./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-symm.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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:20:40,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:20:40,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:20:40,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:20:40,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:20:40,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:20:40,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:20:40,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:20:40,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:20:40,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:20:40,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:20:40,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:20:40,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:20:40,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:20:40,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:20:40,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:20:40,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:20:40,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:20:40,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:20:40,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:20:40,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:20:40,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:20:40,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:20:40,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:20:40,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:20:40,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:20:40,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:20:40,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:20:40,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:20:40,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:20:40,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:20:40,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:20:40,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:20:40,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:20:40,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:20:40,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:20:40,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:20:40,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:20:40,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:20:40,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:20:40,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:20:40,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:20:40,693 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:20:40,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:20:40,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:20:40,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:20:40,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:20:40,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:20:40,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:20:40,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:20:40,697 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:20:40,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:20:40,698 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:20:40,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:20:40,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:20:40,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:20:40,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:20:40,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:20:40,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:20:40,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:20:40,699 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:20:40,699 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:20:40,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:20:40,700 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:20:40,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:20:40,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:20:40,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:20:40,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:20:40,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:20:40,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:20:40,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:20:40,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:20:40,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:20:40,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:20:40,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:20:40,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:20:40,703 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:20:40,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:20:40,703 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:20:40,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:20:41,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:20:41,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:20:41,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:20:41,059 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:20:41,059 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:20:41,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-09-01 07:20:42,275 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:20:42,492 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:20:42,492 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-symm.wvr.c [2023-09-01 07:20:42,498 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e98859c20/0618312a131a4141ad41ffe97077752e/FLAGd9c1f135a [2023-09-01 07:20:42,511 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e98859c20/0618312a131a4141ad41ffe97077752e [2023-09-01 07:20:42,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:20:42,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:20:42,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:20:42,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:20:42,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:20:42,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44106998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42, skipping insertion in model container [2023-09-01 07:20:42,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:20:42,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:20:42,675 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/array-eq-symm.wvr.c[2251,2264] [2023-09-01 07:20:42,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:20:42,689 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:20:42,705 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/array-eq-symm.wvr.c[2251,2264] [2023-09-01 07:20:42,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:20:42,721 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:20:42,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42 WrapperNode [2023-09-01 07:20:42,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:20:42,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:20:42,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:20:42,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:20:42,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,755 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 120 [2023-09-01 07:20:42,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:20:42,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:20:42,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:20:42,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:20:42,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:20:42,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:20:42,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:20:42,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:20:42,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (1/1) ... [2023-09-01 07:20:42,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:20:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:42,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:20:42,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:20:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:20:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:20:42,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:20:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:20:42,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:20:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:20:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:20:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:20:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:20:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:20:42,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:20:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:20:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:20:42,871 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:20:42,951 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:20:42,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:20:43,381 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:20:43,389 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:20:43,389 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:20:43,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:20:43 BoogieIcfgContainer [2023-09-01 07:20:43,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:20:43,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:20:43,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:20:43,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:20:43,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:20:42" (1/3) ... [2023-09-01 07:20:43,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728bbcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:20:43, skipping insertion in model container [2023-09-01 07:20:43,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:20:42" (2/3) ... [2023-09-01 07:20:43,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728bbcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:20:43, skipping insertion in model container [2023-09-01 07:20:43,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:20:43" (3/3) ... [2023-09-01 07:20:43,401 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-09-01 07:20:43,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:20:43,417 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:20:43,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 07:20:43,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:20:43,528 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:20:43,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 177 transitions, 370 flow [2023-09-01 07:20:43,688 INFO L130 PetriNetUnfolder]: 15/175 cut-off events. [2023-09-01 07:20:43,689 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:20:43,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 175 events. 15/175 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 178 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-09-01 07:20:43,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 177 transitions, 370 flow [2023-09-01 07:20:43,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 159 transitions, 327 flow [2023-09-01 07:20:43,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:20:43,726 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 327 flow [2023-09-01 07:20:43,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 327 flow [2023-09-01 07:20:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 327 flow [2023-09-01 07:20:43,756 INFO L130 PetriNetUnfolder]: 14/159 cut-off events. [2023-09-01 07:20:43,756 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:20:43,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 159 events. 14/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2023-09-01 07:20:43,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 1400 [2023-09-01 07:20:48,584 INFO L134 LiptonReduction]: Checked pairs total: 1963 [2023-09-01 07:20:48,584 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-09-01 07:20:48,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:20:48,603 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;@6069535f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:20:48,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-09-01 07:20:48,607 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:20:48,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:20:48,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:48,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:20:48,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:48,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash 21487, now seen corresponding path program 1 times [2023-09-01 07:20:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289406922] [2023-09-01 07:20:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289406922] [2023-09-01 07:20:48,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289406922] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:48,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:48,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:20:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167398242] [2023-09-01 07:20:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:48,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:20:48,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:20:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:20:48,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-09-01 07:20:48,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:48,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:48,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-09-01 07:20:48,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:49,042 INFO L130 PetriNetUnfolder]: 181/307 cut-off events. [2023-09-01 07:20:49,043 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 07:20:49,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 307 events. 181/307 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1032 event pairs, 114 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 270. Up to 157 conditions per place. [2023-09-01 07:20:49,047 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-09-01 07:20:49,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 198 flow [2023-09-01 07:20:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:20:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:20:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-09-01 07:20:49,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2023-09-01 07:20:49,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-09-01 07:20:49,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-09-01 07:20:49,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:49,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-09-01 07:20:49,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,078 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 59 flow. Second operand 3 states and 520 transitions. [2023-09-01 07:20:49,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 198 flow [2023-09-01 07:20:49,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:20:49,083 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 90 flow [2023-09-01 07:20:49,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-09-01 07:20:49,088 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-09-01 07:20:49,088 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 90 flow [2023-09-01 07:20:49,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:49,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:20:49,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:20:49,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:49,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:49,090 INFO L85 PathProgramCache]: Analyzing trace with hash 667124, now seen corresponding path program 1 times [2023-09-01 07:20:49,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:49,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696697591] [2023-09-01 07:20:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696697591] [2023-09-01 07:20:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696697591] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:49,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:20:49,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455522436] [2023-09-01 07:20:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:49,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:20:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:20:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:20:49,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-09-01 07:20:49,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:49,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-09-01 07:20:49,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:49,316 INFO L130 PetriNetUnfolder]: 181/305 cut-off events. [2023-09-01 07:20:49,316 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 07:20:49,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 305 events. 181/305 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1052 event pairs, 114 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 313. Up to 305 conditions per place. [2023-09-01 07:20:49,331 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-09-01 07:20:49,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 134 flow [2023-09-01 07:20:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:20:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:20:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-09-01 07:20:49,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618249534450652 [2023-09-01 07:20:49,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-09-01 07:20:49,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-09-01 07:20:49,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:49,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-09-01 07:20:49,339 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) [2023-09-01 07:20:49,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,344 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 90 flow. Second operand 3 states and 496 transitions. [2023-09-01 07:20:49,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 134 flow [2023-09-01 07:20:49,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:20:49,346 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 76 flow [2023-09-01 07:20:49,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-09-01 07:20:49,347 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-09-01 07:20:49,347 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 76 flow [2023-09-01 07:20:49,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:49,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:20:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:20:49,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:49,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash 667126, now seen corresponding path program 1 times [2023-09-01 07:20:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055293804] [2023-09-01 07:20:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:49,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:49,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055293804] [2023-09-01 07:20:49,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055293804] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:49,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542770093] [2023-09-01 07:20:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:49,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:49,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:49,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:20:49,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:20:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:20:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:49,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:20:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542770093] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:20:49,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:20:49,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 07:20:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098302163] [2023-09-01 07:20:49,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:20:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:20:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:20:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:20:49,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-09-01 07:20:49,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:49,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-09-01 07:20:49,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:49,896 INFO L130 PetriNetUnfolder]: 451/758 cut-off events. [2023-09-01 07:20:49,896 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-09-01 07:20:49,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 758 events. 451/758 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3259 event pairs, 285 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 1586. Up to 155 conditions per place. [2023-09-01 07:20:49,901 INFO L137 encePairwiseOnDemand]: 352/358 looper letters, 90 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-09-01 07:20:49,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 103 transitions, 470 flow [2023-09-01 07:20:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:20:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:20:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1051 transitions. [2023-09-01 07:20:49,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489292364990689 [2023-09-01 07:20:49,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1051 transitions. [2023-09-01 07:20:49,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1051 transitions. [2023-09-01 07:20:49,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:49,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1051 transitions. [2023-09-01 07:20:49,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,914 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,914 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 76 flow. Second operand 6 states and 1051 transitions. [2023-09-01 07:20:49,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 103 transitions, 470 flow [2023-09-01 07:20:49,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 103 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:20:49,916 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 168 flow [2023-09-01 07:20:49,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-09-01 07:20:49,917 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-09-01 07:20:49,917 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 168 flow [2023-09-01 07:20:49,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:49,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:49,918 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:20:49,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:20:50,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:50,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:50,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1599525583, now seen corresponding path program 2 times [2023-09-01 07:20:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048551286] [2023-09-01 07:20:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:50,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048551286] [2023-09-01 07:20:50,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048551286] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:50,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180286888] [2023-09-01 07:20:50,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:20:50,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:50,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:50,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:20:50,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:20:50,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:20:50,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:20:50,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:20:50,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:20:50,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:20:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180286888] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:50,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:20:50,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:20:50,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657598157] [2023-09-01 07:20:50,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:50,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:20:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:20:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:20:50,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-09-01 07:20:50,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:50,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-09-01 07:20:50,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:50,464 INFO L130 PetriNetUnfolder]: 451/757 cut-off events. [2023-09-01 07:20:50,464 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 07:20:50,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 757 events. 451/757 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3256 event pairs, 285 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1609. Up to 752 conditions per place. [2023-09-01 07:20:50,469 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 28 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-09-01 07:20:50,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 34 transitions, 226 flow [2023-09-01 07:20:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:20:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:20:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-09-01 07:20:50,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4655493482309125 [2023-09-01 07:20:50,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-09-01 07:20:50,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-09-01 07:20:50,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:50,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-09-01 07:20:50,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,476 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 168 flow. Second operand 3 states and 500 transitions. [2023-09-01 07:20:50,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 34 transitions, 226 flow [2023-09-01 07:20:50,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:20:50,481 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 151 flow [2023-09-01 07:20:50,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-09-01 07:20:50,483 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-09-01 07:20:50,483 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 151 flow [2023-09-01 07:20:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:50,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:20:50,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:20:50,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 07:20:50,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:50,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1597376419, now seen corresponding path program 1 times [2023-09-01 07:20:50,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:50,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259021707] [2023-09-01 07:20:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:50,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259021707] [2023-09-01 07:20:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259021707] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:50,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:20:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001085866] [2023-09-01 07:20:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:50,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:20:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:20:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:20:50,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-09-01 07:20:50,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:50,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-09-01 07:20:50,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:50,912 INFO L130 PetriNetUnfolder]: 751/1247 cut-off events. [2023-09-01 07:20:50,913 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-09-01 07:20:50,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1247 events. 751/1247 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5939 event pairs, 165 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 2614. Up to 781 conditions per place. [2023-09-01 07:20:50,919 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-09-01 07:20:50,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 274 flow [2023-09-01 07:20:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:20:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:20:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-09-01 07:20:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48417132216014896 [2023-09-01 07:20:50,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-09-01 07:20:50,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-09-01 07:20:50,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:50,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-09-01 07:20:50,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,927 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 151 flow. Second operand 3 states and 520 transitions. [2023-09-01 07:20:50,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 274 flow [2023-09-01 07:20:50,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:20:50,929 INFO L231 Difference]: Finished difference. Result has 34 places, 35 transitions, 153 flow [2023-09-01 07:20:50,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=34, PETRI_TRANSITIONS=35} [2023-09-01 07:20:50,930 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-09-01 07:20:50,931 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 35 transitions, 153 flow [2023-09-01 07:20:50,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:50,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:50,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:20:50,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:50,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2021009023, now seen corresponding path program 1 times [2023-09-01 07:20:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:50,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366646504] [2023-09-01 07:20:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:50,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:50,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366646504] [2023-09-01 07:20:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366646504] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:20:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388543710] [2023-09-01 07:20:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:50,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:20:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:50,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:20:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:20:50,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-09-01 07:20:50,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 35 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:50,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:50,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-09-01 07:20:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:51,178 INFO L130 PetriNetUnfolder]: 1071/1767 cut-off events. [2023-09-01 07:20:51,179 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2023-09-01 07:20:51,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1767 events. 1071/1767 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9203 event pairs, 235 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 3999. Up to 1141 conditions per place. [2023-09-01 07:20:51,189 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-09-01 07:20:51,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 281 flow [2023-09-01 07:20:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:20:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:20:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-09-01 07:20:51,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823091247672253 [2023-09-01 07:20:51,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-09-01 07:20:51,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-09-01 07:20:51,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:51,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-09-01 07:20:51,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:51,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:51,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:51,197 INFO L175 Difference]: Start difference. First operand has 34 places, 35 transitions, 153 flow. Second operand 3 states and 518 transitions. [2023-09-01 07:20:51,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 281 flow [2023-09-01 07:20:51,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:20:51,199 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 165 flow [2023-09-01 07:20:51,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-09-01 07:20:51,200 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-09-01 07:20:51,200 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 165 flow [2023-09-01 07:20:51,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:51,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:51,201 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:20:51,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:20:51,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:51,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2023979724, now seen corresponding path program 1 times [2023-09-01 07:20:51,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:51,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889294950] [2023-09-01 07:20:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:51,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:51,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:51,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889294950] [2023-09-01 07:20:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889294950] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:51,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548827331] [2023-09-01 07:20:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:51,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:51,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:51,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:20:51,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:20:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:51,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:20:51,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:51,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:20:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:51,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548827331] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:20:51,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:20:51,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:20:51,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245201385] [2023-09-01 07:20:51,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:20:51,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:20:51,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:51,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:20:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:20:51,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-09-01 07:20:51,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 165 flow. Second operand has 13 states, 13 states have (on average 158.15384615384616) internal successors, (2056), 13 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:51,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:51,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-09-01 07:20:51,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:52,166 INFO L130 PetriNetUnfolder]: 2355/3885 cut-off events. [2023-09-01 07:20:52,166 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-09-01 07:20:52,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 3885 events. 2355/3885 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 20852 event pairs, 1661 based on Foata normal form. 6/2828 useless extension candidates. Maximal degree in co-relation 9733. Up to 881 conditions per place. [2023-09-01 07:20:52,187 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 213 selfloop transitions, 31 changer transitions 0/244 dead transitions. [2023-09-01 07:20:52,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 244 transitions, 1345 flow [2023-09-01 07:20:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 07:20:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 07:20:52,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2112 transitions. [2023-09-01 07:20:52,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49162011173184356 [2023-09-01 07:20:52,193 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2112 transitions. [2023-09-01 07:20:52,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2112 transitions. [2023-09-01 07:20:52,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:52,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2112 transitions. [2023-09-01 07:20:52,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:52,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:52,205 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:52,205 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 165 flow. Second operand 12 states and 2112 transitions. [2023-09-01 07:20:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 244 transitions, 1345 flow [2023-09-01 07:20:52,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 244 transitions, 1333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:20:52,211 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 373 flow [2023-09-01 07:20:52,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=373, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-09-01 07:20:52,212 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-09-01 07:20:52,212 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 373 flow [2023-09-01 07:20:52,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 158.15384615384616) internal successors, (2056), 13 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:52,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:52,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:52,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:20:52,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:52,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:52,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1773228645, now seen corresponding path program 1 times [2023-09-01 07:20:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717917723] [2023-09-01 07:20:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717917723] [2023-09-01 07:20:52,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717917723] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762396031] [2023-09-01 07:20:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:52,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:20:52,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:20:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:52,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:20:52,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:52,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:20:52,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:20:52,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762396031] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:52,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:20:52,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-09-01 07:20:52,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268428618] [2023-09-01 07:20:52,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:52,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:20:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:20:52,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:20:52,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2023-09-01 07:20:52,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:52,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:52,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2023-09-01 07:20:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:53,359 INFO L130 PetriNetUnfolder]: 3070/5239 cut-off events. [2023-09-01 07:20:53,359 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2023-09-01 07:20:53,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12800 conditions, 5239 events. 3070/5239 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 31712 event pairs, 2178 based on Foata normal form. 220/4137 useless extension candidates. Maximal degree in co-relation 12777. Up to 3884 conditions per place. [2023-09-01 07:20:53,391 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 84 selfloop transitions, 4 changer transitions 8/96 dead transitions. [2023-09-01 07:20:53,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 770 flow [2023-09-01 07:20:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:20:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:20:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 812 transitions. [2023-09-01 07:20:53,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45363128491620114 [2023-09-01 07:20:53,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 812 transitions. [2023-09-01 07:20:53,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 812 transitions. [2023-09-01 07:20:53,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:53,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 812 transitions. [2023-09-01 07:20:53,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:53,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:53,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:53,402 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 373 flow. Second operand 5 states and 812 transitions. [2023-09-01 07:20:53,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 770 flow [2023-09-01 07:20:53,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 646 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 07:20:53,407 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 306 flow [2023-09-01 07:20:53,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-09-01 07:20:53,409 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-09-01 07:20:53,410 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 306 flow [2023-09-01 07:20:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:53,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:53,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:53,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:20:53,616 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 [2023-09-01 07:20:53,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:53,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1775351923, now seen corresponding path program 1 times [2023-09-01 07:20:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380319577] [2023-09-01 07:20:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:53,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:53,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380319577] [2023-09-01 07:20:53,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380319577] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:53,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:53,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:20:53,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411818951] [2023-09-01 07:20:53,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:53,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:20:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:20:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:20:53,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 358 [2023-09-01 07:20:53,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:53,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:53,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 358 [2023-09-01 07:20:53,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:54,206 INFO L130 PetriNetUnfolder]: 2454/4183 cut-off events. [2023-09-01 07:20:54,206 INFO L131 PetriNetUnfolder]: For 1800/1800 co-relation queries the response was YES. [2023-09-01 07:20:54,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10678 conditions, 4183 events. 2454/4183 cut-off events. For 1800/1800 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 24158 event pairs, 1760 based on Foata normal form. 0/3126 useless extension candidates. Maximal degree in co-relation 10653. Up to 3884 conditions per place. [2023-09-01 07:20:54,238 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 62 selfloop transitions, 4 changer transitions 18/84 dead transitions. [2023-09-01 07:20:54,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 599 flow [2023-09-01 07:20:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:20:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:20:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 802 transitions. [2023-09-01 07:20:54,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4480446927374302 [2023-09-01 07:20:54,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 802 transitions. [2023-09-01 07:20:54,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 802 transitions. [2023-09-01 07:20:54,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:54,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 802 transitions. [2023-09-01 07:20:54,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.4) internal successors, (802), 5 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,280 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 306 flow. Second operand 5 states and 802 transitions. [2023-09-01 07:20:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 599 flow [2023-09-01 07:20:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 593 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 07:20:54,287 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 315 flow [2023-09-01 07:20:54,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-09-01 07:20:54,288 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-09-01 07:20:54,288 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 315 flow [2023-09-01 07:20:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:54,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:54,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:20:54,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:54,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1031000096, now seen corresponding path program 1 times [2023-09-01 07:20:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:54,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416173602] [2023-09-01 07:20:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416173602] [2023-09-01 07:20:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416173602] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:54,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:20:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699669227] [2023-09-01 07:20:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:54,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:20:54,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:20:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:20:54,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2023-09-01 07:20:54,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:54,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2023-09-01 07:20:54,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:54,941 INFO L130 PetriNetUnfolder]: 2306/3955 cut-off events. [2023-09-01 07:20:54,941 INFO L131 PetriNetUnfolder]: For 2439/2439 co-relation queries the response was YES. [2023-09-01 07:20:54,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10658 conditions, 3955 events. 2306/3955 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23419 event pairs, 616 based on Foata normal form. 20/3282 useless extension candidates. Maximal degree in co-relation 10630. Up to 2281 conditions per place. [2023-09-01 07:20:54,965 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 61 selfloop transitions, 16 changer transitions 4/81 dead transitions. [2023-09-01 07:20:54,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 558 flow [2023-09-01 07:20:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:20:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:20:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-09-01 07:20:54,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463687150837989 [2023-09-01 07:20:54,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-09-01 07:20:54,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-09-01 07:20:54,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:54,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-09-01 07:20:54,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,977 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 315 flow. Second operand 5 states and 799 transitions. [2023-09-01 07:20:54,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 558 flow [2023-09-01 07:20:54,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 551 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:20:54,988 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 358 flow [2023-09-01 07:20:54,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-09-01 07:20:54,990 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 33 predicate places. [2023-09-01 07:20:54,990 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 358 flow [2023-09-01 07:20:54,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:54,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:54,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:54,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:20:54,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:54,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1033123352, now seen corresponding path program 1 times [2023-09-01 07:20:54,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:54,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029119848] [2023-09-01 07:20:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:20:55,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:55,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029119848] [2023-09-01 07:20:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029119848] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:20:55,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:20:55,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:20:55,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343029762] [2023-09-01 07:20:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:20:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:20:55,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:55,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:20:55,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:20:55,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2023-09-01 07:20:55,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:55,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:55,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2023-09-01 07:20:55,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:55,582 INFO L130 PetriNetUnfolder]: 2250/3859 cut-off events. [2023-09-01 07:20:55,582 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 07:20:55,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 3859 events. 2250/3859 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 22279 event pairs, 618 based on Foata normal form. 6/3185 useless extension candidates. Maximal degree in co-relation 10615. Up to 2221 conditions per place. [2023-09-01 07:20:55,609 INFO L137 encePairwiseOnDemand]: 352/358 looper letters, 53 selfloop transitions, 15 changer transitions 9/77 dead transitions. [2023-09-01 07:20:55,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 579 flow [2023-09-01 07:20:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:20:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:20:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-09-01 07:20:55,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446927374301676 [2023-09-01 07:20:55,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-09-01 07:20:55,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-09-01 07:20:55,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:55,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-09-01 07:20:55,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:55,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:55,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 358.0) internal successors, (2148), 6 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:55,620 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 358 flow. Second operand 5 states and 796 transitions. [2023-09-01 07:20:55,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 579 flow [2023-09-01 07:20:55,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 551 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 07:20:55,630 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 361 flow [2023-09-01 07:20:55,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-09-01 07:20:55,631 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 35 predicate places. [2023-09-01 07:20:55,631 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 361 flow [2023-09-01 07:20:55,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:55,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:55,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:55,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:20:55,632 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:55,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 866507716, now seen corresponding path program 1 times [2023-09-01 07:20:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315726234] [2023-09-01 07:20:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:20:55,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:55,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315726234] [2023-09-01 07:20:55,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315726234] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:55,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145605395] [2023-09-01 07:20:55,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:55,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:55,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:20:55,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:20:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:55,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:20:55,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:55,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:20:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145605395] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:20:55,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:20:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2023-09-01 07:20:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955624736] [2023-09-01 07:20:55,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:20:55,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:20:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:20:55,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:20:56,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 358 [2023-09-01 07:20:56,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 361 flow. Second operand has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:56,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:56,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 358 [2023-09-01 07:20:56,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:56,674 INFO L130 PetriNetUnfolder]: 1860/3215 cut-off events. [2023-09-01 07:20:56,674 INFO L131 PetriNetUnfolder]: For 2467/2467 co-relation queries the response was YES. [2023-09-01 07:20:56,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8881 conditions, 3215 events. 1860/3215 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 18532 event pairs, 560 based on Foata normal form. 20/2819 useless extension candidates. Maximal degree in co-relation 8852. Up to 1584 conditions per place. [2023-09-01 07:20:56,690 INFO L137 encePairwiseOnDemand]: 350/358 looper letters, 65 selfloop transitions, 19 changer transitions 8/92 dead transitions. [2023-09-01 07:20:56,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 92 transitions, 677 flow [2023-09-01 07:20:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:20:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:20:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1377 transitions. [2023-09-01 07:20:56,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273743016759777 [2023-09-01 07:20:56,695 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1377 transitions. [2023-09-01 07:20:56,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1377 transitions. [2023-09-01 07:20:56,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:56,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1377 transitions. [2023-09-01 07:20:56,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:56,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 358.0) internal successors, (3580), 10 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:56,703 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 358.0) internal successors, (3580), 10 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:56,703 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 361 flow. Second operand 9 states and 1377 transitions. [2023-09-01 07:20:56,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 92 transitions, 677 flow [2023-09-01 07:20:56,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 636 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-09-01 07:20:56,710 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 393 flow [2023-09-01 07:20:56,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2023-09-01 07:20:56,711 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-09-01 07:20:56,711 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 393 flow [2023-09-01 07:20:56,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:56,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:56,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:56,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:20:56,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 07:20:56,918 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:56,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 864384460, now seen corresponding path program 1 times [2023-09-01 07:20:56,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:56,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120997087] [2023-09-01 07:20:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:56,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:57,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:57,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120997087] [2023-09-01 07:20:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120997087] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745912373] [2023-09-01 07:20:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:57,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:57,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:57,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:20:57,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:20:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:57,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:20:57,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:57,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:20:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:20:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745912373] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:20:57,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:20:57,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-09-01 07:20:57,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524314990] [2023-09-01 07:20:57,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:20:57,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 07:20:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 07:20:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:20:57,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 358 [2023-09-01 07:20:57,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 393 flow. Second operand has 15 states, 15 states have (on average 145.73333333333332) internal successors, (2186), 15 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:57,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:57,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 358 [2023-09-01 07:20:57,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:58,396 INFO L130 PetriNetUnfolder]: 2561/4514 cut-off events. [2023-09-01 07:20:58,396 INFO L131 PetriNetUnfolder]: For 3154/3154 co-relation queries the response was YES. [2023-09-01 07:20:58,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 4514 events. 2561/4514 cut-off events. For 3154/3154 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 27832 event pairs, 1479 based on Foata normal form. 128/4318 useless extension candidates. Maximal degree in co-relation 12283. Up to 2441 conditions per place. [2023-09-01 07:20:58,420 INFO L137 encePairwiseOnDemand]: 348/358 looper letters, 70 selfloop transitions, 24 changer transitions 66/160 dead transitions. [2023-09-01 07:20:58,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 160 transitions, 1161 flow [2023-09-01 07:20:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 07:20:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 07:20:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3289 transitions. [2023-09-01 07:20:58,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175977653631285 [2023-09-01 07:20:58,429 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3289 transitions. [2023-09-01 07:20:58,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3289 transitions. [2023-09-01 07:20:58,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:58,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3289 transitions. [2023-09-01 07:20:58,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 149.5) internal successors, (3289), 22 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:58,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:58,455 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 358.0) internal successors, (8234), 23 states have internal predecessors, (8234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:58,456 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 393 flow. Second operand 22 states and 3289 transitions. [2023-09-01 07:20:58,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 160 transitions, 1161 flow [2023-09-01 07:20:58,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 160 transitions, 1112 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-09-01 07:20:58,472 INFO L231 Difference]: Finished difference. Result has 87 places, 59 transitions, 484 flow [2023-09-01 07:20:58,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=484, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2023-09-01 07:20:58,473 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 60 predicate places. [2023-09-01 07:20:58,473 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 484 flow [2023-09-01 07:20:58,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 145.73333333333332) internal successors, (2186), 15 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:58,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:58,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:58,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:20:58,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:58,680 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:20:58,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:20:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash 798771196, now seen corresponding path program 1 times [2023-09-01 07:20:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:20:58,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128223299] [2023-09-01 07:20:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:58,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:20:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:20:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:20:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128223299] [2023-09-01 07:20:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128223299] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:20:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420656589] [2023-09-01 07:20:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:20:58,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:20:58,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:20:58,768 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) [2023-09-01 07:20:58,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:20:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:20:58,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:20:58,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:20:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:20:58,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:20:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:20:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420656589] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:20:58,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:20:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:20:58,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949106920] [2023-09-01 07:20:58,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:20:58,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:20:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:20:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:20:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:20:58,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2023-09-01 07:20:58,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:58,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:20:58,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2023-09-01 07:20:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:20:59,789 INFO L130 PetriNetUnfolder]: 4998/8528 cut-off events. [2023-09-01 07:20:59,790 INFO L131 PetriNetUnfolder]: For 10857/10857 co-relation queries the response was YES. [2023-09-01 07:20:59,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25826 conditions, 8528 events. 4998/8528 cut-off events. For 10857/10857 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 57045 event pairs, 711 based on Foata normal form. 648/8960 useless extension candidates. Maximal degree in co-relation 25791. Up to 2260 conditions per place. [2023-09-01 07:20:59,846 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 101 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2023-09-01 07:20:59,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 910 flow [2023-09-01 07:20:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:20:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:20:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1029 transitions. [2023-09-01 07:20:59,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790502793296089 [2023-09-01 07:20:59,852 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1029 transitions. [2023-09-01 07:20:59,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1029 transitions. [2023-09-01 07:20:59,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:20:59,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1029 transitions. [2023-09-01 07:20:59,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.5) internal successors, (1029), 6 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) [2023-09-01 07:20:59,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:59,858 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:59,858 INFO L175 Difference]: Start difference. First operand has 87 places, 59 transitions, 484 flow. Second operand 6 states and 1029 transitions. [2023-09-01 07:20:59,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 910 flow [2023-09-01 07:20:59,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 802 flow, removed 31 selfloop flow, removed 13 redundant places. [2023-09-01 07:20:59,895 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 450 flow [2023-09-01 07:20:59,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-09-01 07:20:59,896 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 48 predicate places. [2023-09-01 07:20:59,896 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 450 flow [2023-09-01 07:20:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 165.14285714285714) internal successors, (1156), 7 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:20:59,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:20:59,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:20:59,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:00,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:00,103 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:21:00,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash 796647939, now seen corresponding path program 2 times [2023-09-01 07:21:00,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:00,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730674258] [2023-09-01 07:21:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:00,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 07:21:00,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:00,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730674258] [2023-09-01 07:21:00,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730674258] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:00,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76935277] [2023-09-01 07:21:00,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:21:00,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:00,182 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) [2023-09-01 07:21:00,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:21:00,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:21:00,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:00,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:21:00,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:21:00,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:21:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 07:21:00,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76935277] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:21:00,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:21:00,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 07:21:00,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959602068] [2023-09-01 07:21:00,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:21:00,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:21:00,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:00,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:21:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:21:00,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-09-01 07:21:00,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:00,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:00,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-09-01 07:21:00,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:01,429 INFO L130 PetriNetUnfolder]: 6393/10859 cut-off events. [2023-09-01 07:21:01,430 INFO L131 PetriNetUnfolder]: For 16268/16268 co-relation queries the response was YES. [2023-09-01 07:21:01,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31605 conditions, 10859 events. 6393/10859 cut-off events. For 16268/16268 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 74319 event pairs, 1647 based on Foata normal form. 324/11183 useless extension candidates. Maximal degree in co-relation 31574. Up to 3965 conditions per place. [2023-09-01 07:21:01,459 INFO L137 encePairwiseOnDemand]: 353/358 looper letters, 40 selfloop transitions, 1 changer transitions 61/102 dead transitions. [2023-09-01 07:21:01,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 832 flow [2023-09-01 07:21:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:21:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:21:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2023-09-01 07:21:01,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46694599627560524 [2023-09-01 07:21:01,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1003 transitions. [2023-09-01 07:21:01,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1003 transitions. [2023-09-01 07:21:01,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:01,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1003 transitions. [2023-09-01 07:21:01,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.16666666666666) internal successors, (1003), 6 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:01,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:01,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:01,469 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 450 flow. Second operand 6 states and 1003 transitions. [2023-09-01 07:21:01,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 832 flow [2023-09-01 07:21:01,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 766 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-09-01 07:21:01,505 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 343 flow [2023-09-01 07:21:01,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2023-09-01 07:21:01,506 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2023-09-01 07:21:01,506 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 343 flow [2023-09-01 07:21:01,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:01,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:21:01,506 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-09-01 07:21:01,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:01,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 07:21:01,712 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:21:01,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:21:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1942080116, now seen corresponding path program 2 times [2023-09-01 07:21:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:21:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950847415] [2023-09-01 07:21:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:21:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:21:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:21:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:21:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:21:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950847415] [2023-09-01 07:21:01,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950847415] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:21:01,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309288540] [2023-09-01 07:21:01,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:21:01,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:21:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:01,921 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) [2023-09-01 07:21:01,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:21:02,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:21:02,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:21:02,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:21:02,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:21:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 07:21:02,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:21:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309288540] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:21:02,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:21:02,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-09-01 07:21:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3083098] [2023-09-01 07:21:02,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:21:02,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:21:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:21:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:21:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:21:02,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 358 [2023-09-01 07:21:02,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:02,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:21:02,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 358 [2023-09-01 07:21:02,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:21:02,099 INFO L130 PetriNetUnfolder]: 12/56 cut-off events. [2023-09-01 07:21:02,099 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2023-09-01 07:21:02,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 56 events. 12/56 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 230. Up to 56 conditions per place. [2023-09-01 07:21:02,100 INFO L137 encePairwiseOnDemand]: 356/358 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-09-01 07:21:02,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 346 flow [2023-09-01 07:21:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:21:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:21:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-09-01 07:21:02,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44320297951582865 [2023-09-01 07:21:02,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-09-01 07:21:02,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-09-01 07:21:02,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:21:02,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-09-01 07:21:02,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:02,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:02,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:02,106 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 343 flow. Second operand 3 states and 476 transitions. [2023-09-01 07:21:02,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 346 flow [2023-09-01 07:21:02,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 229 flow, removed 2 selfloop flow, removed 19 redundant places. [2023-09-01 07:21:02,108 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-09-01 07:21:02,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-09-01 07:21:02,109 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-09-01 07:21:02,109 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-09-01 07:21:02,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:21:02,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-09-01 07:21:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-09-01 07:21:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-09-01 07:21:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-09-01 07:21:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-09-01 07:21:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-09-01 07:21:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-09-01 07:21:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-09-01 07:21:02,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:21:02,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 07:21:02,320 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:21:02,325 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:21:02,325 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:21:02,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:21:02 BasicIcfg [2023-09-01 07:21:02,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:21:02,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:21:02,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:21:02,329 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:21:02,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:20:43" (3/4) ... [2023-09-01 07:21:02,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:21:02,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:21:02,338 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:21:02,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 07:21:02,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:21:02,344 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:21:02,344 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:21:02,387 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:21:02,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:21:02,387 INFO L158 Benchmark]: Toolchain (without parser) took 19871.89ms. Allocated memory was 102.8MB in the beginning and 903.9MB in the end (delta: 801.1MB). Free memory was 80.9MB in the beginning and 540.0MB in the end (delta: -459.2MB). Peak memory consumption was 343.3MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,388 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:21:02,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.62ms. Allocated memory is still 102.8MB. Free memory was 80.6MB in the beginning and 69.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.21ms. Allocated memory is still 102.8MB. Free memory was 69.7MB in the beginning and 67.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,388 INFO L158 Benchmark]: Boogie Preprocessor took 26.52ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 66.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,389 INFO L158 Benchmark]: RCFGBuilder took 607.31ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 77.7MB in the end (delta: -11.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,389 INFO L158 Benchmark]: TraceAbstraction took 18935.27ms. Allocated memory was 102.8MB in the beginning and 903.9MB in the end (delta: 801.1MB). Free memory was 77.2MB in the beginning and 544.2MB in the end (delta: -467.0MB). Peak memory consumption was 336.7MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,389 INFO L158 Benchmark]: Witness Printer took 58.21ms. Allocated memory is still 903.9MB. Free memory was 544.2MB in the beginning and 540.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:21:02,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.62ms. Allocated memory is still 102.8MB. Free memory was 80.6MB in the beginning and 69.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.21ms. Allocated memory is still 102.8MB. Free memory was 69.7MB in the beginning and 67.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.52ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 66.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.31ms. Allocated memory is still 102.8MB. Free memory was 66.2MB in the beginning and 77.7MB in the end (delta: -11.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18935.27ms. Allocated memory was 102.8MB in the beginning and 903.9MB in the end (delta: 801.1MB). Free memory was 77.2MB in the beginning and 544.2MB in the end (delta: -467.0MB). Peak memory consumption was 336.7MB. Max. memory is 16.1GB. * Witness Printer took 58.21ms. Allocated memory is still 903.9MB. Free memory was 544.2MB in the beginning and 540.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 152 PlacesBefore, 27 PlacesAfterwards, 159 TransitionsBefore, 25 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 101 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 181 TotalNumberOfCompositions, 1963 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1618, independent: 1560, independent conditional: 0, independent unconditional: 1560, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 817, independent: 804, independent conditional: 0, independent unconditional: 804, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1618, independent: 756, independent conditional: 0, independent unconditional: 756, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 817, unknown conditional: 0, unknown unconditional: 817] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 201 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.8s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2777 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2267 mSDsluCounter, 579 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 411 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3489 IncrementalHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 168 mSDtfsCounter, 3489 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=484occurred in iteration=13, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 206 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 911 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1362 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 126/239 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:21:02,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE