./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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-queue-add-3-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:40:55,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:40:55,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:40:55,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:40:55,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:40:55,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:40:55,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:40:55,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:40:55,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:40:55,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:40:55,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:40:55,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:40:55,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:40:55,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:40:55,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:40:55,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:40:55,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:40:55,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:40:55,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:40:55,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:40:55,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:40:55,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:40:55,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:40:55,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:40:55,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:40:55,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:40:55,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:40:55,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:40:55,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:40:55,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:40:55,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:40:55,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:40:55,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:40:55,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:40:55,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:40:55,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:40:55,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:40:55,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:40:55,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:40:55,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:40:55,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:40:55,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:40:55,826 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:40:55,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:40:55,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:40:55,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:40:55,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:40:55,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:40:55,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:40:55,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:40:55,829 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:40:55,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:40:55,830 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:40:55,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:40:55,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:40:55,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:40:55,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:40:55,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:40:55,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:40:55,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:40:55,832 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:40:55,832 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:40:55,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:40:55,832 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:40:55,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:40:55,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:40:55,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:40:55,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:40:55,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:40:55,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:40:55,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:40:55,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:40:55,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:40:55,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:40:55,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:40:55,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:40:55,835 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:40:55,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:40:55,835 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:40:55,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:40:56,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:40:56,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:40:56,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:40:56,163 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:40:56,163 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:40:56,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-08-30 15:40:57,267 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:40:57,476 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:40:57,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-08-30 15:40:57,482 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c864ff22d/98f4b871463145cd9e8ab250a4eae3f7/FLAGd3c35b374 [2023-08-30 15:40:57,494 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c864ff22d/98f4b871463145cd9e8ab250a4eae3f7 [2023-08-30 15:40:57,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:40:57,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:40:57,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:40:57,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:40:57,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:40:57,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41571d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57, skipping insertion in model container [2023-08-30 15:40:57,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:40:57,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:40:57,663 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-queue-add-3-nl.wvr.c[3615,3628] [2023-08-30 15:40:57,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:40:57,676 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:40:57,700 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-queue-add-3-nl.wvr.c[3615,3628] [2023-08-30 15:40:57,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:40:57,711 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:40:57,711 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:40:57,717 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:40:57,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57 WrapperNode [2023-08-30 15:40:57,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:40:57,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:40:57,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:40:57,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:40:57,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,759 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 285 [2023-08-30 15:40:57,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:40:57,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:40:57,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:40:57,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:40:57,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,785 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:40:57,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:40:57,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:40:57,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:40:57,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (1/1) ... [2023-08-30 15:40:57,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:40:57,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:40:57,816 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 15:40:57,844 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 15:40:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:40:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:40:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:40:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:40:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:40:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:40:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:40:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:40:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:40:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:40:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:40:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:40:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:40:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:40:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:40:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:40:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:40:57,874 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 15:40:58,012 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:40:58,014 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:40:58,479 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:40:58,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:40:58,632 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 15:40:58,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:58 BoogieIcfgContainer [2023-08-30 15:40:58,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:40:58,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:40:58,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:40:58,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:40:58,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:40:57" (1/3) ... [2023-08-30 15:40:58,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a306198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:40:58, skipping insertion in model container [2023-08-30 15:40:58,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:40:57" (2/3) ... [2023-08-30 15:40:58,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a306198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:40:58, skipping insertion in model container [2023-08-30 15:40:58,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:40:58" (3/3) ... [2023-08-30 15:40:58,641 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-08-30 15:40:58,648 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:40:58,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:40:58,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 15:40:58,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:40:58,755 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:40:58,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 242 transitions, 508 flow [2023-08-30 15:40:58,903 INFO L130 PetriNetUnfolder]: 18/239 cut-off events. [2023-08-30 15:40:58,904 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:40:58,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 239 events. 18/239 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 197. Up to 3 conditions per place. [2023-08-30 15:40:58,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 242 transitions, 508 flow [2023-08-30 15:40:58,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 457 flow [2023-08-30 15:40:58,927 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:40:58,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 221 transitions, 457 flow [2023-08-30 15:40:58,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 221 transitions, 457 flow [2023-08-30 15:40:58,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 221 transitions, 457 flow [2023-08-30 15:40:59,010 INFO L130 PetriNetUnfolder]: 17/221 cut-off events. [2023-08-30 15:40:59,011 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:40:59,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 221 events. 17/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 197. Up to 3 conditions per place. [2023-08-30 15:40:59,016 INFO L119 LiptonReduction]: Number of co-enabled transitions 3852 [2023-08-30 15:41:07,730 INFO L134 LiptonReduction]: Checked pairs total: 7130 [2023-08-30 15:41:07,730 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-30 15:41:07,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:41:07,748 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;@5d75809c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:41:07,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-30 15:41:07,752 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:41:07,752 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:41:07,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:07,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:41:07,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:07,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash 35337, now seen corresponding path program 1 times [2023-08-30 15:41:07,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118513989] [2023-08-30 15:41:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:08,015 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 15:41:08,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:08,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118513989] [2023-08-30 15:41:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118513989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:08,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:08,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853675479] [2023-08-30 15:41:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:08,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:08,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:41:08,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 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 15:41:08,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:08,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:41:08,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:08,966 INFO L130 PetriNetUnfolder]: 5377/7199 cut-off events. [2023-08-30 15:41:08,966 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2023-08-30 15:41:08,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14765 conditions, 7199 events. 5377/7199 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 36812 event pairs, 3536 based on Foata normal form. 0/2781 useless extension candidates. Maximal degree in co-relation 6685. Up to 3602 conditions per place. [2023-08-30 15:41:09,005 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-30 15:41:09,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 324 flow [2023-08-30 15:41:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-30 15:41:09,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825662482566248 [2023-08-30 15:41:09,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-30 15:41:09,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-30 15:41:09,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:09,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-30 15:41:09,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 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 15:41:09,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:09,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:09,036 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 692 transitions. [2023-08-30 15:41:09,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 324 flow [2023-08-30 15:41:09,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:09,046 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 122 flow [2023-08-30 15:41:09,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 15:41:09,051 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2023-08-30 15:41:09,051 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 122 flow [2023-08-30 15:41:09,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 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 15:41:09,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:09,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:09,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:41:09,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:09,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1097459, now seen corresponding path program 1 times [2023-08-30 15:41:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:09,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403691738] [2023-08-30 15:41:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:09,139 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 15:41:09,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:09,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403691738] [2023-08-30 15:41:09,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403691738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:09,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:09,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:09,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841262732] [2023-08-30 15:41:09,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:09,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:41:09,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 15:41:09,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:09,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:41:09,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:09,945 INFO L130 PetriNetUnfolder]: 5377/7197 cut-off events. [2023-08-30 15:41:09,946 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 15:41:09,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14649 conditions, 7197 events. 5377/7197 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 36610 event pairs, 3536 based on Foata normal form. 0/2785 useless extension candidates. Maximal degree in co-relation 7313. Up to 7195 conditions per place. [2023-08-30 15:41:09,985 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 39 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 15:41:09,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 194 flow [2023-08-30 15:41:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-08-30 15:41:09,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476987447698745 [2023-08-30 15:41:09,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-08-30 15:41:09,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-08-30 15:41:09,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:09,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-08-30 15:41:09,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 15:41:09,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:09,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:09,994 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 122 flow. Second operand 3 states and 642 transitions. [2023-08-30 15:41:09,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 194 flow [2023-08-30 15:41:09,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:09,996 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 108 flow [2023-08-30 15:41:09,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 15:41:09,997 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-08-30 15:41:09,997 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 108 flow [2023-08-30 15:41:09,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 15:41:09,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:09,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:41:09,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:09,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1097490, now seen corresponding path program 1 times [2023-08-30 15:41:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316141592] [2023-08-30 15:41:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:10,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316141592] [2023-08-30 15:41:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316141592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466674489] [2023-08-30 15:41:10,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:10,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:10,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:10,073 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 15:41:10,097 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 15:41:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:10,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:10,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:10,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466674489] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:10,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:10,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:41:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859344311] [2023-08-30 15:41:10,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:10,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:10,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:41:10,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 0 states have call successors, (0), 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 15:41:10,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:10,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:41:10,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:12,286 INFO L130 PetriNetUnfolder]: 13441/17988 cut-off events. [2023-08-30 15:41:12,287 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 15:41:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36594 conditions, 17988 events. 13441/17988 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 101501 event pairs, 8840 based on Foata normal form. 0/6956 useless extension candidates. Maximal degree in co-relation 36586. Up to 3600 conditions per place. [2023-08-30 15:41:12,388 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 160 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2023-08-30 15:41:12,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 174 transitions, 762 flow [2023-08-30 15:41:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1385 transitions. [2023-08-30 15:41:12,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829149232914923 [2023-08-30 15:41:12,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1385 transitions. [2023-08-30 15:41:12,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1385 transitions. [2023-08-30 15:41:12,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:12,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1385 transitions. [2023-08-30 15:41:12,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 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 15:41:12,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 15:41:12,463 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 15:41:12,463 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 108 flow. Second operand 6 states and 1385 transitions. [2023-08-30 15:41:12,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 174 transitions, 762 flow [2023-08-30 15:41:12,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 174 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:12,467 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 200 flow [2023-08-30 15:41:12,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-08-30 15:41:12,468 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-08-30 15:41:12,468 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 200 flow [2023-08-30 15:41:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 0 states have call successors, (0), 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 15:41:12,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:12,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:41:12,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:41:12,677 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 15:41:12,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:12,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1641809162, now seen corresponding path program 1 times [2023-08-30 15:41:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:12,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659374737] [2023-08-30 15:41:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:12,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:12,779 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 15:41:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659374737] [2023-08-30 15:41:12,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659374737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:12,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:12,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:12,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614071471] [2023-08-30 15:41:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:12,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-08-30 15:41:12,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 15:41:12,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:12,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-08-30 15:41:12,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:15,171 INFO L130 PetriNetUnfolder]: 17121/24488 cut-off events. [2023-08-30 15:41:15,171 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-08-30 15:41:15,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49972 conditions, 24488 events. 17121/24488 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 152398 event pairs, 8845 based on Foata normal form. 0/11236 useless extension candidates. Maximal degree in co-relation 49960. Up to 15169 conditions per place. [2023-08-30 15:41:15,302 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 15:41:15,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 77 transitions, 413 flow [2023-08-30 15:41:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-08-30 15:41:15,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755927475592748 [2023-08-30 15:41:15,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-08-30 15:41:15,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-08-30 15:41:15,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:15,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-08-30 15:41:15,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 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 15:41:15,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:15,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:15,311 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 200 flow. Second operand 3 states and 682 transitions. [2023-08-30 15:41:15,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 77 transitions, 413 flow [2023-08-30 15:41:15,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:15,315 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 195 flow [2023-08-30 15:41:15,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-08-30 15:41:15,316 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:41:15,316 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 195 flow [2023-08-30 15:41:15,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 15:41:15,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:15,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:41:15,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:41:15,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:15,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1641809190, now seen corresponding path program 1 times [2023-08-30 15:41:15,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:15,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502689537] [2023-08-30 15:41:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:15,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:15,459 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 15:41:15,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:15,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502689537] [2023-08-30 15:41:15,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502689537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:15,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:15,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:15,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590489419] [2023-08-30 15:41:15,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:15,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:15,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:15,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 478 [2023-08-30 15:41:15,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 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 15:41:15,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:15,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 478 [2023-08-30 15:41:15,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:17,490 INFO L130 PetriNetUnfolder]: 15886/22854 cut-off events. [2023-08-30 15:41:17,490 INFO L131 PetriNetUnfolder]: For 1694/2404 co-relation queries the response was YES. [2023-08-30 15:41:17,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49504 conditions, 22854 events. 15886/22854 cut-off events. For 1694/2404 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 145976 event pairs, 13490 based on Foata normal form. 1080/12413 useless extension candidates. Maximal degree in co-relation 49491. Up to 22547 conditions per place. [2023-08-30 15:41:17,611 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 66 selfloop transitions, 3 changer transitions 1/71 dead transitions. [2023-08-30 15:41:17,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 406 flow [2023-08-30 15:41:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 849 transitions. [2023-08-30 15:41:17,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440376569037657 [2023-08-30 15:41:17,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 849 transitions. [2023-08-30 15:41:17,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 849 transitions. [2023-08-30 15:41:17,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:17,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 849 transitions. [2023-08-30 15:41:17,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 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 15:41:17,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 15:41:17,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 15:41:17,623 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 195 flow. Second operand 4 states and 849 transitions. [2023-08-30 15:41:17,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 406 flow [2023-08-30 15:41:17,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:17,626 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2023-08-30 15:41:17,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-30 15:41:17,629 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-08-30 15:41:17,630 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2023-08-30 15:41:17,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.25) internal successors, (793), 4 states have internal predecessors, (793), 0 states have call successors, (0), 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 15:41:17,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:17,630 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:41:17,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:41:17,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:17,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1663339352, now seen corresponding path program 2 times [2023-08-30 15:41:17,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:17,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924698049] [2023-08-30 15:41:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:17,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924698049] [2023-08-30 15:41:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924698049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296789437] [2023-08-30 15:41:17,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:17,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:17,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:17,724 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 15:41:17,727 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 15:41:17,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:17,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:17,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:17,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:41:17,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:17,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296789437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:17,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:17,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:41:17,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476615877] [2023-08-30 15:41:17,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:17,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:17,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:41:17,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 478 [2023-08-30 15:41:17,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 15:41:17,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:17,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 478 [2023-08-30 15:41:17,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:19,713 INFO L130 PetriNetUnfolder]: 15886/22853 cut-off events. [2023-08-30 15:41:19,714 INFO L131 PetriNetUnfolder]: For 4429/5139 co-relation queries the response was YES. [2023-08-30 15:41:19,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54562 conditions, 22853 events. 15886/22853 cut-off events. For 4429/5139 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 147055 event pairs, 13490 based on Foata normal form. 711/12043 useless extension candidates. Maximal degree in co-relation 54547. Up to 22838 conditions per place. [2023-08-30 15:41:19,867 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 43 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-08-30 15:41:19,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 300 flow [2023-08-30 15:41:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-30 15:41:19,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504881450488145 [2023-08-30 15:41:19,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-30 15:41:19,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-30 15:41:19,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:19,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-30 15:41:19,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 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 15:41:19,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:19,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:19,876 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 3 states and 646 transitions. [2023-08-30 15:41:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 300 flow [2023-08-30 15:41:19,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 294 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:19,880 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 208 flow [2023-08-30 15:41:19,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-30 15:41:19,883 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-08-30 15:41:19,883 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 208 flow [2023-08-30 15:41:19,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 15:41:19,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:19,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:19,892 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 15:41:20,089 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,SelfDestructingSolverStorable5 [2023-08-30 15:41:20,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:20,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2381116, now seen corresponding path program 1 times [2023-08-30 15:41:20,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:20,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606756298] [2023-08-30 15:41:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:20,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:20,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606756298] [2023-08-30 15:41:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606756298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077076183] [2023-08-30 15:41:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:20,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:20,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:20,230 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 15:41:20,233 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 15:41:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:20,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:20,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:20,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:20,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077076183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:20,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:20,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:41:20,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671036982] [2023-08-30 15:41:20,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:20,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:20,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:41:20,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-08-30 15:41:20,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 15:41:20,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:20,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-08-30 15:41:20,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:21,490 INFO L130 PetriNetUnfolder]: 9146/13293 cut-off events. [2023-08-30 15:41:21,491 INFO L131 PetriNetUnfolder]: For 3792/4432 co-relation queries the response was YES. [2023-08-30 15:41:21,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31175 conditions, 13293 events. 9146/13293 cut-off events. For 3792/4432 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 78508 event pairs, 7500 based on Foata normal form. 640/8373 useless extension candidates. Maximal degree in co-relation 31159. Up to 13283 conditions per place. [2023-08-30 15:41:21,586 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 45 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-08-30 15:41:21,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 288 flow [2023-08-30 15:41:21,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-30 15:41:21,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45397489539748953 [2023-08-30 15:41:21,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-30 15:41:21,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-30 15:41:21,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:21,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-30 15:41:21,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 15:41:21,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:21,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:21,595 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 208 flow. Second operand 3 states and 651 transitions. [2023-08-30 15:41:21,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 288 flow [2023-08-30 15:41:21,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:21,597 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 186 flow [2023-08-30 15:41:21,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-30 15:41:21,598 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:41:21,598 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 186 flow [2023-08-30 15:41:21,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 15:41:21,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:21,599 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:41:21,607 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 15:41:21,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:21,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:21,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash 629787670, now seen corresponding path program 1 times [2023-08-30 15:41:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162619646] [2023-08-30 15:41:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162619646] [2023-08-30 15:41:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162619646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:21,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885713771] [2023-08-30 15:41:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:21,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:21,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:21,914 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 15:41:21,917 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 15:41:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:22,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:41:22,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:22,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:22,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885713771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:22,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:41:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922848586] [2023-08-30 15:41:22,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:22,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:41:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:41:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:41:22,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:41:22,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 202.15384615384616) internal successors, (2628), 13 states have internal predecessors, (2628), 0 states have call successors, (0), 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 15:41:22,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:22,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:41:22,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:24,422 INFO L130 PetriNetUnfolder]: 20120/29241 cut-off events. [2023-08-30 15:41:24,423 INFO L131 PetriNetUnfolder]: For 8360/9768 co-relation queries the response was YES. [2023-08-30 15:41:24,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68538 conditions, 29241 events. 20120/29241 cut-off events. For 8360/9768 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 183760 event pairs, 16500 based on Foata normal form. 1420/18422 useless extension candidates. Maximal degree in co-relation 68522. Up to 4489 conditions per place. [2023-08-30 15:41:24,606 INFO L137 encePairwiseOnDemand]: 473/478 looper letters, 323 selfloop transitions, 31 changer transitions 0/355 dead transitions. [2023-08-30 15:41:24,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 355 transitions, 1776 flow [2023-08-30 15:41:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:41:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:41:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2761 transitions. [2023-08-30 15:41:24,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813458856345886 [2023-08-30 15:41:24,614 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2761 transitions. [2023-08-30 15:41:24,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2761 transitions. [2023-08-30 15:41:24,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:24,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2761 transitions. [2023-08-30 15:41:24,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 230.08333333333334) internal successors, (2761), 12 states have internal predecessors, (2761), 0 states have call successors, (0), 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 15:41:24,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 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 15:41:24,630 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 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 15:41:24,630 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 186 flow. Second operand 12 states and 2761 transitions. [2023-08-30 15:41:24,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 355 transitions, 1776 flow [2023-08-30 15:41:24,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 355 transitions, 1775 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:24,636 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 395 flow [2023-08-30 15:41:24,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-30 15:41:24,637 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-08-30 15:41:24,637 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 395 flow [2023-08-30 15:41:24,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 202.15384615384616) internal successors, (2628), 13 states have internal predecessors, (2628), 0 states have call successors, (0), 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 15:41:24,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:24,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:24,647 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 15:41:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:24,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:24,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -73812637, now seen corresponding path program 1 times [2023-08-30 15:41:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683758858] [2023-08-30 15:41:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683758858] [2023-08-30 15:41:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683758858] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156077805] [2023-08-30 15:41:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:24,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:24,905 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 15:41:24,907 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 15:41:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:24,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:24,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:25,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:25,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156077805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:25,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:25,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:41:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662380483] [2023-08-30 15:41:25,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:25,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:25,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-08-30 15:41:25,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 206.85714285714286) internal successors, (1448), 7 states have internal predecessors, (1448), 0 states have call successors, (0), 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 15:41:25,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:25,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-08-30 15:41:25,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:29,828 INFO L130 PetriNetUnfolder]: 48456/68753 cut-off events. [2023-08-30 15:41:29,829 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-08-30 15:41:30,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161662 conditions, 68753 events. 48456/68753 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 1922. Compared 462602 event pairs, 10164 based on Foata normal form. 0/40723 useless extension candidates. Maximal degree in co-relation 161639. Up to 18704 conditions per place. [2023-08-30 15:41:30,297 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 172 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2023-08-30 15:41:30,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 181 transitions, 1042 flow [2023-08-30 15:41:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:41:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:41:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1589 transitions. [2023-08-30 15:41:30,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47489539748953974 [2023-08-30 15:41:30,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1589 transitions. [2023-08-30 15:41:30,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1589 transitions. [2023-08-30 15:41:30,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:30,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1589 transitions. [2023-08-30 15:41:30,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 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 15:41:30,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 15:41:30,309 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 478.0) internal successors, (3824), 8 states have internal predecessors, (3824), 0 states have call successors, (0), 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 15:41:30,310 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 395 flow. Second operand 7 states and 1589 transitions. [2023-08-30 15:41:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 181 transitions, 1042 flow [2023-08-30 15:41:30,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 181 transitions, 952 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:30,321 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 364 flow [2023-08-30 15:41:30,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-08-30 15:41:30,322 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2023-08-30 15:41:30,322 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 364 flow [2023-08-30 15:41:30,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.85714285714286) internal successors, (1448), 7 states have internal predecessors, (1448), 0 states have call successors, (0), 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 15:41:30,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:30,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:30,330 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 15:41:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:30,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:30,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2006776608, now seen corresponding path program 1 times [2023-08-30 15:41:30,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:30,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585990248] [2023-08-30 15:41:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:30,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:30,655 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 15:41:30,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585990248] [2023-08-30 15:41:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585990248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455680071] [2023-08-30 15:41:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:30,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:30,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:30,657 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 15:41:30,660 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 15:41:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:41:30,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:30,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:30,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455680071] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:30,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:30,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2023-08-30 15:41:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969286421] [2023-08-30 15:41:30,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:30,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:41:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:41:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:41:31,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 478 [2023-08-30 15:41:31,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 192.58333333333334) internal successors, (2311), 12 states have internal predecessors, (2311), 0 states have call successors, (0), 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 15:41:31,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:31,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 478 [2023-08-30 15:41:31,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:37,721 INFO L130 PetriNetUnfolder]: 52691/76124 cut-off events. [2023-08-30 15:41:37,721 INFO L131 PetriNetUnfolder]: For 103301/108603 co-relation queries the response was YES. [2023-08-30 15:41:37,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197002 conditions, 76124 events. 52691/76124 cut-off events. For 103301/108603 co-relation queries the response was YES. Maximal size of possible extension queue 2309. Compared 524762 event pairs, 36421 based on Foata normal form. 10450/58237 useless extension candidates. Maximal degree in co-relation 196977. Up to 63413 conditions per place. [2023-08-30 15:41:38,193 INFO L137 encePairwiseOnDemand]: 469/478 looper letters, 161 selfloop transitions, 11 changer transitions 3/176 dead transitions. [2023-08-30 15:41:38,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 176 transitions, 1084 flow [2023-08-30 15:41:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:41:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:41:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2037 transitions. [2023-08-30 15:41:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261506276150628 [2023-08-30 15:41:38,199 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2037 transitions. [2023-08-30 15:41:38,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2037 transitions. [2023-08-30 15:41:38,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:38,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2037 transitions. [2023-08-30 15:41:38,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 203.7) internal successors, (2037), 10 states have internal predecessors, (2037), 0 states have call successors, (0), 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 15:41:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 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 15:41:38,210 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 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 15:41:38,210 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 364 flow. Second operand 10 states and 2037 transitions. [2023-08-30 15:41:38,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 176 transitions, 1084 flow [2023-08-30 15:41:38,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 176 transitions, 1069 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:38,297 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 456 flow [2023-08-30 15:41:38,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2023-08-30 15:41:38,297 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-08-30 15:41:38,298 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 456 flow [2023-08-30 15:41:38,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 192.58333333333334) internal successors, (2311), 12 states have internal predecessors, (2311), 0 states have call successors, (0), 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 15:41:38,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:38,299 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:38,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:38,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:38,506 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:38,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -836431156, now seen corresponding path program 2 times [2023-08-30 15:41:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:38,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144285023] [2023-08-30 15:41:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:41:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:38,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144285023] [2023-08-30 15:41:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144285023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:38,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232456771] [2023-08-30 15:41:38,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:38,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:38,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:38,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:38,588 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 15:41:38,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:41:38,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:38,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:38,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:41:38,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:38,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232456771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:38,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:41:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304928120] [2023-08-30 15:41:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:38,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:38,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-08-30 15:41:38,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 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 15:41:38,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:38,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-08-30 15:41:38,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:45,422 INFO L130 PetriNetUnfolder]: 53021/78005 cut-off events. [2023-08-30 15:41:45,422 INFO L131 PetriNetUnfolder]: For 40010/40010 co-relation queries the response was YES. [2023-08-30 15:41:45,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208080 conditions, 78005 events. 53021/78005 cut-off events. For 40010/40010 co-relation queries the response was YES. Maximal size of possible extension queue 2201. Compared 571404 event pairs, 3597 based on Foata normal form. 2200/52572 useless extension candidates. Maximal degree in co-relation 208048. Up to 49874 conditions per place. [2023-08-30 15:41:45,944 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-30 15:41:45,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 775 flow [2023-08-30 15:41:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-08-30 15:41:45,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686192468619247 [2023-08-30 15:41:45,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-08-30 15:41:45,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-08-30 15:41:45,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:45,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-08-30 15:41:45,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 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 15:41:45,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 15:41:45,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 15:41:45,951 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 456 flow. Second operand 4 states and 896 transitions. [2023-08-30 15:41:45,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 775 flow [2023-08-30 15:41:46,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 115 transitions, 762 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:46,842 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 428 flow [2023-08-30 15:41:46,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2023-08-30 15:41:46,843 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2023-08-30 15:41:46,843 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 428 flow [2023-08-30 15:41:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 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 15:41:46,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:46,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:46,851 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 15:41:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:47,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:47,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1981082682, now seen corresponding path program 1 times [2023-08-30 15:41:47,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:47,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116473927] [2023-08-30 15:41:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:47,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:47,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116473927] [2023-08-30 15:41:47,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116473927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:47,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:47,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:41:47,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905030684] [2023-08-30 15:41:47,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:47,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 478 [2023-08-30 15:41:47,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 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 15:41:47,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:47,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 478 [2023-08-30 15:41:47,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:53,061 INFO L130 PetriNetUnfolder]: 43011/63690 cut-off events. [2023-08-30 15:41:53,061 INFO L131 PetriNetUnfolder]: For 98518/103440 co-relation queries the response was YES. [2023-08-30 15:41:53,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172635 conditions, 63690 events. 43011/63690 cut-off events. For 98518/103440 co-relation queries the response was YES. Maximal size of possible extension queue 2073. Compared 456844 event pairs, 36319 based on Foata normal form. 5154/46203 useless extension candidates. Maximal degree in co-relation 172603. Up to 62769 conditions per place. [2023-08-30 15:41:53,555 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 74 selfloop transitions, 14 changer transitions 6/95 dead transitions. [2023-08-30 15:41:53,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 730 flow [2023-08-30 15:41:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-30 15:41:53,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424686192468619 [2023-08-30 15:41:53,558 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-30 15:41:53,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-30 15:41:53,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:53,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-30 15:41:53,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 0 states have call successors, (0), 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 15:41:53,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 15:41:53,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 15:41:53,564 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 428 flow. Second operand 4 states and 846 transitions. [2023-08-30 15:41:53,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 730 flow [2023-08-30 15:41:53,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:53,613 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 491 flow [2023-08-30 15:41:53,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-08-30 15:41:53,613 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2023-08-30 15:41:53,614 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 491 flow [2023-08-30 15:41:53,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 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 15:41:53,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:53,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:53,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:41:53,615 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:53,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:53,615 INFO L85 PathProgramCache]: Analyzing trace with hash -593899677, now seen corresponding path program 1 times [2023-08-30 15:41:53,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:53,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216254156] [2023-08-30 15:41:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:53,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:41:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216254156] [2023-08-30 15:41:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216254156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:53,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:53,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209842573] [2023-08-30 15:41:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:53,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:53,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:41:53,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 15:41:53,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:53,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:41:53,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:59,017 INFO L130 PetriNetUnfolder]: 39107/58234 cut-off events. [2023-08-30 15:41:59,017 INFO L131 PetriNetUnfolder]: For 61573/63391 co-relation queries the response was YES. [2023-08-30 15:41:59,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180103 conditions, 58234 events. 