/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/unroll-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:03:46,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:03:46,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:03:46,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:03:46,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:03:46,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:03:46,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:03:46,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:03:46,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:03:46,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:03:46,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:03:46,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:03:46,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:03:46,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:03:46,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:03:46,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:03:46,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:03:46,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:03:46,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:03:46,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:03:46,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:03:46,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:03:46,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:03:46,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:03:46,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:03:46,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:03:46,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:03:46,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:03:46,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:03:46,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:03:46,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:03:46,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:03:46,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:03:46,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:03:46,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:03:46,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:03:46,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:03:46,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:03:46,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:03:46,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:03:46,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:03:46,361 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 12:03:46,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:03:46,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:03:46,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:03:46,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:03:46,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:03:46,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:03:46,388 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:03:46,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:03:46,388 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:03:46,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:03:46,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:03:46,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:46,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:03:46,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:03:46,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:03:46,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:03:46,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:03:46,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:03:46,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:03:46,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:03:46,594 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:03:46,598 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:03:46,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-2.wvr.c [2022-09-16 12:03:46,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a373d4dc6/4df6704891d147169fc65ba37345c0eb/FLAGf472542ae [2022-09-16 12:03:46,958 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:03:46,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-2.wvr.c [2022-09-16 12:03:46,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a373d4dc6/4df6704891d147169fc65ba37345c0eb/FLAGf472542ae [2022-09-16 12:03:47,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a373d4dc6/4df6704891d147169fc65ba37345c0eb [2022-09-16 12:03:47,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:03:47,396 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:03:47,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:47,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:03:47,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:03:47,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fab7c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47, skipping insertion in model container [2022-09-16 12:03:47,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:03:47,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:03:47,565 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/unroll-2.wvr.c[2428,2441] [2022-09-16 12:03:47,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:03:47,577 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:03:47,590 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/unroll-2.wvr.c[2428,2441] [2022-09-16 12:03:47,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:03:47,605 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:03:47,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47 WrapperNode [2022-09-16 12:03:47,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:03:47,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:03:47,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:03:47,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:03:47,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,650 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 136 [2022-09-16 12:03:47,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:03:47,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:03:47,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:03:47,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:03:47,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:03:47,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:03:47,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:03:47,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:03:47,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (1/1) ... [2022-09-16 12:03:47,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:03:47,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:47,715 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 12:03:47,739 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 12:03:47,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:03:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:03:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:03:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:03:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:03:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:03:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:03:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:03:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:03:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:03:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:03:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:03:47,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:03:47,756 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 12:03:47,821 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:03:47,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:03:48,074 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:03:48,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:03:48,082 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 12:03:48,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:03:48 BoogieIcfgContainer [2022-09-16 12:03:48,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:03:48,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:03:48,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:03:48,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:03:48,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:03:47" (1/3) ... [2022-09-16 12:03:48,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15666cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:03:48, skipping insertion in model container [2022-09-16 12:03:48,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:03:47" (2/3) ... [2022-09-16 12:03:48,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15666cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:03:48, skipping insertion in model container [2022-09-16 12:03:48,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:03:48" (3/3) ... [2022-09-16 12:03:48,090 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2022-09-16 12:03:48,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:03:48,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-16 12:03:48,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:03:48,162 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:03:48,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 174 transitions, 364 flow [2022-09-16 12:03:48,240 INFO L130 PetriNetUnfolder]: 14/172 cut-off events. [2022-09-16 12:03:48,240 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 12:03:48,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 14/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 164 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-09-16 12:03:48,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 174 transitions, 364 flow [2022-09-16 12:03:48,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 68 transitions, 136 flow [2022-09-16 12:03:48,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:03:48,260 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;@47ba0755, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:03:48,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-16 12:03:48,286 INFO L130 PetriNetUnfolder]: 3/62 cut-off events. [2022-09-16 12:03:48,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:03:48,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:48,287 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] [2022-09-16 12:03:48,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:48,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 164611527, now seen corresponding path program 1 times [2022-09-16 12:03:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891708610] [2022-09-16 12:03:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:48,522 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 12:03:48,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:48,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891708610] [2022-09-16 12:03:48,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891708610] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:48,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:03:48,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:03:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753632144] [2022-09-16 12:03:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:03:48,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:03:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:03:48,565 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 12:03:48,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 12:03:48,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:48,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 12:03:48,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:48,648 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-16 12:03:48,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:03:48,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-09-16 12:03:48,650 INFO L137 encePairwiseOnDemand]: 165/174 looper letters, 14 selfloop transitions, 4 changer transitions 3/72 dead transitions. [2022-09-16 12:03:48,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 180 flow [2022-09-16 12:03:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:03:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:03:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2022-09-16 12:03:48,668 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8655172413793103 [2022-09-16 12:03:48,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2022-09-16 12:03:48,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2022-09-16 12:03:48,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:48,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2022-09-16 12:03:48,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 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 12:03:48,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 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 12:03:48,691 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 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 12:03:48,693 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 136 flow. Second operand 5 states and 753 transitions. [2022-09-16 12:03:48,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 180 flow [2022-09-16 12:03:48,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:03:48,700 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 154 flow [2022-09-16 12:03:48,701 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2022-09-16 12:03:48,705 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2022-09-16 12:03:48,705 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 154 flow [2022-09-16 12:03:48,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 12:03:48,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:48,707 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:48,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:03:48,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:48,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:48,709 INFO L85 PathProgramCache]: Analyzing trace with hash 220006458, now seen corresponding path program 1 times [2022-09-16 12:03:48,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:48,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563236900] [2022-09-16 12:03:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:48,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:48,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:48,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563236900] [2022-09-16 12:03:48,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563236900] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:48,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906556652] [2022-09-16 12:03:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:48,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:48,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:48,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:48,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 12:03:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:48,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:48,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:49,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:49,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906556652] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:49,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:49,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:03:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635381162] [2022-09-16 12:03:49,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:03:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:03:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:03:49,068 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 12:03:49,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 148.66666666666666) internal successors, (1784), 12 states have internal predecessors, (1784), 0 states have call successors, (0), 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 12:03:49,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:49,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 12:03:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:49,219 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2022-09-16 12:03:49,219 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 12:03:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 100 events. 1/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 88. Up to 11 conditions per place. [2022-09-16 12:03:49,221 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 23 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2022-09-16 12:03:49,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 312 flow [2022-09-16 12:03:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:03:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:03:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2672 transitions. [2022-09-16 12:03:49,225 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8531289910600255 [2022-09-16 12:03:49,226 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2672 transitions. [2022-09-16 12:03:49,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2672 transitions. [2022-09-16 12:03:49,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:49,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2672 transitions. [2022-09-16 12:03:49,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 148.44444444444446) internal successors, (2672), 18 states have internal predecessors, (2672), 0 states have call successors, (0), 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 12:03:49,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 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 12:03:49,236 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 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 12:03:49,236 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 18 states and 2672 transitions. [2022-09-16 12:03:49,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 312 flow [2022-09-16 12:03:49,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:03:49,240 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 258 flow [2022-09-16 12:03:49,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=258, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2022-09-16 12:03:49,242 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2022-09-16 12:03:49,242 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 258 flow [2022-09-16 12:03:49,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 148.66666666666666) internal successors, (1784), 12 states have internal predecessors, (1784), 0 states have call successors, (0), 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 12:03:49,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:49,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:49,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 12:03:49,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:49,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1769734065, now seen corresponding path program 1 times [2022-09-16 12:03:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:49,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747161550] [2022-09-16 12:03:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:49,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:49,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747161550] [2022-09-16 12:03:49,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747161550] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059597130] [2022-09-16 12:03:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:49,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:49,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:49,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:03:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:49,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:49,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:49,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:03:49,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059597130] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:49,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:03:49,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:03:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86800591] [2022-09-16 12:03:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:03:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:03:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:03:49,607 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-09-16 12:03:49,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:49,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:49,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-09-16 12:03:49,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:49,657 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2022-09-16 12:03:49,657 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-09-16 12:03:49,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 96 events. 1/96 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 72. Up to 17 conditions per place. [2022-09-16 12:03:49,657 INFO L137 encePairwiseOnDemand]: 169/174 looper letters, 15 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2022-09-16 12:03:49,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 293 flow [2022-09-16 12:03:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:03:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:03:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1040 transitions. [2022-09-16 12:03:49,660 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8538587848932676 [2022-09-16 12:03:49,660 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1040 transitions. [2022-09-16 12:03:49,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1040 transitions. [2022-09-16 12:03:49,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:49,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1040 transitions. [2022-09-16 12:03:49,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 0 states have call successors, (0), 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 12:03:49,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 12:03:49,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 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 12:03:49,664 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 258 flow. Second operand 7 states and 1040 transitions. [2022-09-16 12:03:49,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 293 flow [2022-09-16 12:03:49,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 77 transitions, 261 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 12:03:49,666 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 221 flow [2022-09-16 12:03:49,666 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-09-16 12:03:49,667 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2022-09-16 12:03:49,667 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 221 flow [2022-09-16 12:03:49,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:49,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:49,668 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:49,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:49,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 12:03:49,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-16 12:03:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2109886599, now seen corresponding path program 2 times [2022-09-16 12:03:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:49,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256474070] [2022-09-16 12:03:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:50,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256474070] [2022-09-16 12:03:50,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256474070] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:50,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144113279] [2022-09-16 12:03:50,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:03:50,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:50,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:50,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:03:50,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:03:50,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:03:50,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:03:50,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:03:50,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144113279] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:50,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:50,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:03:50,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239736539] [2022-09-16 12:03:50,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:50,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:03:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:03:50,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:03:50,377 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 174 [2022-09-16 12:03:50,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 221 flow. Second operand has 18 states, 18 states have (on average 135.72222222222223) internal successors, (2443), 18 states have internal predecessors, (2443), 0 states have call successors, (0), 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 12:03:50,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:50,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 174 [2022-09-16 12:03:50,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:50,674 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-09-16 12:03:50,674 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-09-16 12:03:50,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 1/106 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 121. Up to 7 conditions per place. [2022-09-16 12:03:50,676 INFO L137 encePairwiseOnDemand]: 163/174 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2022-09-16 12:03:50,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 396 flow [2022-09-16 12:03:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:03:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:03:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3226 transitions. [2022-09-16 12:03:50,682 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7725095785440613 [2022-09-16 12:03:50,682 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3226 transitions. [2022-09-16 12:03:50,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3226 transitions. [2022-09-16 12:03:50,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:50,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3226 transitions. [2022-09-16 12:03:50,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 134.41666666666666) internal successors, (3226), 24 states have internal predecessors, (3226), 0 states have call successors, (0), 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 12:03:50,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 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 12:03:50,697 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 states have internal predecessors, (4350), 0 states have call successors, (0), 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 12:03:50,697 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 221 flow. Second operand 24 states and 3226 transitions. [2022-09-16 12:03:50,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 396 flow [2022-09-16 12:03:50,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 371 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 12:03:50,708 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2022-09-16 12:03:50,708 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2022-09-16 12:03:50,709 INFO L287 CegarLoopForPetriNet]: 65 programPoint places, 33 predicate places. [2022-09-16 12:03:50,709 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2022-09-16 12:03:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 135.72222222222223) internal successors, (2443), 18 states have internal predecessors, (2443), 0 states have call successors, (0), 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 12:03:50,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-09-16 12:03:50,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-09-16 12:03:50,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-16 12:03:50,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-16 12:03:50,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:50,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:50,923 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-09-16 12:03:50,926 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:03:50,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:03:50,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:03:50 BasicIcfg [2022-09-16 12:03:50,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:03:50,930 INFO L158 Benchmark]: Toolchain (without parser) took 3533.57ms. Allocated memory was 205.5MB in the beginning and 255.9MB in the end (delta: 50.3MB). Free memory was 150.1MB in the beginning and 108.1MB in the end (delta: 42.1MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. [2022-09-16 12:03:50,930 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 205.5MB. Free memory is still 166.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:03:50,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.31ms. Allocated memory was 205.5MB in the beginning and 255.9MB in the end (delta: 50.3MB). Free memory was 150.0MB in the beginning and 231.4MB in the end (delta: -81.4MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-09-16 12:03:50,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.56ms. Allocated memory is still 255.9MB. Free memory was 231.4MB in the beginning and 229.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 12:03:50,931 INFO L158 Benchmark]: Boogie Preprocessor took 27.06ms. Allocated memory is still 255.9MB. Free memory was 229.8MB in the beginning and 227.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:03:50,931 INFO L158 Benchmark]: RCFGBuilder took 405.10ms. Allocated memory is still 255.9MB. Free memory was 227.7MB in the beginning and 212.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-09-16 12:03:50,931 INFO L158 Benchmark]: TraceAbstraction took 2843.93ms. Allocated memory is still 255.9MB. Free memory was 211.5MB in the beginning and 108.1MB in the end (delta: 103.4MB). Peak memory consumption was 104.4MB. Max. memory is 8.0GB. [2022-09-16 12:03:50,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 205.5MB. Free memory is still 166.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.31ms. Allocated memory was 205.5MB in the beginning and 255.9MB in the end (delta: 50.3MB). Free memory was 150.0MB in the beginning and 231.4MB in the end (delta: -81.4MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.56ms. Allocated memory is still 255.9MB. Free memory was 231.4MB in the beginning and 229.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.06ms. Allocated memory is still 255.9MB. Free memory was 229.8MB in the beginning and 227.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 405.10ms. Allocated memory is still 255.9MB. Free memory was 227.7MB in the beginning and 212.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2843.93ms. Allocated memory is still 255.9MB. Free memory was 211.5MB in the beginning and 108.1MB in the end (delta: 103.4MB). Peak memory consumption was 104.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 212 locations, 4 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: 2.7s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 265 IncrementalHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 20 mSDtfsCounter, 265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=2, InterpolantAutomatonStates: 54, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 509 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 659 ConstructedInterpolants, 0 QuantifiedInterpolants, 1193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 123/266 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 12:03:50,946 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...