08-30 20:38:56,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-30 20:38:56,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 489 transitions, 4810 flow. Second operand has 30 states, 30 states have (on average 114.03333333333333) internal successors, (3421), 30 states have internal predecessors, (3421), 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) [2023-08-30 20:38:56,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:38:56,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-30 20:38:56,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:38:59,594 INFO L130 PetriNetUnfolder]: 4979/7630 cut-off events. [2023-08-30 20:38:59,594 INFO L131 PetriNetUnfolder]: For 46355/46355 co-relation queries the response was YES. [2023-08-30 20:38:59,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40374 conditions, 7630 events. 4979/7630 cut-off events. For 46355/46355 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 43784 event pairs, 508 based on Foata normal form. 5/7627 useless extension candidates. Maximal degree in co-relation 40161. Up to 2317 conditions per place. [2023-08-30 20:38:59,654 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 345 selfloop transitions, 531 changer transitions 17/893 dead transitions. [2023-08-30 20:38:59,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 893 transitions, 9731 flow [2023-08-30 20:38:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-30 20:38:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-30 20:38:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 5132 transitions. [2023-08-30 20:38:59,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33809868897819356 [2023-08-30 20:38:59,662 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 5132 transitions. [2023-08-30 20:38:59,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 5132 transitions. [2023-08-30 20:38:59,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:38:59,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 5132 transitions. [2023-08-30 20:38:59,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 119.34883720930233) internal successors, (5132), 43 states have internal predecessors, (5132), 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) [2023-08-30 20:38:59,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 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) [2023-08-30 20:38:59,686 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 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) [2023-08-30 20:38:59,686 INFO L175 Difference]: Start difference. First operand has 167 places, 489 transitions, 4810 flow. Second operand 43 states and 5132 transitions. [2023-08-30 20:38:59,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 893 transitions, 9731 flow [2023-08-30 20:38:59,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 893 transitions, 9446 flow, removed 111 selfloop flow, removed 5 redundant places. [2023-08-30 20:38:59,958 INFO L231 Difference]: Finished difference. Result has 220 places, 681 transitions, 8172 flow [2023-08-30 20:38:59,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8172, PETRI_PLACES=220, PETRI_TRANSITIONS=681} [2023-08-30 20:38:59,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2023-08-30 20:38:59,960 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 681 transitions, 8172 flow [2023-08-30 20:38:59,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 114.03333333333333) internal successors, (3421), 30 states have internal predecessors, (3421), 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) [2023-08-30 20:38:59,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:38:59,961 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] [2023-08-30 20:38:59,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 20:39:00,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:39:00,167 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)] === [2023-08-30 20:39:00,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:39:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash -555652735, now seen corresponding path program 6 times [2023-08-30 20:39:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:39:00,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513684585] [2023-08-30 20:39:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:39:00,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:39:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:39:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:39:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:39:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513684585] [2023-08-30 20:39:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513684585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:39:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238818607] [2023-08-30 20:39:01,145 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:39:01,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:39:01,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:39:01,149 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) [2023-08-30 20:39:01,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 20:39:01,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 20:39:01,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:39:01,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-30 20:39:01,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:39:01,868 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-30 20:39:01,868 INFO L350 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 31 treesize of output 43 [2023-08-30 20:39:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:39:01,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:39:02,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:02,046 INFO L350 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 41 treesize of output 86 [2023-08-30 20:39:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:39:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238818607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:39:02,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:39:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-08-30 20:39:02,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491824220] [2023-08-30 20:39:02,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:39:02,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 20:39:02,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:39:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 20:39:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 20:39:04,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 353 [2023-08-30 20:39:04,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 681 transitions, 8172 flow. Second operand has 34 states, 34 states have (on average 112.82352941176471) internal successors, (3836), 34 states have internal predecessors, (3836), 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) [2023-08-30 20:39:04,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:39:04,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 353 [2023-08-30 20:39:04,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:39:08,666 INFO L130 PetriNetUnfolder]: 7403/11343 cut-off events. [2023-08-30 20:39:08,666 INFO L131 PetriNetUnfolder]: For 79052/79052 co-relation queries the response was YES. [2023-08-30 20:39:08,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66375 conditions, 11343 events. 7403/11343 cut-off events. For 79052/79052 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 69831 event pairs, 394 based on Foata normal form. 2/11343 useless extension candidates. Maximal degree in co-relation 66177. Up to 4430 conditions per place. [2023-08-30 20:39:08,793 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 516 selfloop transitions, 735 changer transitions 10/1261 dead transitions. [2023-08-30 20:39:08,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1261 transitions, 16505 flow [2023-08-30 20:39:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 20:39:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 20:39:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4621 transitions. [2023-08-30 20:39:08,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356577322582988 [2023-08-30 20:39:08,801 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4621 transitions. [2023-08-30 20:39:08,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4621 transitions. [2023-08-30 20:39:08,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:39:08,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4621 transitions. [2023-08-30 20:39:08,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 118.48717948717949) internal successors, (4621), 39 states have internal predecessors, (4621), 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) [2023-08-30 20:39:08,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 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) [2023-08-30 20:39:08,823 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 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) [2023-08-30 20:39:08,824 INFO L175 Difference]: Start difference. First operand has 220 places, 681 transitions, 8172 flow. Second operand 39 states and 4621 transitions. [2023-08-30 20:39:08,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1261 transitions, 16505 flow [2023-08-30 20:39:09,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1261 transitions, 15629 flow, removed 331 selfloop flow, removed 14 redundant places. [2023-08-30 20:39:09,571 INFO L231 Difference]: Finished difference. Result has 266 places, 1071 transitions, 14974 flow [2023-08-30 20:39:09,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14974, PETRI_PLACES=266, PETRI_TRANSITIONS=1071} [2023-08-30 20:39:09,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2023-08-30 20:39:09,572 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1071 transitions, 14974 flow [2023-08-30 20:39:09,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 112.82352941176471) internal successors, (3836), 34 states have internal predecessors, (3836), 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) [2023-08-30 20:39:09,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:39:09,573 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] [2023-08-30 20:39:09,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 20:39:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:39:09,779 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)] === [2023-08-30 20:39:09,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:39:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 539869495, now seen corresponding path program 7 times [2023-08-30 20:39:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:39:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548006828] [2023-08-30 20:39:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:39:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:39:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:39:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:39:11,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:39:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548006828] [2023-08-30 20:39:11,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548006828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:39:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284379980] [2023-08-30 20:39:11,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:39:11,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:39:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:39:11,134 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) [2023-08-30 20:39:11,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 20:39:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:39:11,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-30 20:39:11,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:39:11,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:39:11,621 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-08-30 20:39:11,621 INFO L350 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 31 treesize of output 25 [2023-08-30 20:39:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:39:11,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:39:11,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:11,737 INFO L350 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 41 treesize of output 86 [2023-08-30 20:39:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:39:12,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284379980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:39:12,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:39:12,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-08-30 20:39:12,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408992559] [2023-08-30 20:39:12,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:39:12,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 20:39:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:39:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 20:39:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-08-30 20:39:13,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-30 20:39:13,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1071 transitions, 14974 flow. Second operand has 30 states, 30 states have (on average 114.0) internal successors, (3420), 30 states have internal predecessors, (3420), 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) [2023-08-30 20:39:13,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:39:13,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-30 20:39:13,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:39:18,353 INFO L130 PetriNetUnfolder]: 7704/11866 cut-off events. [2023-08-30 20:39:18,353 INFO L131 PetriNetUnfolder]: For 127931/127931 co-relation queries the response was YES. [2023-08-30 20:39:18,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80676 conditions, 11866 events. 7704/11866 cut-off events. For 127931/127931 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 73630 event pairs, 1190 based on Foata normal form. 2/11866 useless extension candidates. Maximal degree in co-relation 80197. Up to 9995 conditions per place. [2023-08-30 20:39:18,487 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 792 selfloop transitions, 436 changer transitions 3/1231 dead transitions. [2023-08-30 20:39:18,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1231 transitions, 19249 flow [2023-08-30 20:39:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 20:39:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 20:39:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3556 transitions. [2023-08-30 20:39:18,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33578847969782816 [2023-08-30 20:39:18,494 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3556 transitions. [2023-08-30 20:39:18,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3556 transitions. [2023-08-30 20:39:18,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:39:18,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3556 transitions. [2023-08-30 20:39:18,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 118.53333333333333) internal successors, (3556), 30 states have internal predecessors, (3556), 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) [2023-08-30 20:39:18,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-08-30 20:39:18,512 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-08-30 20:39:18,512 INFO L175 Difference]: Start difference. First operand has 266 places, 1071 transitions, 14974 flow. Second operand 30 states and 3556 transitions. [2023-08-30 20:39:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1231 transitions, 19249 flow [2023-08-30 20:39:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1231 transitions, 18908 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-08-30 20:39:19,725 INFO L231 Difference]: Finished difference. Result has 288 places, 1115 transitions, 16568 flow [2023-08-30 20:39:19,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=14641, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16568, PETRI_PLACES=288, PETRI_TRANSITIONS=1115} [2023-08-30 20:39:19,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2023-08-30 20:39:19,727 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1115 transitions, 16568 flow [2023-08-30 20:39:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 114.0) internal successors, (3420), 30 states have internal predecessors, (3420), 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) [2023-08-30 20:39:19,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:39:19,728 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] [2023-08-30 20:39:19,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 20:39:19,933 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,SelfDestructingSolverStorable9 [2023-08-30 20:39:19,933 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)] === [2023-08-30 20:39:19,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:39:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash -680043111, now seen corresponding path program 8 times [2023-08-30 20:39:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:39:19,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894726312] [2023-08-30 20:39:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:39:19,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:39:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:39:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:39:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:39:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894726312] [2023-08-30 20:39:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894726312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:39:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974291539] [2023-08-30 20:39:21,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:39:21,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:39:21,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:39:21,429 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) [2023-08-30 20:39:21,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 20:39:21,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:39:21,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:39:21,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-30 20:39:21,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:39:21,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 20:39:21,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:39:22,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:39:22,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:39:22,095 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 20:39:22,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-30 20:39:22,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:39:22,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:39:22,170 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 20:39:22,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-08-30 20:39:22,307 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-30 20:39:22,307 INFO L350 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 31 treesize of output 43 [2023-08-30 20:39:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:39:22,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:39:24,565 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int))) (or (<= c_~N~0 ~M~0) (= c_~res1~0 (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-08-30 20:39:26,596 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (or (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-08-30 20:39:34,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:34,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 70 [2023-08-30 20:39:34,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:34,342 INFO L350 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 38390 treesize of output 32314 [2023-08-30 20:39:34,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:34,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2006 treesize of output 1822 [2023-08-30 20:39:34,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:34,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1814 treesize of output 1438 [2023-08-30 20:39:34,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:39:34,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 1262 [2023-08-30 20:40:06,563 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:06,796 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:07,953 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:08,087 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:08,142 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:08,427 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:08,516 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:08,585 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:08,685 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:08,729 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:08,767 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:08,832 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:08,886 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:08,923 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:09,000 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:09,124 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:09,968 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:09,984 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:10,436 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:10,603 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:10,707 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:10,816 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:10,927 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:11,018 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:11,119 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:11,310 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:11,616 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:11,750 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:11,916 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:12,208 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:13,073 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:13,206 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:13,524 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:13,667 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:13,827 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:14,133 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:14,284 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:14,339 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:14,495 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:14,570 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:14,741 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:14,884 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:15,180 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:15,495 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:15,677 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:15,808 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:16,130 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:16,245 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:16,323 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:16,572 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:16,840 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:16,989 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:17,310 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:17,573 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:17,739 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:17,891 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:18,212 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:18,450 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:19,197 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:19,891 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:20,305 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:20,686 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:40:22,295 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:22,994 WARN L718 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-08-30 20:40:26,715 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:40:28,273 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:28,954 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:40:30,712 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:31,021 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:31,734 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:31,995 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:32,124 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:32,410 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:32,682 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:33,357 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:33,499 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:33,551 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:33,675 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:33,736 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:33,881 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:34,017 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:34,131 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:34,580 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:35,244 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:35,517 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:35,825 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:40:37,392 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:38,084 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:38,355 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:40:39,025 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:39,319 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:39,368 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:39,492 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:39,867 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:39,955 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:40,064 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:40,313 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:40,410 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:40,570 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:40,650 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:40,667 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:40,794 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:41,015 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:41,035 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:41,100 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:41,164 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:41,297 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:41,461 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:41,573 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:41,744 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:41,896 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:42,280 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:42,416 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:42,535 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:42,569 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:42,610 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:42,636 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:42,708 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:42,751 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:42,791 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:42,806 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:42,995 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:43,027 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,083 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:43,146 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:43,319 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:43,378 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,419 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,483 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:43,552 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,592 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,681 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,716 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:43,789 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:43,855 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:43,898 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:43,978 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:44,014 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:44,044 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:44,418 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:45,738 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:45,789 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:46,525 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:47,576 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:47,637 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:47,652 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:47,678 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:47,701 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:47,719 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:47,731 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:47,763 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:47,812 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:47,830 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:48,453 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:55,987 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:56,108 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:57,073 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:57,154 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:57,736 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:57,835 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:58,115 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:58,343 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:58,414 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:58,447 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:40:58,462 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:58,590 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:58,898 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:58,984 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:58,999 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:40:59,040 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:40:59,092 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:40:59,214 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:59,489 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:40:59,784 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:40:59,910 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:00,034 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:00,220 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:00,346 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:00,460 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:00,650 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:00,669 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:00,757 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:00,776 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:00,876 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:01,084 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:01,105 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:01,171 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:01,227 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:01,446 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:01,500 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:01,522 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:01,607 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:01,708 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:01,737 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:01,912 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:01,967 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:02,135 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:02,438 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:02,733 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:41:02,794 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:02,943 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:03,006 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:03,047 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:03,517 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:03,694 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:03,850 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:04,644 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:41:06,252 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:41:07,886 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:41:09,600 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-08-30 20:41:10,305 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-08-30 20:41:10,392 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:10,712 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:11,015 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:11,408 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:11,458 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:11,741 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:12,077 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:12,179 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:12,392 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:12,772 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:13,197 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:13,289 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:13,362 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:13,388 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:13,779 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:13,803 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:13,874 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:13,885 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:14,135 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:14,228 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:14,263 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:14,337 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:14,722 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:14,844 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:14,935 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:15,368 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:15,380 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:16,011 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:16,046 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:17,993 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:18,017 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:18,116 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:18,449 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:18,462 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:18,478 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:18,892 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:19,362 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:19,376 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:19,390 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:19,693 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:19,728 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:19,765 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:19,921 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-08-30 20:41:19,944 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:20,064 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:20,184 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-08-30 20:41:20,322 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:20,450 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:20,506 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:20,577 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:20,832 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:20,872 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:20,912 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:20,941 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:20,970 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:21,022 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:21,054 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:23,498 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:23,513 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:23,536 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-30 20:41:23,611 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:23,674 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:23,700 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:23,973 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:25,467 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:25,483 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:25,508 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:25,609 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:25,649 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:25,681 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-30 20:41:25,722 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-30 20:41:25,739 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:25,779 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:27,814 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:28,137 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:41:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 20:41:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974291539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:41:44,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:41:44,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 33 [2023-08-30 20:41:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610150996] [2023-08-30 20:41:44,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:41:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-30 20:41:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-30 20:41:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=925, Unknown=19, NotChecked=126, Total=1190 [2023-08-30 20:41:44,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-08-30 20:41:44,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1115 transitions, 16568 flow. Second operand has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 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) [2023-08-30 20:41:44,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:44,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-08-30 20:41:44,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:41:51,764 INFO L130 PetriNetUnfolder]: 8812/13691 cut-off events. [2023-08-30 20:41:51,764 INFO L131 PetriNetUnfolder]: For 151268/151268 co-relation queries the response was YES. [2023-08-30 20:41:51,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94097 conditions, 13691 events. 8812/13691 cut-off events. For 151268/151268 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 89378 event pairs, 671 based on Foata normal form. 8/13697 useless extension candidates. Maximal degree in co-relation 93746. Up to 7849 conditions per place. [2023-08-30 20:41:51,873 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 719 selfloop transitions, 774 changer transitions 11/1504 dead transitions. [2023-08-30 20:41:51,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1504 transitions, 24011 flow [2023-08-30 20:41:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 20:41:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 20:41:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2355 transitions. [2023-08-30 20:41:51,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25659185007626933 [2023-08-30 20:41:51,883 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2355 transitions. [2023-08-30 20:41:51,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2355 transitions. [2023-08-30 20:41:51,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:41:51,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2355 transitions. [2023-08-30 20:41:51,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 90.57692307692308) internal successors, (2355), 26 states have internal predecessors, (2355), 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) [2023-08-30 20:41:51,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 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) [2023-08-30 20:41:51,893 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 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) [2023-08-30 20:41:51,893 INFO L175 Difference]: Start difference. First operand has 288 places, 1115 transitions, 16568 flow. Second operand 26 states and 2355 transitions. [2023-08-30 20:41:51,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1504 transitions, 24011 flow [2023-08-30 20:41:53,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1504 transitions, 23736 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-08-30 20:41:53,367 INFO L231 Difference]: Finished difference. Result has 309 places, 1263 transitions, 20815 flow [2023-08-30 20:41:53,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16298, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20815, PETRI_PLACES=309, PETRI_TRANSITIONS=1263} [2023-08-30 20:41:53,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2023-08-30 20:41:53,368 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1263 transitions, 20815 flow [2023-08-30 20:41:53,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 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) [2023-08-30 20:41:53,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:41:53,369 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] [2023-08-30 20:41:53,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 20:41:53,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:53,570 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)] === [2023-08-30 20:41:53,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:41:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2060531317, now seen corresponding path program 9 times [2023-08-30 20:41:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:41:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157813792] [2023-08-30 20:41:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:41:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:41:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:41:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:41:54,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:41:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157813792] [2023-08-30 20:41:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157813792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:41:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800471571] [2023-08-30 20:41:54,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:41:54,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:41:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:41:54,680 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) [2023-08-30 20:41:54,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 20:41:54,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 20:41:54,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:41:54,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-30 20:41:54,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:41:55,226 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-30 20:41:55,226 INFO L350 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 31 treesize of output 43 [2023-08-30 20:41:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:41:55,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:41:55,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:41:55,415 INFO L350 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 33 treesize of output 78 [2023-08-30 20:41:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:41:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800471571] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:41:55,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:41:55,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-08-30 20:41:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584342402] [2023-08-30 20:41:55,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:41:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-30 20:41:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:41:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-30 20:41:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-08-30 20:41:58,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-30 20:41:58,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1263 transitions, 20815 flow. Second operand has 34 states, 34 states have (on average 113.91176470588235) internal successors, (3873), 34 states have internal predecessors, (3873), 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) [2023-08-30 20:41:58,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:41:58,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-30 20:41:58,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:42:04,425 INFO L130 PetriNetUnfolder]: 9416/14648 cut-off events. [2023-08-30 20:42:04,425 INFO L131 PetriNetUnfolder]: For 227922/227922 co-relation queries the response was YES. [2023-08-30 20:42:04,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113911 conditions, 14648 events. 9416/14648 cut-off events. For 227922/227922 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 96009 event pairs, 1286 based on Foata normal form. 3/14650 useless extension candidates. Maximal degree in co-relation 113442. Up to 11621 conditions per place. [2023-08-30 20:42:04,649 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 948 selfloop transitions, 580 changer transitions 10/1538 dead transitions. [2023-08-30 20:42:04,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1538 transitions, 27718 flow [2023-08-30 20:42:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 20:42:04,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 20:42:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4382 transitions. [2023-08-30 20:42:04,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33550264145164993 [2023-08-30 20:42:04,654 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4382 transitions. [2023-08-30 20:42:04,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4382 transitions. [2023-08-30 20:42:04,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:42:04,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4382 transitions. [2023-08-30 20:42:04,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 118.43243243243244) internal successors, (4382), 37 states have internal predecessors, (4382), 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) [2023-08-30 20:42:04,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 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) [2023-08-30 20:42:04,669 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 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) [2023-08-30 20:42:04,670 INFO L175 Difference]: Start difference. First operand has 309 places, 1263 transitions, 20815 flow. Second operand 37 states and 4382 transitions. [2023-08-30 20:42:04,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1538 transitions, 27718 flow [2023-08-30 20:42:06,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1538 transitions, 27016 flow, removed 166 selfloop flow, removed 12 redundant places. [2023-08-30 20:42:06,894 INFO L231 Difference]: Finished difference. Result has 345 places, 1401 transitions, 24282 flow [2023-08-30 20:42:06,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20183, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=24282, PETRI_PLACES=345, PETRI_TRANSITIONS=1401} [2023-08-30 20:42:06,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-08-30 20:42:06,896 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 1401 transitions, 24282 flow [2023-08-30 20:42:06,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.91176470588235) internal successors, (3873), 34 states have internal predecessors, (3873), 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) [2023-08-30 20:42:06,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:42:06,897 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] [2023-08-30 20:42:06,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 20:42:07,103 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,SelfDestructingSolverStorable11 [2023-08-30 20:42:07,103 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)] === [2023-08-30 20:42:07,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:42:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash 952548253, now seen corresponding path program 10 times [2023-08-30 20:42:07,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:42:07,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312489108] [2023-08-30 20:42:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:42:07,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:42:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:42:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:42:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:42:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312489108] [2023-08-30 20:42:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312489108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:42:08,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319682328] [2023-08-30 20:42:08,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:42:08,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:42:08,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:42:08,011 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) [2023-08-30 20:42:08,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 20:42:08,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:42:08,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:42:08,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-30 20:42:08,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:42:08,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:42:08,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-08-30 20:42:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:08,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:42:08,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:42:08,537 INFO L350 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 33 treesize of output 78 [2023-08-30 20:42:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319682328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:42:08,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:42:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-08-30 20:42:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854575422] [2023-08-30 20:42:08,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:42:08,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 20:42:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:42:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 20:42:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-08-30 20:42:10,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 353 [2023-08-30 20:42:10,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1401 transitions, 24282 flow. Second operand has 31 states, 31 states have (on average 113.87096774193549) internal successors, (3530), 31 states have internal predecessors, (3530), 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) [2023-08-30 20:42:10,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:42:10,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 353 [2023-08-30 20:42:10,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:42:15,238 INFO L130 PetriNetUnfolder]: 9502/14834 cut-off events. [2023-08-30 20:42:15,238 INFO L131 PetriNetUnfolder]: For 239366/239366 co-relation queries the response was YES. [2023-08-30 20:42:15,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118370 conditions, 14834 events. 9502/14834 cut-off events. For 239366/239366 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 97989 event pairs, 1587 based on Foata normal form. 3/14835 useless extension candidates. Maximal degree in co-relation 117913. Up to 13724 conditions per place. [2023-08-30 20:42:15,383 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 1074 selfloop transitions, 398 changer transitions 13/1485 dead transitions. [2023-08-30 20:42:15,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1485 transitions, 28475 flow [2023-08-30 20:42:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 20:42:15,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 20:42:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2122 transitions. [2023-08-30 20:42:15,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3339628580421782 [2023-08-30 20:42:15,387 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2122 transitions. [2023-08-30 20:42:15,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2122 transitions. [2023-08-30 20:42:15,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:42:15,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2122 transitions. [2023-08-30 20:42:15,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 117.88888888888889) internal successors, (2122), 18 states have internal predecessors, (2122), 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) [2023-08-30 20:42:15,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-08-30 20:42:15,395 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-08-30 20:42:15,396 INFO L175 Difference]: Start difference. First operand has 345 places, 1401 transitions, 24282 flow. Second operand 18 states and 2122 transitions. [2023-08-30 20:42:15,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1485 transitions, 28475 flow [2023-08-30 20:42:18,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1485 transitions, 27518 flow, removed 445 selfloop flow, removed 10 redundant places. [2023-08-30 20:42:18,099 INFO L231 Difference]: Finished difference. Result has 359 places, 1440 transitions, 25164 flow [2023-08-30 20:42:18,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=23457, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25164, PETRI_PLACES=359, PETRI_TRANSITIONS=1440} [2023-08-30 20:42:18,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2023-08-30 20:42:18,101 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1440 transitions, 25164 flow [2023-08-30 20:42:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 113.87096774193549) internal successors, (3530), 31 states have internal predecessors, (3530), 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) [2023-08-30 20:42:18,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:42:18,102 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] [2023-08-30 20:42:18,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 20:42:18,306 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,SelfDestructingSolverStorable12 [2023-08-30 20:42:18,307 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)] === [2023-08-30 20:42:18,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:42:18,307 INFO L85 PathProgramCache]: Analyzing trace with hash -70647383, now seen corresponding path program 11 times [2023-08-30 20:42:18,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:42:18,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208679214] [2023-08-30 20:42:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:42:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:42:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:42:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:42:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:42:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208679214] [2023-08-30 20:42:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208679214] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:42:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507661579] [2023-08-30 20:42:19,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:42:19,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:42:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:42:19,142 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) [2023-08-30 20:42:19,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 20:42:19,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:42:19,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:42:19,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 61 conjunts are in the unsatisfiable core [2023-08-30 20:42:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:42:19,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:42:19,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-08-30 20:42:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:19,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:42:19,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:42:19,656 INFO L350 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 33 treesize of output 78 [2023-08-30 20:42:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507661579] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:42:19,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:42:19,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2023-08-30 20:42:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531344607] [2023-08-30 20:42:19,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:42:19,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 20:42:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:42:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 20:42:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-08-30 20:42:21,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 353 [2023-08-30 20:42:21,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1440 transitions, 25164 flow. Second operand has 28 states, 28 states have (on average 116.10714285714286) internal successors, (3251), 28 states have internal predecessors, (3251), 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) [2023-08-30 20:42:21,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:42:21,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 353 [2023-08-30 20:42:21,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:42:28,504 INFO L130 PetriNetUnfolder]: 9706/15166 cut-off events. [2023-08-30 20:42:28,505 INFO L131 PetriNetUnfolder]: For 226667/226667 co-relation queries the response was YES. [2023-08-30 20:42:28,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118405 conditions, 15166 events. 9706/15166 cut-off events. For 226667/226667 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 100694 event pairs, 1485 based on Foata normal form. 3/15169 useless extension candidates. Maximal degree in co-relation 117948. Up to 11569 conditions per place. [2023-08-30 20:42:28,649 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 886 selfloop transitions, 684 changer transitions 9/1579 dead transitions. [2023-08-30 20:42:28,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1579 transitions, 29964 flow [2023-08-30 20:42:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 20:42:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 20:42:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3613 transitions. [2023-08-30 20:42:28,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411709159584514 [2023-08-30 20:42:28,653 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3613 transitions. [2023-08-30 20:42:28,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3613 transitions. [2023-08-30 20:42:28,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:42:28,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3613 transitions. [2023-08-30 20:42:28,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 120.43333333333334) internal successors, (3613), 30 states have internal predecessors, (3613), 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) [2023-08-30 20:42:28,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-08-30 20:42:28,666 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 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) [2023-08-30 20:42:28,666 INFO L175 Difference]: Start difference. First operand has 359 places, 1440 transitions, 25164 flow. Second operand 30 states and 3613 transitions. [2023-08-30 20:42:28,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1579 transitions, 29964 flow [2023-08-30 20:42:30,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1579 transitions, 29495 flow, removed 53 selfloop flow, removed 9 redundant places. [2023-08-30 20:42:30,980 INFO L231 Difference]: Finished difference. Result has 384 places, 1475 transitions, 27023 flow [2023-08-30 20:42:30,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=24699, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=27023, PETRI_PLACES=384, PETRI_TRANSITIONS=1475} [2023-08-30 20:42:30,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2023-08-30 20:42:30,981 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1475 transitions, 27023 flow [2023-08-30 20:42:30,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 116.10714285714286) internal successors, (3251), 28 states have internal predecessors, (3251), 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) [2023-08-30 20:42:30,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:42:30,982 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] [2023-08-30 20:42:30,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-30 20:42:31,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 20:42:31,182 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)] === [2023-08-30 20:42:31,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:42:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 466247267, now seen corresponding path program 12 times [2023-08-30 20:42:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:42:31,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679008691] [2023-08-30 20:42:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:42:31,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:42:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:42:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:42:32,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:42:32,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679008691] [2023-08-30 20:42:32,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679008691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:42:32,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394659236] [2023-08-30 20:42:32,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:42:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:42:32,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:42:32,349 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) [2023-08-30 20:42:32,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 20:42:32,458 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:42:32,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:42:32,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-30 20:42:32,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:42:32,711 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-08-30 20:42:32,711 INFO L350 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 31 treesize of output 43 [2023-08-30 20:42:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:42:32,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:42:32,908 INFO L321 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2023-08-30 20:42:32,909 INFO L350 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 33 treesize of output 29 [2023-08-30 20:42:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:42:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394659236] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:42:32,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:42:32,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-08-30 20:42:32,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496440957] [2023-08-30 20:42:32,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:42:32,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 20:42:32,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:42:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 20:42:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-08-30 20:42:33,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 353 [2023-08-30 20:42:33,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1475 transitions, 27023 flow. Second operand has 26 states, 26 states have (on average 119.3076923076923) internal successors, (3102), 26 states have internal predecessors, (3102), 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) [2023-08-30 20:42:33,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:42:33,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 353 [2023-08-30 20:42:33,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:42:39,806 INFO L130 PetriNetUnfolder]: 9654/15192 cut-off events. [2023-08-30 20:42:39,806 INFO L131 PetriNetUnfolder]: For 246755/247378 co-relation queries the response was YES. [2023-08-30 20:42:39,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123027 conditions, 15192 events. 9654/15192 cut-off events. For 246755/247378 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 103750 event pairs, 1150 based on Foata normal form. 256/15343 useless extension candidates. Maximal degree in co-relation 122546. Up to 8903 conditions per place. [2023-08-30 20:42:40,007 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 836 selfloop transitions, 832 changer transitions 11/1727 dead transitions. [2023-08-30 20:42:40,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1727 transitions, 34217 flow [2023-08-30 20:42:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 20:42:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 20:42:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2845 transitions. [2023-08-30 20:42:40,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504126123906885 [2023-08-30 20:42:40,012 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2845 transitions. [2023-08-30 20:42:40,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2845 transitions. [2023-08-30 20:42:40,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:42:40,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2845 transitions. [2023-08-30 20:42:40,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 123.69565217391305) internal successors, (2845), 23 states have internal predecessors, (2845), 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) [2023-08-30 20:42:40,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 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) [2023-08-30 20:42:40,023 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 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) [2023-08-30 20:42:40,023 INFO L175 Difference]: Start difference. First operand has 384 places, 1475 transitions, 27023 flow. Second operand 23 states and 2845 transitions. [2023-08-30 20:42:40,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1727 transitions, 34217 flow [2023-08-30 20:42:42,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1727 transitions, 33332 flow, removed 130 selfloop flow, removed 18 redundant places. [2023-08-30 20:42:42,794 INFO L231 Difference]: Finished difference. Result has 394 places, 1617 transitions, 31101 flow [2023-08-30 20:42:42,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26236, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=31101, PETRI_PLACES=394, PETRI_TRANSITIONS=1617} [2023-08-30 20:42:42,796 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2023-08-30 20:42:42,796 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1617 transitions, 31101 flow [2023-08-30 20:42:42,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 119.3076923076923) internal successors, (3102), 26 states have internal predecessors, (3102), 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) [2023-08-30 20:42:42,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:42:42,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:42:42,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 20:42:43,002 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,SelfDestructingSolverStorable14 [2023-08-30 20:42:43,004 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)] === [2023-08-30 20:42:43,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:42:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -7374613, now seen corresponding path program 13 times [2023-08-30 20:42:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:42:43,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312878353] [2023-08-30 20:42:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:42:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:42:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:42:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:42:43,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:42:43,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312878353] [2023-08-30 20:42:43,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312878353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:42:43,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624476404] [2023-08-30 20:42:43,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:42:43,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:42:43,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:42:43,115 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) [2023-08-30 20:42:43,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 20:42:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:42:43,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:42:43,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:42:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:42:43,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:42:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:42:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624476404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:42:43,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:42:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 20:42:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401248514] [2023-08-30 20:42:43,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:42:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 20:42:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:42:43,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 20:42:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-30 20:42:43,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 353 [2023-08-30 20:42:43,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1617 transitions, 31101 flow. Second operand has 14 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 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) [2023-08-30 20:42:43,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:42:43,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 353 [2023-08-30 20:42:43,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:42:50,335 INFO L130 PetriNetUnfolder]: 11190/18524 cut-off events. [2023-08-30 20:42:50,335 INFO L131 PetriNetUnfolder]: For 386085/389081 co-relation queries the response was YES. [2023-08-30 20:42:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156674 conditions, 18524 events. 11190/18524 cut-off events. For 386085/389081 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 142503 event pairs, 2052 based on Foata normal form. 2194/20154 useless extension candidates. Maximal degree in co-relation 156536. Up to 6496 conditions per place. [2023-08-30 20:42:50,594 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1674 selfloop transitions, 202 changer transitions 21/1996 dead transitions. [2023-08-30 20:42:50,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1996 transitions, 42013 flow [2023-08-30 20:42:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 20:42:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 20:42:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1812 transitions. [2023-08-30 20:42:50,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42776203966005666 [2023-08-30 20:42:50,596 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1812 transitions. [2023-08-30 20:42:50,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1812 transitions. [2023-08-30 20:42:50,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:42:50,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1812 transitions. [2023-08-30 20:42:50,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.0) internal successors, (1812), 12 states have internal predecessors, (1812), 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) [2023-08-30 20:42:50,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 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) [2023-08-30 20:42:50,602 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 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) [2023-08-30 20:42:50,602 INFO L175 Difference]: Start difference. First operand has 394 places, 1617 transitions, 31101 flow. Second operand 12 states and 1812 transitions. [2023-08-30 20:42:50,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1996 transitions, 42013 flow [2023-08-30 20:42:54,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1996 transitions, 40945 flow, removed 233 selfloop flow, removed 18 redundant places. [2023-08-30 20:42:54,726 INFO L231 Difference]: Finished difference. Result has 385 places, 1344 transitions, 26255 flow [2023-08-30 20:42:54,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25198, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26255, PETRI_PLACES=385, PETRI_TRANSITIONS=1344} [2023-08-30 20:42:54,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2023-08-30 20:42:54,727 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1344 transitions, 26255 flow [2023-08-30 20:42:54,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 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) [2023-08-30 20:42:54,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:42:54,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:42:54,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 20:42:54,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:42:54,929 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)] === [2023-08-30 20:42:54,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:42:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash -556909332, now seen corresponding path program 14 times [2023-08-30 20:42:54,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:42:54,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668081178] [2023-08-30 20:42:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:42:54,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:42:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:42:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:55,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:42:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668081178] [2023-08-30 20:42:55,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668081178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:42:55,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794559704] [2023-08-30 20:42:55,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:42:55,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:42:55,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:42:55,057 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) [2023-08-30 20:42:55,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 20:42:55,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:42:55,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:42:55,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 20:42:55,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:42:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:55,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:42:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:42:55,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794559704] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:42:55,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:42:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 20:42:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075374436] [2023-08-30 20:42:55,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:42:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 20:42:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:42:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 20:42:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 20:42:55,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 353 [2023-08-30 20:42:55,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1344 transitions, 26255 flow. Second operand has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2023-08-30 20:42:55,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:42:55,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 353 [2023-08-30 20:42:55,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:01,810 INFO L130 PetriNetUnfolder]: 11048/18623 cut-off events. [2023-08-30 20:43:01,811 INFO L131 PetriNetUnfolder]: For 339007/340643 co-relation queries the response was YES. [2023-08-30 20:43:01,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149658 conditions, 18623 events. 11048/18623 cut-off events. For 339007/340643 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 147997 event pairs, 1831 based on Foata normal form. 1287/19715 useless extension candidates. Maximal degree in co-relation 149529. Up to 5357 conditions per place. [2023-08-30 20:43:02,014 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1351 selfloop transitions, 278 changer transitions 255/1970 dead transitions. [2023-08-30 20:43:02,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1970 transitions, 40594 flow [2023-08-30 20:43:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 20:43:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 20:43:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2066 transitions. [2023-08-30 20:43:02,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41804937272359366 [2023-08-30 20:43:02,016 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2066 transitions. [2023-08-30 20:43:02,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2066 transitions. [2023-08-30 20:43:02,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:02,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2066 transitions. [2023-08-30 20:43:02,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 147.57142857142858) internal successors, (2066), 14 states have internal predecessors, (2066), 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) [2023-08-30 20:43:02,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 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) [2023-08-30 20:43:02,022 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 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) [2023-08-30 20:43:02,022 INFO L175 Difference]: Start difference. First operand has 385 places, 1344 transitions, 26255 flow. Second operand 14 states and 2066 transitions. [2023-08-30 20:43:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1970 transitions, 40594 flow [2023-08-30 20:43:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1970 transitions, 40474 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-08-30 20:43:06,016 INFO L231 Difference]: Finished difference. Result has 395 places, 1254 transitions, 24755 flow [2023-08-30 20:43:06,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25321, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24755, PETRI_PLACES=395, PETRI_TRANSITIONS=1254} [2023-08-30 20:43:06,017 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-08-30 20:43:06,017 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1254 transitions, 24755 flow [2023-08-30 20:43:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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) [2023-08-30 20:43:06,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:43:06,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:43:06,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 20:43:06,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 20:43:06,227 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)] === [2023-08-30 20:43:06,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:43:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1941623595, now seen corresponding path program 15 times [2023-08-30 20:43:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:43:06,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138767789] [2023-08-30 20:43:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:43:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:06,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:43:06,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138767789] [2023-08-30 20:43:06,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138767789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:43:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398139606] [2023-08-30 20:43:06,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:43:06,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:43:06,325 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) [2023-08-30 20:43:06,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 20:43:06,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:43:06,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:43:06,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:43:06,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:43:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:06,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:43:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398139606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:43:06,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:43:06,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-30 20:43:06,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508179092] [2023-08-30 20:43:06,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:43:06,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 20:43:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:43:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 20:43:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-30 20:43:06,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 353 [2023-08-30 20:43:06,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1254 transitions, 24755 flow. Second operand has 14 states, 14 states have (on average 147.42857142857142) internal successors, (2064), 14 states have internal predecessors, (2064), 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) [2023-08-30 20:43:06,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:43:06,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 353 [2023-08-30 20:43:06,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:10,855 INFO L130 PetriNetUnfolder]: 7557/12853 cut-off events. [2023-08-30 20:43:10,855 INFO L131 PetriNetUnfolder]: For 265305/267628 co-relation queries the response was YES. [2023-08-30 20:43:10,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106012 conditions, 12853 events. 7557/12853 cut-off events. For 265305/267628 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 98923 event pairs, 2673 based on Foata normal form. 865/13011 useless extension candidates. Maximal degree in co-relation 105881. Up to 8468 conditions per place. [2023-08-30 20:43:11,002 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 1176 selfloop transitions, 11 changer transitions 11/1327 dead transitions. [2023-08-30 20:43:11,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1327 transitions, 27017 flow [2023-08-30 20:43:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 20:43:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 20:43:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1065 transitions. [2023-08-30 20:43:11,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309995953055443 [2023-08-30 20:43:11,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1065 transitions. [2023-08-30 20:43:11,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1065 transitions. [2023-08-30 20:43:11,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:11,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1065 transitions. [2023-08-30 20:43:11,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 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) [2023-08-30 20:43:11,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2023-08-30 20:43:11,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2023-08-30 20:43:11,005 INFO L175 Difference]: Start difference. First operand has 395 places, 1254 transitions, 24755 flow. Second operand 7 states and 1065 transitions. [2023-08-30 20:43:11,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1327 transitions, 27017 flow [2023-08-30 20:43:12,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1327 transitions, 26184 flow, removed 200 selfloop flow, removed 21 redundant places. [2023-08-30 20:43:12,796 INFO L231 Difference]: Finished difference. Result has 371 places, 1073 transitions, 19541 flow [2023-08-30 20:43:12,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19654, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19541, PETRI_PLACES=371, PETRI_TRANSITIONS=1073} [2023-08-30 20:43:12,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2023-08-30 20:43:12,798 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 1073 transitions, 19541 flow [2023-08-30 20:43:12,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 147.42857142857142) internal successors, (2064), 14 states have internal predecessors, (2064), 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) [2023-08-30 20:43:12,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:43:12,798 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, 1] [2023-08-30 20:43:12,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 20:43:12,999 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,SelfDestructingSolverStorable17 [2023-08-30 20:43:12,999 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)] === [2023-08-30 20:43:13,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:43:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1231118575, now seen corresponding path program 1 times [2023-08-30 20:43:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:43:13,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954324593] [2023-08-30 20:43:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:13,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:43:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:13,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:43:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954324593] [2023-08-30 20:43:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954324593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:43:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111692652] [2023-08-30 20:43:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:13,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:43:13,113 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) [2023-08-30 20:43:13,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 20:43:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:13,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:43:13,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:43:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:13,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:43:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111692652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:43:13,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:43:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 20:43:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10555009] [2023-08-30 20:43:13,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:43:13,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 20:43:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:43:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 20:43:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-08-30 20:43:13,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:43:13,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 1073 transitions, 19541 flow. Second operand has 17 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 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) [2023-08-30 20:43:13,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:43:13,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:43:13,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:19,959 INFO L130 PetriNetUnfolder]: 11072/18974 cut-off events. [2023-08-30 20:43:19,959 INFO L131 PetriNetUnfolder]: For 316575/316681 co-relation queries the response was YES. [2023-08-30 20:43:20,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145429 conditions, 18974 events. 11072/18974 cut-off events. For 316575/316681 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 153344 event pairs, 846 based on Foata normal form. 180/19132 useless extension candidates. Maximal degree in co-relation 145303. Up to 5337 conditions per place. [2023-08-30 20:43:20,253 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1550 selfloop transitions, 455 changer transitions 146/2185 dead transitions. [2023-08-30 20:43:20,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2185 transitions, 41509 flow [2023-08-30 20:43:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-30 20:43:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-30 20:43:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4180 transitions. [2023-08-30 20:43:20,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083227508059002 [2023-08-30 20:43:20,258 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4180 transitions. [2023-08-30 20:43:20,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4180 transitions. [2023-08-30 20:43:20,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:20,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4180 transitions. [2023-08-30 20:43:20,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 144.13793103448276) internal successors, (4180), 29 states have internal predecessors, (4180), 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) [2023-08-30 20:43:20,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 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) [2023-08-30 20:43:20,269 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 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) [2023-08-30 20:43:20,269 INFO L175 Difference]: Start difference. First operand has 371 places, 1073 transitions, 19541 flow. Second operand 29 states and 4180 transitions. [2023-08-30 20:43:20,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2185 transitions, 41509 flow [2023-08-30 20:43:22,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 2185 transitions, 41137 flow, removed 32 selfloop flow, removed 16 redundant places. [2023-08-30 20:43:22,943 INFO L231 Difference]: Finished difference. Result has 396 places, 1387 transitions, 26430 flow [2023-08-30 20:43:22,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19173, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26430, PETRI_PLACES=396, PETRI_TRANSITIONS=1387} [2023-08-30 20:43:22,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2023-08-30 20:43:22,944 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1387 transitions, 26430 flow [2023-08-30 20:43:22,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 137.64705882352942) internal successors, (2340), 17 states have internal predecessors, (2340), 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) [2023-08-30 20:43:22,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:43:22,945 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, 1] [2023-08-30 20:43:22,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 20:43:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:23,146 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)] === [2023-08-30 20:43:23,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:43:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash -16239823, now seen corresponding path program 2 times [2023-08-30 20:43:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:43:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158114698] [2023-08-30 20:43:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:23,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:43:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:23,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:43:23,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158114698] [2023-08-30 20:43:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158114698] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:43:23,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904360888] [2023-08-30 20:43:23,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:43:23,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:23,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:43:23,253 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) [2023-08-30 20:43:23,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 20:43:23,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:43:23,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:43:23,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:43:23,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:43:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:23,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:43:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:23,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904360888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:43:23,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:43:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 20:43:23,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516321416] [2023-08-30 20:43:23,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:43:23,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 20:43:23,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:43:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 20:43:23,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 20:43:23,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:43:23,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1387 transitions, 26430 flow. Second operand has 16 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 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) [2023-08-30 20:43:23,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:43:23,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:43:23,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:30,596 INFO L130 PetriNetUnfolder]: 10331/18073 cut-off events. [2023-08-30 20:43:30,597 INFO L131 PetriNetUnfolder]: For 379266/379368 co-relation queries the response was YES. [2023-08-30 20:43:30,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151051 conditions, 18073 events. 10331/18073 cut-off events. For 379266/379368 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 148255 event pairs, 1833 based on Foata normal form. 416/18450 useless extension candidates. Maximal degree in co-relation 150916. Up to 5761 conditions per place. [2023-08-30 20:43:30,776 INFO L137 encePairwiseOnDemand]: 344/353 looper letters, 1111 selfloop transitions, 503 changer transitions 184/1832 dead transitions. [2023-08-30 20:43:30,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1832 transitions, 36910 flow [2023-08-30 20:43:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 20:43:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 20:43:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2901 transitions. [2023-08-30 20:43:30,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41090651558073654 [2023-08-30 20:43:30,780 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2901 transitions. [2023-08-30 20:43:30,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2901 transitions. [2023-08-30 20:43:30,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:30,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2901 transitions. [2023-08-30 20:43:30,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 145.05) internal successors, (2901), 20 states have internal predecessors, (2901), 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) [2023-08-30 20:43:30,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-08-30 20:43:30,787 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-08-30 20:43:30,787 INFO L175 Difference]: Start difference. First operand has 396 places, 1387 transitions, 26430 flow. Second operand 20 states and 2901 transitions. [2023-08-30 20:43:30,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1832 transitions, 36910 flow [2023-08-30 20:43:34,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1832 transitions, 36291 flow, removed 214 selfloop flow, removed 7 redundant places. [2023-08-30 20:43:34,801 INFO L231 Difference]: Finished difference. Result has 412 places, 1393 transitions, 27440 flow [2023-08-30 20:43:34,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25405, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=27440, PETRI_PLACES=412, PETRI_TRANSITIONS=1393} [2023-08-30 20:43:34,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2023-08-30 20:43:34,802 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1393 transitions, 27440 flow [2023-08-30 20:43:34,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.75) internal successors, (2204), 16 states have internal predecessors, (2204), 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) [2023-08-30 20:43:34,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:43:34,803 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, 1] [2023-08-30 20:43:34,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-30 20:43:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:35,003 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)] === [2023-08-30 20:43:35,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:43:35,005 INFO L85 PathProgramCache]: Analyzing trace with hash -57058493, now seen corresponding path program 3 times [2023-08-30 20:43:35,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:43:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550517031] [2023-08-30 20:43:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:43:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:43:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550517031] [2023-08-30 20:43:35,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550517031] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:43:35,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052915365] [2023-08-30 20:43:35,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:43:35,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:35,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:43:35,115 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) [2023-08-30 20:43:35,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 20:43:35,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 20:43:35,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:43:35,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:43:35,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:43:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:35,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:43:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052915365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:43:35,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:43:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 20:43:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824093298] [2023-08-30 20:43:35,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:43:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 20:43:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:43:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 20:43:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-08-30 20:43:35,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:43:35,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1393 transitions, 27440 flow. Second operand has 18 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 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) [2023-08-30 20:43:35,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:43:35,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:43:35,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:42,272 INFO L130 PetriNetUnfolder]: 9498/16524 cut-off events. [2023-08-30 20:43:42,272 INFO L131 PetriNetUnfolder]: For 351504/351656 co-relation queries the response was YES. [2023-08-30 20:43:42,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140288 conditions, 16524 events. 9498/16524 cut-off events. For 351504/351656 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 133518 event pairs, 627 based on Foata normal form. 381/16888 useless extension candidates. Maximal degree in co-relation 140150. Up to 4395 conditions per place. [2023-08-30 20:43:42,463 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1407 selfloop transitions, 316 changer transitions 358/2115 dead transitions. [2023-08-30 20:43:42,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2115 transitions, 43551 flow [2023-08-30 20:43:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 20:43:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 20:43:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4578 transitions. [2023-08-30 20:43:42,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40527620396600567 [2023-08-30 20:43:42,468 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4578 transitions. [2023-08-30 20:43:42,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4578 transitions. [2023-08-30 20:43:42,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:42,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4578 transitions. [2023-08-30 20:43:42,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 143.0625) internal successors, (4578), 32 states have internal predecessors, (4578), 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) [2023-08-30 20:43:42,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 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) [2023-08-30 20:43:42,482 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 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) [2023-08-30 20:43:42,482 INFO L175 Difference]: Start difference. First operand has 412 places, 1393 transitions, 27440 flow. Second operand 32 states and 4578 transitions. [2023-08-30 20:43:42,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 2115 transitions, 43551 flow [2023-08-30 20:43:45,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 2115 transitions, 42969 flow, removed 215 selfloop flow, removed 9 redundant places. [2023-08-30 20:43:45,649 INFO L231 Difference]: Finished difference. Result has 430 places, 1334 transitions, 26350 flow [2023-08-30 20:43:45,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26581, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26350, PETRI_PLACES=430, PETRI_TRANSITIONS=1334} [2023-08-30 20:43:45,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2023-08-30 20:43:45,651 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1334 transitions, 26350 flow [2023-08-30 20:43:45,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.5) internal successors, (2475), 18 states have internal predecessors, (2475), 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) [2023-08-30 20:43:45,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:43:45,652 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, 1] [2023-08-30 20:43:45,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 20:43:45,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:45,858 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)] === [2023-08-30 20:43:45,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:43:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -720137693, now seen corresponding path program 4 times [2023-08-30 20:43:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:43:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900749026] [2023-08-30 20:43:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:43:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:43:45,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900749026] [2023-08-30 20:43:45,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900749026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:43:45,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655167567] [2023-08-30 20:43:45,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:43:45,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:45,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:43:45,986 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) [2023-08-30 20:43:45,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 20:43:46,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:43:46,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:43:46,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:43:46,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:43:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:46,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:43:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 20:43:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655167567] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:43:46,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:43:46,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 20:43:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561231763] [2023-08-30 20:43:46,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:43:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 20:43:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:43:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 20:43:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-08-30 20:43:46,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:43:46,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1334 transitions, 26350 flow. Second operand has 18 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 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) [2023-08-30 20:43:46,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:43:46,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:43:46,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:51,835 INFO L130 PetriNetUnfolder]: 7655/13389 cut-off events. [2023-08-30 20:43:51,835 INFO L131 PetriNetUnfolder]: For 267220/267376 co-relation queries the response was YES. [2023-08-30 20:43:51,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114259 conditions, 13389 events. 7655/13389 cut-off events. For 267220/267376 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 105318 event pairs, 754 based on Foata normal form. 425/13797 useless extension candidates. Maximal degree in co-relation 114122. Up to 4139 conditions per place. [2023-08-30 20:43:52,123 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 1191 selfloop transitions, 419 changer transitions 198/1842 dead transitions. [2023-08-30 20:43:52,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1842 transitions, 37530 flow [2023-08-30 20:43:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 20:43:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 20:43:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4450 transitions. [2023-08-30 20:43:52,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066526546650827 [2023-08-30 20:43:52,127 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4450 transitions. [2023-08-30 20:43:52,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4450 transitions. [2023-08-30 20:43:52,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:52,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4450 transitions. [2023-08-30 20:43:52,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 143.5483870967742) internal successors, (4450), 31 states have internal predecessors, (4450), 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) [2023-08-30 20:43:52,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 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) [2023-08-30 20:43:52,139 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 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) [2023-08-30 20:43:52,140 INFO L175 Difference]: Start difference. First operand has 430 places, 1334 transitions, 26350 flow. Second operand 31 states and 4450 transitions. [2023-08-30 20:43:52,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1842 transitions, 37530 flow [2023-08-30 20:43:54,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1842 transitions, 35732 flow, removed 341 selfloop flow, removed 31 redundant places. [2023-08-30 20:43:54,277 INFO L231 Difference]: Finished difference. Result has 433 places, 1227 transitions, 23945 flow [2023-08-30 20:43:54,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=22655, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=23945, PETRI_PLACES=433, PETRI_TRANSITIONS=1227} [2023-08-30 20:43:54,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2023-08-30 20:43:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1227 transitions, 23945 flow [2023-08-30 20:43:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.61111111111111) internal successors, (2477), 18 states have internal predecessors, (2477), 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) [2023-08-30 20:43:54,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:43:54,280 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, 1] [2023-08-30 20:43:54,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 20:43:54,486 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,SelfDestructingSolverStorable21 [2023-08-30 20:43:54,486 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)] === [2023-08-30 20:43:54,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:43:54,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1459680607, now seen corresponding path program 5 times [2023-08-30 20:43:54,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:43:54,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470217194] [2023-08-30 20:43:54,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:43:54,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:43:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:43:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:54,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:43:54,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470217194] [2023-08-30 20:43:54,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470217194] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:43:54,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827516699] [2023-08-30 20:43:54,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:43:54,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:43:54,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:43:54,580 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) [2023-08-30 20:43:54,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 20:43:54,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:43:54,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:43:54,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 20:43:54,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:43:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:54,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:43:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:43:54,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827516699] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:43:54,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:43:54,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 20:43:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556608403] [2023-08-30 20:43:54,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:43:54,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 20:43:54,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:43:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 20:43:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-30 20:43:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:43:55,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1227 transitions, 23945 flow. Second operand has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 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) [2023-08-30 20:43:55,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:43:55,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:43:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:43:58,315 INFO L130 PetriNetUnfolder]: 5253/9441 cut-off events. [2023-08-30 20:43:58,315 INFO L131 PetriNetUnfolder]: For 189872/190014 co-relation queries the response was YES. [2023-08-30 20:43:58,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75915 conditions, 9441 events. 5253/9441 cut-off events. For 189872/190014 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 71833 event pairs, 449 based on Foata normal form. 737/10157 useless extension candidates. Maximal degree in co-relation 75777. Up to 3529 conditions per place. [2023-08-30 20:43:58,606 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 728 selfloop transitions, 50 changer transitions 388/1184 dead transitions. [2023-08-30 20:43:58,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1184 transitions, 22834 flow [2023-08-30 20:43:58,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 20:43:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 20:43:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2560 transitions. [2023-08-30 20:43:58,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40289581366068616 [2023-08-30 20:43:58,610 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2560 transitions. [2023-08-30 20:43:58,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2560 transitions. [2023-08-30 20:43:58,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:43:58,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2560 transitions. [2023-08-30 20:43:58,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.22222222222223) internal successors, (2560), 18 states have internal predecessors, (2560), 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) [2023-08-30 20:43:58,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-08-30 20:43:58,618 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 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) [2023-08-30 20:43:58,618 INFO L175 Difference]: Start difference. First operand has 433 places, 1227 transitions, 23945 flow. Second operand 18 states and 2560 transitions. [2023-08-30 20:43:58,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1184 transitions, 22834 flow [2023-08-30 20:43:59,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1184 transitions, 22349 flow, removed 50 selfloop flow, removed 24 redundant places. [2023-08-30 20:44:00,006 INFO L231 Difference]: Finished difference. Result has 395 places, 674 transitions, 11876 flow [2023-08-30 20:44:00,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16613, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11876, PETRI_PLACES=395, PETRI_TRANSITIONS=674} [2023-08-30 20:44:00,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-08-30 20:44:00,008 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 674 transitions, 11876 flow [2023-08-30 20:44:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 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) [2023-08-30 20:44:00,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:00,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:00,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:00,215 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,SelfDestructingSolverStorable22 [2023-08-30 20:44:00,216 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)] === [2023-08-30 20:44:00,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 989218226, now seen corresponding path program 16 times [2023-08-30 20:44:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:00,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287656004] [2023-08-30 20:44:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:44:00,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:00,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287656004] [2023-08-30 20:44:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287656004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378704399] [2023-08-30 20:44:00,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:44:00,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:00,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:00,307 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) [2023-08-30 20:44:00,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 20:44:00,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:44:00,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:00,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:00,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:44:00,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:44:00,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378704399] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:00,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-08-30 20:44:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846668637] [2023-08-30 20:44:00,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:00,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 20:44:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 20:44:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-08-30 20:44:01,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 353 [2023-08-30 20:44:01,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 674 transitions, 11876 flow. Second operand has 19 states, 19 states have (on average 133.94736842105263) internal successors, (2545), 19 states have internal predecessors, (2545), 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) [2023-08-30 20:44:01,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:01,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 353 [2023-08-30 20:44:01,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:03,185 INFO L130 PetriNetUnfolder]: 3313/5243 cut-off events. [2023-08-30 20:44:03,185 INFO L131 PetriNetUnfolder]: For 118541/118541 co-relation queries the response was YES. [2023-08-30 20:44:03,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46932 conditions, 5243 events. 3313/5243 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29570 event pairs, 320 based on Foata normal form. 385/5625 useless extension candidates. Maximal degree in co-relation 46805. Up to 2053 conditions per place. [2023-08-30 20:44:03,245 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 431 selfloop transitions, 539 changer transitions 0/970 dead transitions. [2023-08-30 20:44:03,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 970 transitions, 18377 flow [2023-08-30 20:44:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 20:44:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 20:44:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 5230 transitions. [2023-08-30 20:44:03,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38989115849112865 [2023-08-30 20:44:03,249 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 5230 transitions. [2023-08-30 20:44:03,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 5230 transitions. [2023-08-30 20:44:03,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:03,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 5230 transitions. [2023-08-30 20:44:03,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 137.6315789473684) internal successors, (5230), 38 states have internal predecessors, (5230), 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) [2023-08-30 20:44:03,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 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) [2023-08-30 20:44:03,259 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 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) [2023-08-30 20:44:03,259 INFO L175 Difference]: Start difference. First operand has 395 places, 674 transitions, 11876 flow. Second operand 38 states and 5230 transitions. [2023-08-30 20:44:03,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 970 transitions, 18377 flow [2023-08-30 20:44:03,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 970 transitions, 16390 flow, removed 619 selfloop flow, removed 28 redundant places. [2023-08-30 20:44:03,976 INFO L231 Difference]: Finished difference. Result has 318 places, 779 transitions, 14356 flow [2023-08-30 20:44:03,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14356, PETRI_PLACES=318, PETRI_TRANSITIONS=779} [2023-08-30 20:44:03,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2023-08-30 20:44:03,977 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 779 transitions, 14356 flow [2023-08-30 20:44:03,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 133.94736842105263) internal successors, (2545), 19 states have internal predecessors, (2545), 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) [2023-08-30 20:44:03,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:03,977 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:03,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:04,178 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)] === [2023-08-30 20:44:04,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2072912546, now seen corresponding path program 17 times [2023-08-30 20:44:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:04,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200909063] [2023-08-30 20:44:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:04,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200909063] [2023-08-30 20:44:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200909063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784696391] [2023-08-30 20:44:04,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:44:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:04,301 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) [2023-08-30 20:44:04,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 20:44:04,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:44:04,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:04,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:04,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:04,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784696391] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:04,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:04,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-30 20:44:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269704838] [2023-08-30 20:44:04,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:04,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 20:44:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 20:44:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-08-30 20:44:05,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:05,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 779 transitions, 14356 flow. Second operand has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 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) [2023-08-30 20:44:05,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:05,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:05,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:07,129 INFO L130 PetriNetUnfolder]: 4158/6657 cut-off events. [2023-08-30 20:44:07,130 INFO L131 PetriNetUnfolder]: For 182123/182208 co-relation queries the response was YES. [2023-08-30 20:44:07,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63313 conditions, 6657 events. 4158/6657 cut-off events. For 182123/182208 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40055 event pairs, 503 based on Foata normal form. 53/6705 useless extension candidates. Maximal degree in co-relation 63181. Up to 2861 conditions per place. [2023-08-30 20:44:07,213 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 684 selfloop transitions, 355 changer transitions 0/1077 dead transitions. [2023-08-30 20:44:07,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1077 transitions, 21954 flow [2023-08-30 20:44:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 20:44:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 20:44:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2143 transitions. [2023-08-30 20:44:07,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40472143531633614 [2023-08-30 20:44:07,215 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2143 transitions. [2023-08-30 20:44:07,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2143 transitions. [2023-08-30 20:44:07,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:07,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2143 transitions. [2023-08-30 20:44:07,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.86666666666667) internal successors, (2143), 15 states have internal predecessors, (2143), 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) [2023-08-30 20:44:07,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 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) [2023-08-30 20:44:07,220 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 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) [2023-08-30 20:44:07,220 INFO L175 Difference]: Start difference. First operand has 318 places, 779 transitions, 14356 flow. Second operand 15 states and 2143 transitions. [2023-08-30 20:44:07,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1077 transitions, 21954 flow [2023-08-30 20:44:08,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1077 transitions, 20028 flow, removed 656 selfloop flow, removed 11 redundant places. [2023-08-30 20:44:08,751 INFO L231 Difference]: Finished difference. Result has 328 places, 913 transitions, 16650 flow [2023-08-30 20:44:08,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=12772, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16650, PETRI_PLACES=328, PETRI_TRANSITIONS=913} [2023-08-30 20:44:08,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2023-08-30 20:44:08,753 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 913 transitions, 16650 flow [2023-08-30 20:44:08,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 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) [2023-08-30 20:44:08,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:08,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:08,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:08,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:08,959 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)] === [2023-08-30 20:44:08,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1999441316, now seen corresponding path program 18 times [2023-08-30 20:44:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:08,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192361074] [2023-08-30 20:44:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192361074] [2023-08-30 20:44:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192361074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808553661] [2023-08-30 20:44:09,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:44:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:09,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:09,085 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) [2023-08-30 20:44:09,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 20:44:09,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:44:09,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:09,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:09,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808553661] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:09,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:09,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-30 20:44:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71077680] [2023-08-30 20:44:09,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:09,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 20:44:09,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 20:44:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-30 20:44:09,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:09,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 913 transitions, 16650 flow. Second operand has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 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) [2023-08-30 20:44:09,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:09,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:09,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:12,717 INFO L130 PetriNetUnfolder]: 5220/8343 cut-off events. [2023-08-30 20:44:12,718 INFO L131 PetriNetUnfolder]: For 223952/224067 co-relation queries the response was YES. [2023-08-30 20:44:12,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81851 conditions, 8343 events. 5220/8343 cut-off events. For 223952/224067 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51860 event pairs, 514 based on Foata normal form. 75/8400 useless extension candidates. Maximal degree in co-relation 81717. Up to 2937 conditions per place. [2023-08-30 20:44:12,805 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 653 selfloop transitions, 503 changer transitions 0/1194 dead transitions. [2023-08-30 20:44:12,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1194 transitions, 24337 flow [2023-08-30 20:44:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 20:44:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 20:44:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2724 transitions. [2023-08-30 20:44:12,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.406142835843149 [2023-08-30 20:44:12,811 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2724 transitions. [2023-08-30 20:44:12,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2724 transitions. [2023-08-30 20:44:12,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:12,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2724 transitions. [2023-08-30 20:44:12,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 143.3684210526316) internal successors, (2724), 19 states have internal predecessors, (2724), 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) [2023-08-30 20:44:12,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 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) [2023-08-30 20:44:12,818 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 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) [2023-08-30 20:44:12,818 INFO L175 Difference]: Start difference. First operand has 328 places, 913 transitions, 16650 flow. Second operand 19 states and 2724 transitions. [2023-08-30 20:44:12,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1194 transitions, 24337 flow [2023-08-30 20:44:14,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1194 transitions, 23973 flow, removed 164 selfloop flow, removed 6 redundant places. [2023-08-30 20:44:14,138 INFO L231 Difference]: Finished difference. Result has 346 places, 992 transitions, 19914 flow [2023-08-30 20:44:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19914, PETRI_PLACES=346, PETRI_TRANSITIONS=992} [2023-08-30 20:44:14,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2023-08-30 20:44:14,139 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 992 transitions, 19914 flow [2023-08-30 20:44:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 137.2) internal successors, (2744), 20 states have internal predecessors, (2744), 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) [2023-08-30 20:44:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:14,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 20:44:14,340 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)] === [2023-08-30 20:44:14,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2058981304, now seen corresponding path program 19 times [2023-08-30 20:44:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136853297] [2023-08-30 20:44:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:14,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136853297] [2023-08-30 20:44:14,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136853297] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:14,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569653978] [2023-08-30 20:44:14,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:44:14,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:14,584 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) [2023-08-30 20:44:14,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 20:44:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:14,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:14,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:14,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569653978] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:14,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-30 20:44:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012247737] [2023-08-30 20:44:14,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 20:44:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 20:44:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-30 20:44:15,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:15,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 992 transitions, 19914 flow. Second operand has 18 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 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) [2023-08-30 20:44:15,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:15,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:15,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:18,070 INFO L130 PetriNetUnfolder]: 5148/8230 cut-off events. [2023-08-30 20:44:18,071 INFO L131 PetriNetUnfolder]: For 247984/248087 co-relation queries the response was YES. [2023-08-30 20:44:18,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84492 conditions, 8230 events. 5148/8230 cut-off events. For 247984/248087 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 50848 event pairs, 841 based on Foata normal form. 87/8307 useless extension candidates. Maximal degree in co-relation 84354. Up to 4387 conditions per place. [2023-08-30 20:44:18,156 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 802 selfloop transitions, 267 changer transitions 0/1106 dead transitions. [2023-08-30 20:44:18,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1106 transitions, 24119 flow [2023-08-30 20:44:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 20:44:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 20:44:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-08-30 20:44:18,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025495750708215 [2023-08-30 20:44:18,157 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-08-30 20:44:18,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-08-30 20:44:18,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:18,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-08-30 20:44:18,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 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) [2023-08-30 20:44:18,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-08-30 20:44:18,160 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-08-30 20:44:18,160 INFO L175 Difference]: Start difference. First operand has 346 places, 992 transitions, 19914 flow. Second operand 10 states and 1421 transitions. [2023-08-30 20:44:18,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1106 transitions, 24119 flow [2023-08-30 20:44:19,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1106 transitions, 22799 flow, removed 271 selfloop flow, removed 20 redundant places. [2023-08-30 20:44:19,626 INFO L231 Difference]: Finished difference. Result has 329 places, 983 transitions, 19476 flow [2023-08-30 20:44:19,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18024, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19476, PETRI_PLACES=329, PETRI_TRANSITIONS=983} [2023-08-30 20:44:19,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2023-08-30 20:44:19,627 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 983 transitions, 19476 flow [2023-08-30 20:44:19,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 137.44444444444446) internal successors, (2474), 18 states have internal predecessors, (2474), 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) [2023-08-30 20:44:19,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:19,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:19,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:19,828 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,SelfDestructingSolverStorable26 [2023-08-30 20:44:19,828 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)] === [2023-08-30 20:44:19,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1537945544, now seen corresponding path program 20 times [2023-08-30 20:44:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662160046] [2023-08-30 20:44:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:20,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662160046] [2023-08-30 20:44:20,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662160046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:20,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119930204] [2023-08-30 20:44:20,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:44:20,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:20,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:20,021 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) [2023-08-30 20:44:20,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 20:44:20,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:44:20,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:20,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:20,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:20,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:20,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119930204] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:20,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:20,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-30 20:44:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622398669] [2023-08-30 20:44:20,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 20:44:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 20:44:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-08-30 20:44:20,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:20,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 983 transitions, 19476 flow. Second operand has 21 states, 21 states have (on average 136.95238095238096) internal successors, (2876), 21 states have internal predecessors, (2876), 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) [2023-08-30 20:44:20,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:20,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:20,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:23,384 INFO L130 PetriNetUnfolder]: 5100/8131 cut-off events. [2023-08-30 20:44:23,384 INFO L131 PetriNetUnfolder]: For 240212/240299 co-relation queries the response was YES. [2023-08-30 20:44:23,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82978 conditions, 8131 events. 5100/8131 cut-off events. For 240212/240299 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49891 event pairs, 839 based on Foata normal form. 69/8194 useless extension candidates. Maximal degree in co-relation 82842. Up to 4221 conditions per place. [2023-08-30 20:44:23,471 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 681 selfloop transitions, 365 changer transitions 0/1083 dead transitions. [2023-08-30 20:44:23,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1083 transitions, 23229 flow [2023-08-30 20:44:23,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 20:44:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 20:44:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1571 transitions. [2023-08-30 20:44:23,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40458408447077004 [2023-08-30 20:44:23,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1571 transitions. [2023-08-30 20:44:23,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1571 transitions. [2023-08-30 20:44:23,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:23,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1571 transitions. [2023-08-30 20:44:23,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.8181818181818) internal successors, (1571), 11 states have internal predecessors, (1571), 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) [2023-08-30 20:44:23,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 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) [2023-08-30 20:44:23,478 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 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) [2023-08-30 20:44:23,478 INFO L175 Difference]: Start difference. First operand has 329 places, 983 transitions, 19476 flow. Second operand 11 states and 1571 transitions. [2023-08-30 20:44:23,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1083 transitions, 23229 flow [2023-08-30 20:44:24,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1083 transitions, 22878 flow, removed 93 selfloop flow, removed 5 redundant places. [2023-08-30 20:44:24,869 INFO L231 Difference]: Finished difference. Result has 333 places, 982 transitions, 19839 flow [2023-08-30 20:44:24,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19109, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19839, PETRI_PLACES=333, PETRI_TRANSITIONS=982} [2023-08-30 20:44:24,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2023-08-30 20:44:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 982 transitions, 19839 flow [2023-08-30 20:44:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 136.95238095238096) internal successors, (2876), 21 states have internal predecessors, (2876), 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) [2023-08-30 20:44:24,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:24,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:24,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:25,077 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,SelfDestructingSolverStorable27 [2023-08-30 20:44:25,078 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)] === [2023-08-30 20:44:25,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1116558660, now seen corresponding path program 21 times [2023-08-30 20:44:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:25,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837933966] [2023-08-30 20:44:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:25,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:25,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837933966] [2023-08-30 20:44:25,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837933966] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:25,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689068368] [2023-08-30 20:44:25,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 20:44:25,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:25,182 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:44:25,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-30 20:44:25,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 20:44:25,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:25,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:25,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:25,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:25,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689068368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:25,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:25,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-30 20:44:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205777540] [2023-08-30 20:44:25,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:25,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 20:44:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 20:44:25,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-30 20:44:25,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:25,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 982 transitions, 19839 flow. Second operand has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 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) [2023-08-30 20:44:25,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:25,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:25,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:28,352 INFO L130 PetriNetUnfolder]: 5019/7953 cut-off events. [2023-08-30 20:44:28,352 INFO L131 PetriNetUnfolder]: For 244884/244971 co-relation queries the response was YES. [2023-08-30 20:44:28,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81842 conditions, 7953 events. 5019/7953 cut-off events. For 244884/244971 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48070 event pairs, 877 based on Foata normal form. 85/8028 useless extension candidates. Maximal degree in co-relation 81706. Up to 4387 conditions per place. [2023-08-30 20:44:28,439 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1036 dead transitions. [2023-08-30 20:44:28,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1036 transitions, 22821 flow [2023-08-30 20:44:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 20:44:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 20:44:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-08-30 20:44:28,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025495750708215 [2023-08-30 20:44:28,440 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-08-30 20:44:28,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-08-30 20:44:28,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:28,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-08-30 20:44:28,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 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) [2023-08-30 20:44:28,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-08-30 20:44:28,444 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-08-30 20:44:28,444 INFO L175 Difference]: Start difference. First operand has 333 places, 982 transitions, 19839 flow. Second operand 10 states and 1421 transitions. [2023-08-30 20:44:28,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1036 transitions, 22821 flow [2023-08-30 20:44:29,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1036 transitions, 22186 flow, removed 45 selfloop flow, removed 10 redundant places. [2023-08-30 20:44:29,790 INFO L231 Difference]: Finished difference. Result has 327 places, 958 transitions, 19481 flow [2023-08-30 20:44:29,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19481, PETRI_PLACES=327, PETRI_TRANSITIONS=958} [2023-08-30 20:44:29,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2023-08-30 20:44:29,791 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 958 transitions, 19481 flow [2023-08-30 20:44:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 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) [2023-08-30 20:44:29,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:29,792 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:29,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:29,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 20:44:29,994 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)] === [2023-08-30 20:44:29,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763192, now seen corresponding path program 22 times [2023-08-30 20:44:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669415950] [2023-08-30 20:44:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:29,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:30,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669415950] [2023-08-30 20:44:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669415950] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89778227] [2023-08-30 20:44:30,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 20:44:30,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:30,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:30,121 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:44:30,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-30 20:44:30,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 20:44:30,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:30,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:30,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:30,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 20:44:30,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89778227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:30,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-30 20:44:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465019701] [2023-08-30 20:44:30,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:30,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 20:44:30,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 20:44:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-30 20:44:30,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:30,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 958 transitions, 19481 flow. Second operand has 21 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 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) [2023-08-30 20:44:30,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:30,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:30,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:33,702 INFO L130 PetriNetUnfolder]: 4936/7811 cut-off events. [2023-08-30 20:44:33,702 INFO L131 PetriNetUnfolder]: For 243527/243620 co-relation queries the response was YES. [2023-08-30 20:44:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80534 conditions, 7811 events. 4936/7811 cut-off events. For 243527/243620 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 47012 event pairs, 526 based on Foata normal form. 103/7890 useless extension candidates. Maximal degree in co-relation 80398. Up to 2911 conditions per place. [2023-08-30 20:44:33,781 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 604 selfloop transitions, 498 changer transitions 0/1137 dead transitions. [2023-08-30 20:44:33,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1137 transitions, 24707 flow [2023-08-30 20:44:33,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 20:44:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 20:44:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2300 transitions. [2023-08-30 20:44:33,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722379603399433 [2023-08-30 20:44:33,783 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2300 transitions. [2023-08-30 20:44:33,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2300 transitions. [2023-08-30 20:44:33,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:33,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2300 transitions. [2023-08-30 20:44:33,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 143.75) internal successors, (2300), 16 states have internal predecessors, (2300), 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) [2023-08-30 20:44:33,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-08-30 20:44:33,787 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 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) [2023-08-30 20:44:33,787 INFO L175 Difference]: Start difference. First operand has 327 places, 958 transitions, 19481 flow. Second operand 16 states and 2300 transitions. [2023-08-30 20:44:33,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1137 transitions, 24707 flow [2023-08-30 20:44:34,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1137 transitions, 24396 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-30 20:44:34,974 INFO L231 Difference]: Finished difference. Result has 332 places, 958 transitions, 20411 flow [2023-08-30 20:44:34,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19090, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20411, PETRI_PLACES=332, PETRI_TRANSITIONS=958} [2023-08-30 20:44:34,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2023-08-30 20:44:34,975 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 958 transitions, 20411 flow [2023-08-30 20:44:34,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 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) [2023-08-30 20:44:34,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:34,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:34,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:35,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:35,177 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)] === [2023-08-30 20:44:35,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1034104112, now seen corresponding path program 23 times [2023-08-30 20:44:35,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:35,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743514688] [2023-08-30 20:44:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:35,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:35,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743514688] [2023-08-30 20:44:35,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743514688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039689565] [2023-08-30 20:44:35,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 20:44:35,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:35,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:35,281 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:44:35,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-30 20:44:35,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:44:35,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:35,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 20:44:35,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:35,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039689565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:35,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-08-30 20:44:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065785227] [2023-08-30 20:44:35,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 20:44:35,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 20:44:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-08-30 20:44:36,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 353 [2023-08-30 20:44:36,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 958 transitions, 20411 flow. Second operand has 17 states, 17 states have (on average 133.64705882352942) internal successors, (2272), 17 states have internal predecessors, (2272), 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) [2023-08-30 20:44:36,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:36,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 353 [2023-08-30 20:44:36,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:38,761 INFO L130 PetriNetUnfolder]: 4976/7810 cut-off events. [2023-08-30 20:44:38,761 INFO L131 PetriNetUnfolder]: For 245461/245461 co-relation queries the response was YES. [2023-08-30 20:44:38,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81765 conditions, 7810 events. 4976/7810 cut-off events. For 245461/245461 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 45950 event pairs, 345 based on Foata normal form. 46/7853 useless extension candidates. Maximal degree in co-relation 81630. Up to 2863 conditions per place. [2023-08-30 20:44:38,847 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 584 selfloop transitions, 569 changer transitions 0/1153 dead transitions. [2023-08-30 20:44:38,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1153 transitions, 26748 flow [2023-08-30 20:44:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 20:44:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 20:44:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2758 transitions. [2023-08-30 20:44:38,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39065155807365437 [2023-08-30 20:44:38,849 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2758 transitions. [2023-08-30 20:44:38,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2758 transitions. [2023-08-30 20:44:38,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:38,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2758 transitions. [2023-08-30 20:44:38,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.9) internal successors, (2758), 20 states have internal predecessors, (2758), 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) [2023-08-30 20:44:38,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-08-30 20:44:38,856 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 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) [2023-08-30 20:44:38,856 INFO L175 Difference]: Start difference. First operand has 332 places, 958 transitions, 20411 flow. Second operand 20 states and 2758 transitions. [2023-08-30 20:44:38,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1153 transitions, 26748 flow [2023-08-30 20:44:40,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1153 transitions, 25541 flow, removed 94 selfloop flow, removed 12 redundant places. [2023-08-30 20:44:40,322 INFO L231 Difference]: Finished difference. Result has 341 places, 993 transitions, 21826 flow [2023-08-30 20:44:40,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19320, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=21826, PETRI_PLACES=341, PETRI_TRANSITIONS=993} [2023-08-30 20:44:40,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2023-08-30 20:44:40,323 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 993 transitions, 21826 flow [2023-08-30 20:44:40,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 133.64705882352942) internal successors, (2272), 17 states have internal predecessors, (2272), 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) [2023-08-30 20:44:40,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:40,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:40,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-30 20:44:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:40,525 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)] === [2023-08-30 20:44:40,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash -844689024, now seen corresponding path program 24 times [2023-08-30 20:44:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794488367] [2023-08-30 20:44:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:40,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:40,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794488367] [2023-08-30 20:44:40,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794488367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:40,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343698754] [2023-08-30 20:44:40,640 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:44:40,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:40,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:40,645 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:44:40,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-30 20:44:40,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:44:40,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:40,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 20:44:40,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:40,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 20:44:41,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343698754] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:44:41,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:44:41,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-30 20:44:41,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050017872] [2023-08-30 20:44:41,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:44:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 20:44:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:44:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 20:44:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-30 20:44:41,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2023-08-30 20:44:41,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 993 transitions, 21826 flow. Second operand has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 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) [2023-08-30 20:44:41,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:44:41,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2023-08-30 20:44:41,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:44:43,971 INFO L130 PetriNetUnfolder]: 4844/7599 cut-off events. [2023-08-30 20:44:43,972 INFO L131 PetriNetUnfolder]: For 245831/245942 co-relation queries the response was YES. [2023-08-30 20:44:44,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80606 conditions, 7599 events. 4844/7599 cut-off events. For 245831/245942 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44737 event pairs, 1064 based on Foata normal form. 41/7614 useless extension candidates. Maximal degree in co-relation 80468. Up to 5787 conditions per place. [2023-08-30 20:44:44,052 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1039 dead transitions. [2023-08-30 20:44:44,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1039 transitions, 24366 flow [2023-08-30 20:44:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 20:44:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 20:44:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2023-08-30 20:44:44,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005665722379603 [2023-08-30 20:44:44,054 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2023-08-30 20:44:44,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2023-08-30 20:44:44,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:44:44,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2023-08-30 20:44:44,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 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) [2023-08-30 20:44:44,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-08-30 20:44:44,057 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 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) [2023-08-30 20:44:44,057 INFO L175 Difference]: Start difference. First operand has 341 places, 993 transitions, 21826 flow. Second operand 10 states and 1414 transitions. [2023-08-30 20:44:44,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1039 transitions, 24366 flow [2023-08-30 20:44:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1039 transitions, 24002 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-08-30 20:44:45,301 INFO L231 Difference]: Finished difference. Result has 345 places, 994 transitions, 22014 flow [2023-08-30 20:44:45,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21237, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22014, PETRI_PLACES=345, PETRI_TRANSITIONS=994} [2023-08-30 20:44:45,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-08-30 20:44:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 994 transitions, 22014 flow [2023-08-30 20:44:45,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.1578947368421) internal successors, (2606), 19 states have internal predecessors, (2606), 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) [2023-08-30 20:44:45,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:44:45,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:44:45,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-30 20:44:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-30 20:44:45,504 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)] === [2023-08-30 20:44:45,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:44:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash 964857070, now seen corresponding path program 6 times [2023-08-30 20:44:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:44:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422289019] [2023-08-30 20:44:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:44:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:44:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:44:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:44:47,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:44:47,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422289019] [2023-08-30 20:44:47,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422289019] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:44:47,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981669063] [2023-08-30 20:44:47,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 20:44:47,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:44:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:44:47,048 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:44:47,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-30 20:44:47,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 20:44:47,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:44:47,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 118 conjunts are in the unsatisfiable core [2023-08-30 20:44:47,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:44:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:47,281 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2023-08-30 20:44:47,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2023-08-30 20:44:47,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:47,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:47,521 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 20:44:47,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 37 [2023-08-30 20:44:47,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 20:44:47,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:44:48,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:48,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:48,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 20:44:48,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:48,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:48,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 20:44:48,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:48,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 20:44:48,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 15 [2023-08-30 20:44:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:44:48,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:44:48,681 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= c_~res1~0 (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse1 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 c_~B~0.base)) (.cse2 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse0 c_~B~0.offset) c_~res2~0 (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset .cse2)) (select .cse0 (+ .cse2 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-08-30 20:44:48,790 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse2 (select |c_#memory_int| c_~B~0.base)) (.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse2 (+ c_~B~0.offset .cse1)) c_~res1~0 (select .cse2 (+ 4 c_~B~0.offset .cse1)) (select .cse0 (+ c_~A~0.offset 4 .cse1)))) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse4 (select .cse6 c_~A~0.base)) (.cse3 (select .cse6 c_~B~0.base)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse3 c_~B~0.offset) c_~res2~0 (select .cse4 c_~A~0.offset) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-08-30 20:44:48,913 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int)) (v_ArrVal_1760 (Array Int Int))) (or (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1760))) (= (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse0 (select .cse2 c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset 4)) c_~res1~0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 c_~A~0.offset))) (let ((.cse6 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4)) (.cse4 (select .cse6 c_~A~0.base))) (+ (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse4 c_~A~0.offset)))))))) is different from false [2023-08-30 20:44:48,928 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:44:48,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 118 [2023-08-30 20:44:49,170 INFO L321 Elim1Store]: treesize reduction 16, result has 89.7 percent of original size [2023-08-30 20:44:49,171 INFO L350 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 110582 treesize of output 86145 [2023-08-30 20:44:49,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:49,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:49,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:44:49,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2614 treesize of output 2398 [2023-08-30 20:44:49,526 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:49,527 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:49,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:44:49,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 2358 treesize of output 2022 [2023-08-30 20:44:49,671 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:49,672 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:44:49,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 20:44:49,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1910 treesize of output 1438 [2023-08-30 20:45:45,852 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:46:05,450 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:46:12,187 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 20:48:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-08-30 20:48:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981669063] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:48:11,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:48:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2023-08-30 20:48:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362733658] [2023-08-30 20:48:11,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:48:11,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-30 20:48:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:48:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-30 20:48:11,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1472, Unknown=16, NotChecked=240, Total=1892 [2023-08-30 20:48:11,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-08-30 20:48:11,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 994 transitions, 22014 flow. Second operand has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 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) [2023-08-30 20:48:11,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:48:11,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-08-30 20:48:11,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:48:18,508 INFO L130 PetriNetUnfolder]: 7755/12152 cut-off events. [2023-08-30 20:48:18,508 INFO L131 PetriNetUnfolder]: For 424246/424246 co-relation queries the response was YES. [2023-08-30 20:48:18,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132468 conditions, 12152 events. 7755/12152 cut-off events. For 424246/424246 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 76776 event pairs, 639 based on Foata normal form. 13/12159 useless extension candidates. Maximal degree in co-relation 132329. Up to 7555 conditions per place. [2023-08-30 20:48:18,741 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 1029 selfloop transitions, 765 changer transitions 16/1810 dead transitions. [2023-08-30 20:48:18,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1810 transitions, 44533 flow [2023-08-30 20:48:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 20:48:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 20:48:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2536 transitions. [2023-08-30 20:48:18,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565762849048968 [2023-08-30 20:48:18,744 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2536 transitions. [2023-08-30 20:48:18,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2536 transitions. [2023-08-30 20:48:18,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:48:18,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2536 transitions. [2023-08-30 20:48:18,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 90.57142857142857) internal successors, (2536), 28 states have internal predecessors, (2536), 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) [2023-08-30 20:48:18,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 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) [2023-08-30 20:48:18,750 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 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) [2023-08-30 20:48:18,750 INFO L175 Difference]: Start difference. First operand has 345 places, 994 transitions, 22014 flow. Second operand 28 states and 2536 transitions. [2023-08-30 20:48:18,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1810 transitions, 44533 flow [2023-08-30 20:48:22,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1810 transitions, 43349 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 20:48:22,541 INFO L231 Difference]: Finished difference. Result has 377 places, 1524 transitions, 37404 flow [2023-08-30 20:48:22,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21444, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=37404, PETRI_PLACES=377, PETRI_TRANSITIONS=1524} [2023-08-30 20:48:22,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2023-08-30 20:48:22,542 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1524 transitions, 37404 flow [2023-08-30 20:48:22,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 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) [2023-08-30 20:48:22,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:48:22,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:48:22,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-30 20:48:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:48:22,743 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:48:22,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:48:22,754 INFO L85 PathProgramCache]: Analyzing trace with hash 66394832, now seen corresponding path program 7 times [2023-08-30 20:48:22,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:48:22,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716852066] [2023-08-30 20:48:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:48:22,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:48:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:48:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:48:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:48:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716852066] [2023-08-30 20:48:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716852066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:48:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985089293] [2023-08-30 20:48:23,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 20:48:23,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:48:23,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:48:23,701 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:48:23,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-30 20:48:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:48:23,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-30 20:48:23,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:48:24,245 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 20:48:24,266 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-08-30 20:48:24,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 37 [2023-08-30 20:48:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 20:48:24,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 20:48:24,775 INFO L321 Elim1Store]: treesize reduction 16, result has 95.1 percent of original size [2023-08-30 20:48:24,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 71 treesize of output 326 [2023-08-30 20:48:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 20:48:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985089293] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 20:48:53,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 20:48:53,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 30 [2023-08-30 20:48:53,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562629840] [2023-08-30 20:48:53,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 20:48:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 20:48:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 20:48:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 20:48:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-08-30 20:48:55,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 20:48:58,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 20:49:01,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 20:49:01,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-08-30 20:49:01,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1524 transitions, 37404 flow. Second operand has 32 states, 32 states have (on average 119.96875) internal successors, (3839), 32 states have internal predecessors, (3839), 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) [2023-08-30 20:49:01,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 20:49:01,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-08-30 20:49:01,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 20:49:11,927 INFO L130 PetriNetUnfolder]: 11680/18604 cut-off events. [2023-08-30 20:49:11,927 INFO L131 PetriNetUnfolder]: For 763154/763154 co-relation queries the response was YES. [2023-08-30 20:49:12,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214074 conditions, 18604 events. 11680/18604 cut-off events. For 763154/763154 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 130586 event pairs, 539 based on Foata normal form. 12/18615 useless extension candidates. Maximal degree in co-relation 213922. Up to 9991 conditions per place. [2023-08-30 20:49:12,204 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 1215 selfloop transitions, 1630 changer transitions 21/2866 dead transitions. [2023-08-30 20:49:12,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 2866 transitions, 73839 flow [2023-08-30 20:49:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-30 20:49:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-30 20:49:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6622 transitions. [2023-08-30 20:49:12,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607539769012857 [2023-08-30 20:49:12,208 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6622 transitions. [2023-08-30 20:49:12,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6622 transitions. [2023-08-30 20:49:12,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 20:49:12,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6622 transitions. [2023-08-30 20:49:12,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 127.34615384615384) internal successors, (6622), 52 states have internal predecessors, (6622), 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) [2023-08-30 20:49:12,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 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) [2023-08-30 20:49:12,223 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 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) [2023-08-30 20:49:12,223 INFO L175 Difference]: Start difference. First operand has 377 places, 1524 transitions, 37404 flow. Second operand 52 states and 6622 transitions. [2023-08-30 20:49:12,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 2866 transitions, 73839 flow [2023-08-30 20:49:20,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2866 transitions, 71805 flow, removed 1009 selfloop flow, removed 5 redundant places. [2023-08-30 20:49:20,471 INFO L231 Difference]: Finished difference. Result has 450 places, 2499 transitions, 67777 flow [2023-08-30 20:49:20,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=36352, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=67777, PETRI_PLACES=450, PETRI_TRANSITIONS=2499} [2023-08-30 20:49:20,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2023-08-30 20:49:20,473 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2499 transitions, 67777 flow [2023-08-30 20:49:20,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 119.96875) internal successors, (3839), 32 states have internal predecessors, (3839), 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) [2023-08-30 20:49:20,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 20:49:20,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 20:49:20,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-30 20:49:20,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:49:20,674 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 20:49:20,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 20:49:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1612068568, now seen corresponding path program 8 times [2023-08-30 20:49:20,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 20:49:20,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236689709] [2023-08-30 20:49:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 20:49:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 20:49:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 20:49:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:49:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 20:49:22,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236689709] [2023-08-30 20:49:22,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236689709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 20:49:22,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747826218] [2023-08-30 20:49:22,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 20:49:22,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 20:49:22,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 20:49:22,079 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 20:49:22,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-30 20:49:22,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 20:49:22,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 20:49:22,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 106 conjunts are in the unsatisfiable core [2023-08-30 20:49:22,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 20:49:22,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 20:49:22,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:49:22,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:49:22,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 20:49:23,071 INFO L321 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2023-08-30 20:49:23,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2023-08-30 20:49:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 20:49:23,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15