/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/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:37:42,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:37:42,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:37:42,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:37:42,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:37:42,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:37:42,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:37:42,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:37:42,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:37:42,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:37:42,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:37:42,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:37:42,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:37:42,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:37:42,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:37:42,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:37:42,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:37:42,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:37:42,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:37:42,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:37:42,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:37:42,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:37:42,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:37:42,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:37:42,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:37:42,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:37:42,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:37:42,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:37:42,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:37:42,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:37:42,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:37:42,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:37:42,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:37:42,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:37:42,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:37:42,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:37:42,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:37:42,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:37:42,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:37:42,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:37:42,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:37:42,426 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 07:37:42,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:37:42,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:37:42,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:37:42,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:37:42,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:37:42,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:37:42,457 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:37:42,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:37:42,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:37:42,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:37:42,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:37:42,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:37:42,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:37:42,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:37:42,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:37:42,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:37:42,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:37:42,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:37:42,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:37:42,461 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:37:42,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:37:42,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:37:42,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:37:42,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:37:42,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:37:42,733 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:37:42,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-01-19 07:37:42,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d251117c6/ab698cf0726a48b3b6286bcbc138253f/FLAG71d3481aa [2022-01-19 07:37:43,155 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:37:43,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-01-19 07:37:43,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d251117c6/ab698cf0726a48b3b6286bcbc138253f/FLAG71d3481aa [2022-01-19 07:37:43,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d251117c6/ab698cf0726a48b3b6286bcbc138253f [2022-01-19 07:37:43,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:37:43,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:37:43,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:37:43,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:37:43,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:37:43,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575e523e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43, skipping insertion in model container [2022-01-19 07:37:43,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:37:43,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:37:43,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-01-19 07:37:43,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:37:43,815 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:37:43,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-01-19 07:37:43,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:37:43,859 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:37:43,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43 WrapperNode [2022-01-19 07:37:43,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:37:43,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:37:43,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:37:43,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:37:43,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,898 INFO L137 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-01-19 07:37:43,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:37:43,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:37:43,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:37:43,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:37:43,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:37:43,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:37:43,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:37:43,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:37:43,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (1/1) ... [2022-01-19 07:37:43,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:37:43,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:37:43,964 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 07:37:43,992 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 07:37:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:37:44,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:37:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:37:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:37:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:37:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:37:44,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:37:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:37:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 07:37:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 07:37:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:37:44,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:37:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:37:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:37:44,020 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 07:37:44,095 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:37:44,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:37:44,226 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:37:44,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:37:44,244 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 07:37:44,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:37:44 BoogieIcfgContainer [2022-01-19 07:37:44,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:37:44,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:37:44,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:37:44,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:37:44,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:37:43" (1/3) ... [2022-01-19 07:37:44,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2904e1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:37:44, skipping insertion in model container [2022-01-19 07:37:44,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:37:43" (2/3) ... [2022-01-19 07:37:44,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2904e1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:37:44, skipping insertion in model container [2022-01-19 07:37:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:37:44" (3/3) ... [2022-01-19 07:37:44,253 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-01-19 07:37:44,257 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:37:44,257 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:37:44,257 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:37:44,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,315 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,316 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,328 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,330 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,331 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,332 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,337 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:37:44,342 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 07:37:44,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:37:44,389 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 07:37:44,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 07:37:44,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2022-01-19 07:37:44,448 INFO L129 PetriNetUnfolder]: 11/93 cut-off events. [2022-01-19 07:37:44,449 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:37:44,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-01-19 07:37:44,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 206 flow [2022-01-19 07:37:44,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-01-19 07:37:44,477 INFO L129 PetriNetUnfolder]: 11/83 cut-off events. [2022-01-19 07:37:44,477 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 07:37:44,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:44,478 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, 1, 1, 1] [2022-01-19 07:37:44,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash -964819264, now seen corresponding path program 1 times [2022-01-19 07:37:44,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:44,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490466015] [2022-01-19 07:37:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:44,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:44,708 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 07:37:44,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490466015] [2022-01-19 07:37:44,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490466015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:44,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:44,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:37:44,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174171910] [2022-01-19 07:37:44,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:44,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:37:44,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:37:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:37:44,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-01-19 07:37:44,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 07:37:44,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:44,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-01-19 07:37:44,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:44,836 INFO L129 PetriNetUnfolder]: 42/175 cut-off events. [2022-01-19 07:37:44,836 INFO L130 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-01-19 07:37:44,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 175 events. 42/175 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 3 based on Foata normal form. 7/152 useless extension candidates. Maximal degree in co-relation 156. Up to 24 conditions per place. [2022-01-19 07:37:44,840 INFO L132 encePairwiseOnDemand]: 89/95 looper letters, 14 selfloop transitions, 2 changer transitions 1/86 dead transitions. [2022-01-19 07:37:44,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 219 flow [2022-01-19 07:37:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:37:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:37:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2022-01-19 07:37:44,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9192982456140351 [2022-01-19 07:37:44,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2022-01-19 07:37:44,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2022-01-19 07:37:44,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:44,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2022-01-19 07:37:44,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:37:44,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:44,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:44,865 INFO L186 Difference]: Start difference. First operand has 80 places, 84 transitions, 180 flow. Second operand 3 states and 262 transitions. [2022-01-19 07:37:44,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 219 flow [2022-01-19 07:37:44,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 07:37:44,871 INFO L242 Difference]: Finished difference. Result has 79 places, 81 transitions, 176 flow [2022-01-19 07:37:44,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2022-01-19 07:37:44,876 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, -1 predicate places. [2022-01-19 07:37:44,876 INFO L470 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 176 flow [2022-01-19 07:37:44,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 07:37:44,876 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:44,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:44,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:37:44,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 170943632, now seen corresponding path program 1 times [2022-01-19 07:37:44,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:44,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753887820] [2022-01-19 07:37:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:44,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:37:45,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:45,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753887820] [2022-01-19 07:37:45,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753887820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:45,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:45,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:37:45,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963483639] [2022-01-19 07:37:45,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:45,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:37:45,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:37:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:37:45,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-01-19 07:37:45,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 07:37:45,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:45,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-01-19 07:37:45,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:45,052 INFO L129 PetriNetUnfolder]: 27/141 cut-off events. [2022-01-19 07:37:45,052 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:37:45,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 141 events. 27/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 325 event pairs, 2 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 127. Up to 20 conditions per place. [2022-01-19 07:37:45,055 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 14 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-01-19 07:37:45,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 219 flow [2022-01-19 07:37:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:37:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:37:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-01-19 07:37:45,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9017543859649123 [2022-01-19 07:37:45,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-01-19 07:37:45,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-01-19 07:37:45,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:45,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-01-19 07:37:45,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 07:37:45,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:45,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:45,061 INFO L186 Difference]: Start difference. First operand has 79 places, 81 transitions, 176 flow. Second operand 3 states and 257 transitions. [2022-01-19 07:37:45,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 219 flow [2022-01-19 07:37:45,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:37:45,064 INFO L242 Difference]: Finished difference. Result has 80 places, 82 transitions, 186 flow [2022-01-19 07:37:45,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2022-01-19 07:37:45,066 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2022-01-19 07:37:45,066 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 186 flow [2022-01-19 07:37:45,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 07:37:45,066 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:45,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:45,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:37:45,067 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash -503586312, now seen corresponding path program 1 times [2022-01-19 07:37:45,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:45,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202902525] [2022-01-19 07:37:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:45,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:37:45,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:45,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202902525] [2022-01-19 07:37:45,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202902525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:45,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:45,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:37:45,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022087023] [2022-01-19 07:37:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:45,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:37:45,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:45,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:37:45,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:37:45,165 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-01-19 07:37:45,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 07:37:45,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:45,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-01-19 07:37:45,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:45,222 INFO L129 PetriNetUnfolder]: 99/305 cut-off events. [2022-01-19 07:37:45,222 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-01-19 07:37:45,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 305 events. 99/305 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1179 event pairs, 5 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 283. Up to 92 conditions per place. [2022-01-19 07:37:45,226 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 16 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2022-01-19 07:37:45,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 233 flow [2022-01-19 07:37:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:37:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:37:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2022-01-19 07:37:45,229 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.887719298245614 [2022-01-19 07:37:45,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2022-01-19 07:37:45,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2022-01-19 07:37:45,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:45,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2022-01-19 07:37:45,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 07:37:45,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:45,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:45,232 INFO L186 Difference]: Start difference. First operand has 80 places, 82 transitions, 186 flow. Second operand 3 states and 253 transitions. [2022-01-19 07:37:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 233 flow [2022-01-19 07:37:45,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:37:45,235 INFO L242 Difference]: Finished difference. Result has 82 places, 83 transitions, 196 flow [2022-01-19 07:37:45,236 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2022-01-19 07:37:45,236 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 2 predicate places. [2022-01-19 07:37:45,237 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 196 flow [2022-01-19 07:37:45,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 07:37:45,237 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:45,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:45,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:37:45,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1065764968, now seen corresponding path program 1 times [2022-01-19 07:37:45,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:45,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61012189] [2022-01-19 07:37:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:45,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:37:45,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:45,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61012189] [2022-01-19 07:37:45,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61012189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:45,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:45,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:37:45,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888260685] [2022-01-19 07:37:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:45,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:37:45,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:37:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:37:45,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-01-19 07:37:45,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 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 07:37:45,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:45,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-01-19 07:37:45,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:45,400 INFO L129 PetriNetUnfolder]: 29/180 cut-off events. [2022-01-19 07:37:45,401 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-01-19 07:37:45,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 180 events. 29/180 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 564 event pairs, 8 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 204. Up to 29 conditions per place. [2022-01-19 07:37:45,403 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 13 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2022-01-19 07:37:45,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 241 flow [2022-01-19 07:37:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:37:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:37:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2022-01-19 07:37:45,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8763157894736842 [2022-01-19 07:37:45,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2022-01-19 07:37:45,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2022-01-19 07:37:45,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:45,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2022-01-19 07:37:45,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 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 07:37:45,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 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 07:37:45,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 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 07:37:45,411 INFO L186 Difference]: Start difference. First operand has 82 places, 83 transitions, 196 flow. Second operand 4 states and 333 transitions. [2022-01-19 07:37:45,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 241 flow [2022-01-19 07:37:45,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:37:45,417 INFO L242 Difference]: Finished difference. Result has 86 places, 84 transitions, 219 flow [2022-01-19 07:37:45,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2022-01-19 07:37:45,418 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2022-01-19 07:37:45,419 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 219 flow [2022-01-19 07:37:45,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 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 07:37:45,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:45,420 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:45,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:37:45,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 898569745, now seen corresponding path program 1 times [2022-01-19 07:37:45,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:45,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513720630] [2022-01-19 07:37:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:45,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 07:37:45,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:45,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513720630] [2022-01-19 07:37:45,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513720630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:45,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:45,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 07:37:45,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618129767] [2022-01-19 07:37:45,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:45,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:37:45,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:37:45,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 07:37:45,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 95 [2022-01-19 07:37:45,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 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 07:37:45,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:45,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 95 [2022-01-19 07:37:45,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:45,625 INFO L129 PetriNetUnfolder]: 115/566 cut-off events. [2022-01-19 07:37:45,625 INFO L130 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-01-19 07:37:45,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 566 events. 115/566 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3214 event pairs, 46 based on Foata normal form. 28/555 useless extension candidates. Maximal degree in co-relation 579. Up to 110 conditions per place. [2022-01-19 07:37:45,630 INFO L132 encePairwiseOnDemand]: 88/95 looper letters, 14 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2022-01-19 07:37:45,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 271 flow [2022-01-19 07:37:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:37:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:37:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2022-01-19 07:37:45,632 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8789473684210526 [2022-01-19 07:37:45,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2022-01-19 07:37:45,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2022-01-19 07:37:45,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:45,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2022-01-19 07:37:45,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 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 07:37:45,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 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 07:37:45,635 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 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 07:37:45,635 INFO L186 Difference]: Start difference. First operand has 86 places, 84 transitions, 219 flow. Second operand 4 states and 334 transitions. [2022-01-19 07:37:45,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 271 flow [2022-01-19 07:37:45,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:37:45,643 INFO L242 Difference]: Finished difference. Result has 90 places, 85 transitions, 249 flow [2022-01-19 07:37:45,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2022-01-19 07:37:45,646 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 10 predicate places. [2022-01-19 07:37:45,646 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 249 flow [2022-01-19 07:37:45,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 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 07:37:45,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:45,647 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:45,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:37:45,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1047246103, now seen corresponding path program 1 times [2022-01-19 07:37:45,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:45,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554626994] [2022-01-19 07:37:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:45,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:37:45,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:45,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554626994] [2022-01-19 07:37:45,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554626994] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:37:45,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039966230] [2022-01-19 07:37:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:45,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:37:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:37:45,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:37:45,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 07:37:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:45,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 07:37:45,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:37:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:37:46,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:37:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:37:46,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039966230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:37:46,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:37:46,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-19 07:37:46,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818169428] [2022-01-19 07:37:46,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:37:46,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:37:46,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:37:46,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:37:46,425 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-01-19 07:37:46,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 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 07:37:46,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:46,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-01-19 07:37:46,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:46,573 INFO L129 PetriNetUnfolder]: 86/632 cut-off events. [2022-01-19 07:37:46,573 INFO L130 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-01-19 07:37:46,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 632 events. 86/632 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3722 event pairs, 17 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 561. Up to 90 conditions per place. [2022-01-19 07:37:46,578 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 26 selfloop transitions, 7 changer transitions 4/109 dead transitions. [2022-01-19 07:37:46,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 378 flow [2022-01-19 07:37:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:37:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:37:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2022-01-19 07:37:46,581 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2022-01-19 07:37:46,581 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2022-01-19 07:37:46,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2022-01-19 07:37:46,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:46,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2022-01-19 07:37:46,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 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 07:37:46,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 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 07:37:46,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 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 07:37:46,585 INFO L186 Difference]: Start difference. First operand has 90 places, 85 transitions, 249 flow. Second operand 7 states and 577 transitions. [2022-01-19 07:37:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 378 flow [2022-01-19 07:37:46,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 373 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 07:37:46,589 INFO L242 Difference]: Finished difference. Result has 100 places, 91 transitions, 295 flow [2022-01-19 07:37:46,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2022-01-19 07:37:46,589 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 20 predicate places. [2022-01-19 07:37:46,590 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 295 flow [2022-01-19 07:37:46,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 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 07:37:46,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:46,590 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:46,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 07:37:46,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 07:37:46,804 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2002618959, now seen corresponding path program 2 times [2022-01-19 07:37:46,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:46,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014083663] [2022-01-19 07:37:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:46,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:37:46,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:46,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014083663] [2022-01-19 07:37:46,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014083663] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:37:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899228355] [2022-01-19 07:37:46,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:37:46,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:37:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:37:46,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:37:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 07:37:47,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:37:47,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:37:47,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 07:37:47,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:37:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:37:47,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:37:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:37:47,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899228355] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:37:47,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:37:47,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-19 07:37:47,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889566927] [2022-01-19 07:37:47,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:37:47,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 07:37:47,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:47,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 07:37:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 07:37:47,417 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-01-19 07:37:47,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 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 07:37:47,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:47,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-01-19 07:37:47,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:47,604 INFO L129 PetriNetUnfolder]: 121/880 cut-off events. [2022-01-19 07:37:47,605 INFO L130 PetriNetUnfolder]: For 374/382 co-relation queries the response was YES. [2022-01-19 07:37:47,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 880 events. 121/880 cut-off events. For 374/382 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5997 event pairs, 15 based on Foata normal form. 3/837 useless extension candidates. Maximal degree in co-relation 1677. Up to 152 conditions per place. [2022-01-19 07:37:47,611 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 32 selfloop transitions, 11 changer transitions 4/119 dead transitions. [2022-01-19 07:37:47,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 119 transitions, 495 flow [2022-01-19 07:37:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:37:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:37:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2022-01-19 07:37:47,613 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8676691729323308 [2022-01-19 07:37:47,613 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2022-01-19 07:37:47,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2022-01-19 07:37:47,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:47,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2022-01-19 07:37:47,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.42857142857143) internal successors, (577), 7 states have internal predecessors, (577), 0 states have call successors, (0), 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 07:37:47,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 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 07:37:47,617 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 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 07:37:47,617 INFO L186 Difference]: Start difference. First operand has 100 places, 91 transitions, 295 flow. Second operand 7 states and 577 transitions. [2022-01-19 07:37:47,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 119 transitions, 495 flow [2022-01-19 07:37:47,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 119 transitions, 481 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-01-19 07:37:47,623 INFO L242 Difference]: Finished difference. Result has 107 places, 101 transitions, 400 flow [2022-01-19 07:37:47,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2022-01-19 07:37:47,624 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 27 predicate places. [2022-01-19 07:37:47,624 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 400 flow [2022-01-19 07:37:47,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 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 07:37:47,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:47,624 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:47,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 07:37:47,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 07:37:47,846 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:47,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:47,846 INFO L85 PathProgramCache]: Analyzing trace with hash 229789643, now seen corresponding path program 3 times [2022-01-19 07:37:47,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:47,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568820395] [2022-01-19 07:37:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:47,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:37:47,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:47,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568820395] [2022-01-19 07:37:47,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568820395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:37:47,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176185096] [2022-01-19 07:37:47,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:37:47,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:37:47,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:37:47,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:37:47,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 07:37:48,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 07:37:48,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:37:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 07:37:48,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:37:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:37:48,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:37:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 07:37:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176185096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:37:48,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:37:48,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-01-19 07:37:48,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104943039] [2022-01-19 07:37:48,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:37:48,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 07:37:48,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 07:37:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-19 07:37:48,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2022-01-19 07:37:48,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 400 flow. Second operand has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 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 07:37:48,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:48,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2022-01-19 07:37:48,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:48,594 INFO L129 PetriNetUnfolder]: 121/878 cut-off events. [2022-01-19 07:37:48,594 INFO L130 PetriNetUnfolder]: For 693/715 co-relation queries the response was YES. [2022-01-19 07:37:48,599 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 878 events. 121/878 cut-off events. For 693/715 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5944 event pairs, 7 based on Foata normal form. 19/853 useless extension candidates. Maximal degree in co-relation 1814. Up to 83 conditions per place. [2022-01-19 07:37:48,602 INFO L132 encePairwiseOnDemand]: 87/95 looper letters, 22 selfloop transitions, 25 changer transitions 4/123 dead transitions. [2022-01-19 07:37:48,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 123 transitions, 591 flow [2022-01-19 07:37:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 07:37:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 07:37:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 652 transitions. [2022-01-19 07:37:48,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8578947368421053 [2022-01-19 07:37:48,604 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 652 transitions. [2022-01-19 07:37:48,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 652 transitions. [2022-01-19 07:37:48,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:48,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 652 transitions. [2022-01-19 07:37:48,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 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 07:37:48,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 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 07:37:48,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 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 07:37:48,608 INFO L186 Difference]: Start difference. First operand has 107 places, 101 transitions, 400 flow. Second operand 8 states and 652 transitions. [2022-01-19 07:37:48,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 123 transitions, 591 flow [2022-01-19 07:37:48,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 573 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-01-19 07:37:48,613 INFO L242 Difference]: Finished difference. Result has 113 places, 105 transitions, 487 flow [2022-01-19 07:37:48,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2022-01-19 07:37:48,613 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 33 predicate places. [2022-01-19 07:37:48,614 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 487 flow [2022-01-19 07:37:48,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.625) internal successors, (629), 8 states have internal predecessors, (629), 0 states have call successors, (0), 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 07:37:48,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:48,614 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:48,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 07:37:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:37:48,824 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1010375160, now seen corresponding path program 4 times [2022-01-19 07:37:48,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:48,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608804994] [2022-01-19 07:37:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:48,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 07:37:48,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:48,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608804994] [2022-01-19 07:37:48,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608804994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:48,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:48,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:37:48,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521959388] [2022-01-19 07:37:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:48,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:37:48,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:37:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:37:48,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-01-19 07:37:48,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 07:37:48,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:48,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-01-19 07:37:48,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:48,957 INFO L129 PetriNetUnfolder]: 93/657 cut-off events. [2022-01-19 07:37:48,957 INFO L130 PetriNetUnfolder]: For 849/899 co-relation queries the response was YES. [2022-01-19 07:37:48,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 657 events. 93/657 cut-off events. For 849/899 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4021 event pairs, 8 based on Foata normal form. 27/649 useless extension candidates. Maximal degree in co-relation 1531. Up to 102 conditions per place. [2022-01-19 07:37:48,963 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 20 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2022-01-19 07:37:48,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 107 transitions, 540 flow [2022-01-19 07:37:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:37:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:37:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-01-19 07:37:48,965 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8912280701754386 [2022-01-19 07:37:48,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-01-19 07:37:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-01-19 07:37:48,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:48,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-01-19 07:37:48,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 07:37:48,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:48,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:48,967 INFO L186 Difference]: Start difference. First operand has 113 places, 105 transitions, 487 flow. Second operand 3 states and 254 transitions. [2022-01-19 07:37:48,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 107 transitions, 540 flow [2022-01-19 07:37:48,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 519 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 07:37:48,971 INFO L242 Difference]: Finished difference. Result has 111 places, 106 transitions, 488 flow [2022-01-19 07:37:48,972 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2022-01-19 07:37:48,973 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 31 predicate places. [2022-01-19 07:37:48,973 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 488 flow [2022-01-19 07:37:48,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 07:37:48,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:37:48,973 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 07:37:48,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 07:37:48,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 07:37:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:37:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1344396963, now seen corresponding path program 5 times [2022-01-19 07:37:48,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:37:48,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015483545] [2022-01-19 07:37:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:37:48,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:37:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:37:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-19 07:37:49,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:37:49,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015483545] [2022-01-19 07:37:49,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015483545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:37:49,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:37:49,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:37:49,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657954730] [2022-01-19 07:37:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:37:49,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:37:49,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:37:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:37:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:37:49,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2022-01-19 07:37:49,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 07:37:49,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:37:49,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2022-01-19 07:37:49,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:37:49,118 INFO L129 PetriNetUnfolder]: 197/943 cut-off events. [2022-01-19 07:37:49,118 INFO L130 PetriNetUnfolder]: For 1537/1552 co-relation queries the response was YES. [2022-01-19 07:37:49,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 943 events. 197/943 cut-off events. For 1537/1552 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6602 event pairs, 35 based on Foata normal form. 31/913 useless extension candidates. Maximal degree in co-relation 2070. Up to 200 conditions per place. [2022-01-19 07:37:49,124 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2022-01-19 07:37:49,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 108 transitions, 597 flow [2022-01-19 07:37:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:37:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:37:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2022-01-19 07:37:49,126 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8982456140350877 [2022-01-19 07:37:49,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2022-01-19 07:37:49,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2022-01-19 07:37:49,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:37:49,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2022-01-19 07:37:49,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 07:37:49,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:49,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:37:49,129 INFO L186 Difference]: Start difference. First operand has 111 places, 106 transitions, 488 flow. Second operand 3 states and 256 transitions. [2022-01-19 07:37:49,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 108 transitions, 597 flow [2022-01-19 07:37:49,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 108 transitions, 564 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 07:37:49,134 INFO L242 Difference]: Finished difference. Result has 104 places, 0 transitions, 0 flow [2022-01-19 07:37:49,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=104, PETRI_TRANSITIONS=0} [2022-01-19 07:37:49,136 INFO L334 CegarLoopForPetriNet]: 80 programPoint places, 24 predicate places. [2022-01-19 07:37:49,136 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 0 transitions, 0 flow [2022-01-19 07:37:49,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 07:37:49,138 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 07:37:49,138 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 07:37:49,139 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 07:37:49,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 07:37:49,142 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2022-01-19 07:37:49,144 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 07:37:49,144 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 07:37:49,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 07:37:49 BasicIcfg [2022-01-19 07:37:49,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 07:37:49,149 INFO L158 Benchmark]: Toolchain (without parser) took 5591.41ms. Allocated memory was 385.9MB in the beginning and 528.5MB in the end (delta: 142.6MB). Free memory was 329.0MB in the beginning and 254.4MB in the end (delta: 74.6MB). Peak memory consumption was 217.6MB. Max. memory is 16.0GB. [2022-01-19 07:37:49,149 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory was 345.7MB in the beginning and 345.5MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 07:37:49,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.16ms. Allocated memory was 385.9MB in the beginning and 528.5MB in the end (delta: 142.6MB). Free memory was 328.9MB in the beginning and 498.1MB in the end (delta: -169.2MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. [2022-01-19 07:37:49,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.52ms. Allocated memory is still 528.5MB. Free memory was 498.1MB in the beginning and 496.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:37:49,153 INFO L158 Benchmark]: Boogie Preprocessor took 30.89ms. Allocated memory is still 528.5MB. Free memory was 496.0MB in the beginning and 494.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 07:37:49,153 INFO L158 Benchmark]: RCFGBuilder took 314.96ms. Allocated memory is still 528.5MB. Free memory was 494.9MB in the beginning and 480.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 07:37:49,154 INFO L158 Benchmark]: TraceAbstraction took 4900.99ms. Allocated memory is still 528.5MB. Free memory was 479.2MB in the beginning and 254.4MB in the end (delta: 224.8MB). Peak memory consumption was 224.8MB. Max. memory is 16.0GB. [2022-01-19 07:37:49,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory was 345.7MB in the beginning and 345.5MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 300.16ms. Allocated memory was 385.9MB in the beginning and 528.5MB in the end (delta: 142.6MB). Free memory was 328.9MB in the beginning and 498.1MB in the end (delta: -169.2MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.52ms. Allocated memory is still 528.5MB. Free memory was 498.1MB in the beginning and 496.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.89ms. Allocated memory is still 528.5MB. Free memory was 496.0MB in the beginning and 494.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 314.96ms. Allocated memory is still 528.5MB. Free memory was 494.9MB in the beginning and 480.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4900.99ms. Allocated memory is still 528.5MB. Free memory was 479.2MB in the beginning and 254.4MB in the end (delta: 224.8MB). Peak memory consumption was 224.8MB. 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: 101]: 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, 113 locations, 3 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: 4.8s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 157 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 276 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 541 IncrementalHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 58 mSDtfsCounter, 541 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 480 SyntacticMatches, 20 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=9, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 981 NumberOfCodeBlocks, 981 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1205 ConstructedInterpolants, 0 QuantifiedInterpolants, 3680 SizeOfPredicates, 6 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 65/164 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 07:37:49,187 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...