./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-array-sum-alt.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 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:43:16,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:43:16,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:43:16,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:43:16,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:43:16,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:43:16,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:43:16,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:43:16,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:43:16,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:43:16,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:43:16,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:43:16,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:43:16,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:43:16,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:43:16,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:43:16,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:43:16,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:43:16,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:43:16,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:43:16,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:43:16,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:43:16,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:43:16,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:43:16,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:43:16,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:43:16,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:43:16,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:43:16,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:43:16,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:43:16,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:43:16,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:43:16,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:43:16,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:43:16,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:43:16,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:43:16,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:43:16,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:43:16,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:43:16,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:43:16,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:43:16,610 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:43:16,653 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:43:16,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:43:16,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:43:16,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:43:16,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:43:16,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:43:16,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:43:16,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:43:16,658 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:43:16,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:43:16,659 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:43:16,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:43:16,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:43:16,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:43:16,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:43:16,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:43:16,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:43:16,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:43:16,660 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:43:16,661 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:43:16,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:43:16,661 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:43:16,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:43:16,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:43:16,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:43:16,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:43:16,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:43:16,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:43:16,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:43:16,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:43:16,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:43:16,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:43:16,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:43:16,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:43:16,664 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:43:16,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:43:16,664 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:43:16,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:43:16,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:43:16,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:43:16,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:43:16,989 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:43:16,990 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:43:16,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-08-30 11:43:18,208 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:43:18,413 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:43:18,414 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-08-30 11:43:18,419 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afd2ce9f/9b86334837844cf7bb57a3eb98b77732/FLAGf04ba5be8 [2023-08-30 11:43:18,431 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7afd2ce9f/9b86334837844cf7bb57a3eb98b77732 [2023-08-30 11:43:18,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:43:18,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:43:18,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:43:18,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:43:18,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:43:18,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e29117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18, skipping insertion in model container [2023-08-30 11:43:18,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:43:18,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:43:18,615 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2023-08-30 11:43:18,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:43:18,628 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:43:18,646 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2023-08-30 11:43:18,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:43:18,657 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:43:18,658 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:43:18,663 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:43:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18 WrapperNode [2023-08-30 11:43:18,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:43:18,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:43:18,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:43:18,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:43:18,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,705 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 253 [2023-08-30 11:43:18,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:43:18,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:43:18,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:43:18,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:43:18,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:43:18,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:43:18,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:43:18,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:43:18,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (1/1) ... [2023-08-30 11:43:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:43:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:18,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:43:18,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:43:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:43:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:43:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:43:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:43:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:43:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:43:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:43:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:43:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:43:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:43:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:43:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:43:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:43:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:43:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:43:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:43:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:43:18,844 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:43:19,055 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:43:19,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:43:19,449 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:43:19,830 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:43:19,831 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:43:19,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:43:19 BoogieIcfgContainer [2023-08-30 11:43:19,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:43:19,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:43:19,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:43:19,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:43:19,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:43:18" (1/3) ... [2023-08-30 11:43:19,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f23b81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:43:19, skipping insertion in model container [2023-08-30 11:43:19,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:18" (2/3) ... [2023-08-30 11:43:19,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f23b81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:43:19, skipping insertion in model container [2023-08-30 11:43:19,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:43:19" (3/3) ... [2023-08-30 11:43:19,844 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-08-30 11:43:19,851 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:43:19,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:43:19,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 11:43:19,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:43:20,016 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:43:20,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 11:43:20,183 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 11:43:20,183 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:43:20,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 12/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-08-30 11:43:20,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 11:43:20,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 158 transitions, 331 flow [2023-08-30 11:43:20,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:43:20,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 158 transitions, 331 flow [2023-08-30 11:43:20,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 158 transitions, 331 flow [2023-08-30 11:43:20,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 158 transitions, 331 flow [2023-08-30 11:43:20,271 INFO L130 PetriNetUnfolder]: 11/158 cut-off events. [2023-08-30 11:43:20,272 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:43:20,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 158 events. 