/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:47:58,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:47:58,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:47:58,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:47:58,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:47:58,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:47:58,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:47:58,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:47:58,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:47:58,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:47:58,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:47:58,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:47:58,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:47:58,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:47:58,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:47:58,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:47:58,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:47:58,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:47:58,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:47:58,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:47:58,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:47:58,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:47:58,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:47:58,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:47:58,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:47:58,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:47:58,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:47:58,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:47:58,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:47:58,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:47:58,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:47:58,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:47:58,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:47:58,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:47:58,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:47:58,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:47:58,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:47:58,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:47:58,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:47:58,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:47:58,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:47:58,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:47:58,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:47:58,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:47:58,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:47:58,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:47:58,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:47:58,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:47:58,736 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:47:58,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:47:58,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:47:58,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:47:58,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:47:58,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:47:58,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:47:58,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:47:58,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:47:58,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:47:58,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:58,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:47:58,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:47:58,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:47:58,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:47:58,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:47:58,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:47:58,949 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:47:58,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-09-16 11:47:58,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1418ec482/a8ada7dbef0a407f9f9c901e2cb53378/FLAG965950458 [2022-09-16 11:47:59,368 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:47:59,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-09-16 11:47:59,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1418ec482/a8ada7dbef0a407f9f9c901e2cb53378/FLAG965950458 [2022-09-16 11:47:59,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1418ec482/a8ada7dbef0a407f9f9c901e2cb53378 [2022-09-16 11:47:59,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:47:59,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:47:59,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:59,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:47:59,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:47:59,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477d4816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59, skipping insertion in model container [2022-09-16 11:47:59,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:47:59,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:47:59,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-09-16 11:47:59,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:59,616 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:47:59,646 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-09-16 11:47:59,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:47:59,666 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:47:59,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59 WrapperNode [2022-09-16 11:47:59,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:47:59,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:59,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:47:59,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:47:59,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,708 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 164 [2022-09-16 11:47:59,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:47:59,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:47:59,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:47:59,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:47:59,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:47:59,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:47:59,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:47:59,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:47:59,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (1/1) ... [2022-09-16 11:47:59,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:47:59,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:59,765 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) [2022-09-16 11:47:59,788 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 [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:47:59,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:47:59,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:47:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:47:59,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:47:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:47:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:47:59,802 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:47:59,871 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:47:59,872 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:48:00,091 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:48:00,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:48:00,162 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:48:00,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:48:00 BoogieIcfgContainer [2022-09-16 11:48:00,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:48:00,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:48:00,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:48:00,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:48:00,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:47:59" (1/3) ... [2022-09-16 11:48:00,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a16569d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:48:00, skipping insertion in model container [2022-09-16 11:48:00,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:47:59" (2/3) ... [2022-09-16 11:48:00,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a16569d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:48:00, skipping insertion in model container [2022-09-16 11:48:00,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:48:00" (3/3) ... [2022-09-16 11:48:00,171 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-09-16 11:48:00,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:48:00,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:48:00,182 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:48:00,235 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:48:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 115 transitions, 246 flow [2022-09-16 11:48:00,299 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2022-09-16 11:48:00,299 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:48:00,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 2/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-09-16 11:48:00,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 115 transitions, 246 flow [2022-09-16 11:48:00,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 94 transitions, 197 flow [2022-09-16 11:48:00,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:48:00,330 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=false, 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;@765a931b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:48:00,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 11:48:00,348 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-09-16 11:48:00,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:48:00,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:00,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:00,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash 708399990, now seen corresponding path program 1 times [2022-09-16 11:48:00,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:00,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425310943] [2022-09-16 11:48:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425310943] [2022-09-16 11:48:00,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425310943] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:00,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:00,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608002927] [2022-09-16 11:48:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:00,662 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 115 [2022-09-16 11:48:00,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:00,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 115 [2022-09-16 11:48:00,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:00,844 INFO L130 PetriNetUnfolder]: 99/371 cut-off events. [2022-09-16 11:48:00,844 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-09-16 11:48:00,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 371 events. 99/371 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1709 event pairs, 53 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 501. Up to 134 conditions per place. [2022-09-16 11:48:00,849 INFO L137 encePairwiseOnDemand]: 99/115 looper letters, 35 selfloop transitions, 14 changer transitions 1/113 dead transitions. [2022-09-16 11:48:00,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 344 flow [2022-09-16 11:48:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:48:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:48:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 510 transitions. [2022-09-16 11:48:00,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2022-09-16 11:48:00,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 510 transitions. [2022-09-16 11:48:00,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 510 transitions. [2022-09-16 11:48:00,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:00,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 510 transitions. [2022-09-16 11:48:00,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,877 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,878 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 197 flow. Second operand 6 states and 510 transitions. [2022-09-16 11:48:00,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 344 flow [2022-09-16 11:48:00,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 113 transitions, 335 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:48:00,883 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 272 flow [2022-09-16 11:48:00,884 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2022-09-16 11:48:00,886 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2022-09-16 11:48:00,887 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 272 flow [2022-09-16 11:48:00,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:00,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:48:00,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash 708399991, now seen corresponding path program 1 times [2022-09-16 11:48:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:00,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107672535] [2022-09-16 11:48:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:00,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:00,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107672535] [2022-09-16 11:48:00,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107672535] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:00,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:00,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460047222] [2022-09-16 11:48:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:00,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 115 [2022-09-16 11:48:00,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:00,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:00,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 115 [2022-09-16 11:48:00,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:01,082 INFO L130 PetriNetUnfolder]: 78/307 cut-off events. [2022-09-16 11:48:01,082 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-09-16 11:48:01,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 307 events. 78/307 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1269 event pairs, 62 based on Foata normal form. 24/299 useless extension candidates. Maximal degree in co-relation 493. Up to 184 conditions per place. [2022-09-16 11:48:01,092 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 28 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2022-09-16 11:48:01,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 320 flow [2022-09-16 11:48:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:48:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:48:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2022-09-16 11:48:01,095 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7405797101449275 [2022-09-16 11:48:01,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 511 transitions. [2022-09-16 11:48:01,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 511 transitions. [2022-09-16 11:48:01,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:01,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 511 transitions. [2022-09-16 11:48:01,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,101 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 272 flow. Second operand 6 states and 511 transitions. [2022-09-16 11:48:01,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 320 flow [2022-09-16 11:48:01,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 309 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:48:01,104 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 253 flow [2022-09-16 11:48:01,104 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2022-09-16 11:48:01,105 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2022-09-16 11:48:01,105 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 253 flow [2022-09-16 11:48:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:01,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:01,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:48:01,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash -712841091, now seen corresponding path program 1 times [2022-09-16 11:48:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:01,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174270121] [2022-09-16 11:48:01,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:01,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:01,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174270121] [2022-09-16 11:48:01,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174270121] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:01,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:01,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024678016] [2022-09-16 11:48:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:01,200 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2022-09-16 11:48:01,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 77.5) internal successors, (465), 6 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:01,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2022-09-16 11:48:01,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:01,320 INFO L130 PetriNetUnfolder]: 82/358 cut-off events. [2022-09-16 11:48:01,320 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-09-16 11:48:01,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 358 events. 82/358 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1599 event pairs, 29 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 642. Up to 93 conditions per place. [2022-09-16 11:48:01,323 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 48 selfloop transitions, 12 changer transitions 4/127 dead transitions. [2022-09-16 11:48:01,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 127 transitions, 475 flow [2022-09-16 11:48:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2022-09-16 11:48:01,325 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7254658385093168 [2022-09-16 11:48:01,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2022-09-16 11:48:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2022-09-16 11:48:01,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:01,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2022-09-16 11:48:01,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,331 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,331 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 253 flow. Second operand 7 states and 584 transitions. [2022-09-16 11:48:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 127 transitions, 475 flow [2022-09-16 11:48:01,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 127 transitions, 463 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:48:01,337 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 299 flow [2022-09-16 11:48:01,338 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2022-09-16 11:48:01,339 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2022-09-16 11:48:01,339 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 299 flow [2022-09-16 11:48:01,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.5) internal successors, (465), 6 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:01,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:01,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:48:01,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:01,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -712841090, now seen corresponding path program 1 times [2022-09-16 11:48:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:01,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755556609] [2022-09-16 11:48:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755556609] [2022-09-16 11:48:01,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755556609] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:01,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:01,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:48:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263252361] [2022-09-16 11:48:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:01,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:48:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:48:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:48:01,429 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 115 [2022-09-16 11:48:01,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:01,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 115 [2022-09-16 11:48:01,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:01,543 INFO L130 PetriNetUnfolder]: 72/299 cut-off events. [2022-09-16 11:48:01,544 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-09-16 11:48:01,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 299 events. 72/299 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1199 event pairs, 34 based on Foata normal form. 12/303 useless extension candidates. Maximal degree in co-relation 517. Up to 112 conditions per place. [2022-09-16 11:48:01,546 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 33 selfloop transitions, 7 changer transitions 1/104 dead transitions. [2022-09-16 11:48:01,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 393 flow [2022-09-16 11:48:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:48:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:48:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2022-09-16 11:48:01,548 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.76 [2022-09-16 11:48:01,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2022-09-16 11:48:01,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2022-09-16 11:48:01,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:01,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2022-09-16 11:48:01,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,550 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,551 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 299 flow. Second operand 5 states and 437 transitions. [2022-09-16 11:48:01,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 393 flow [2022-09-16 11:48:01,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 377 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:48:01,555 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 282 flow [2022-09-16 11:48:01,555 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2022-09-16 11:48:01,557 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2022-09-16 11:48:01,557 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 282 flow [2022-09-16 11:48:01,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:01,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:01,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:48:01,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:01,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1165292114, now seen corresponding path program 1 times [2022-09-16 11:48:01,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:01,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419202562] [2022-09-16 11:48:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:01,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419202562] [2022-09-16 11:48:01,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419202562] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:01,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:01,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:48:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040293365] [2022-09-16 11:48:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:01,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:48:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:48:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:48:01,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-09-16 11:48:01,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:01,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-09-16 11:48:01,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:01,746 INFO L130 PetriNetUnfolder]: 86/363 cut-off events. [2022-09-16 11:48:01,746 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-09-16 11:48:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 363 events. 86/363 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1737 event pairs, 4 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 477. Up to 85 conditions per place. [2022-09-16 11:48:01,749 INFO L137 encePairwiseOnDemand]: 105/115 looper letters, 48 selfloop transitions, 20 changer transitions 0/135 dead transitions. [2022-09-16 11:48:01,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 551 flow [2022-09-16 11:48:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:48:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:48:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 489 transitions. [2022-09-16 11:48:01,750 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8504347826086956 [2022-09-16 11:48:01,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 489 transitions. [2022-09-16 11:48:01,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 489 transitions. [2022-09-16 11:48:01,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:01,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 489 transitions. [2022-09-16 11:48:01,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.8) internal successors, (489), 5 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) [2022-09-16 11:48:01,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,753 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,753 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 282 flow. Second operand 5 states and 489 transitions. [2022-09-16 11:48:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 551 flow [2022-09-16 11:48:01,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 135 transitions, 530 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:48:01,757 INFO L231 Difference]: Finished difference. Result has 109 places, 109 transitions, 410 flow [2022-09-16 11:48:01,757 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=109, PETRI_TRANSITIONS=109} [2022-09-16 11:48:01,759 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2022-09-16 11:48:01,759 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 109 transitions, 410 flow [2022-09-16 11:48:01,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:01,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:48:01,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash -773117782, now seen corresponding path program 2 times [2022-09-16 11:48:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:01,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383301629] [2022-09-16 11:48:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:01,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383301629] [2022-09-16 11:48:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383301629] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:01,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:01,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:48:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947809919] [2022-09-16 11:48:01,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:48:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:48:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:48:01,854 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 115 [2022-09-16 11:48:01,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 109 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:01,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 115 [2022-09-16 11:48:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:01,955 INFO L130 PetriNetUnfolder]: 101/432 cut-off events. [2022-09-16 11:48:01,955 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-09-16 11:48:01,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 432 events. 101/432 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2292 event pairs, 41 based on Foata normal form. 8/438 useless extension candidates. Maximal degree in co-relation 589. Up to 165 conditions per place. [2022-09-16 11:48:01,958 INFO L137 encePairwiseOnDemand]: 104/115 looper letters, 45 selfloop transitions, 16 changer transitions 0/125 dead transitions. [2022-09-16 11:48:01,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 125 transitions, 589 flow [2022-09-16 11:48:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 580 transitions. [2022-09-16 11:48:01,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7204968944099379 [2022-09-16 11:48:01,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 580 transitions. [2022-09-16 11:48:01,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 580 transitions. [2022-09-16 11:48:01,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:01,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 580 transitions. [2022-09-16 11:48:01,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,964 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,964 INFO L175 Difference]: Start difference. First operand has 109 places, 109 transitions, 410 flow. Second operand 7 states and 580 transitions. [2022-09-16 11:48:01,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 125 transitions, 589 flow [2022-09-16 11:48:01,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 125 transitions, 587 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-09-16 11:48:01,968 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 468 flow [2022-09-16 11:48:01,968 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2022-09-16 11:48:01,970 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 16 predicate places. [2022-09-16 11:48:01,970 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 468 flow [2022-09-16 11:48:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:01,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:01,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:01,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:48:01,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1164727154, now seen corresponding path program 1 times [2022-09-16 11:48:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:01,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202816686] [2022-09-16 11:48:01,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:02,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202816686] [2022-09-16 11:48:02,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202816686] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:02,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:02,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:48:02,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300645640] [2022-09-16 11:48:02,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:02,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:48:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:02,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:48:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:48:02,083 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 115 [2022-09-16 11:48:02,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:02,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 115 [2022-09-16 11:48:02,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:02,208 INFO L130 PetriNetUnfolder]: 113/469 cut-off events. [2022-09-16 11:48:02,208 INFO L131 PetriNetUnfolder]: For 479/479 co-relation queries the response was YES. [2022-09-16 11:48:02,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 469 events. 113/469 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2635 event pairs, 20 based on Foata normal form. 6/474 useless extension candidates. Maximal degree in co-relation 819. Up to 131 conditions per place. [2022-09-16 11:48:02,211 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 42 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2022-09-16 11:48:02,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 127 transitions, 635 flow [2022-09-16 11:48:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-09-16 11:48:02,212 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7229813664596273 [2022-09-16 11:48:02,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-09-16 11:48:02,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-09-16 11:48:02,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:02,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-09-16 11:48:02,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,215 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,215 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 468 flow. Second operand 7 states and 582 transitions. [2022-09-16 11:48:02,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 127 transitions, 635 flow [2022-09-16 11:48:02,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 627 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-16 11:48:02,219 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 523 flow [2022-09-16 11:48:02,219 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2022-09-16 11:48:02,220 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 21 predicate places. [2022-09-16 11:48:02,220 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 523 flow [2022-09-16 11:48:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.0) internal successors, (546), 7 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:02,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:02,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:48:02,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1702767171, now seen corresponding path program 1 times [2022-09-16 11:48:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:02,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044280079] [2022-09-16 11:48:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:02,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:02,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044280079] [2022-09-16 11:48:02,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044280079] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:02,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:02,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:48:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512271685] [2022-09-16 11:48:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:48:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:48:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:48:02,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2022-09-16 11:48:02,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:02,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2022-09-16 11:48:02,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:02,373 INFO L130 PetriNetUnfolder]: 145/524 cut-off events. [2022-09-16 11:48:02,373 INFO L131 PetriNetUnfolder]: For 840/840 co-relation queries the response was YES. [2022-09-16 11:48:02,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 524 events. 145/524 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2952 event pairs, 55 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1208. Up to 126 conditions per place. [2022-09-16 11:48:02,376 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 50 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2022-09-16 11:48:02,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 133 transitions, 769 flow [2022-09-16 11:48:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:48:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:48:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 572 transitions. [2022-09-16 11:48:02,378 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7105590062111802 [2022-09-16 11:48:02,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 572 transitions. [2022-09-16 11:48:02,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 572 transitions. [2022-09-16 11:48:02,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:02,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 572 transitions. [2022-09-16 11:48:02,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,381 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,382 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 523 flow. Second operand 7 states and 572 transitions. [2022-09-16 11:48:02,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 133 transitions, 769 flow [2022-09-16 11:48:02,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 757 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-16 11:48:02,386 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 573 flow [2022-09-16 11:48:02,386 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2022-09-16 11:48:02,387 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 28 predicate places. [2022-09-16 11:48:02,388 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 573 flow [2022-09-16 11:48:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:02,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:02,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:48:02,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1702767172, now seen corresponding path program 1 times [2022-09-16 11:48:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:02,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652280365] [2022-09-16 11:48:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:02,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:02,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652280365] [2022-09-16 11:48:02,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652280365] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:02,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:48:02,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138185971] [2022-09-16 11:48:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:02,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:48:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:02,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:48:02,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:48:02,427 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 115 [2022-09-16 11:48:02,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 573 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:02,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 115 [2022-09-16 11:48:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:02,504 INFO L130 PetriNetUnfolder]: 113/452 cut-off events. [2022-09-16 11:48:02,504 INFO L131 PetriNetUnfolder]: For 836/836 co-relation queries the response was YES. [2022-09-16 11:48:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 452 events. 113/452 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2456 event pairs, 65 based on Foata normal form. 34/479 useless extension candidates. Maximal degree in co-relation 1151. Up to 184 conditions per place. [2022-09-16 11:48:02,507 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 39 selfloop transitions, 7 changer transitions 2/119 dead transitions. [2022-09-16 11:48:02,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 699 flow [2022-09-16 11:48:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:48:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:48:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2022-09-16 11:48:02,508 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7513043478260869 [2022-09-16 11:48:02,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2022-09-16 11:48:02,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2022-09-16 11:48:02,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:02,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2022-09-16 11:48:02,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,511 INFO L175 Difference]: Start difference. First operand has 128 places, 114 transitions, 573 flow. Second operand 5 states and 432 transitions. [2022-09-16 11:48:02,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 699 flow [2022-09-16 11:48:02,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 119 transitions, 683 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:48:02,515 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 554 flow [2022-09-16 11:48:02,515 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2022-09-16 11:48:02,516 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2022-09-16 11:48:02,516 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 554 flow [2022-09-16 11:48:02,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:02,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:02,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:48:02,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1912200585, now seen corresponding path program 1 times [2022-09-16 11:48:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:02,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589225508] [2022-09-16 11:48:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:02,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:02,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589225508] [2022-09-16 11:48:02,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589225508] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:02,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:02,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655213295] [2022-09-16 11:48:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:02,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:02,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:02,575 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 115 [2022-09-16 11:48:02,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 554 flow. Second operand has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:02,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 115 [2022-09-16 11:48:02,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:02,698 INFO L130 PetriNetUnfolder]: 112/432 cut-off events. [2022-09-16 11:48:02,698 INFO L131 PetriNetUnfolder]: For 831/831 co-relation queries the response was YES. [2022-09-16 11:48:02,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 432 events. 112/432 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2287 event pairs, 37 based on Foata normal form. 8/436 useless extension candidates. Maximal degree in co-relation 1093. Up to 98 conditions per place. [2022-09-16 11:48:02,700 INFO L137 encePairwiseOnDemand]: 101/115 looper letters, 33 selfloop transitions, 11 changer transitions 32/135 dead transitions. [2022-09-16 11:48:02,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 839 flow [2022-09-16 11:48:02,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:48:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:48:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 914 transitions. [2022-09-16 11:48:02,703 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6623188405797101 [2022-09-16 11:48:02,703 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 914 transitions. [2022-09-16 11:48:02,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 914 transitions. [2022-09-16 11:48:02,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:02,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 914 transitions. [2022-09-16 11:48:02,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.16666666666667) internal successors, (914), 12 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,707 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,707 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 554 flow. Second operand 12 states and 914 transitions. [2022-09-16 11:48:02,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 839 flow [2022-09-16 11:48:02,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 135 transitions, 815 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:48:02,711 INFO L231 Difference]: Finished difference. Result has 130 places, 93 transitions, 433 flow [2022-09-16 11:48:02,712 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=433, PETRI_PLACES=130, PETRI_TRANSITIONS=93} [2022-09-16 11:48:02,713 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 30 predicate places. [2022-09-16 11:48:02,713 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 93 transitions, 433 flow [2022-09-16 11:48:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:48:02,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:48:02,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:48:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:48:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1200054747, now seen corresponding path program 1 times [2022-09-16 11:48:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:48:02,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898263842] [2022-09-16 11:48:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:48:02,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:48:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:48:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:48:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:48:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898263842] [2022-09-16 11:48:02,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898263842] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:48:02,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:48:02,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:48:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154554181] [2022-09-16 11:48:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:48:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:48:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:48:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:48:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:48:02,796 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 115 [2022-09-16 11:48:02,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 93 transitions, 433 flow. Second operand has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:48:02,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 115 [2022-09-16 11:48:02,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:48:02,878 INFO L130 PetriNetUnfolder]: 63/267 cut-off events. [2022-09-16 11:48:02,878 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2022-09-16 11:48:02,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 267 events. 63/267 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1062 event pairs, 33 based on Foata normal form. 5/270 useless extension candidates. Maximal degree in co-relation 700. Up to 98 conditions per place. [2022-09-16 11:48:02,879 INFO L137 encePairwiseOnDemand]: 102/115 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2022-09-16 11:48:02,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 102 transitions, 577 flow [2022-09-16 11:48:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:48:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:48:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 896 transitions. [2022-09-16 11:48:02,881 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6492753623188405 [2022-09-16 11:48:02,881 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 896 transitions. [2022-09-16 11:48:02,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 896 transitions. [2022-09-16 11:48:02,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:48:02,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 896 transitions. [2022-09-16 11:48:02,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.66666666666667) internal successors, (896), 12 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,885 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,885 INFO L175 Difference]: Start difference. First operand has 130 places, 93 transitions, 433 flow. Second operand 12 states and 896 transitions. [2022-09-16 11:48:02,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 102 transitions, 577 flow [2022-09-16 11:48:02,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 102 transitions, 496 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-09-16 11:48:02,887 INFO L231 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2022-09-16 11:48:02,887 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2022-09-16 11:48:02,888 INFO L287 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2022-09-16 11:48:02,888 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2022-09-16 11:48:02,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:48:02,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-09-16 11:48:02,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-09-16 11:48:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-09-16 11:48:02,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-09-16 11:48:02,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-09-16 11:48:02,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-09-16 11:48:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:48:02,892 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:48:02,895 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:48:02,895 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:48:02,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:48:02 BasicIcfg [2022-09-16 11:48:02,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:48:02,898 INFO L158 Benchmark]: Toolchain (without parser) took 3509.92ms. Allocated memory was 179.3MB in the beginning and 245.4MB in the end (delta: 66.1MB). Free memory was 124.7MB in the beginning and 187.7MB in the end (delta: -63.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-16 11:48:02,899 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 141.0MB in the beginning and 140.9MB in the end (delta: 79.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:48:02,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.00ms. Allocated memory is still 179.3MB. Free memory was 124.5MB in the beginning and 152.7MB in the end (delta: -28.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-09-16 11:48:02,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.53ms. Allocated memory is still 179.3MB. Free memory was 152.7MB in the beginning and 150.9MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:48:02,899 INFO L158 Benchmark]: Boogie Preprocessor took 34.11ms. Allocated memory is still 179.3MB. Free memory was 150.9MB in the beginning and 149.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:48:02,899 INFO L158 Benchmark]: RCFGBuilder took 420.04ms. Allocated memory is still 179.3MB. Free memory was 149.6MB in the beginning and 128.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-09-16 11:48:02,900 INFO L158 Benchmark]: TraceAbstraction took 2732.91ms. Allocated memory was 179.3MB in the beginning and 245.4MB in the end (delta: 66.1MB). Free memory was 127.8MB in the beginning and 187.7MB in the end (delta: -59.8MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2022-09-16 11:48:02,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory was 141.0MB in the beginning and 140.9MB in the end (delta: 79.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 276.00ms. Allocated memory is still 179.3MB. Free memory was 124.5MB in the beginning and 152.7MB in the end (delta: -28.2MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.53ms. Allocated memory is still 179.3MB. Free memory was 152.7MB in the beginning and 150.9MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.11ms. Allocated memory is still 179.3MB. Free memory was 150.9MB in the beginning and 149.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 420.04ms. Allocated memory is still 179.3MB. Free memory was 149.6MB in the beginning and 128.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2732.91ms. Allocated memory was 179.3MB in the beginning and 245.4MB in the end (delta: 66.1MB). Free memory was 127.8MB in the beginning and 187.7MB in the end (delta: -59.8MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: 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, 148 locations, 18 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: 2.6s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 447 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 975 IncrementalHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 85 mSDtfsCounter, 975 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=573occurred in iteration=8, InterpolantAutomatonStates: 79, 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, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 680 NumberOfCodeBlocks, 680 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 669 ConstructedInterpolants, 0 QuantifiedInterpolants, 1725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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! [2022-09-16 11:48:02,923 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...