39107/58234 cut-off events. For 61573/63391 co-relation queries the response was YES. Maximal size of possible extension queue 1862. Compared 412522 event pairs, 9983 based on Foata normal form. 2110/39704 useless extension candidates. Maximal degree in co-relation 180069. Up to 56337 conditions per place. [2023-08-30 15:41:59,479 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 80 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 15:41:59,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 700 flow [2023-08-30 15:41:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-30 15:41:59,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45327754532775455 [2023-08-30 15:41:59,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-30 15:41:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-30 15:41:59,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:59,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-30 15:41:59,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 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 15:41:59,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:59,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:41:59,484 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 491 flow. Second operand 3 states and 650 transitions. [2023-08-30 15:41:59,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 700 flow [2023-08-30 15:41:59,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 669 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:59,817 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 481 flow [2023-08-30 15:41:59,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2023-08-30 15:41:59,817 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-30 15:41:59,818 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 481 flow [2023-08-30 15:41:59,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 15:41:59,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:59,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:59,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:41:59,818 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:41:59,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1857744549, now seen corresponding path program 1 times [2023-08-30 15:41:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:59,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556212784] [2023-08-30 15:41:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:59,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556212784] [2023-08-30 15:41:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556212784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:59,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869150856] [2023-08-30 15:41:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:59,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:59,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:59,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:41:59,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 481 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 15:41:59,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:59,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:41:59,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:05,421 INFO L130 PetriNetUnfolder]: 42127/62214 cut-off events. [2023-08-30 15:42:05,421 INFO L131 PetriNetUnfolder]: For 95079/95937 co-relation queries the response was YES. [2023-08-30 15:42:05,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202196 conditions, 62214 events. 42127/62214 cut-off events. For 95079/95937 co-relation queries the response was YES. Maximal size of possible extension queue 1914. Compared 431809 event pairs, 10035 based on Foata normal form. 2418/42072 useless extension candidates. Maximal degree in co-relation 202161. Up to 50281 conditions per place. [2023-08-30 15:42:05,927 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 86 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-30 15:42:05,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 751 flow [2023-08-30 15:42:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:42:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:42:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-08-30 15:42:05,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45676429567642957 [2023-08-30 15:42:05,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-08-30 15:42:05,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-08-30 15:42:05,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:05,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-08-30 15:42:05,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 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 15:42:05,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:05,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:05,933 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 481 flow. Second operand 3 states and 655 transitions. [2023-08-30 15:42:05,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 751 flow [2023-08-30 15:42:05,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 726 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-30 15:42:05,982 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 513 flow [2023-08-30 15:42:05,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2023-08-30 15:42:05,982 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-30 15:42:05,982 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 513 flow [2023-08-30 15:42:05,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 15:42:05,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:05,983 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:05,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:42:05,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:42:05,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1280765367, now seen corresponding path program 2 times [2023-08-30 15:42:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:05,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571267099] [2023-08-30 15:42:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:05,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:42:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571267099] [2023-08-30 15:42:06,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571267099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887067784] [2023-08-30 15:42:06,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:42:06,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:06,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:06,073 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 15:42:06,077 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 15:42:06,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:42:06,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:42:06,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:42:06,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 15:42:06,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:42:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887067784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:42:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:42:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 15:42:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404392204] [2023-08-30 15:42:06,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:42:06,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:42:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:42:06,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:42:06,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-08-30 15:42:06,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 15:42:06,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:06,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-08-30 15:42:06,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:11,871 INFO L130 PetriNetUnfolder]: 39375/58342 cut-off events. [2023-08-30 15:42:11,872 INFO L131 PetriNetUnfolder]: For 56064/56922 co-relation queries the response was YES. [2023-08-30 15:42:12,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198195 conditions, 58342 events. 39375/58342 cut-off events. For 56064/56922 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 404113 event pairs, 27043 based on Foata normal form. 1978/42200 useless extension candidates. Maximal degree in co-relation 198158. Up to 58309 conditions per place. [2023-08-30 15:42:12,339 INFO L137 encePairwiseOnDemand]: 476/478 looper letters, 74 selfloop transitions, 1 changer transitions 1/77 dead transitions. [2023-08-30 15:42:12,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 77 transitions, 655 flow [2023-08-30 15:42:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:42:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:42:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-30 15:42:12,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511854951185495 [2023-08-30 15:42:12,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-30 15:42:12,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-30 15:42:12,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:12,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-30 15:42:12,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 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 15:42:12,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:12,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:12,343 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 513 flow. Second operand 3 states and 647 transitions. [2023-08-30 15:42:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 77 transitions, 655 flow [2023-08-30 15:42:12,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 638 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:42:12,384 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 482 flow [2023-08-30 15:42:12,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-08-30 15:42:12,385 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-30 15:42:12,385 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 482 flow [2023-08-30 15:42:12,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 15:42:12,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:12,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:12,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:12,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:42:12,586 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:42:12,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:12,586 INFO L85 PathProgramCache]: Analyzing trace with hash -423660763, now seen corresponding path program 1 times [2023-08-30 15:42:12,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:12,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57902754] [2023-08-30 15:42:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:12,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:12,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:12,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57902754] [2023-08-30 15:42:12,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57902754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:12,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093123729] [2023-08-30 15:42:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:12,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:12,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:12,679 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 15:42:12,682 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 15:42:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:12,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:42:12,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:42:12,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:42:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093123729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:42:12,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:42:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:42:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280137892] [2023-08-30 15:42:12,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:42:12,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:42:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:42:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:42:12,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 478 [2023-08-30 15:42:12,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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 15:42:12,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:12,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 478 [2023-08-30 15:42:12,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:16,796 INFO L130 PetriNetUnfolder]: 28892/42539 cut-off events. [2023-08-30 15:42:16,797 INFO L131 PetriNetUnfolder]: For 26743/27103 co-relation queries the response was YES. [2023-08-30 15:42:17,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139923 conditions, 42539 events. 28892/42539 cut-off events. For 26743/27103 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 278617 event pairs, 18580 based on Foata normal form. 3180/31759 useless extension candidates. Maximal degree in co-relation 139889. Up to 42509 conditions per place. [2023-08-30 15:42:17,132 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 72 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-30 15:42:17,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 618 flow [2023-08-30 15:42:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:42:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:42:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-30 15:42:17,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504881450488145 [2023-08-30 15:42:17,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-30 15:42:17,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-30 15:42:17,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:17,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-30 15:42:17,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 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 15:42:17,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:17,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:17,137 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 482 flow. Second operand 3 states and 646 transitions. [2023-08-30 15:42:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 618 flow [2023-08-30 15:42:17,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 593 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 15:42:17,170 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 449 flow [2023-08-30 15:42:17,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2023-08-30 15:42:17,170 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-30 15:42:17,170 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 449 flow [2023-08-30 15:42:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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 15:42:17,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:17,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:17,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 15:42:17,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 15:42:17,372 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:42:17,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:17,372 INFO L85 PathProgramCache]: Analyzing trace with hash -423660575, now seen corresponding path program 1 times [2023-08-30 15:42:17,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:17,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554380062] [2023-08-30 15:42:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:17,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:17,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554380062] [2023-08-30 15:42:17,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554380062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409751805] [2023-08-30 15:42:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:17,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:17,925 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 15:42:17,934 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 15:42:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:18,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 15:42:18,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:18,135 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 15 treesize of output 11 [2023-08-30 15:42:18,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:18,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:42:18,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:18,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:42:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:18,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:18,474 WARN L839 $PredicateComparison]: unable to prove that (forall ((~q2_back~0 Int) (v_ArrVal_584 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483648) (< ~q2_back~0 0) (<= c_~n2~0 ~q2_back~0))) is different from false [2023-08-30 15:42:18,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:18,567 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 29 treesize of output 30 [2023-08-30 15:42:18,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:18,579 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 79 treesize of output 71 [2023-08-30 15:42:18,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-08-30 15:42:18,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-08-30 15:42:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409751805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:18,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2023-08-30 15:42:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292209833] [2023-08-30 15:42:18,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 15:42:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 15:42:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=331, Unknown=1, NotChecked=36, Total=420 [2023-08-30 15:42:18,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 478 [2023-08-30 15:42:18,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 449 flow. Second operand has 21 states, 21 states have (on average 141.71428571428572) internal successors, (2976), 21 states have internal predecessors, (2976), 0 states have call successors, (0), 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 15:42:18,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:18,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 478 [2023-08-30 15:42:18,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:26,509 INFO L130 PetriNetUnfolder]: 29192/43159 cut-off events. [2023-08-30 15:42:26,509 INFO L131 PetriNetUnfolder]: For 21575/21963 co-relation queries the response was YES. [2023-08-30 15:42:26,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122953 conditions, 43159 events. 29192/43159 cut-off events. For 21575/21963 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 284114 event pairs, 16192 based on Foata normal form. 388/29609 useless extension candidates. Maximal degree in co-relation 122919. Up to 41675 conditions per place. [2023-08-30 15:42:26,818 INFO L137 encePairwiseOnDemand]: 462/478 looper letters, 147 selfloop transitions, 86 changer transitions 0/234 dead transitions. [2023-08-30 15:42:26,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 234 transitions, 1608 flow [2023-08-30 15:42:26,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 15:42:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 15:42:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5076 transitions. [2023-08-30 15:42:26,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30340705319784816 [2023-08-30 15:42:26,827 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5076 transitions. [2023-08-30 15:42:26,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5076 transitions. [2023-08-30 15:42:26,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:26,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5076 transitions. [2023-08-30 15:42:26,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 145.02857142857144) internal successors, (5076), 35 states have internal predecessors, (5076), 0 states have call successors, (0), 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 15:42:26,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 478.0) internal successors, (17208), 36 states have internal predecessors, (17208), 0 states have call successors, (0), 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 15:42:26,848 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 478.0) internal successors, (17208), 36 states have internal predecessors, (17208), 0 states have call successors, (0), 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 15:42:26,848 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 449 flow. Second operand 35 states and 5076 transitions. [2023-08-30 15:42:26,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 234 transitions, 1608 flow [2023-08-30 15:42:26,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 234 transitions, 1607 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:42:26,859 INFO L231 Difference]: Finished difference. Result has 133 places, 141 transitions, 1034 flow [2023-08-30 15:42:26,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1034, PETRI_PLACES=133, PETRI_TRANSITIONS=141} [2023-08-30 15:42:26,860 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2023-08-30 15:42:26,860 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 141 transitions, 1034 flow [2023-08-30 15:42:26,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 141.71428571428572) internal successors, (2976), 21 states have internal predecessors, (2976), 0 states have call successors, (0), 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 15:42:26,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:26,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:26,869 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 15:42:27,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:42:27,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:42:27,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -567670413, now seen corresponding path program 1 times [2023-08-30 15:42:27,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:27,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259631689] [2023-08-30 15:42:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:42:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259631689] [2023-08-30 15:42:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259631689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225877431] [2023-08-30 15:42:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:27,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:27,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:27,801 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 15:42:27,829 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 15:42:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:27,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 15:42:27,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:28,008 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 15:42:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:28,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:42:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:28,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:42:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:28,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:28,283 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int)) (~q2_back~0 Int)) (or (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_636) c_~q2~0.base) (+ c_~q2~0.offset (* ~q2_back~0 4))) 2147483649)) (< ~q2_back~0 0) (<= c_~n2~0 ~q2_back~0))) is different from false [2023-08-30 15:42:28,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:28,369 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 31 treesize of output 32 [2023-08-30 15:42:28,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:28,379 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 89 treesize of output 81 [2023-08-30 15:42:28,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2023-08-30 15:42:28,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2023-08-30 15:42:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225877431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:28,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 21 [2023-08-30 15:42:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284960121] [2023-08-30 15:42:28,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:28,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 15:42:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 15:42:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2023-08-30 15:42:28,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 478 [2023-08-30 15:42:28,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 141 transitions, 1034 flow. Second operand has 23 states, 23 states have (on average 137.56521739130434) internal successors, (3164), 23 states have internal predecessors, (3164), 0 states have call successors, (0), 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 15:42:28,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:28,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 478 [2023-08-30 15:42:28,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:37,663 INFO L130 PetriNetUnfolder]: 30107/44849 cut-off events. [2023-08-30 15:42:37,663 INFO L131 PetriNetUnfolder]: For 139354/139744 co-relation queries the response was YES. [2023-08-30 15:42:38,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171354 conditions, 44849 events. 30107/44849 cut-off events. For 139354/139744 co-relation queries the response was YES. Maximal size of possible extension queue 1279. Compared 302216 event pairs, 17521 based on Foata normal form. 390/34717 useless extension candidates. Maximal degree in co-relation 171302. Up to 42809 conditions per place. [2023-08-30 15:42:38,163 INFO L137 encePairwiseOnDemand]: 462/478 looper letters, 155 selfloop transitions, 120 changer transitions 11/287 dead transitions. [2023-08-30 15:42:38,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 287 transitions, 2586 flow [2023-08-30 15:42:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-30 15:42:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-30 15:42:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4790 transitions. [2023-08-30 15:42:38,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2947329559438838 [2023-08-30 15:42:38,168 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4790 transitions. [2023-08-30 15:42:38,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4790 transitions. [2023-08-30 15:42:38,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:38,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4790 transitions. [2023-08-30 15:42:38,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 140.88235294117646) internal successors, (4790), 34 states have internal predecessors, (4790), 0 states have call successors, (0), 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 15:42:38,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 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 15:42:38,188 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 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 15:42:38,188 INFO L175 Difference]: Start difference. First operand has 133 places, 141 transitions, 1034 flow. Second operand 34 states and 4790 transitions. [2023-08-30 15:42:38,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 287 transitions, 2586 flow [2023-08-30 15:42:40,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 287 transitions, 2489 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-08-30 15:42:40,244 INFO L231 Difference]: Finished difference. Result has 169 places, 192 transitions, 1747 flow [2023-08-30 15:42:40,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1747, PETRI_PLACES=169, PETRI_TRANSITIONS=192} [2023-08-30 15:42:40,245 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 119 predicate places. [2023-08-30 15:42:40,245 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 192 transitions, 1747 flow [2023-08-30 15:42:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 137.56521739130434) internal successors, (3164), 23 states have internal predecessors, (3164), 0 states have call successors, (0), 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 15:42:40,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:40,246 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 15:42:40,251 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 15:42:40,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:42:40,447 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:42:40,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:40,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1998585994, now seen corresponding path program 2 times [2023-08-30 15:42:40,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:40,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203055764] [2023-08-30 15:42:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:40,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:42:40,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203055764] [2023-08-30 15:42:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203055764] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:40,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982806574] [2023-08-30 15:42:40,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:42:40,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:40,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:40,613 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 15:42:40,639 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 15:42:40,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:42:40,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:42:40,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:42:40,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 15:42:40,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:42:40,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982806574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:42:40,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:42:40,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 15:42:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560190588] [2023-08-30 15:42:40,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:42:40,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:42:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:42:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:42:40,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2023-08-30 15:42:40,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 192 transitions, 1747 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 15:42:40,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:40,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2023-08-30 15:42:40,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:42:46,092 INFO L130 PetriNetUnfolder]: 30037/44664 cut-off events. [2023-08-30 15:42:46,092 INFO L131 PetriNetUnfolder]: For 217079/217363 co-relation queries the response was YES. [2023-08-30 15:42:46,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186976 conditions, 44664 events. 30037/44664 cut-off events. For 217079/217363 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 300626 event pairs, 18734 based on Foata normal form. 287/39191 useless extension candidates. Maximal degree in co-relation 186916. Up to 44636 conditions per place. [2023-08-30 15:42:46,586 INFO L137 encePairwiseOnDemand]: 476/478 looper letters, 183 selfloop transitions, 1 changer transitions 4/189 dead transitions. [2023-08-30 15:42:46,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 189 transitions, 2042 flow [2023-08-30 15:42:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:42:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:42:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-08-30 15:42:46,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407252440725244 [2023-08-30 15:42:46,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-08-30 15:42:46,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-08-30 15:42:46,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:42:46,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-08-30 15:42:46,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 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 15:42:46,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:46,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 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 15:42:46,590 INFO L175 Difference]: Start difference. First operand has 169 places, 192 transitions, 1747 flow. Second operand 3 states and 632 transitions. [2023-08-30 15:42:46,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 189 transitions, 2042 flow [2023-08-30 15:42:49,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 189 transitions, 1763 flow, removed 74 selfloop flow, removed 25 redundant places. [2023-08-30 15:42:49,643 INFO L231 Difference]: Finished difference. Result has 144 places, 185 transitions, 1370 flow [2023-08-30 15:42:49,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1370, PETRI_PLACES=144, PETRI_TRANSITIONS=185} [2023-08-30 15:42:49,643 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2023-08-30 15:42:49,643 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 185 transitions, 1370 flow [2023-08-30 15:42:49,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 15:42:49,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:42:49,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:42:49,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 15:42:49,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:49,845 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:42:49,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:42:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1354308895, now seen corresponding path program 1 times [2023-08-30 15:42:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:42:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890624008] [2023-08-30 15:42:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:49,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:42:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:42:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890624008] [2023-08-30 15:42:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890624008] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:42:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678063838] [2023-08-30 15:42:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:42:50,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:42:50,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:42:50,410 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 15:42:50,411 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 15:42:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:42:50,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 15:42:50,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:42:50,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:50,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:42:50,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:42:50,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 15:42:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:50,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:42:50,892 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_766) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483648)) is different from false [2023-08-30 15:42:50,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:42:50,945 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 80 treesize of output 72 [2023-08-30 15:42:50,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-08-30 15:42:50,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-08-30 15:42:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:42:51,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678063838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:42:51,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:42:51,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-08-30 15:42:51,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585189252] [2023-08-30 15:42:51,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:42:51,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 15:42:51,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:42:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 15:42:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=463, Unknown=7, NotChecked=44, Total=600 [2023-08-30 15:42:51,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 478 [2023-08-30 15:42:51,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 185 transitions, 1370 flow. Second operand has 25 states, 25 states have (on average 148.56) internal successors, (3714), 25 states have internal predecessors, (3714), 0 states have call successors, (0), 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 15:42:51,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:42:51,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 478 [2023-08-30 15:42:51,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:07,748 INFO L130 PetriNetUnfolder]: 42573/63813 cut-off events. [2023-08-30 15:43:07,748 INFO L131 PetriNetUnfolder]: For 238068/238458 co-relation queries the response was YES. [2023-08-30 15:43:08,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256601 conditions, 63813 events. 42573/63813 cut-off events. For 238068/238458 co-relation queries the response was YES. Maximal size of possible extension queue 1928. Compared 462791 event pairs, 3502 based on Foata normal form. 1637/59330 useless extension candidates. Maximal degree in co-relation 256554. Up to 25508 conditions per place. [2023-08-30 15:43:08,611 INFO L137 encePairwiseOnDemand]: 465/478 looper letters, 339 selfloop transitions, 141 changer transitions 1/482 dead transitions. [2023-08-30 15:43:08,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 482 transitions, 4099 flow [2023-08-30 15:43:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 15:43:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 15:43:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3603 transitions. [2023-08-30 15:43:08,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277242132072039 [2023-08-30 15:43:08,615 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3603 transitions. [2023-08-30 15:43:08,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3603 transitions. [2023-08-30 15:43:08,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:08,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3603 transitions. [2023-08-30 15:43:08,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 156.65217391304347) internal successors, (3603), 23 states have internal predecessors, (3603), 0 states have call successors, (0), 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 15:43:08,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 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 15:43:08,623 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 478.0) internal successors, (11472), 24 states have internal predecessors, (11472), 0 states have call successors, (0), 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 15:43:08,623 INFO L175 Difference]: Start difference. First operand has 144 places, 185 transitions, 1370 flow. Second operand 23 states and 3603 transitions. [2023-08-30 15:43:08,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 482 transitions, 4099 flow [2023-08-30 15:43:14,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 482 transitions, 4066 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 15:43:14,741 INFO L231 Difference]: Finished difference. Result has 171 places, 264 transitions, 2644 flow [2023-08-30 15:43:14,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2644, PETRI_PLACES=171, PETRI_TRANSITIONS=264} [2023-08-30 15:43:14,742 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 121 predicate places. [2023-08-30 15:43:14,742 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 264 transitions, 2644 flow [2023-08-30 15:43:14,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 148.56) internal successors, (3714), 25 states have internal predecessors, (3714), 0 states have call successors, (0), 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 15:43:14,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:14,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:14,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 15:43:14,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-08-30 15:43:14,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:14,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 632055745, now seen corresponding path program 1 times [2023-08-30 15:43:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:14,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564271262] [2023-08-30 15:43:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:43:15,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:15,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564271262] [2023-08-30 15:43:15,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564271262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:15,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109832549] [2023-08-30 15:43:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:15,513 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 15:43:15,517 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 15:43:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:15,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-30 15:43:15,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:15,719 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 15 treesize of output 11 [2023-08-30 15:43:15,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:15,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 15:43:15,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:15,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 15:43:15,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:15,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 15:43:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:43:15,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:43:20,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:43:20,367 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 34 treesize of output 35 [2023-08-30 15:43:20,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:43:20,380 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 683 treesize of output 651 [2023-08-30 15:43:20,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2023-08-30 15:43:20,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2023-08-30 15:43:20,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 54 [2023-08-30 15:43:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:43:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109832549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:20,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-08-30 15:43:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978011876] [2023-08-30 15:43:20,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:20,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 15:43:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 15:43:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=431, Unknown=7, NotChecked=0, Total=506 [2023-08-30 15:43:23,886 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 15:43:26,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:26,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 478 [2023-08-30 15:43:26,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 264 transitions, 2644 flow. Second operand has 23 states, 23 states have (on average 146.6086956521739) internal successors, (3372), 23 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:26,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:26,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 478 [2023-08-30 15:43:26,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:28,910 WARN L539 Checker$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 15:43:38,155 INFO L130 PetriNetUnfolder]: 43362/65260 cut-off events. [2023-08-30 15:43:38,155 INFO L131 PetriNetUnfolder]: For 471576/471988 co-relation queries the response was YES. [2023-08-30 15:43:38,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315486 conditions, 65260 events. 43362/65260 cut-off events. For 471576/471988 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 477544 event pairs, 22143 based on Foata normal form. 931/59909 useless extension candidates. Maximal degree in co-relation 315425. Up to 50679 conditions per place. [2023-08-30 15:43:39,015 INFO L137 encePairwiseOnDemand]: 467/478 looper letters, 397 selfloop transitions, 124 changer transitions 0/522 dead transitions. [2023-08-30 15:43:39,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 522 transitions, 6216 flow [2023-08-30 15:43:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:43:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:43:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2170 transitions. [2023-08-30 15:43:39,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32426778242677823 [2023-08-30 15:43:39,017 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2170 transitions. [2023-08-30 15:43:39,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2170 transitions. [2023-08-30 15:43:39,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:39,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2170 transitions. [2023-08-30 15:43:39,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 155.0) internal successors, (2170), 14 states have internal predecessors, (2170), 0 states have call successors, (0), 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 15:43:39,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 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 15:43:39,022 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 478.0) internal successors, (7170), 15 states have internal predecessors, (7170), 0 states have call successors, (0), 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 15:43:39,022 INFO L175 Difference]: Start difference. First operand has 171 places, 264 transitions, 2644 flow. Second operand 14 states and 2170 transitions. [2023-08-30 15:43:39,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 522 transitions, 6216 flow [2023-08-30 15:43:50,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 522 transitions, 5798 flow, removed 187 selfloop flow, removed 7 redundant places. [2023-08-30 15:43:50,676 INFO L231 Difference]: Finished difference. Result has 182 places, 303 transitions, 3336 flow [2023-08-30 15:43:50,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3336, PETRI_PLACES=182, PETRI_TRANSITIONS=303} [2023-08-30 15:43:50,677 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 132 predicate places. [2023-08-30 15:43:50,677 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 303 transitions, 3336 flow [2023-08-30 15:43:50,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 146.6086956521739) internal successors, (3372), 23 states have internal predecessors, (3372), 0 states have call successors, (0), 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 15:43:50,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:50,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:50,682 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 15:43:50,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:50,879 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:50,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2035568915, now seen corresponding path program 1 times [2023-08-30 15:43:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079108757] [2023-08-30 15:43:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:43:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079108757] [2023-08-30 15:43:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079108757] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603416201] [2023-08-30 15:43:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:51,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:51,234 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 15:43:51,237 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 15:43:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:51,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 15:43:51,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:51,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:51,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:43:51,403 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 15:43:51,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-30 15:43:51,470 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 15:43:51,536 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:43:51,536 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 11 treesize of output 11 [2023-08-30 15:43:51,592 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 15:43:51,631 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 15:43:51,681 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 15:43:51,759 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 15:43:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:51,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:43:52,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:43:52,376 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 72 treesize of output 60 [2023-08-30 15:43:52,403 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-30 15:43:52,404 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 10028 treesize of output 9775 [2023-08-30 15:43:52,512 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:43:52,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 398 [2023-08-30 15:43:52,524 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:43:52,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 386 [2023-08-30 15:43:52,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 15:43:52,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 362 [2023-08-30 15:43:52,561 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 15:43:52,561 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 409 treesize of output 313 [2023-08-30 15:43:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603416201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:52,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 26 [2023-08-30 15:43:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66513429] [2023-08-30 15:43:52,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 15:43:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 15:43:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=571, Unknown=20, NotChecked=0, Total=756 [2023-08-30 15:43:53,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-30 15:43:53,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 303 transitions, 3336 flow. Second operand has 28 states, 28 states have (on average 142.39285714285714) internal successors, (3987), 28 states have internal predecessors, (3987), 0 states have call successors, (0), 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 15:43:53,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:53,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-30 15:43:53,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:55,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:57,673 WARN L539 Checker$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 15:43:59,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:01,389 WARN L539 Checker$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 15:44:03,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:14,959 INFO L130 PetriNetUnfolder]: 48174/73828 cut-off events. [2023-08-30 15:44:14,959 INFO L131 PetriNetUnfolder]: For 505659/506078 co-relation queries the response was YES. [2023-08-30 15:44:15,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346116 conditions, 73828 events. 48174/73828 cut-off events. For 505659/506078 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 570976 event pairs, 18033 based on Foata normal form. 745/66491 useless extension candidates. Maximal degree in co-relation 346053. Up to 40025 conditions per place. [2023-08-30 15:44:16,177 INFO L137 encePairwiseOnDemand]: 463/478 looper letters, 372 selfloop transitions, 189 changer transitions 0/562 dead transitions. [2023-08-30 15:44:16,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 562 transitions, 6543 flow [2023-08-30 15:44:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 15:44:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 15:44:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4031 transitions. [2023-08-30 15:44:16,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31233534790020145 [2023-08-30 15:44:16,182 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4031 transitions. [2023-08-30 15:44:16,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4031 transitions. [2023-08-30 15:44:16,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:44:16,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4031 transitions. [2023-08-30 15:44:16,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 149.2962962962963) internal successors, (4031), 27 states have internal predecessors, (4031), 0 states have call successors, (0), 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 15:44:16,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 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 15:44:16,197 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 478.0) internal successors, (13384), 28 states have internal predecessors, (13384), 0 states have call successors, (0), 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 15:44:16,197 INFO L175 Difference]: Start difference. First operand has 182 places, 303 transitions, 3336 flow. Second operand 27 states and 4031 transitions. [2023-08-30 15:44:16,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 562 transitions, 6543 flow [2023-08-30 15:44:25,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 562 transitions, 6410 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-08-30 15:44:25,395 INFO L231 Difference]: Finished difference. Result has 213 places, 397 transitions, 5013 flow [2023-08-30 15:44:25,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5013, PETRI_PLACES=213, PETRI_TRANSITIONS=397} [2023-08-30 15:44:25,396 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 163 predicate places. [2023-08-30 15:44:25,396 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 397 transitions, 5013 flow [2023-08-30 15:44:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 142.39285714285714) internal successors, (3987), 28 states have internal predecessors, (3987), 0 states have call successors, (0), 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 15:44:25,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:44:25,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:44:25,407 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 15:44:25,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:44:25,605 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:44:25,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:44:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash 635091620, now seen corresponding path program 2 times [2023-08-30 15:44:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:44:25,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784110428] [2023-08-30 15:44:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:44:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:44:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:44:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:44:26,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:44:26,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784110428] [2023-08-30 15:44:26,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784110428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:44:26,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233893686] [2023-08-30 15:44:26,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:44:26,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:44:26,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:44:26,103 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 15:44:26,105 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 15:44:26,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:44:26,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:44:26,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 15:44:26,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:44:26,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:44:26,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:44:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 15:44:26,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:44:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233893686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:44:26,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:44:26,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-08-30 15:44:26,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808190650] [2023-08-30 15:44:26,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:44:26,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 15:44:26,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:44:26,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 15:44:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-08-30 15:44:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 478 [2023-08-30 15:44:26,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 397 transitions, 5013 flow. Second operand has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 15:44:26,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:44:26,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 478 [2023-08-30 15:44:26,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:44:38,838 INFO L130 PetriNetUnfolder]: 51106/79260 cut-off events. [2023-08-30 15:44:38,839 INFO L131 PetriNetUnfolder]: For 650915/651419 co-relation queries the response was YES. [2023-08-30 15:44:39,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405035 conditions, 79260 events. 51106/79260 cut-off events. For 650915/651419 co-relation queries the response was YES. Maximal size of possible extension queue 2664. Compared 631635 event pairs, 17527 based on Foata normal form. 732/71036 useless extension candidates. Maximal degree in co-relation 404962. Up to 69247 conditions per place. [2023-08-30 15:44:40,126 INFO L137 encePairwiseOnDemand]: 471/478 looper letters, 430 selfloop transitions, 77 changer transitions 0/508 dead transitions. [2023-08-30 15:44:40,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 508 transitions, 7276 flow [2023-08-30 15:44:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:44:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:44:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1162 transitions. [2023-08-30 15:44:40,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405160390516039 [2023-08-30 15:44:40,127 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1162 transitions. [2023-08-30 15:44:40,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1162 transitions. [2023-08-30 15:44:40,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:44:40,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1162 transitions. [2023-08-30 15:44:40,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 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 15:44:40,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 15:44:40,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 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 15:44:40,131 INFO L175 Difference]: Start difference. First operand has 213 places, 397 transitions, 5013 flow. Second operand 6 states and 1162 transitions. [2023-08-30 15:44:40,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 508 transitions, 7276 flow [2023-08-30 15:45:01,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 508 transitions, 6987 flow, removed 138 selfloop flow, removed 3 redundant places. [2023-08-30 15:45:01,573 INFO L231 Difference]: Finished difference. Result has 217 places, 419 transitions, 5190 flow [2023-08-30 15:45:01,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4687, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5190, PETRI_PLACES=217, PETRI_TRANSITIONS=419} [2023-08-30 15:45:01,574 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 167 predicate places. [2023-08-30 15:45:01,574 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 419 transitions, 5190 flow [2023-08-30 15:45:01,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 15:45:01,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:45:01,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:45:01,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-30 15:45:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 15:45:01,775 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:45:01,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:45:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2041494415, now seen corresponding path program 2 times [2023-08-30 15:45:01,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:45:01,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050277616] [2023-08-30 15:45:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:45:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:45:02,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:45:02,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050277616] [2023-08-30 15:45:02,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050277616] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:45:02,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907492794] [2023-08-30 15:45:02,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:45:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:45:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:45:02,301 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 15:45:02,305 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 15:45:02,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:45:02,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:45:02,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 15:45:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:45:02,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:45:02,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 15:45:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:45:02,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:45:02,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907492794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:45:02,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:45:02,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-08-30 15:45:02,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407281286] [2023-08-30 15:45:02,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:45:02,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 15:45:02,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:45:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 15:45:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-08-30 15:45:02,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 478 [2023-08-30 15:45:02,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 419 transitions, 5190 flow. Second operand has 8 states, 8 states have (on average 184.625) internal successors, (1477), 8 states have internal predecessors, (1477), 0 states have call successors, (0), 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 15:45:02,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:45:02,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 478 [2023-08-30 15:45:02,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand