./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-commit-2.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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:04:21,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:04:21,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:04:21,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:04:21,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:04:21,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:04:21,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:04:21,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:04:21,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:04:21,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:04:21,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:04:21,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:04:21,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:04:21,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:04:21,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:04:21,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:04:21,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:04:21,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:04:21,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:04:21,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:04:21,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:04:21,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:04:21,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:04:21,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:04:21,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:04:21,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:04:21,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:04:21,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:04:21,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:04:21,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:04:21,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:04:21,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:04:21,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:04:21,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:04:21,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:04:21,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:04:21,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:04:21,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:04:21,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:04:21,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:04:21,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:04:21,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:04:21,648 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:04:21,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:04:21,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:04:21,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:04:21,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:04:21,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:04:21,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:04:21,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:04:21,652 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:04:21,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:04:21,653 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:04:21,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:04:21,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:04:21,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:04:21,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:04:21,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:04:21,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:04:21,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:04:21,654 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:04:21,654 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:04:21,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:04:21,655 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:04:21,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:04:21,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:04:21,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:04:21,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:04:21,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:04:21,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:04:21,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:04:21,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:04:21,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:04:21,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:04:21,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:04:21,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:04:21,657 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:04:21,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:04:21,657 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:04:21,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:04:21,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:04:22,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:04:22,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:04:22,006 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:04:22,007 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:04:22,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-09-01 08:04:23,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:04:23,385 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:04:23,386 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-09-01 08:04:23,392 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bd7192a/9421c575656e47caae47c3ba82effd29/FLAGc8ca783c2 [2023-09-01 08:04:23,410 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bd7192a/9421c575656e47caae47c3ba82effd29 [2023-09-01 08:04:23,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:04:23,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:04:23,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:04:23,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:04:23,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:04:23,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a76186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23, skipping insertion in model container [2023-09-01 08:04:23,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:04:23,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:04:23,686 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-commit-2.wvr.c[5846,5859] [2023-09-01 08:04:23,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:04:23,710 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:04:23,751 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-commit-2.wvr.c[5846,5859] [2023-09-01 08:04:23,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:04:23,776 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:04:23,776 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:04:23,782 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:04:23,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23 WrapperNode [2023-09-01 08:04:23,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:04:23,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:04:23,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:04:23,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:04:23,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,858 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 506 [2023-09-01 08:04:23,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:04:23,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:04:23,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:04:23,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:04:23,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:04:23,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:04:23,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:04:23,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:04:23,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (1/1) ... [2023-09-01 08:04:23,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:04:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:23,965 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) [2023-09-01 08:04:23,985 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 [2023-09-01 08:04:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:04:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:04:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:04:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:04:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:04:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:04:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:04:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:04:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:04:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:04:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:04:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:04:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:04:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:04:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:04:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:04:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:04:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:04:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:04:24,005 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:04:24,115 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:04:24,117 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:04:24,753 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:04:25,149 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:04:25,149 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 08:04:25,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:04:25 BoogieIcfgContainer [2023-09-01 08:04:25,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:04:25,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:04:25,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:04:25,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:04:25,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:04:23" (1/3) ... [2023-09-01 08:04:25,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3e78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:04:25, skipping insertion in model container [2023-09-01 08:04:25,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:04:23" (2/3) ... [2023-09-01 08:04:25,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3e78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:04:25, skipping insertion in model container [2023-09-01 08:04:25,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:04:25" (3/3) ... [2023-09-01 08:04:25,162 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-09-01 08:04:25,170 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:04:25,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:04:25,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:04:25,179 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:04:25,336 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:04:25,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 359 transitions, 750 flow [2023-09-01 08:04:25,548 INFO L130 PetriNetUnfolder]: 25/355 cut-off events. [2023-09-01 08:04:25,548 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:04:25,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 355 events. 25/355 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 333 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 314. Up to 2 conditions per place. [2023-09-01 08:04:25,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 359 transitions, 750 flow [2023-09-01 08:04:25,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 335 transitions, 691 flow [2023-09-01 08:04:25,568 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:04:25,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 335 transitions, 691 flow [2023-09-01 08:04:25,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 335 transitions, 691 flow [2023-09-01 08:04:25,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 335 transitions, 691 flow [2023-09-01 08:04:25,647 INFO L130 PetriNetUnfolder]: 24/335 cut-off events. [2023-09-01 08:04:25,648 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:04:25,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 335 events. 24/335 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 332 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 314. Up to 2 conditions per place. [2023-09-01 08:04:25,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-09-01 08:04:38,376 INFO L134 LiptonReduction]: Checked pairs total: 20033 [2023-09-01 08:04:38,376 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-09-01 08:04:38,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:04:38,423 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;@547fa372, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:04:38,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-09-01 08:04:38,427 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:04:38,427 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:04:38,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:38,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:04:38,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:04:38,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:38,474 INFO L85 PathProgramCache]: Analyzing trace with hash 58818, now seen corresponding path program 1 times [2023-09-01 08:04:38,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:38,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454141221] [2023-09-01 08:04:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:38,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:38,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:38,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454141221] [2023-09-01 08:04:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454141221] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:38,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:38,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:04:38,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943140274] [2023-09-01 08:04:38,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:38,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:38,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:04:38,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 700 [2023-09-01 08:04:38,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:38,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:38,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 700 [2023-09-01 08:04:38,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:43,410 INFO L130 PetriNetUnfolder]: 28951/37701 cut-off events. [2023-09-01 08:04:43,410 INFO L131 PetriNetUnfolder]: For 1324/1324 co-relation queries the response was YES. [2023-09-01 08:04:43,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77334 conditions, 37701 events. 28951/37701 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 188071 event pairs, 23504 based on Foata normal form. 0/18869 useless extension candidates. Maximal degree in co-relation 36140. Up to 18856 conditions per place. [2023-09-01 08:04:43,689 INFO L137 encePairwiseOnDemand]: 672/700 looper letters, 101 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2023-09-01 08:04:43,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 478 flow [2023-09-01 08:04:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:04:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:04:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 996 transitions. [2023-09-01 08:04:43,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742857142857143 [2023-09-01 08:04:43,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 996 transitions. [2023-09-01 08:04:43,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 996 transitions. [2023-09-01 08:04:43,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:43,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 996 transitions. [2023-09-01 08:04:43,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,734 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 163 flow. Second operand 3 states and 996 transitions. [2023-09-01 08:04:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 478 flow [2023-09-01 08:04:43,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 452 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:04:43,804 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 202 flow [2023-09-01 08:04:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2023-09-01 08:04:43,812 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-09-01 08:04:43,813 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 202 flow [2023-09-01 08:04:43,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:43,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:04:43,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:04:43,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:04:43,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1825694, now seen corresponding path program 1 times [2023-09-01 08:04:43,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:43,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735638073] [2023-09-01 08:04:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:43,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:43,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735638073] [2023-09-01 08:04:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735638073] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:43,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:04:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:04:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358413281] [2023-09-01 08:04:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:43,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:04:43,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 700 [2023-09-01 08:04:43,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:43,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:43,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 700 [2023-09-01 08:04:43,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:47,332 INFO L130 PetriNetUnfolder]: 28951/37697 cut-off events. [2023-09-01 08:04:47,333 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-09-01 08:04:47,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76883 conditions, 37697 events. 28951/37697 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 189074 event pairs, 23504 based on Foata normal form. 0/18877 useless extension candidates. Maximal degree in co-relation 38416. Up to 37697 conditions per place. [2023-09-01 08:04:47,522 INFO L137 encePairwiseOnDemand]: 695/700 looper letters, 61 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-09-01 08:04:47,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 310 flow [2023-09-01 08:04:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:04:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:04:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2023-09-01 08:04:47,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43523809523809526 [2023-09-01 08:04:47,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2023-09-01 08:04:47,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2023-09-01 08:04:47,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:47,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2023-09-01 08:04:47,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:47,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:47,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:47,535 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 202 flow. Second operand 3 states and 914 transitions. [2023-09-01 08:04:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 310 flow [2023-09-01 08:04:47,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:04:47,538 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 172 flow [2023-09-01 08:04:47,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-09-01 08:04:47,539 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-09-01 08:04:47,539 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 172 flow [2023-09-01 08:04:47,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:47,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:47,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:04:47,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:04:47,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:04:47,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:47,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1825714, now seen corresponding path program 1 times [2023-09-01 08:04:47,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:47,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228471192] [2023-09-01 08:04:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:47,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:47,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:47,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228471192] [2023-09-01 08:04:47,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228471192] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:47,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244967702] [2023-09-01 08:04:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:47,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:47,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:47,619 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) [2023-09-01 08:04:47,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:04:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:47,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:04:47,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:47,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:04:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:47,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244967702] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:04:47,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:04:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:04:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157096469] [2023-09-01 08:04:47,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:04:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:04:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:04:47,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:04:48,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 700 [2023-09-01 08:04:48,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:48,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:48,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 700 [2023-09-01 08:04:48,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:04:56,327 INFO L130 PetriNetUnfolder]: 72376/94235 cut-off events. [2023-09-01 08:04:56,328 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2023-09-01 08:04:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192160 conditions, 94235 events. 72376/94235 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 2962. Compared 518531 event pairs, 58760 based on Foata normal form. 0/47176 useless extension candidates. Maximal degree in co-relation 192152. Up to 18855 conditions per place. [2023-09-01 08:04:56,824 INFO L137 encePairwiseOnDemand]: 688/700 looper letters, 226 selfloop transitions, 29 changer transitions 0/255 dead transitions. [2023-09-01 08:04:56,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 255 transitions, 1142 flow [2023-09-01 08:04:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:04:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:04:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1977 transitions. [2023-09-01 08:04:56,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707142857142857 [2023-09-01 08:04:56,830 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1977 transitions. [2023-09-01 08:04:56,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1977 transitions. [2023-09-01 08:04:56,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:04:56,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1977 transitions. [2023-09-01 08:04:56,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:56,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:56,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:56,848 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 172 flow. Second operand 6 states and 1977 transitions. [2023-09-01 08:04:56,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 255 transitions, 1142 flow [2023-09-01 08:04:56,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 255 transitions, 1141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:04:56,855 INFO L231 Difference]: Finished difference. Result has 64 places, 83 transitions, 378 flow [2023-09-01 08:04:56,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=64, PETRI_TRANSITIONS=83} [2023-09-01 08:04:56,857 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2023-09-01 08:04:56,857 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 378 flow [2023-09-01 08:04:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:56,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:04:56,859 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:04:56,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:04:57,065 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 [2023-09-01 08:04:57,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:04:57,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:04:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1443005226, now seen corresponding path program 2 times [2023-09-01 08:04:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:04:57,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305750962] [2023-09-01 08:04:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:04:57,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:04:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:04:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:04:57,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:04:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305750962] [2023-09-01 08:04:57,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305750962] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:04:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094849588] [2023-09-01 08:04:57,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:04:57,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:04:57,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:04:57,235 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) [2023-09-01 08:04:57,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:04:57,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:04:57,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:04:57,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:04:57,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:04:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:04:57,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:04:57,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094849588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:04:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:04:57,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:04:57,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757118726] [2023-09-01 08:04:57,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:04:57,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:04:57,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:04:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:04:57,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:04:57,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 700 [2023-09-01 08:04:57,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 83 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:04:57,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:04:57,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 700 [2023-09-01 08:04:57,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:05,471 INFO L130 PetriNetUnfolder]: 72376/94231 cut-off events. [2023-09-01 08:05:05,471 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2023-09-01 08:05:05,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192205 conditions, 94231 events. 72376/94231 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 524498 event pairs, 58760 based on Foata normal form. 4/47189 useless extension candidates. Maximal degree in co-relation 192193. Up to 94231 conditions per place. [2023-09-01 08:05:05,978 INFO L137 encePairwiseOnDemand]: 695/700 looper letters, 78 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-09-01 08:05:05,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 496 flow [2023-09-01 08:05:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 922 transitions. [2023-09-01 08:05:05,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439047619047619 [2023-09-01 08:05:05,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 922 transitions. [2023-09-01 08:05:05,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 922 transitions. [2023-09-01 08:05:05,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:05,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 922 transitions. [2023-09-01 08:05:05,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.3333333333333) internal successors, (922), 3 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:05,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:05,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:05,992 INFO L175 Difference]: Start difference. First operand has 64 places, 83 transitions, 378 flow. Second operand 3 states and 922 transitions. [2023-09-01 08:05:05,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 496 flow [2023-09-01 08:05:05,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 397 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-09-01 08:05:05,995 INFO L231 Difference]: Finished difference. Result has 57 places, 79 transitions, 241 flow [2023-09-01 08:05:05,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=57, PETRI_TRANSITIONS=79} [2023-09-01 08:05:05,996 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2023-09-01 08:05:05,996 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 79 transitions, 241 flow [2023-09-01 08:05:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:05,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:05,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:06,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:05:06,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 08:05:06,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:06,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash -514213803, now seen corresponding path program 1 times [2023-09-01 08:05:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:06,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336787524] [2023-09-01 08:05:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:06,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:06,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336787524] [2023-09-01 08:05:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336787524] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:06,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:06,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:05:06,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507530499] [2023-09-01 08:05:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:06,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:06,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 700 [2023-09-01 08:05:06,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 79 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:06,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:06,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 700 [2023-09-01 08:05:06,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:14,674 INFO L130 PetriNetUnfolder]: 80736/105511 cut-off events. [2023-09-01 08:05:14,674 INFO L131 PetriNetUnfolder]: For 935/935 co-relation queries the response was YES. [2023-09-01 08:05:14,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215204 conditions, 105511 events. 80736/105511 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 3453. Compared 618073 event pairs, 18085 based on Foata normal form. 0/53456 useless extension candidates. Maximal degree in co-relation 215195. Up to 95886 conditions per place. [2023-09-01 08:05:15,303 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 100 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2023-09-01 08:05:15,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 505 flow [2023-09-01 08:05:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-09-01 08:05:15,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45285714285714285 [2023-09-01 08:05:15,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-09-01 08:05:15,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-09-01 08:05:15,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:15,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-09-01 08:05:15,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:15,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:15,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:15,314 INFO L175 Difference]: Start difference. First operand has 57 places, 79 transitions, 241 flow. Second operand 3 states and 951 transitions. [2023-09-01 08:05:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 505 flow [2023-09-01 08:05:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:15,317 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 268 flow [2023-09-01 08:05:15,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2023-09-01 08:05:15,318 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2023-09-01 08:05:15,318 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 268 flow [2023-09-01 08:05:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:15,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:15,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:15,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:05:15,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:15,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:15,320 INFO L85 PathProgramCache]: Analyzing trace with hash -238139130, now seen corresponding path program 1 times [2023-09-01 08:05:15,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:15,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319382896] [2023-09-01 08:05:15,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:15,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319382896] [2023-09-01 08:05:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319382896] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:15,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:15,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548534674] [2023-09-01 08:05:15,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:15,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 700 [2023-09-01 08:05:15,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:15,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:15,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 700 [2023-09-01 08:05:15,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:24,374 INFO L130 PetriNetUnfolder]: 84526/110741 cut-off events. [2023-09-01 08:05:24,374 INFO L131 PetriNetUnfolder]: For 11880/11880 co-relation queries the response was YES. [2023-09-01 08:05:24,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244251 conditions, 110741 events. 84526/110741 cut-off events. For 11880/11880 co-relation queries the response was YES. Maximal size of possible extension queue 3079. Compared 628334 event pairs, 22465 based on Foata normal form. 0/73026 useless extension candidates. Maximal degree in co-relation 244240. Up to 92576 conditions per place. [2023-09-01 08:05:24,925 INFO L137 encePairwiseOnDemand]: 696/700 looper letters, 104 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-09-01 08:05:24,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 538 flow [2023-09-01 08:05:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-09-01 08:05:24,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45571428571428574 [2023-09-01 08:05:24,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-09-01 08:05:24,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-09-01 08:05:24,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:24,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-09-01 08:05:24,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:24,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:24,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:24,935 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 268 flow. Second operand 3 states and 957 transitions. [2023-09-01 08:05:24,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 538 flow [2023-09-01 08:05:24,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:24,959 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 274 flow [2023-09-01 08:05:24,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2023-09-01 08:05:24,963 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-09-01 08:05:24,964 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 274 flow [2023-09-01 08:05:24,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:24,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:24,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:24,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:05:24,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:24,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1218340356, now seen corresponding path program 1 times [2023-09-01 08:05:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:24,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347513190] [2023-09-01 08:05:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:24,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:25,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:25,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347513190] [2023-09-01 08:05:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347513190] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183079285] [2023-09-01 08:05:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:25,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:25,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:25,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 700 [2023-09-01 08:05:25,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:25,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:25,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 700 [2023-09-01 08:05:25,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:32,380 INFO L130 PetriNetUnfolder]: 68306/89071 cut-off events. [2023-09-01 08:05:32,381 INFO L131 PetriNetUnfolder]: For 12490/12490 co-relation queries the response was YES. [2023-09-01 08:05:32,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201683 conditions, 89071 events. 68306/89071 cut-off events. For 12490/12490 co-relation queries the response was YES. Maximal size of possible extension queue 2709. Compared 488034 event pairs, 15845 based on Foata normal form. 0/63096 useless extension candidates. Maximal degree in co-relation 201670. Up to 79476 conditions per place. [2023-09-01 08:05:33,024 INFO L137 encePairwiseOnDemand]: 696/700 looper letters, 103 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-09-01 08:05:33,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 543 flow [2023-09-01 08:05:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 957 transitions. [2023-09-01 08:05:33,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45571428571428574 [2023-09-01 08:05:33,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 957 transitions. [2023-09-01 08:05:33,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 957 transitions. [2023-09-01 08:05:33,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:33,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 957 transitions. [2023-09-01 08:05:33,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:33,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:33,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:33,033 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 274 flow. Second operand 3 states and 957 transitions. [2023-09-01 08:05:33,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 543 flow [2023-09-01 08:05:33,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:33,037 INFO L231 Difference]: Finished difference. Result has 63 places, 82 transitions, 282 flow [2023-09-01 08:05:33,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=63, PETRI_TRANSITIONS=82} [2023-09-01 08:05:33,037 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-09-01 08:05:33,038 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 82 transitions, 282 flow [2023-09-01 08:05:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:33,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:33,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:33,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:05:33,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:33,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:33,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1701068514, now seen corresponding path program 1 times [2023-09-01 08:05:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:33,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631007755] [2023-09-01 08:05:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:33,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631007755] [2023-09-01 08:05:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631007755] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:33,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:33,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641161905] [2023-09-01 08:05:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:33,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:05:33,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:05:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:05:33,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-09-01 08:05:33,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 82 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:33,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:33,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-09-01 08:05:33,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:40,984 INFO L130 PetriNetUnfolder]: 68901/90126 cut-off events. [2023-09-01 08:05:40,984 INFO L131 PetriNetUnfolder]: For 16800/16800 co-relation queries the response was YES. [2023-09-01 08:05:41,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213085 conditions, 90126 events. 68901/90126 cut-off events. For 16800/16800 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 510788 event pairs, 56345 based on Foata normal form. 150/69591 useless extension candidates. Maximal degree in co-relation 213070. Up to 89070 conditions per place. [2023-09-01 08:05:41,459 INFO L137 encePairwiseOnDemand]: 695/700 looper letters, 79 selfloop transitions, 2 changer transitions 45/126 dead transitions. [2023-09-01 08:05:41,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 126 transitions, 680 flow [2023-09-01 08:05:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:05:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:05:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1195 transitions. [2023-09-01 08:05:41,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42678571428571427 [2023-09-01 08:05:41,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1195 transitions. [2023-09-01 08:05:41,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1195 transitions. [2023-09-01 08:05:41,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:41,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1195 transitions. [2023-09-01 08:05:41,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.75) internal successors, (1195), 4 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:41,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:41,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:41,470 INFO L175 Difference]: Start difference. First operand has 63 places, 82 transitions, 282 flow. Second operand 4 states and 1195 transitions. [2023-09-01 08:05:41,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 126 transitions, 680 flow [2023-09-01 08:05:41,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 126 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:41,478 INFO L231 Difference]: Finished difference. Result has 66 places, 81 transitions, 284 flow [2023-09-01 08:05:41,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=66, PETRI_TRANSITIONS=81} [2023-09-01 08:05:41,479 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-09-01 08:05:41,479 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 81 transitions, 284 flow [2023-09-01 08:05:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:41,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:41,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:41,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:05:41,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:41,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash -789035130, now seen corresponding path program 1 times [2023-09-01 08:05:41,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:41,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825534172] [2023-09-01 08:05:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:05:41,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:41,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825534172] [2023-09-01 08:05:41,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825534172] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:41,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697402574] [2023-09-01 08:05:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:41,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:41,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:41,637 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) [2023-09-01 08:05:41,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:05:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:41,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:41,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:41,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:41,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697402574] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:41,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:41,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:05:41,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299929154] [2023-09-01 08:05:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:41,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:41,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:05:41,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-09-01 08:05:41,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 81 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:41,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:41,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-09-01 08:05:41,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:45,277 INFO L130 PetriNetUnfolder]: 29430/38695 cut-off events. [2023-09-01 08:05:45,277 INFO L131 PetriNetUnfolder]: For 11360/11360 co-relation queries the response was YES. [2023-09-01 08:05:45,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93775 conditions, 38695 events. 29430/38695 cut-off events. For 11360/11360 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 198539 event pairs, 22855 based on Foata normal form. 6070/38191 useless extension candidates. Maximal degree in co-relation 93758. Up to 38695 conditions per place. [2023-09-01 08:05:45,472 INFO L137 encePairwiseOnDemand]: 693/700 looper letters, 74 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-09-01 08:05:45,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 418 flow [2023-09-01 08:05:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 936 transitions. [2023-09-01 08:05:45,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2023-09-01 08:05:45,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 936 transitions. [2023-09-01 08:05:45,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 936 transitions. [2023-09-01 08:05:45,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:45,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 936 transitions. [2023-09-01 08:05:45,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,481 INFO L175 Difference]: Start difference. First operand has 66 places, 81 transitions, 284 flow. Second operand 3 states and 936 transitions. [2023-09-01 08:05:45,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 418 flow [2023-09-01 08:05:45,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 08:05:45,484 INFO L231 Difference]: Finished difference. Result has 59 places, 75 transitions, 264 flow [2023-09-01 08:05:45,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=59, PETRI_TRANSITIONS=75} [2023-09-01 08:05:45,485 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -17 predicate places. [2023-09-01 08:05:45,486 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 75 transitions, 264 flow [2023-09-01 08:05:45,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:45,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:45,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:45,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:45,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:45,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1309716233, now seen corresponding path program 1 times [2023-09-01 08:05:45,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:45,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60370409] [2023-09-01 08:05:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:45,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60370409] [2023-09-01 08:05:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60370409] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:05:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705592671] [2023-09-01 08:05:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:45,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:45,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:05:45,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 700 [2023-09-01 08:05:45,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:45,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:45,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 700 [2023-09-01 08:05:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:48,992 INFO L130 PetriNetUnfolder]: 27640/36375 cut-off events. [2023-09-01 08:05:48,992 INFO L131 PetriNetUnfolder]: For 9540/9540 co-relation queries the response was YES. [2023-09-01 08:05:49,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88713 conditions, 36375 events. 27640/36375 cut-off events. For 9540/9540 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 179958 event pairs, 7375 based on Foata normal form. 1030/30861 useless extension candidates. Maximal degree in co-relation 88696. Up to 32081 conditions per place. [2023-09-01 08:05:49,215 INFO L137 encePairwiseOnDemand]: 696/700 looper letters, 89 selfloop transitions, 2 changer transitions 8/99 dead transitions. [2023-09-01 08:05:49,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 527 flow [2023-09-01 08:05:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2023-09-01 08:05:49,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45095238095238094 [2023-09-01 08:05:49,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2023-09-01 08:05:49,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2023-09-01 08:05:49,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:49,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2023-09-01 08:05:49,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,224 INFO L175 Difference]: Start difference. First operand has 59 places, 75 transitions, 264 flow. Second operand 3 states and 947 transitions. [2023-09-01 08:05:49,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 527 flow [2023-09-01 08:05:49,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 99 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:49,227 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 277 flow [2023-09-01 08:05:49,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2023-09-01 08:05:49,228 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-09-01 08:05:49,228 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 277 flow [2023-09-01 08:05:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:49,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:05:49,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:49,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1946506401, now seen corresponding path program 1 times [2023-09-01 08:05:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010356008] [2023-09-01 08:05:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010356008] [2023-09-01 08:05:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010356008] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:49,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:05:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649178342] [2023-09-01 08:05:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:05:49,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:05:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:05:49,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-09-01 08:05:49,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:49,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:49,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-09-01 08:05:49,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:53,060 INFO L130 PetriNetUnfolder]: 28565/37940 cut-off events. [2023-09-01 08:05:53,060 INFO L131 PetriNetUnfolder]: For 11515/11515 co-relation queries the response was YES. [2023-09-01 08:05:53,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96735 conditions, 37940 events. 28565/37940 cut-off events. For 11515/11515 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 196888 event pairs, 22180 based on Foata normal form. 80/32276 useless extension candidates. Maximal degree in co-relation 96716. Up to 36355 conditions per place. [2023-09-01 08:05:53,266 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 68 selfloop transitions, 7 changer transitions 27/102 dead transitions. [2023-09-01 08:05:53,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 555 flow [2023-09-01 08:05:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:05:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:05:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2023-09-01 08:05:53,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42392857142857143 [2023-09-01 08:05:53,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2023-09-01 08:05:53,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2023-09-01 08:05:53,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:53,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2023-09-01 08:05:53,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,274 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 277 flow. Second operand 4 states and 1187 transitions. [2023-09-01 08:05:53,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 555 flow [2023-09-01 08:05:53,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:53,278 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 295 flow [2023-09-01 08:05:53,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-09-01 08:05:53,279 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -12 predicate places. [2023-09-01 08:05:53,279 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 295 flow [2023-09-01 08:05:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:53,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:53,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:05:53,280 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:53,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:53,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1289467166, now seen corresponding path program 1 times [2023-09-01 08:05:53,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:53,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891907499] [2023-09-01 08:05:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:53,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:05:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:53,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891907499] [2023-09-01 08:05:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891907499] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140934905] [2023-09-01 08:05:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:53,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:53,425 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) [2023-09-01 08:05:53,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:05:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:53,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:53,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:53,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140934905] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:53,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:53,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-09-01 08:05:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507763664] [2023-09-01 08:05:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:53,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:53,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:53,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:05:53,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-09-01 08:05:53,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:53,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:53,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-09-01 08:05:53,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:55,900 INFO L130 PetriNetUnfolder]: 19339/25594 cut-off events. [2023-09-01 08:05:55,900 INFO L131 PetriNetUnfolder]: For 9245/9245 co-relation queries the response was YES. [2023-09-01 08:05:55,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65165 conditions, 25594 events. 19339/25594 cut-off events. For 9245/9245 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 125068 event pairs, 14435 based on Foata normal form. 520/23496 useless extension candidates. Maximal degree in co-relation 65144. Up to 25594 conditions per place. [2023-09-01 08:05:56,054 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 72 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-09-01 08:05:56,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 433 flow [2023-09-01 08:05:56,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:05:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:05:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 930 transitions. [2023-09-01 08:05:56,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2023-09-01 08:05:56,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 930 transitions. [2023-09-01 08:05:56,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 930 transitions. [2023-09-01 08:05:56,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:56,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 930 transitions. [2023-09-01 08:05:56,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.0) internal successors, (930), 3 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,060 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 295 flow. Second operand 3 states and 930 transitions. [2023-09-01 08:05:56,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 433 flow [2023-09-01 08:05:56,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 415 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 08:05:56,069 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 271 flow [2023-09-01 08:05:56,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2023-09-01 08:05:56,071 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-09-01 08:05:56,071 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 271 flow [2023-09-01 08:05:56,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:56,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:56,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:05:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:56,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:56,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1318775046, now seen corresponding path program 1 times [2023-09-01 08:05:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641038751] [2023-09-01 08:05:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:56,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641038751] [2023-09-01 08:05:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641038751] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:56,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:05:56,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:05:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553750302] [2023-09-01 08:05:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:56,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:05:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:05:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:05:56,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-09-01 08:05:56,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:56,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:56,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-09-01 08:05:56,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:05:58,417 INFO L130 PetriNetUnfolder]: 15679/20826 cut-off events. [2023-09-01 08:05:58,417 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 08:05:58,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52883 conditions, 20826 events. 15679/20826 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 99197 event pairs, 11749 based on Foata normal form. 24/18749 useless extension candidates. Maximal degree in co-relation 52863. Up to 20454 conditions per place. [2023-09-01 08:05:58,526 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 67 selfloop transitions, 6 changer transitions 24/97 dead transitions. [2023-09-01 08:05:58,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 97 transitions, 531 flow [2023-09-01 08:05:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:05:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:05:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1465 transitions. [2023-09-01 08:05:58,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185714285714286 [2023-09-01 08:05:58,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1465 transitions. [2023-09-01 08:05:58,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1465 transitions. [2023-09-01 08:05:58,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:05:58,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1465 transitions. [2023-09-01 08:05:58,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:58,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 700.0) internal successors, (4200), 6 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:58,535 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 700.0) internal successors, (4200), 6 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:58,535 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 271 flow. Second operand 5 states and 1465 transitions. [2023-09-01 08:05:58,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 97 transitions, 531 flow [2023-09-01 08:05:58,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:05:58,538 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 293 flow [2023-09-01 08:05:58,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-09-01 08:05:58,538 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-09-01 08:05:58,539 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 293 flow [2023-09-01 08:05:58,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:58,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:05:58,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:05:58,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:05:58,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:05:58,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:05:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1829678869, now seen corresponding path program 1 times [2023-09-01 08:05:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:05:58,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710579407] [2023-09-01 08:05:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:58,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:05:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:05:58,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:05:58,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710579407] [2023-09-01 08:05:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710579407] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:05:58,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848349285] [2023-09-01 08:05:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:05:58,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:05:58,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:05:58,687 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) [2023-09-01 08:05:58,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:05:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:05:58,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:05:58,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:05:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:05:58,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:05:58,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848349285] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:05:58,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:05:58,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-09-01 08:05:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355103492] [2023-09-01 08:05:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:05:58,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:05:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:05:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:05:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:05:58,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-09-01 08:05:58,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:05:58,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:05:58,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-09-01 08:05:58,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:06:00,086 INFO L130 PetriNetUnfolder]: 10754/14338 cut-off events. [2023-09-01 08:06:00,087 INFO L131 PetriNetUnfolder]: For 5386/5386 co-relation queries the response was YES. [2023-09-01 08:06:00,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36315 conditions, 14338 events. 10754/14338 cut-off events. For 5386/5386 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 64581 event pairs, 7804 based on Foata normal form. 336/13985 useless extension candidates. Maximal degree in co-relation 36292. Up to 14338 conditions per place. [2023-09-01 08:06:00,181 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-09-01 08:06:00,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 427 flow [2023-09-01 08:06:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:06:00,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:06:00,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2023-09-01 08:06:00,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2023-09-01 08:06:00,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2023-09-01 08:06:00,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2023-09-01 08:06:00,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:06:00,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2023-09-01 08:06:00,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:00,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:00,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:00,188 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 293 flow. Second operand 3 states and 928 transitions. [2023-09-01 08:06:00,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 427 flow [2023-09-01 08:06:00,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 416 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 08:06:00,192 INFO L231 Difference]: Finished difference. Result has 62 places, 71 transitions, 276 flow [2023-09-01 08:06:00,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=62, PETRI_TRANSITIONS=71} [2023-09-01 08:06:00,193 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2023-09-01 08:06:00,194 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 71 transitions, 276 flow [2023-09-01 08:06:00,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:00,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:06:00,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:06:00,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:06:00,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:06:00,395 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:06:00,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:06:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 534661869, now seen corresponding path program 1 times [2023-09-01 08:06:00,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:06:00,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679344072] [2023-09-01 08:06:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:06:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:06:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:06:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679344072] [2023-09-01 08:06:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679344072] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:06:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:06:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:06:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869033796] [2023-09-01 08:06:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:06:00,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:06:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:06:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:06:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:06:00,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 700 [2023-09-01 08:06:00,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 71 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:00,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:06:00,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 700 [2023-09-01 08:06:00,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:06:02,040 INFO L130 PetriNetUnfolder]: 12094/16460 cut-off events. [2023-09-01 08:06:02,041 INFO L131 PetriNetUnfolder]: For 5646/5646 co-relation queries the response was YES. [2023-09-01 08:06:02,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 16460 events. 12094/16460 cut-off events. For 5646/5646 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 77781 event pairs, 8980 based on Foata normal form. 144/15915 useless extension candidates. Maximal degree in co-relation 41151. Up to 14328 conditions per place. [2023-09-01 08:06:02,140 INFO L137 encePairwiseOnDemand]: 694/700 looper letters, 64 selfloop transitions, 6 changer transitions 44/114 dead transitions. [2023-09-01 08:06:02,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 114 transitions, 651 flow [2023-09-01 08:06:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:06:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:06:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1193 transitions. [2023-09-01 08:06:02,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42607142857142855 [2023-09-01 08:06:02,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1193 transitions. [2023-09-01 08:06:02,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1193 transitions. [2023-09-01 08:06:02,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:06:02,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1193 transitions. [2023-09-01 08:06:02,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:02,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:02,148 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 700.0) internal successors, (3500), 5 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:02,149 INFO L175 Difference]: Start difference. First operand has 62 places, 71 transitions, 276 flow. Second operand 4 states and 1193 transitions. [2023-09-01 08:06:02,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 114 transitions, 651 flow [2023-09-01 08:06:02,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:06:02,153 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 291 flow [2023-09-01 08:06:02,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-09-01 08:06:02,153 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -11 predicate places. [2023-09-01 08:06:02,153 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 291 flow [2023-09-01 08:06:02,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.5) internal successors, (1138), 4 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:02,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:06:02,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:06:02,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:06:02,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:06:02,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:06:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1046507037, now seen corresponding path program 1 times [2023-09-01 08:06:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:06:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773667807] [2023-09-01 08:06:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:06:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:06:02,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:06:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773667807] [2023-09-01 08:06:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773667807] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:06:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378535736] [2023-09-01 08:06:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:06:02,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:06:02,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:06:02,325 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) [2023-09-01 08:06:02,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:06:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:06:02,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:06:02,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:06:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:06:02,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:06:02,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378535736] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:06:02,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:06:02,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-09-01 08:06:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203878886] [2023-09-01 08:06:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:06:02,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:06:02,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:06:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:06:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:06:02,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 700 [2023-09-01 08:06:02,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:02,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:06:02,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 700 [2023-09-01 08:06:02,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:06:03,411 INFO L130 PetriNetUnfolder]: 7529/10145 cut-off events. [2023-09-01 08:06:03,411 INFO L131 PetriNetUnfolder]: For 3810/3810 co-relation queries the response was YES. [2023-09-01 08:06:03,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25583 conditions, 10145 events. 7529/10145 cut-off events. For 3810/3810 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 44068 event pairs, 5356 based on Foata normal form. 288/10429 useless extension candidates. Maximal degree in co-relation 25559. Up to 10145 conditions per place. [2023-09-01 08:06:03,441 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2023-09-01 08:06:03,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 419 flow [2023-09-01 08:06:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:06:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:06:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 926 transitions. [2023-09-01 08:06:03,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44095238095238093 [2023-09-01 08:06:03,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 926 transitions. [2023-09-01 08:06:03,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 926 transitions. [2023-09-01 08:06:03,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:06:03,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 926 transitions. [2023-09-01 08:06:03,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:03,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:03,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:03,447 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 291 flow. Second operand 3 states and 926 transitions. [2023-09-01 08:06:03,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 419 flow [2023-09-01 08:06:03,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 386 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 08:06:03,454 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-09-01 08:06:03,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-09-01 08:06:03,454 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -15 predicate places. [2023-09-01 08:06:03,454 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-09-01 08:06:03,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:06:03,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2023-09-01 08:06:03,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2023-09-01 08:06:03,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2023-09-01 08:06:03,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2023-09-01 08:06:03,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2023-09-01 08:06:03,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2023-09-01 08:06:03,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2023-09-01 08:06:03,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2023-09-01 08:06:03,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2023-09-01 08:06:03,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2023-09-01 08:06:03,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2023-09-01 08:06:03,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2023-09-01 08:06:03,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2023-09-01 08:06:03,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2023-09-01 08:06:03,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2023-09-01 08:06:03,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2023-09-01 08:06:03,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2023-09-01 08:06:03,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2023-09-01 08:06:03,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2023-09-01 08:06:03,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2023-09-01 08:06:03,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2023-09-01 08:06:03,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2023-09-01 08:06:03,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2023-09-01 08:06:03,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2023-09-01 08:06:03,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2023-09-01 08:06:03,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2023-09-01 08:06:03,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2023-09-01 08:06:03,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2023-09-01 08:06:03,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2023-09-01 08:06:03,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2023-09-01 08:06:03,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2023-09-01 08:06:03,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2023-09-01 08:06:03,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2023-09-01 08:06:03,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2023-09-01 08:06:03,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2023-09-01 08:06:03,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2023-09-01 08:06:03,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2023-09-01 08:06:03,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2023-09-01 08:06:03,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2023-09-01 08:06:03,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2023-09-01 08:06:03,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2023-09-01 08:06:03,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2023-09-01 08:06:03,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:06:03,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:06:03,673 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:06:03,678 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:06:03,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:06:03,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:06:03 BasicIcfg [2023-09-01 08:06:03,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:06:03,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:06:03,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:06:03,683 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:06:03,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:04:25" (3/4) ... [2023-09-01 08:06:03,685 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:06:03,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:06:03,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:06:03,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:06:03,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-09-01 08:06:03,703 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2023-09-01 08:06:03,704 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:06:03,704 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:06:03,705 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:06:03,761 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:06:03,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:06:03,762 INFO L158 Benchmark]: Toolchain (without parser) took 100349.06ms. Allocated memory was 69.2MB in the beginning and 15.9GB in the end (delta: 15.8GB). Free memory was 40.8MB in the beginning and 10.7GB in the end (delta: -10.6GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. [2023-09-01 08:06:03,762 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:06:03,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.84ms. Allocated memory is still 69.2MB. Free memory was 40.7MB in the beginning and 43.0MB in the end (delta: -2.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-09-01 08:06:03,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.99ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 39.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:06:03,763 INFO L158 Benchmark]: Boogie Preprocessor took 67.13ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 36.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:06:03,764 INFO L158 Benchmark]: RCFGBuilder took 1223.40ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 36.7MB in the beginning and 34.4MB in the end (delta: 2.3MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-09-01 08:06:03,764 INFO L158 Benchmark]: TraceAbstraction took 98526.67ms. Allocated memory was 86.0MB in the beginning and 15.9GB in the end (delta: 15.8GB). Free memory was 34.0MB in the beginning and 10.7GB in the end (delta: -10.6GB). Peak memory consumption was 5.1GB. Max. memory is 16.1GB. [2023-09-01 08:06:03,764 INFO L158 Benchmark]: Witness Printer took 79.32ms. Allocated memory is still 15.9GB. Free memory was 10.7GB in the beginning and 10.7GB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-09-01 08:06:03,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.84ms. Allocated memory is still 69.2MB. Free memory was 40.7MB in the beginning and 43.0MB in the end (delta: -2.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.99ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 39.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.13ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 36.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1223.40ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 36.7MB in the beginning and 34.4MB in the end (delta: 2.3MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 98526.67ms. Allocated memory was 86.0MB in the beginning and 15.9GB in the end (delta: 15.8GB). Free memory was 34.0MB in the beginning and 10.7GB in the end (delta: -10.6GB). Peak memory consumption was 5.1GB. Max. memory is 16.1GB. * Witness Printer took 79.32ms. Allocated memory is still 15.9GB. Free memory was 10.7GB in the beginning and 10.7GB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.8s, 324 PlacesBefore, 76 PlacesAfterwards, 335 TransitionsBefore, 71 TransitionsAfterwards, 5712 CoEnabledTransitionPairs, 7 FixpointIterations, 221 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 37 TrivialYvCompositions, 15 ConcurrentYvCompositions, 16 ChoiceCompositions, 341 TotalNumberOfCompositions, 20033 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8813, independent: 8432, independent conditional: 0, independent unconditional: 8432, dependent: 381, dependent conditional: 0, dependent unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2877, independent: 2819, independent conditional: 0, independent unconditional: 2819, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8813, independent: 5613, independent conditional: 0, independent unconditional: 5613, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 2877, unknown conditional: 0, unknown unconditional: 2877] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 403 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 98.3s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 80.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1666 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1109 mSDsluCounter, 354 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2292 IncrementalHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 206 mSDtfsCounter, 2292 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 280 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1882 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 34/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:06:03,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE