/usr/bin/java -Xmx16000000000 -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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:07:15,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:07:15,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:07:15,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:07:15,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:07:15,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:07:15,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:07:15,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:07:15,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:07:15,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:07:15,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:07:15,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:07:15,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:07:15,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:07:15,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:07:15,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:07:15,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:07:15,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:07:15,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:07:15,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:07:15,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:07:15,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:07:15,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:07:15,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:07:15,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 04:07:15,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 04:07:15,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 04:07:15,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 04:07:15,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 04:07:15,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 04:07:15,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 04:07:15,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 04:07:15,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 04:07:15,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 04:07:15,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 04:07:15,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 04:07:15,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 04:07:15,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 04:07:15,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:07:15,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:07:15,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:07:15,620 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-Before.epf [2022-01-19 04:07:15,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:07:15,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:07:15,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:07:15,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:07:15,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:07:15,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:07:15,638 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:07:15,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:07:15,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:07:15,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:07:15,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:07:15,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:07:15,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:07:15,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:07:15,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:07:15,640 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:07:15,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:07:15,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:07:15,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:07:15,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:07:15,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:07:15,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:07:15,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:07:15,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:07:15,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:07:15,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:07:15,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:07:15,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:07:15,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:07:15,643 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:07:15,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:07:15,643 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:07:15,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:07:15,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:07:15,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:07:15,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:07:15,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:07:15,872 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:07:15,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2022-01-19 04:07:15,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ce8e9a2/7eedf52516b443fe8c211c2ea0425bc9/FLAGc57665b92 [2022-01-19 04:07:16,329 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:07:16,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2022-01-19 04:07:16,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ce8e9a2/7eedf52516b443fe8c211c2ea0425bc9/FLAGc57665b92 [2022-01-19 04:07:16,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85ce8e9a2/7eedf52516b443fe8c211c2ea0425bc9 [2022-01-19 04:07:16,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:07:16,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:07:16,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:07:16,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:07:16,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:07:16,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d006f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16, skipping insertion in model container [2022-01-19 04:07:16,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:07:16,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:07:16,622 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:07:16,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2022-01-19 04:07:16,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2022-01-19 04:07:16,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:07:16,780 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:07:16,809 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:07:16,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[31505,31518] [2022-01-19 04:07:16,841 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i[32915,32928] [2022-01-19 04:07:16,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:07:16,876 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:07:16,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16 WrapperNode [2022-01-19 04:07:16,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:07:16,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:07:16,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:07:16,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:07:16,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,929 INFO L137 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-01-19 04:07:16,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:07:16,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:07:16,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:07:16,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:07:16,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:07:16,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:07:16,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:07:16,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:07:16,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (1/1) ... [2022-01-19 04:07:16,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:07:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:07:17,008 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) [2022-01-19 04:07:17,035 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 [2022-01-19 04:07:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 04:07:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-01-19 04:07:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-01-19 04:07:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-19 04:07:17,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-19 04:07:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:07:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:07:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:07:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:07:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:07:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:07:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:07:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:07:17,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:07:17,055 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 04:07:17,170 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:07:17,171 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:07:17,332 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:07:17,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:07:17,337 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-19 04:07:17,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:07:17 BoogieIcfgContainer [2022-01-19 04:07:17,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:07:17,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:07:17,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:07:17,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:07:17,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:07:16" (1/3) ... [2022-01-19 04:07:17,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58376f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:07:17, skipping insertion in model container [2022-01-19 04:07:17,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:07:16" (2/3) ... [2022-01-19 04:07:17,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58376f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:07:17, skipping insertion in model container [2022-01-19 04:07:17,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:07:17" (3/3) ... [2022-01-19 04:07:17,345 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-01-19 04:07:17,349 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:07:17,350 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-19 04:07:17,350 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:07:17,377 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,377 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,377 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,378 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,378 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,378 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,378 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,378 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,379 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,380 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,381 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,381 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,381 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,381 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,381 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,381 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,382 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,382 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,382 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,382 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,382 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,383 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,383 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,383 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,383 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,384 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,384 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,384 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,384 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,385 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,385 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,385 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,386 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,386 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,386 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,386 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,387 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,387 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,388 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,388 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,388 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,388 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,388 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,388 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,389 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,389 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,390 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,390 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,391 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,392 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,393 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,394 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,395 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,396 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,396 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,396 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,397 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,397 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,397 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,398 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,398 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,398 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,398 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,398 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,398 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,401 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,401 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,401 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,401 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,401 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,406 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,406 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,406 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,406 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,406 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:07:17,409 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 04:07:17,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:07:17,451 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 04:07:17,451 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-19 04:07:17,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 117 transitions, 250 flow [2022-01-19 04:07:17,528 INFO L129 PetriNetUnfolder]: 20/115 cut-off events. [2022-01-19 04:07:17,528 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 04:07:17,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 20/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-01-19 04:07:17,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 117 transitions, 250 flow [2022-01-19 04:07:17,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 105 transitions, 219 flow [2022-01-19 04:07:17,558 INFO L129 PetriNetUnfolder]: 11/70 cut-off events. [2022-01-19 04:07:17,558 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:07:17,558 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:07:17,559 INFO L254 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] [2022-01-19 04:07:17,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:07:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:07:17,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1091180486, now seen corresponding path program 1 times [2022-01-19 04:07:17,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:07:17,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883962690] [2022-01-19 04:07:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:07:17,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:07:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:07:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:07:17,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:07:17,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883962690] [2022-01-19 04:07:17,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883962690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:07:17,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:07:17,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:07:17,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429332623] [2022-01-19 04:07:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:07:17,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 04:07:17,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:07:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 04:07:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 04:07:17,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 117 [2022-01-19 04:07:17,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 219 flow. Second operand has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:17,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:07:17,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 117 [2022-01-19 04:07:17,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:07:17,882 INFO L129 PetriNetUnfolder]: 10/95 cut-off events. [2022-01-19 04:07:17,882 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-01-19 04:07:17,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 95 events. 10/95 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 141 event pairs, 0 based on Foata normal form. 16/99 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2022-01-19 04:07:17,885 INFO L132 encePairwiseOnDemand]: 107/117 looper letters, 3 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2022-01-19 04:07:17,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 205 flow [2022-01-19 04:07:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 04:07:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 04:07:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2022-01-19 04:07:17,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9358974358974359 [2022-01-19 04:07:17,898 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 219 transitions. [2022-01-19 04:07:17,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 219 transitions. [2022-01-19 04:07:17,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:07:17,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 219 transitions. [2022-01-19 04:07:17,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:17,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 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) [2022-01-19 04:07:17,913 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 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) [2022-01-19 04:07:17,914 INFO L186 Difference]: Start difference. First operand has 92 places, 105 transitions, 219 flow. Second operand 2 states and 219 transitions. [2022-01-19 04:07:17,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 205 flow [2022-01-19 04:07:17,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 95 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 04:07:17,921 INFO L242 Difference]: Finished difference. Result has 90 places, 95 transitions, 194 flow [2022-01-19 04:07:17,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=194, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2022-01-19 04:07:17,929 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2022-01-19 04:07:17,929 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 194 flow [2022-01-19 04:07:17,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:17,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:07:17,930 INFO L254 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] [2022-01-19 04:07:17,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:07:17,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:07:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:07:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 894696772, now seen corresponding path program 1 times [2022-01-19 04:07:17,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:07:17,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263642745] [2022-01-19 04:07:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:07:17,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:07:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:07:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:07:18,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:07:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263642745] [2022-01-19 04:07:18,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263642745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:07:18,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:07:18,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 04:07:18,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260634883] [2022-01-19 04:07:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:07:18,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:07:18,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:07:18,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:07:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:07:18,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2022-01-19 04:07:18,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:07:18,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2022-01-19 04:07:18,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:07:18,118 INFO L129 PetriNetUnfolder]: 34/213 cut-off events. [2022-01-19 04:07:18,118 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 04:07:18,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 213 events. 34/213 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 709 event pairs, 4 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 265. Up to 24 conditions per place. [2022-01-19 04:07:18,120 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 11 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2022-01-19 04:07:18,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 99 transitions, 231 flow [2022-01-19 04:07:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:07:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:07:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2022-01-19 04:07:18,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8660968660968661 [2022-01-19 04:07:18,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2022-01-19 04:07:18,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2022-01-19 04:07:18,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:07:18,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2022-01-19 04:07:18,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,142 INFO L186 Difference]: Start difference. First operand has 90 places, 95 transitions, 194 flow. Second operand 3 states and 304 transitions. [2022-01-19 04:07:18,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 99 transitions, 231 flow [2022-01-19 04:07:18,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 04:07:18,145 INFO L242 Difference]: Finished difference. Result has 94 places, 96 transitions, 214 flow [2022-01-19 04:07:18,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2022-01-19 04:07:18,146 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2022-01-19 04:07:18,147 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 214 flow [2022-01-19 04:07:18,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:07:18,147 INFO L254 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] [2022-01-19 04:07:18,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:07:18,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:07:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:07:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 378899323, now seen corresponding path program 1 times [2022-01-19 04:07:18,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:07:18,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339825791] [2022-01-19 04:07:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:07:18,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:07:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:07:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:07:18,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:07:18,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339825791] [2022-01-19 04:07:18,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339825791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:07:18,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:07:18,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 04:07:18,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250869452] [2022-01-19 04:07:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:07:18,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:07:18,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:07:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:07:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:07:18,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2022-01-19 04:07:18,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:07:18,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2022-01-19 04:07:18,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:07:18,292 INFO L129 PetriNetUnfolder]: 27/191 cut-off events. [2022-01-19 04:07:18,292 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-01-19 04:07:18,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 191 events. 27/191 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 589 event pairs, 5 based on Foata normal form. 7/175 useless extension candidates. Maximal degree in co-relation 255. Up to 22 conditions per place. [2022-01-19 04:07:18,296 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 10 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2022-01-19 04:07:18,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 241 flow [2022-01-19 04:07:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:07:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:07:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-01-19 04:07:18,298 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8603988603988604 [2022-01-19 04:07:18,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-01-19 04:07:18,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-01-19 04:07:18,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:07:18,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-01-19 04:07:18,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,301 INFO L186 Difference]: Start difference. First operand has 94 places, 96 transitions, 214 flow. Second operand 3 states and 302 transitions. [2022-01-19 04:07:18,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 241 flow [2022-01-19 04:07:18,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:07:18,307 INFO L242 Difference]: Finished difference. Result has 95 places, 96 transitions, 218 flow [2022-01-19 04:07:18,308 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2022-01-19 04:07:18,310 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2022-01-19 04:07:18,310 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 218 flow [2022-01-19 04:07:18,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:07:18,310 INFO L254 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] [2022-01-19 04:07:18,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:07:18,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:07:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:07:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 412261863, now seen corresponding path program 1 times [2022-01-19 04:07:18,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:07:18,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696947988] [2022-01-19 04:07:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:07:18,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:07:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:07:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:07:18,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:07:18,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696947988] [2022-01-19 04:07:18,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696947988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:07:18,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:07:18,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:07:18,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634518396] [2022-01-19 04:07:18,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:07:18,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 04:07:18,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:07:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 04:07:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 04:07:18,414 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-01-19 04:07:18,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:07:18,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-01-19 04:07:18,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:07:18,614 INFO L129 PetriNetUnfolder]: 195/694 cut-off events. [2022-01-19 04:07:18,614 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-01-19 04:07:18,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 694 events. 195/694 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4130 event pairs, 79 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1095. Up to 220 conditions per place. [2022-01-19 04:07:18,619 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 33 selfloop transitions, 6 changer transitions 31/138 dead transitions. [2022-01-19 04:07:18,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 138 transitions, 445 flow [2022-01-19 04:07:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 04:07:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 04:07:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-01-19 04:07:18,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2022-01-19 04:07:18,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-01-19 04:07:18,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-01-19 04:07:18,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:07:18,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-01-19 04:07:18,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,625 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,625 INFO L186 Difference]: Start difference. First operand has 95 places, 96 transitions, 218 flow. Second operand 5 states and 470 transitions. [2022-01-19 04:07:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 138 transitions, 445 flow [2022-01-19 04:07:18,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 138 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 04:07:18,629 INFO L242 Difference]: Finished difference. Result has 101 places, 99 transitions, 286 flow [2022-01-19 04:07:18,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2022-01-19 04:07:18,630 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2022-01-19 04:07:18,630 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 286 flow [2022-01-19 04:07:18,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,631 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:07:18,631 INFO L254 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] [2022-01-19 04:07:18,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 04:07:18,631 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:07:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:07:18,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1312454881, now seen corresponding path program 2 times [2022-01-19 04:07:18,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:07:18,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267812140] [2022-01-19 04:07:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:07:18,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:07:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:07:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:07:18,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:07:18,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267812140] [2022-01-19 04:07:18,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267812140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:07:18,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:07:18,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:07:18,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668445179] [2022-01-19 04:07:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:07:18,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 04:07:18,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:07:18,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 04:07:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 04:07:18,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-01-19 04:07:18,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:07:18,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-01-19 04:07:18,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:07:18,846 INFO L129 PetriNetUnfolder]: 246/804 cut-off events. [2022-01-19 04:07:18,846 INFO L130 PetriNetUnfolder]: For 126/128 co-relation queries the response was YES. [2022-01-19 04:07:18,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 804 events. 246/804 cut-off events. For 126/128 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5008 event pairs, 91 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 1612. Up to 289 conditions per place. [2022-01-19 04:07:18,852 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 41 selfloop transitions, 13 changer transitions 18/143 dead transitions. [2022-01-19 04:07:18,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 143 transitions, 523 flow [2022-01-19 04:07:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 04:07:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 04:07:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2022-01-19 04:07:18,854 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8068376068376069 [2022-01-19 04:07:18,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2022-01-19 04:07:18,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2022-01-19 04:07:18,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:07:18,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2022-01-19 04:07:18,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,857 INFO L186 Difference]: Start difference. First operand has 101 places, 99 transitions, 286 flow. Second operand 5 states and 472 transitions. [2022-01-19 04:07:18,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 143 transitions, 523 flow [2022-01-19 04:07:18,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 143 transitions, 501 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-01-19 04:07:18,863 INFO L242 Difference]: Finished difference. Result has 109 places, 110 transitions, 386 flow [2022-01-19 04:07:18,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=109, PETRI_TRANSITIONS=110} [2022-01-19 04:07:18,864 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2022-01-19 04:07:18,865 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 110 transitions, 386 flow [2022-01-19 04:07:18,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:07:18,865 INFO L254 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] [2022-01-19 04:07:18,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 04:07:18,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-19 04:07:18,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:07:18,866 INFO L85 PathProgramCache]: Analyzing trace with hash -280044353, now seen corresponding path program 3 times [2022-01-19 04:07:18,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:07:18,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608660692] [2022-01-19 04:07:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:07:18,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:07:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:07:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:07:18,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:07:18,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608660692] [2022-01-19 04:07:18,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608660692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:07:18,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:07:18,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:07:18,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148895418] [2022-01-19 04:07:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:07:18,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 04:07:18,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:07:18,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 04:07:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 04:07:18,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 117 [2022-01-19 04:07:18,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 110 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:18,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:07:18,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 117 [2022-01-19 04:07:18,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:07:19,115 INFO L129 PetriNetUnfolder]: 241/801 cut-off events. [2022-01-19 04:07:19,116 INFO L130 PetriNetUnfolder]: For 409/414 co-relation queries the response was YES. [2022-01-19 04:07:19,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 801 events. 241/801 cut-off events. For 409/414 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4956 event pairs, 65 based on Foata normal form. 15/764 useless extension candidates. Maximal degree in co-relation 1876. Up to 254 conditions per place. [2022-01-19 04:07:19,120 INFO L132 encePairwiseOnDemand]: 100/117 looper letters, 0 selfloop transitions, 0 changer transitions 152/152 dead transitions. [2022-01-19 04:07:19,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 152 transitions, 755 flow [2022-01-19 04:07:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 04:07:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 04:07:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-01-19 04:07:19,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8034188034188035 [2022-01-19 04:07:19,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-01-19 04:07:19,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-01-19 04:07:19,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:07:19,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-01-19 04:07:19,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:19,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:19,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:19,125 INFO L186 Difference]: Start difference. First operand has 109 places, 110 transitions, 386 flow. Second operand 5 states and 470 transitions. [2022-01-19 04:07:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 152 transitions, 755 flow [2022-01-19 04:07:19,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 721 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-01-19 04:07:19,131 INFO L242 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2022-01-19 04:07:19,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2022-01-19 04:07:19,132 INFO L334 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2022-01-19 04:07:19,132 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2022-01-19 04:07:19,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:07:19,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-19 04:07:19,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-19 04:07:19,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2022-01-19 04:07:19,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2022-01-19 04:07:19,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-19 04:07:19,136 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-19 04:07:19,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 04:07:19,139 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-01-19 04:07:19,142 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 04:07:19,142 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 04:07:19,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 04:07:19 BasicIcfg [2022-01-19 04:07:19,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 04:07:19,146 INFO L158 Benchmark]: Toolchain (without parser) took 2790.16ms. Allocated memory is still 371.2MB. Free memory was 316.4MB in the beginning and 328.3MB in the end (delta: -11.9MB). Peak memory consumption was 194.3MB. Max. memory is 16.0GB. [2022-01-19 04:07:19,146 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 371.2MB. Free memory is still 334.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:07:19,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.18ms. Allocated memory is still 371.2MB. Free memory was 316.1MB in the beginning and 332.8MB in the end (delta: -16.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.0GB. [2022-01-19 04:07:19,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.96ms. Allocated memory is still 371.2MB. Free memory was 332.8MB in the beginning and 331.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:07:19,147 INFO L158 Benchmark]: Boogie Preprocessor took 44.96ms. Allocated memory is still 371.2MB. Free memory was 331.8MB in the beginning and 329.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:07:19,147 INFO L158 Benchmark]: RCFGBuilder took 363.37ms. Allocated memory is still 371.2MB. Free memory was 329.3MB in the beginning and 315.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 04:07:19,147 INFO L158 Benchmark]: TraceAbstraction took 1804.79ms. Allocated memory is still 371.2MB. Free memory was 315.0MB in the beginning and 328.3MB in the end (delta: -13.3MB). Peak memory consumption was 193.2MB. Max. memory is 16.0GB. [2022-01-19 04:07:19,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 371.2MB. Free memory is still 334.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 519.18ms. Allocated memory is still 371.2MB. Free memory was 316.1MB in the beginning and 332.8MB in the end (delta: -16.7MB). Peak memory consumption was 17.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.96ms. Allocated memory is still 371.2MB. Free memory was 332.8MB in the beginning and 331.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.96ms. Allocated memory is still 371.2MB. Free memory was 331.8MB in the beginning and 329.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 363.37ms. Allocated memory is still 371.2MB. Free memory was 329.3MB in the beginning and 315.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1804.79ms. Allocated memory is still 371.2MB. Free memory was 315.0MB in the beginning and 328.3MB in the end (delta: -13.3MB). Peak memory consumption was 193.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 154 locations, 6 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: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 288 IncrementalHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 133 mSDtfsCounter, 288 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=5, InterpolantAutomatonStates: 23, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 04:07:19,186 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...