11/158 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 257 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2023-08-30 11:43:20,278 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2023-08-30 11:43:31,383 INFO L134 LiptonReduction]: Checked pairs total: 7429 [2023-08-30 11:43:31,383 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-30 11:43:31,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:43:31,401 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;@4cccc25c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:43:31,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 11:43:31,404 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 11:43:31,404 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:43:31,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:31,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:43:31,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:31,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:31,410 INFO L85 PathProgramCache]: Analyzing trace with hash 32372, now seen corresponding path program 1 times [2023-08-30 11:43:31,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110203809] [2023-08-30 11:43:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:31,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:31,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110203809] [2023-08-30 11:43:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110203809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:31,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:43:31,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:43:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787867204] [2023-08-30 11:43:31,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:31,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:43:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:43:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:43:31,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 11:43:31,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:31,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:31,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 11:43:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:34,510 INFO L130 PetriNetUnfolder]: 16609/21051 cut-off events. [2023-08-30 11:43:34,510 INFO L131 PetriNetUnfolder]: For 438/438 co-relation queries the response was YES. [2023-08-30 11:43:34,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42581 conditions, 21051 events. 16609/21051 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 1941. Compared 109889 event pairs, 8878 based on Foata normal form. 0/5826 useless extension candidates. Maximal degree in co-relation 19467. Up to 10455 conditions per place. [2023-08-30 11:43:34,664 INFO L137 encePairwiseOnDemand]: 326/336 looper letters, 77 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-30 11:43:34,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 82 transitions, 352 flow [2023-08-30 11:43:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:43:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:43:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-30 11:43:34,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-30 11:43:34,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-30 11:43:34,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-30 11:43:34,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:34,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-30 11:43:34,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:34,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:34,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:34,697 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 115 flow. Second operand 3 states and 513 transitions. [2023-08-30 11:43:34,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 82 transitions, 352 flow [2023-08-30 11:43:34,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 334 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:43:34,747 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 108 flow [2023-08-30 11:43:34,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-30 11:43:34,754 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-08-30 11:43:34,756 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 108 flow [2023-08-30 11:43:34,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:34,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:34,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:43:34,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:43:34,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:34,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1004470, now seen corresponding path program 1 times [2023-08-30 11:43:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:34,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232093779] [2023-08-30 11:43:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:34,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:34,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:34,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232093779] [2023-08-30 11:43:34,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232093779] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:34,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538346034] [2023-08-30 11:43:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:34,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:34,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:34,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:34,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:43:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:34,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:43:34,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:35,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:43:35,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538346034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:35,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:43:35,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:43:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699124557] [2023-08-30 11:43:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:43:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:43:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:43:35,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 11:43:35,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:35,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:35,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 11:43:35,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:37,549 INFO L130 PetriNetUnfolder]: 16609/21050 cut-off events. [2023-08-30 11:43:37,550 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 11:43:37,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42343 conditions, 21050 events. 16609/21050 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 1923. Compared 110947 event pairs, 8878 based on Foata normal form. 0/5828 useless extension candidates. Maximal degree in co-relation 21169. Up to 10453 conditions per place. [2023-08-30 11:43:37,778 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 76 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-30 11:43:37,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 340 flow [2023-08-30 11:43:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:43:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:43:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 639 transitions. [2023-08-30 11:43:37,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47544642857142855 [2023-08-30 11:43:37,782 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 639 transitions. [2023-08-30 11:43:37,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 639 transitions. [2023-08-30 11:43:37,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:37,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 639 transitions. [2023-08-30 11:43:37,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:37,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:37,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:37,791 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 108 flow. Second operand 4 states and 639 transitions. [2023-08-30 11:43:37,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 340 flow [2023-08-30 11:43:37,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:43:37,794 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 106 flow [2023-08-30 11:43:37,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 11:43:37,795 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-30 11:43:37,795 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 106 flow [2023-08-30 11:43:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:37,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:37,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:43:37,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:43:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:38,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:38,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1004471, now seen corresponding path program 1 times [2023-08-30 11:43:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89766211] [2023-08-30 11:43:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:38,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89766211] [2023-08-30 11:43:38,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89766211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:38,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72306042] [2023-08-30 11:43:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:38,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:38,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:38,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:38,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:43:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:38,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:43:38,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:38,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:43:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:38,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72306042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:43:38,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:43:38,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:43:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536216943] [2023-08-30 11:43:38,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:43:38,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:43:38,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:43:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:43:38,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 336 [2023-08-30 11:43:38,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:38,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:38,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 336 [2023-08-30 11:43:38,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:43,199 INFO L130 PetriNetUnfolder]: 41521/52622 cut-off events. [2023-08-30 11:43:43,200 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-30 11:43:43,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105842 conditions, 52622 events. 41521/52622 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 4056. Compared 303234 event pairs, 22195 based on Foata normal form. 0/14582 useless extension candidates. Maximal degree in co-relation 84667. Up to 10454 conditions per place. [2023-08-30 11:43:43,666 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 187 selfloop transitions, 5 changer transitions 0/195 dead transitions. [2023-08-30 11:43:43,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 195 transitions, 822 flow [2023-08-30 11:43:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:43:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:43:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1035 transitions. [2023-08-30 11:43:43,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2023-08-30 11:43:43,670 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1035 transitions. [2023-08-30 11:43:43,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1035 transitions. [2023-08-30 11:43:43,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:43,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1035 transitions. [2023-08-30 11:43:43,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:43,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:43,677 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:43,677 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 106 flow. Second operand 6 states and 1035 transitions. [2023-08-30 11:43:43,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 195 transitions, 822 flow [2023-08-30 11:43:43,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 195 transitions, 819 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:43:43,686 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 139 flow [2023-08-30 11:43:43,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-30 11:43:43,687 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 11:43:43,687 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 139 flow [2023-08-30 11:43:43,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:43,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:43,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:43:43,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:43:43,894 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,SelfDestructingSolverStorable2 [2023-08-30 11:43:43,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:43,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 965145024, now seen corresponding path program 1 times [2023-08-30 11:43:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920826921] [2023-08-30 11:43:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:44,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:44,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920826921] [2023-08-30 11:43:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920826921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:44,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:43:44,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:43:44,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233876207] [2023-08-30 11:43:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:43:44,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:43:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:43:44,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 336 [2023-08-30 11:43:44,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 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) [2023-08-30 11:43:44,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:44,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 336 [2023-08-30 11:43:44,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:47,106 INFO L130 PetriNetUnfolder]: 29857/39626 cut-off events. [2023-08-30 11:43:47,107 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 11:43:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79807 conditions, 39626 events. 29857/39626 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 3544. Compared 250148 event pairs, 18030 based on Foata normal form. 0/13196 useless extension candidates. Maximal degree in co-relation 72761. Up to 35851 conditions per place. [2023-08-30 11:43:47,310 INFO L137 encePairwiseOnDemand]: 325/336 looper letters, 95 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2023-08-30 11:43:47,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 454 flow [2023-08-30 11:43:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:43:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:43:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 773 transitions. [2023-08-30 11:43:47,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601190476190476 [2023-08-30 11:43:47,314 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 773 transitions. [2023-08-30 11:43:47,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 773 transitions. [2023-08-30 11:43:47,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:47,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 773 transitions. [2023-08-30 11:43:47,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:47,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:47,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:47,322 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 139 flow. Second operand 5 states and 773 transitions. [2023-08-30 11:43:47,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 454 flow [2023-08-30 11:43:47,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 446 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:43:47,326 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 167 flow [2023-08-30 11:43:47,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-30 11:43:47,328 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 11:43:47,328 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 167 flow [2023-08-30 11:43:47,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 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) [2023-08-30 11:43:47,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:47,329 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:43:47,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:43:47,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:47,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:47,330 INFO L85 PathProgramCache]: Analyzing trace with hash -139673867, now seen corresponding path program 2 times [2023-08-30 11:43:47,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:47,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99164482] [2023-08-30 11:43:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:47,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:47,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99164482] [2023-08-30 11:43:47,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99164482] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:47,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224538776] [2023-08-30 11:43:47,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:43:47,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:47,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:47,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:47,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:43:47,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:43:47,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:43:47,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:43:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:43:47,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:43:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224538776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:47,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:43:47,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:43:47,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649726230] [2023-08-30 11:43:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:43:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:43:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:43:47,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 11:43:47,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:47,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:47,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 11:43:47,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:51,286 INFO L130 PetriNetUnfolder]: 35064/44611 cut-off events. [2023-08-30 11:43:51,286 INFO L131 PetriNetUnfolder]: For 1939/2152 co-relation queries the response was YES. [2023-08-30 11:43:51,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101742 conditions, 44611 events. 35064/44611 cut-off events. For 1939/2152 co-relation queries the response was YES. Maximal size of possible extension queue 3678. Compared 257418 event pairs, 18875 based on Foata normal form. 214/14605 useless extension candidates. Maximal degree in co-relation 96776. Up to 44306 conditions per place. [2023-08-30 11:43:51,507 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 43 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 11:43:51,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 245 flow [2023-08-30 11:43:51,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:43:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:43:51,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-30 11:43:51,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593253968253968 [2023-08-30 11:43:51,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-30 11:43:51,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-30 11:43:51,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:51,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-30 11:43:51,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:51,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:51,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:51,514 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 167 flow. Second operand 3 states and 463 transitions. [2023-08-30 11:43:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 245 flow [2023-08-30 11:43:51,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 229 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 11:43:51,522 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 143 flow [2023-08-30 11:43:51,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-08-30 11:43:51,523 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-30 11:43:51,523 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 143 flow [2023-08-30 11:43:51,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:51,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:51,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:43:51,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:43:51,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:51,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:51,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -139854526, now seen corresponding path program 1 times [2023-08-30 11:43:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959029071] [2023-08-30 11:43:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:43:51,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:51,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959029071] [2023-08-30 11:43:51,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959029071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:51,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:43:51,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:43:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99179800] [2023-08-30 11:43:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:51,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:43:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:51,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:43:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:43:51,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 11:43:51,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:51,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:51,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 11:43:51,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:56,366 INFO L130 PetriNetUnfolder]: 43604/56699 cut-off events. [2023-08-30 11:43:56,367 INFO L131 PetriNetUnfolder]: For 1144/1357 co-relation queries the response was YES. [2023-08-30 11:43:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124827 conditions, 56699 events. 43604/56699 cut-off events. For 1144/1357 co-relation queries the response was YES. Maximal size of possible extension queue 4863. Compared 357577 event pairs, 9535 based on Foata normal form. 213/19244 useless extension candidates. Maximal degree in co-relation 124816. Up to 37137 conditions per place. [2023-08-30 11:43:56,603 INFO L137 encePairwiseOnDemand]: 330/336 looper letters, 73 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-30 11:43:56,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 378 flow [2023-08-30 11:43:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:43:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:43:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-30 11:43:56,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-30 11:43:56,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-30 11:43:56,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-30 11:43:56,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:56,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-30 11:43:56,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,609 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 143 flow. Second operand 3 states and 497 transitions. [2023-08-30 11:43:56,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 378 flow [2023-08-30 11:43:56,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:43:56,616 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 176 flow [2023-08-30 11:43:56,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-30 11:43:56,616 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-30 11:43:56,617 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 176 flow [2023-08-30 11:43:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:56,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:43:56,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:43:56,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:43:56,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -139854459, now seen corresponding path program 1 times [2023-08-30 11:43:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:56,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207603868] [2023-08-30 11:43:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:43:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207603868] [2023-08-30 11:43:56,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207603868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:56,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:43:56,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:43:56,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937297277] [2023-08-30 11:43:56,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:56,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:43:56,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:43:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:43:56,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 11:43:56,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:56,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:56,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 11:43:56,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:01,122 INFO L130 PetriNetUnfolder]: 44577/58777 cut-off events. [2023-08-30 11:44:01,122 INFO L131 PetriNetUnfolder]: For 6072/6072 co-relation queries the response was YES. [2023-08-30 11:44:01,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134465 conditions, 58777 events. 44577/58777 cut-off events. For 6072/6072 co-relation queries the response was YES. Maximal size of possible extension queue 4976. Compared 386139 event pairs, 18154 based on Foata normal form. 0/22943 useless extension candidates. Maximal degree in co-relation 134452. Up to 36768 conditions per place. [2023-08-30 11:44:01,400 INFO L137 encePairwiseOnDemand]: 332/336 looper letters, 74 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-30 11:44:01,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 385 flow [2023-08-30 11:44:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 11:44:01,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-30 11:44:01,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 11:44:01,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 11:44:01,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:01,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 11:44:01,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:01,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:01,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:01,407 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 176 flow. Second operand 3 states and 496 transitions. [2023-08-30 11:44:01,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 385 flow [2023-08-30 11:44:01,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:44:01,419 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 166 flow [2023-08-30 11:44:01,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-30 11:44:01,419 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 11:44:01,420 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 166 flow [2023-08-30 11:44:01,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:01,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:01,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:44:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:44:01,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:01,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -139854529, now seen corresponding path program 1 times [2023-08-30 11:44:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714652582] [2023-08-30 11:44:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714652582] [2023-08-30 11:44:01,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714652582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:01,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767788746] [2023-08-30 11:44:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:01,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:01,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:01,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:01,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:44:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:01,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:44:01,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:01,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:01,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:01,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:44:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:01,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:01,936 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_227 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-30 11:44:01,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:01,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-30 11:44:01,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:01,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-30 11:44:02,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 11:44:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 11:44:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767788746] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:02,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:02,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 11:44:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749700370] [2023-08-30 11:44:02,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:02,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 11:44:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 11:44:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-08-30 11:44:02,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 336 [2023-08-30 11:44:02,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 116.25) internal successors, (1395), 12 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:02,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:02,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 336 [2023-08-30 11:44:02,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:08,156 INFO L130 PetriNetUnfolder]: 56035/75535 cut-off events. [2023-08-30 11:44:08,156 INFO L131 PetriNetUnfolder]: For 13508/13508 co-relation queries the response was YES. [2023-08-30 11:44:08,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169231 conditions, 75535 events. 56035/75535 cut-off events. For 13508/13508 co-relation queries the response was YES. Maximal size of possible extension queue 7249. Compared 541624 event pairs, 20794 based on Foata normal form. 0/28461 useless extension candidates. Maximal degree in co-relation 169218. Up to 48809 conditions per place. [2023-08-30 11:44:08,529 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 93 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2023-08-30 11:44:08,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 565 flow [2023-08-30 11:44:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-30 11:44:08,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2023-08-30 11:44:08,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-30 11:44:08,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-30 11:44:08,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:08,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-30 11:44:08,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:08,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:08,538 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:08,539 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 166 flow. Second operand 8 states and 1029 transitions. [2023-08-30 11:44:08,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 565 flow [2023-08-30 11:44:08,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:44:08,549 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 280 flow [2023-08-30 11:44:08,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-30 11:44:08,550 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-30 11:44:08,550 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 280 flow [2023-08-30 11:44:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.25) internal successors, (1395), 12 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:08,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:08,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:44:08,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:08,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:08,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:08,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash -139854530, now seen corresponding path program 1 times [2023-08-30 11:44:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709160815] [2023-08-30 11:44:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:09,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:09,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709160815] [2023-08-30 11:44:09,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709160815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:09,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476849085] [2023-08-30 11:44:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:09,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:09,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:09,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:09,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:44:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:09,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:44:09,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:09,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:09,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:44:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:09,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:09,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:09,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-30 11:44:09,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:09,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-30 11:44:09,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 11:44:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476849085] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:09,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:09,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 11:44:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325119268] [2023-08-30 11:44:09,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 11:44:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:09,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 11:44:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=100, Unknown=1, NotChecked=0, Total=132 [2023-08-30 11:44:09,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 336 [2023-08-30 11:44:09,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 280 flow. Second operand has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:09,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:09,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 336 [2023-08-30 11:44:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:16,203 INFO L130 PetriNetUnfolder]: 59621/80797 cut-off events. [2023-08-30 11:44:16,203 INFO L131 PetriNetUnfolder]: For 34993/34993 co-relation queries the response was YES. [2023-08-30 11:44:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188667 conditions, 80797 events. 59621/80797 cut-off events. For 34993/34993 co-relation queries the response was YES. Maximal size of possible extension queue 7839. Compared 590874 event pairs, 24511 based on Foata normal form. 4/32918 useless extension candidates. Maximal degree in co-relation 188651. Up to 53993 conditions per place. [2023-08-30 11:44:16,616 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 93 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2023-08-30 11:44:16,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 647 flow [2023-08-30 11:44:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1132 transitions. [2023-08-30 11:44:16,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211309523809524 [2023-08-30 11:44:16,619 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1132 transitions. [2023-08-30 11:44:16,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1132 transitions. [2023-08-30 11:44:16,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:16,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1132 transitions. [2023-08-30 11:44:16,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.5) internal successors, (1132), 8 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:16,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:16,626 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:16,626 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 280 flow. Second operand 8 states and 1132 transitions. [2023-08-30 11:44:16,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 647 flow [2023-08-30 11:44:16,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 638 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:44:16,640 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 344 flow [2023-08-30 11:44:16,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2023-08-30 11:44:16,641 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-30 11:44:16,641 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 344 flow [2023-08-30 11:44:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:16,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:16,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:16,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:16,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:16,849 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:16,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash -202912497, now seen corresponding path program 1 times [2023-08-30 11:44:16,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:16,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196267376] [2023-08-30 11:44:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:16,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:16,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196267376] [2023-08-30 11:44:16,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196267376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:16,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:16,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:44:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930067795] [2023-08-30 11:44:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:16,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:44:16,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:16,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:44:16,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:44:17,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 336 [2023-08-30 11:44:17,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:17,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:17,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 336 [2023-08-30 11:44:17,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:22,397 INFO L130 PetriNetUnfolder]: 47391/67898 cut-off events. [2023-08-30 11:44:22,397 INFO L131 PetriNetUnfolder]: For 56878/56943 co-relation queries the response was YES. [2023-08-30 11:44:22,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166641 conditions, 67898 events. 47391/67898 cut-off events. For 56878/56943 co-relation queries the response was YES. Maximal size of possible extension queue 6617. Compared 525016 event pairs, 33952 based on Foata normal form. 65/30952 useless extension candidates. Maximal degree in co-relation 166623. Up to 66858 conditions per place. [2023-08-30 11:44:22,742 INFO L137 encePairwiseOnDemand]: 327/336 looper letters, 91 selfloop transitions, 4 changer transitions 2/101 dead transitions. [2023-08-30 11:44:22,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 627 flow [2023-08-30 11:44:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:44:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:44:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 749 transitions. [2023-08-30 11:44:22,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2023-08-30 11:44:22,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 749 transitions. [2023-08-30 11:44:22,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 749 transitions. [2023-08-30 11:44:22,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:22,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 749 transitions. [2023-08-30 11:44:22,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:22,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:22,749 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:22,749 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 344 flow. Second operand 5 states and 749 transitions. [2023-08-30 11:44:22,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 627 flow [2023-08-30 11:44:22,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 618 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:44:22,773 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 360 flow [2023-08-30 11:44:22,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2023-08-30 11:44:22,773 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-30 11:44:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 360 flow [2023-08-30 11:44:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:22,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:22,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:22,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:44:22,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:22,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash -40520299, now seen corresponding path program 1 times [2023-08-30 11:44:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158484122] [2023-08-30 11:44:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:23,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158484122] [2023-08-30 11:44:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158484122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826946009] [2023-08-30 11:44:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:23,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:23,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:23,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:44:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:23,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 11:44:23,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:23,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:23,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:23,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:44:23,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:23,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:44:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:23,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:23,397 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_327) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_328) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-08-30 11:44:23,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:23,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 11:44:23,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:23,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-08-30 11:44:23,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-30 11:44:23,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-08-30 11:44:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 11:44:23,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826946009] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:23,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-30 11:44:23,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65317513] [2023-08-30 11:44:23,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:23,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 11:44:23,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:23,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 11:44:23,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=159, Unknown=5, NotChecked=26, Total=240 [2023-08-30 11:44:23,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 11:44:23,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 360 flow. Second operand has 16 states, 16 states have (on average 113.25) internal successors, (1812), 16 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:23,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:23,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 11:44:23,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:30,321 INFO L130 PetriNetUnfolder]: 56027/75633 cut-off events. [2023-08-30 11:44:30,321 INFO L131 PetriNetUnfolder]: For 59599/59677 co-relation queries the response was YES. [2023-08-30 11:44:30,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202353 conditions, 75633 events. 56027/75633 cut-off events. For 59599/59677 co-relation queries the response was YES. Maximal size of possible extension queue 7412. Compared 545145 event pairs, 12440 based on Foata normal form. 118/34746 useless extension candidates. Maximal degree in co-relation 202332. Up to 50953 conditions per place. [2023-08-30 11:44:30,767 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 117 selfloop transitions, 29 changer transitions 1/150 dead transitions. [2023-08-30 11:44:30,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 963 flow [2023-08-30 11:44:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-08-30 11:44:30,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2023-08-30 11:44:30,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-08-30 11:44:30,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-08-30 11:44:30,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:30,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-08-30 11:44:30,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:30,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:30,775 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:30,775 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 360 flow. Second operand 8 states and 1026 transitions. [2023-08-30 11:44:30,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 963 flow [2023-08-30 11:44:30,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 150 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:44:30,848 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 552 flow [2023-08-30 11:44:30,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=552, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-08-30 11:44:30,848 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-08-30 11:44:30,848 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 552 flow [2023-08-30 11:44:30,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.25) internal successors, (1812), 16 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:30,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:30,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:30,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:31,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:31,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:31,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash -40520016, now seen corresponding path program 1 times [2023-08-30 11:44:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:31,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489737449] [2023-08-30 11:44:31,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489737449] [2023-08-30 11:44:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489737449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952753619] [2023-08-30 11:44:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:31,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:31,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:31,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:31,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:44:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:31,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:44:31,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:31,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952753619] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:31,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 11:44:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144954974] [2023-08-30 11:44:31,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:31,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 11:44:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 11:44:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-30 11:44:31,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 336 [2023-08-30 11:44:31,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 552 flow. Second operand has 14 states, 14 states have (on average 132.28571428571428) internal successors, (1852), 14 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:31,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:31,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 336 [2023-08-30 11:44:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:37,592 INFO L130 PetriNetUnfolder]: 48036/64983 cut-off events. [2023-08-30 11:44:37,592 INFO L131 PetriNetUnfolder]: For 85799/85882 co-relation queries the response was YES. [2023-08-30 11:44:37,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181321 conditions, 64983 events. 48036/64983 cut-off events. For 85799/85882 co-relation queries the response was YES. Maximal size of possible extension queue 6044. Compared 456636 event pairs, 21773 based on Foata normal form. 931/31168 useless extension candidates. Maximal degree in co-relation 181298. Up to 44645 conditions per place. [2023-08-30 11:44:37,956 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 245 selfloop transitions, 15 changer transitions 3/266 dead transitions. [2023-08-30 11:44:37,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 266 transitions, 1716 flow [2023-08-30 11:44:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:44:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:44:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1805 transitions. [2023-08-30 11:44:37,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476686507936508 [2023-08-30 11:44:37,960 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1805 transitions. [2023-08-30 11:44:37,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1805 transitions. [2023-08-30 11:44:37,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:37,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1805 transitions. [2023-08-30 11:44:37,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.41666666666666) internal successors, (1805), 12 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,969 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 336.0) internal successors, (4368), 13 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:37,969 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 552 flow. Second operand 12 states and 1805 transitions. [2023-08-30 11:44:37,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 266 transitions, 1716 flow [2023-08-30 11:44:38,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 266 transitions, 1665 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-30 11:44:38,106 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 706 flow [2023-08-30 11:44:38,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=706, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-08-30 11:44:38,107 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2023-08-30 11:44:38,107 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 706 flow [2023-08-30 11:44:38,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 132.28571428571428) internal successors, (1852), 14 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:38,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:38,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:38,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 11:44:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:38,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:38,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash -40342668, now seen corresponding path program 1 times [2023-08-30 11:44:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710340368] [2023-08-30 11:44:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710340368] [2023-08-30 11:44:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710340368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149219257] [2023-08-30 11:44:38,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:38,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:38,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:38,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:44:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:38,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 11:44:38,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:38,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:38,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:44:38,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:38,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:44:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:38,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:38,823 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_408 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_408) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-08-30 11:44:38,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:38,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-30 11:44:38,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:38,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-30 11:44:38,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-30 11:44:38,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-30 11:44:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149219257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:38,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 11:44:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17350593] [2023-08-30 11:44:38,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 11:44:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 11:44:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-30 11:44:38,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 11:44:38,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 706 flow. Second operand has 15 states, 15 states have (on average 113.26666666666667) internal successors, (1699), 15 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:38,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:38,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 11:44:38,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:44,908 INFO L130 PetriNetUnfolder]: 48483/64547 cut-off events. [2023-08-30 11:44:44,908 INFO L131 PetriNetUnfolder]: For 105612/105692 co-relation queries the response was YES. [2023-08-30 11:44:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190741 conditions, 64547 events. 48483/64547 cut-off events. For 105612/105692 co-relation queries the response was YES. Maximal size of possible extension queue 6053. Compared 441161 event pairs, 18031 based on Foata normal form. 124/29824 useless extension candidates. Maximal degree in co-relation 190712. Up to 44987 conditions per place. [2023-08-30 11:44:45,348 INFO L137 encePairwiseOnDemand]: 324/336 looper letters, 122 selfloop transitions, 35 changer transitions 1/161 dead transitions. [2023-08-30 11:44:45,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 1240 flow [2023-08-30 11:44:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2023-08-30 11:44:45,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38132440476190477 [2023-08-30 11:44:45,351 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1025 transitions. [2023-08-30 11:44:45,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1025 transitions. [2023-08-30 11:44:45,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:45,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1025 transitions. [2023-08-30 11:44:45,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.125) internal successors, (1025), 8 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:45,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:45,357 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:45,357 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 706 flow. Second operand 8 states and 1025 transitions. [2023-08-30 11:44:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 1240 flow [2023-08-30 11:44:45,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 1227 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 11:44:45,516 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 772 flow [2023-08-30 11:44:45,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-08-30 11:44:45,516 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2023-08-30 11:44:45,517 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 772 flow [2023-08-30 11:44:45,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.26666666666667) internal successors, (1699), 15 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:45,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:45,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:45,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:45,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 11:44:45,719 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:45,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561779, now seen corresponding path program 1 times [2023-08-30 11:44:45,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140520425] [2023-08-30 11:44:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:45,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140520425] [2023-08-30 11:44:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140520425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226969343] [2023-08-30 11:44:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:45,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:45,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:45,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:44:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:46,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 11:44:46,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:46,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:46,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:46,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:44:46,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:46,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:44:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:46,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:46,202 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_452 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_452) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-08-30 11:44:46,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:46,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 11:44:46,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:46,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-08-30 11:44:46,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-08-30 11:44:46,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-08-30 11:44:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:46,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226969343] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:46,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 11:44:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360031293] [2023-08-30 11:44:46,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 11:44:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 11:44:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-30 11:44:46,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 11:44:46,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 772 flow. Second operand has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:46,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:46,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 11:44:46,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:54,135 INFO L130 PetriNetUnfolder]: 57546/82923 cut-off events. [2023-08-30 11:44:54,135 INFO L131 PetriNetUnfolder]: For 188954/189235 co-relation queries the response was YES. [2023-08-30 11:44:54,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248020 conditions, 82923 events. 57546/82923 cut-off events. For 188954/189235 co-relation queries the response was YES. Maximal size of possible extension queue 8435. Compared 682599 event pairs, 16868 based on Foata normal form. 278/41079 useless extension candidates. Maximal degree in co-relation 247990. Up to 48298 conditions per place. [2023-08-30 11:44:54,719 INFO L137 encePairwiseOnDemand]: 323/336 looper letters, 146 selfloop transitions, 40 changer transitions 1/195 dead transitions. [2023-08-30 11:44:54,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 195 transitions, 1901 flow [2023-08-30 11:44:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:44:54,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:44:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1029 transitions. [2023-08-30 11:44:54,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2023-08-30 11:44:54,722 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1029 transitions. [2023-08-30 11:44:54,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1029 transitions. [2023-08-30 11:44:54,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:54,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1029 transitions. [2023-08-30 11:44:54,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.625) internal successors, (1029), 8 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:54,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:54,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:54,727 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 772 flow. Second operand 8 states and 1029 transitions. [2023-08-30 11:44:54,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 195 transitions, 1901 flow [2023-08-30 11:44:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 195 transitions, 1857 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 11:44:55,105 INFO L231 Difference]: Finished difference. Result has 108 places, 117 transitions, 1059 flow [2023-08-30 11:44:55,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1059, PETRI_PLACES=108, PETRI_TRANSITIONS=117} [2023-08-30 11:44:55,106 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2023-08-30 11:44:55,106 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 117 transitions, 1059 flow [2023-08-30 11:44:55,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:55,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:55,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:44:55,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 11:44:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 11:44:55,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:44:55,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561778, now seen corresponding path program 1 times [2023-08-30 11:44:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087015369] [2023-08-30 11:44:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087015369] [2023-08-30 11:44:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087015369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522852794] [2023-08-30 11:44:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:55,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:55,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:55,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:44:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 11:44:55,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:55,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:44:55,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:55,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:44:55,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:44:55,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:44:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:55,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:55,844 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_496 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_496) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2023-08-30 11:44:57,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:57,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-30 11:44:57,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:44:57,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 117 [2023-08-30 11:44:57,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-30 11:44:57,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-08-30 11:44:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522852794] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:57,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 11:44:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863260502] [2023-08-30 11:44:57,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:57,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 11:44:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 11:44:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=142, Unknown=2, NotChecked=24, Total=210 [2023-08-30 11:44:58,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 336 [2023-08-30 11:44:58,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 1059 flow. Second operand has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:58,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:58,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 336 [2023-08-30 11:44:58,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:06,457 INFO L130 PetriNetUnfolder]: 59726/86555 cut-off events. [2023-08-30 11:45:06,457 INFO L131 PetriNetUnfolder]: For 212223/212490 co-relation queries the response was YES. [2023-08-30 11:45:06,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278683 conditions, 86555 events. 59726/86555 cut-off events. For 212223/212490 co-relation queries the response was YES. Maximal size of possible extension queue 8543. Compared 725251 event pairs, 20262 based on Foata normal form. 264/47471 useless extension candidates. Maximal degree in co-relation 278650. Up to 52001 conditions per place. [2023-08-30 11:45:07,127 INFO L137 encePairwiseOnDemand]: 325/336 looper letters, 145 selfloop transitions, 56 changer transitions 1/210 dead transitions. [2023-08-30 11:45:07,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 210 transitions, 2198 flow [2023-08-30 11:45:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:45:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:45:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2023-08-30 11:45:07,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2023-08-30 11:45:07,130 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2023-08-30 11:45:07,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2023-08-30 11:45:07,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:07,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2023-08-30 11:45:07,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:07,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:07,135 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 336.0) internal successors, (3024), 9 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:07,135 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 1059 flow. Second operand 8 states and 1026 transitions. [2023-08-30 11:45:07,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 210 transitions, 2198 flow [2023-08-30 11:45:07,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2185 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:07,933 INFO L231 Difference]: Finished difference. Result has 113 places, 133 transitions, 1340 flow [2023-08-30 11:45:07,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1340, PETRI_PLACES=113, PETRI_TRANSITIONS=133} [2023-08-30 11:45:07,934 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2023-08-30 11:45:07,934 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 133 transitions, 1340 flow [2023-08-30 11:45:07,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.4) internal successors, (1701), 15 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:07,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:07,935 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:45:07,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 11:45:08,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 11:45:08,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:45:08,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1088169299, now seen corresponding path program 1 times [2023-08-30 11:45:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543615581] [2023-08-30 11:45:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:45:08,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:08,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543615581] [2023-08-30 11:45:08,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543615581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:08,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:08,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:45:08,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704875100] [2023-08-30 11:45:08,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:08,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:08,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:08,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 11:45:08,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 133 transitions, 1340 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:08,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:08,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 11:45:08,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:15,956 INFO L130 PetriNetUnfolder]: 53455/77962 cut-off events. [2023-08-30 11:45:15,956 INFO L131 PetriNetUnfolder]: For 220168/220444 co-relation queries the response was YES. [2023-08-30 11:45:16,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255078 conditions, 77962 events. 53455/77962 cut-off events. For 220168/220444 co-relation queries the response was YES. Maximal size of possible extension queue 7700. Compared 645058 event pairs, 35339 based on Foata normal form. 272/44483 useless extension candidates. Maximal degree in co-relation 255044. Up to 77579 conditions per place. [2023-08-30 11:45:16,566 INFO L137 encePairwiseOnDemand]: 334/336 looper letters, 118 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2023-08-30 11:45:16,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 130 transitions, 1523 flow [2023-08-30 11:45:16,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-30 11:45:16,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-30 11:45:16,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-30 11:45:16,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-30 11:45:16,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:16,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-30 11:45:16,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:16,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:16,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:16,569 INFO L175 Difference]: Start difference. First operand has 113 places, 133 transitions, 1340 flow. Second operand 3 states and 462 transitions. [2023-08-30 11:45:16,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 130 transitions, 1523 flow [2023-08-30 11:45:17,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 1506 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:45:17,140 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1270 flow [2023-08-30 11:45:17,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1270, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-08-30 11:45:17,141 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-08-30 11:45:17,141 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1270 flow [2023-08-30 11:45:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:17,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:17,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:45:17,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 11:45:17,142 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 11:45:17,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1088169298, now seen corresponding path program 2 times [2023-08-30 11:45:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801438022] [2023-08-30 11:45:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:45:17,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:17,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801438022] [2023-08-30 11:45:17,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801438022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:17,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:17,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:45:17,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334815945] [2023-08-30 11:45:17,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:17,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:17,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:17,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2023-08-30 11:45:17,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 1270 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:17,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:17,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2023-08-30 11:45:17,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand