./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.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-more-buffer-series2.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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --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 08:17:42,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:17:42,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:17:42,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:17:42,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:17:42,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:17:42,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:17:42,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:17:42,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:17:42,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:17:42,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:17:42,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:17:42,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:17:42,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:17:42,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:17:42,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:17:42,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:17:42,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:17:42,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:17:42,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:17:42,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:17:42,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:17:42,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:17:42,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:17:42,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:17:42,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:17:42,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:17:42,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:17:42,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:17:42,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:17:42,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:17:42,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:17:42,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:17:42,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:17:42,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:17:42,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:17:42,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:17:42,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:17:42,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:17:42,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:17:42,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:17:42,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:17:42,663 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:17:42,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:17:42,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:17:42,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:17:42,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:17:42,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:17:42,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:17:42,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:17:42,668 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:17:42,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:17:42,669 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:17:42,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:17:42,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:17:42,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:17:42,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:17:42,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:17:42,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:17:42,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:17:42,670 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:17:42,670 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:17:42,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:17:42,671 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:17:42,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:17:42,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:17:42,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:17:42,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:17:42,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:17:42,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:17:42,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:17:42,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:17:42,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:17:42,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:17:42,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:17:42,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:17:42,673 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:17:42,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:17:42,673 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:17:42,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:17:43,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:17:43,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:17:43,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:17:43,042 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:17:43,042 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:17:43,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-09-01 08:17:44,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:17:44,453 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:17:44,454 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-09-01 08:17:44,460 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa71b6d4/084e2fb3b4bf489cb79e6f68147509d5/FLAG9825d4c55 [2023-09-01 08:17:44,478 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfa71b6d4/084e2fb3b4bf489cb79e6f68147509d5 [2023-09-01 08:17:44,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:17:44,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:17:44,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:17:44,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:17:44,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:17:44,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e673825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44, skipping insertion in model container [2023-09-01 08:17:44,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:17:44,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:17:44,659 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-09-01 08:17:44,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:17:44,674 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:17:44,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-09-01 08:17:44,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:17:44,710 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:17:44,710 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:17:44,715 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:17:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44 WrapperNode [2023-09-01 08:17:44,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:17:44,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:17:44,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:17:44,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:17:44,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,767 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 402 [2023-09-01 08:17:44,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:17:44,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:17:44,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:17:44,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:17:44,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,808 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:17:44,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:17:44,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:17:44,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:17:44,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (1/1) ... [2023-09-01 08:17:44,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:17:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:44,850 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 08:17:44,881 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 08:17:44,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:17:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:17:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:17:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:17:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:17:44,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:17:44,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:17:44,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:17:44,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:17:44,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:17:44,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:17:44,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:17:44,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:17:44,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:17:44,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:17:44,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:17:44,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:17:44,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:17:44,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:17:44,895 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 08:17:45,012 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:17:45,026 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:17:45,708 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:17:46,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:17:46,239 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 08:17:46,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:17:46 BoogieIcfgContainer [2023-09-01 08:17:46,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:17:46,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:17:46,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:17:46,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:17:46,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:17:44" (1/3) ... [2023-09-01 08:17:46,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334695e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:17:46, skipping insertion in model container [2023-09-01 08:17:46,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:44" (2/3) ... [2023-09-01 08:17:46,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334695e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:17:46, skipping insertion in model container [2023-09-01 08:17:46,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:17:46" (3/3) ... [2023-09-01 08:17:46,249 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-09-01 08:17:46,257 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:17:46,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:17:46,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:17:46,267 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:17:46,443 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:17:46,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 287 transitions, 606 flow [2023-09-01 08:17:46,569 INFO L130 PetriNetUnfolder]: 22/283 cut-off events. [2023-09-01 08:17:46,570 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:17:46,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 283 events. 22/283 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2023-09-01 08:17:46,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 287 transitions, 606 flow [2023-09-01 08:17:46,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 263 transitions, 547 flow [2023-09-01 08:17:46,586 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:17:46,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 263 transitions, 547 flow [2023-09-01 08:17:46,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 263 transitions, 547 flow [2023-09-01 08:17:46,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 263 transitions, 547 flow [2023-09-01 08:17:46,663 INFO L130 PetriNetUnfolder]: 21/263 cut-off events. [2023-09-01 08:17:46,663 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:17:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 263 events. 21/263 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2023-09-01 08:17:46,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-09-01 08:18:01,809 INFO L134 LiptonReduction]: Checked pairs total: 7078 [2023-09-01 08:18:01,810 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-09-01 08:18:01,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:18:01,829 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;@7d6b6b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:18:01,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-09-01 08:18:01,833 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:18:01,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:18:01,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:01,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:18:01,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:01,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash 49635, now seen corresponding path program 1 times [2023-09-01 08:18:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:01,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348515341] [2023-09-01 08:18:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:02,183 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 08:18:02,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:02,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348515341] [2023-09-01 08:18:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348515341] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:02,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:02,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261359628] [2023-09-01 08:18:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:02,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:02,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:02,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:02,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:18:02,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 08:18:02,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:02,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:18:02,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:09,543 INFO L130 PetriNetUnfolder]: 45294/56452 cut-off events. [2023-09-01 08:18:09,544 INFO L131 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2023-09-01 08:18:09,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113835 conditions, 56452 events. 45294/56452 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 312612 event pairs, 29191 based on Foata normal form. 0/17034 useless extension candidates. Maximal degree in co-relation 48897. Up to 27682 conditions per place. [2023-09-01 08:18:10,042 INFO L137 encePairwiseOnDemand]: 541/564 looper letters, 87 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-09-01 08:18:10,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-09-01 08:18:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2023-09-01 08:18:10,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867612293144206 [2023-09-01 08:18:10,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2023-09-01 08:18:10,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2023-09-01 08:18:10,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:10,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2023-09-01 08:18:10,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:10,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:10,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:10,087 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 3 states and 793 transitions. [2023-09-01 08:18:10,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-09-01 08:18:10,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:18:10,473 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 176 flow [2023-09-01 08:18:10,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-09-01 08:18:10,479 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-09-01 08:18:10,479 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 176 flow [2023-09-01 08:18:10,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 08:18:10,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:10,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:18:10,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:18:10,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:10,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1540239, now seen corresponding path program 1 times [2023-09-01 08:18:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824035465] [2023-09-01 08:18:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:10,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:10,580 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 08:18:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824035465] [2023-09-01 08:18:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824035465] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:18:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444139382] [2023-09-01 08:18:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:10,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:10,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:10,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:18:10,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 08:18:10,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:10,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:18:10,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:16,460 INFO L130 PetriNetUnfolder]: 45303/56458 cut-off events. [2023-09-01 08:18:16,460 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:18:16,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112882 conditions, 56458 events. 45303/56458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 313064 event pairs, 29192 based on Foata normal form. 0/16801 useless extension candidates. Maximal degree in co-relation 56421. Up to 55368 conditions per place. [2023-09-01 08:18:16,865 INFO L137 encePairwiseOnDemand]: 560/564 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-09-01 08:18:16,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 268 flow [2023-09-01 08:18:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-09-01 08:18:16,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42671394799054374 [2023-09-01 08:18:16,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-09-01 08:18:16,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-09-01 08:18:16,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:16,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-09-01 08:18:16,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 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 08:18:16,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:16,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:16,877 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 176 flow. Second operand 3 states and 722 transitions. [2023-09-01 08:18:16,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 268 flow [2023-09-01 08:18:16,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:18:16,880 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 154 flow [2023-09-01 08:18:16,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-09-01 08:18:16,885 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-09-01 08:18:16,886 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 154 flow [2023-09-01 08:18:16,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 08:18:16,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:16,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:18:16,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:18:16,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:16,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:16,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1540240, now seen corresponding path program 1 times [2023-09-01 08:18:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:16,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591019935] [2023-09-01 08:18:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:16,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:17,016 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 08:18:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591019935] [2023-09-01 08:18:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591019935] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303293359] [2023-09-01 08:18:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:17,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:17,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:17,025 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 08:18:17,029 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 08:18:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:17,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:18:17,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:17,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:17,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303293359] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:17,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:17,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:18:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648401520] [2023-09-01 08:18:17,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:17,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:18:17,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:18:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:18:17,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:18:17,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 08:18:17,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:17,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:18:17,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:30,986 INFO L130 PetriNetUnfolder]: 113220/141103 cut-off events. [2023-09-01 08:18:30,986 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:18:31,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282091 conditions, 141103 events. 113220/141103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9657. Compared 845128 event pairs, 72976 based on Foata normal form. 0/42947 useless extension candidates. Maximal degree in co-relation 282083. Up to 27688 conditions per place. [2023-09-01 08:18:31,765 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 198 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2023-09-01 08:18:31,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 988 flow [2023-09-01 08:18:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:18:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:18:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-09-01 08:18:31,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2023-09-01 08:18:31,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-09-01 08:18:31,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-09-01 08:18:31,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:31,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-09-01 08:18:31,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 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 08:18:31,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 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 08:18:31,787 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 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 08:18:31,787 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 154 flow. Second operand 6 states and 1572 transitions. [2023-09-01 08:18:31,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 988 flow [2023-09-01 08:18:31,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:31,794 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 303 flow [2023-09-01 08:18:31,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-09-01 08:18:31,796 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-09-01 08:18:31,797 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 303 flow [2023-09-01 08:18:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 08:18:31,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:31,798 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:18:31,808 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 08:18:32,004 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 08:18:32,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:32,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1357837084, now seen corresponding path program 2 times [2023-09-01 08:18:32,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:32,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880428355] [2023-09-01 08:18:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:32,111 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 08:18:32,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880428355] [2023-09-01 08:18:32,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880428355] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989444689] [2023-09-01 08:18:32,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:18:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:32,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:32,114 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 08:18:32,117 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 08:18:32,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:18:32,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:18:32,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:18:32,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:32,312 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 08:18:32,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:32,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989444689] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:32,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:18:32,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308630851] [2023-09-01 08:18:32,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:32,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:32,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:32,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:18:32,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 564 [2023-09-01 08:18:32,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 08:18:32,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:32,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 564 [2023-09-01 08:18:32,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:45,623 INFO L130 PetriNetUnfolder]: 113256/141138 cut-off events. [2023-09-01 08:18:45,624 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 08:18:45,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282212 conditions, 141138 events. 113256/141138 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9517. Compared 846324 event pairs, 72980 based on Foata normal form. 1/42000 useless extension candidates. Maximal degree in co-relation 282200. Up to 138408 conditions per place. [2023-09-01 08:18:46,488 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-09-01 08:18:46,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 425 flow [2023-09-01 08:18:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-09-01 08:18:46,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302600472813239 [2023-09-01 08:18:46,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-09-01 08:18:46,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-09-01 08:18:46,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:46,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-09-01 08:18:46,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 08:18:46,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:46,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:46,498 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 303 flow. Second operand 3 states and 728 transitions. [2023-09-01 08:18:46,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 425 flow [2023-09-01 08:18:46,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 395 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:46,501 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 275 flow [2023-09-01 08:18:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-09-01 08:18:46,502 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-09-01 08:18:46,502 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 275 flow [2023-09-01 08:18:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 08:18:46,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:46,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:18:46,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:18:46,709 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 08:18:46,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:46,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1510203433, now seen corresponding path program 1 times [2023-09-01 08:18:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:46,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618755953] [2023-09-01 08:18:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:46,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:46,791 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 08:18:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618755953] [2023-09-01 08:18:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618755953] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:18:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486162671] [2023-09-01 08:18:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:18:46,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 564 [2023-09-01 08:18:46,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 08:18:46,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:46,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 564 [2023-09-01 08:18:46,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:02,831 INFO L130 PetriNetUnfolder]: 130576/166603 cut-off events. [2023-09-01 08:19:02,831 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 08:19:03,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335276 conditions, 166603 events. 130576/166603 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 11664. Compared 1110438 event pairs, 33245 based on Foata normal form. 0/53042 useless extension candidates. Maximal degree in co-relation 335263. Up to 108456 conditions per place. [2023-09-01 08:19:03,809 INFO L137 encePairwiseOnDemand]: 560/564 looper letters, 98 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-09-01 08:19:03,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 106 transitions, 550 flow [2023-09-01 08:19:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:19:03,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:19:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2023-09-01 08:19:03,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598108747044917 [2023-09-01 08:19:03,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 778 transitions. [2023-09-01 08:19:03,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 778 transitions. [2023-09-01 08:19:03,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:03,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 778 transitions. [2023-09-01 08:19:03,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 08:19:03,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:19:03,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:19:03,824 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 275 flow. Second operand 3 states and 778 transitions. [2023-09-01 08:19:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 106 transitions, 550 flow [2023-09-01 08:19:03,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:19:03,837 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 277 flow [2023-09-01 08:19:03,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2023-09-01 08:19:03,841 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-09-01 08:19:03,841 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 277 flow [2023-09-01 08:19:03,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 08:19:03,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:03,844 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:19:03,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:19:03,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:19:03,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1476068836, now seen corresponding path program 1 times [2023-09-01 08:19:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:03,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144388324] [2023-09-01 08:19:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:03,962 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 08:19:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144388324] [2023-09-01 08:19:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144388324] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:19:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865609577] [2023-09-01 08:19:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:03,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:03,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:03,965 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 08:19:03,969 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 08:19:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:04,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:19:04,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:19:04,142 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 08:19:04,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:19:04,194 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 08:19:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865609577] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:19:04,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:19:04,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:19:04,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335468224] [2023-09-01 08:19:04,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:19:04,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:19:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:19:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:19:04,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:19:04,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 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 08:19:04,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:04,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:19:04,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:41,706 INFO L130 PetriNetUnfolder]: 289493/371126 cut-off events. [2023-09-01 08:19:41,706 INFO L131 PetriNetUnfolder]: For 19325/19325 co-relation queries the response was YES. [2023-09-01 08:19:42,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790228 conditions, 371126 events. 289493/371126 cut-off events. For 19325/19325 co-relation queries the response was YES. Maximal size of possible extension queue 15065. Compared 2582579 event pairs, 214171 based on Foata normal form. 12/141479 useless extension candidates. Maximal degree in co-relation 790214. Up to 38589 conditions per place. [2023-09-01 08:19:44,164 INFO L137 encePairwiseOnDemand]: 556/564 looper letters, 436 selfloop transitions, 51 changer transitions 0/493 dead transitions. [2023-09-01 08:19:44,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 493 transitions, 2369 flow [2023-09-01 08:19:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:19:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:19:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3176 transitions. [2023-09-01 08:19:44,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46926713947990545 [2023-09-01 08:19:44,171 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3176 transitions. [2023-09-01 08:19:44,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3176 transitions. [2023-09-01 08:19:44,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:44,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3176 transitions. [2023-09-01 08:19:44,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 264.6666666666667) internal successors, (3176), 12 states have internal predecessors, (3176), 0 states have call successors, (0), 0 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 08:19:44,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 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 08:19:44,188 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 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 08:19:44,189 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 277 flow. Second operand 12 states and 3176 transitions. [2023-09-01 08:19:44,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 493 transitions, 2369 flow [2023-09-01 08:19:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 493 transitions, 2357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:19:44,218 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 623 flow [2023-09-01 08:19:44,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=623, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-09-01 08:19:44,219 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-09-01 08:19:44,219 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 623 flow [2023-09-01 08:19:44,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 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 08:19:44,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:44,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:19:44,226 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 08:19:44,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:44,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:19:44,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash -428327773, now seen corresponding path program 1 times [2023-09-01 08:19:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:44,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840975757] [2023-09-01 08:19:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:44,490 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 08:19:44,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:44,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840975757] [2023-09-01 08:19:44,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840975757] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:19:44,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555364105] [2023-09-01 08:19:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:44,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:44,493 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 08:19:44,529 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 08:19:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:44,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:19:44,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:19:44,697 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 08:19:44,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:19:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555364105] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:44,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:19:44,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-09-01 08:19:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099203016] [2023-09-01 08:19:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:19:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:44,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:19:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:19:44,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 564 [2023-09-01 08:19:44,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 623 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 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 08:19:44,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:44,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 564 [2023-09-01 08:19:44,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand