/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:52:37,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:52:37,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:52:37,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:52:37,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:52:37,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:52:37,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:52:37,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:52:37,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:52:37,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:52:37,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:52:37,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:52:37,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:52:37,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:52:37,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:52:37,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:52:37,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:52:37,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:52:37,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:52:37,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:52:37,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:52:37,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:52:37,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:52:37,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:52:37,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:52:37,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:52:37,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:52:37,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:52:37,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:52:37,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:52:37,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:52:37,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:52:37,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:52:37,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:52:37,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:52:37,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:52:37,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:52:37,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:52:37,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:52:37,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:52:37,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:52:37,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-18 22:52:37,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:52:37,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:52:37,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:52:37,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:52:37,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:52:37,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:52:37,900 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:52:37,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:52:37,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:52:37,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:52:37,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:52:37,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:52:37,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:52:37,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:52:37,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:52:37,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:52:37,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:52:37,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:52:37,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:52:38,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:52:38,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:52:38,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:52:38,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:52:38,149 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:52:38,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-01-18 22:52:38,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ad0ee3b/74bbe7f560744e4d961d83d7cd8e06bd/FLAG93412a256 [2022-01-18 22:52:38,599 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:52:38,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2022-01-18 22:52:38,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ad0ee3b/74bbe7f560744e4d961d83d7cd8e06bd/FLAG93412a256 [2022-01-18 22:52:38,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ad0ee3b/74bbe7f560744e4d961d83d7cd8e06bd [2022-01-18 22:52:38,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:52:38,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:52:38,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:52:38,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:52:38,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:52:38,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:52:38" (1/1) ... [2022-01-18 22:52:38,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14602b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:38, skipping insertion in model container [2022-01-18 22:52:38,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:52:38" (1/1) ... [2022-01-18 22:52:38,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:52:38,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:52:39,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-01-18 22:52:39,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:52:39,252 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:52:39,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i[945,958] [2022-01-18 22:52:39,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:52:39,340 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:52:39,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39 WrapperNode [2022-01-18 22:52:39,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:52:39,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:52:39,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:52:39,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:52:39,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,394 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-18 22:52:39,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:52:39,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:52:39,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:52:39,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:52:39,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:52:39,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:52:39,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:52:39,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:52:39,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (1/1) ... [2022-01-18 22:52:39,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:52:39,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:52:39,460 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) [2022-01-18 22:52:39,472 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 [2022-01-18 22:52:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:52:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:52:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:52:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:52:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:52:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:52:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:52:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:52:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:52:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:52:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:52:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:52:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:52:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:52:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:52:39,501 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:52:39,610 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:52:39,611 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:52:39,781 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:52:39,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:52:39,786 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:52:39,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:52:39 BoogieIcfgContainer [2022-01-18 22:52:39,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:52:39,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:52:39,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:52:39,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:52:39,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:52:38" (1/3) ... [2022-01-18 22:52:39,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38101238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:52:39, skipping insertion in model container [2022-01-18 22:52:39,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:39" (2/3) ... [2022-01-18 22:52:39,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38101238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:52:39, skipping insertion in model container [2022-01-18 22:52:39,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:52:39" (3/3) ... [2022-01-18 22:52:39,794 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2022-01-18 22:52:39,798 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:52:39,798 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:52:39,798 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:52:39,849 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,850 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,850 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,850 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,850 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,850 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,850 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,851 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,851 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,852 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,852 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,852 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,852 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,853 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,854 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,854 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,855 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,855 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,855 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,855 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,855 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,856 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,856 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,856 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,856 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,856 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,857 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,858 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,861 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,861 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,861 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,861 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,868 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,868 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,868 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,868 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,870 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,870 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,870 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,870 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:39,871 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:52:39,927 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:52:39,942 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 [2022-01-18 22:52:39,942 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 22:52:39,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-01-18 22:52:40,002 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-01-18 22:52:40,003 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:52:40,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-01-18 22:52:40,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-01-18 22:52:40,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-01-18 22:52:40,036 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2022-01-18 22:52:40,036 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:52:40,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:40,037 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] [2022-01-18 22:52:40,037 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1419924202, now seen corresponding path program 1 times [2022-01-18 22:52:40,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:40,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656621700] [2022-01-18 22:52:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:40,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:40,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:40,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656621700] [2022-01-18 22:52:40,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656621700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:40,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:40,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:40,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512287095] [2022-01-18 22:52:40,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:40,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:40,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:40,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-01-18 22:52:40,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2022-01-18 22:52:40,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:40,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-01-18 22:52:40,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:40,980 INFO L129 PetriNetUnfolder]: 178/534 cut-off events. [2022-01-18 22:52:40,980 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-18 22:52:40,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 534 events. 178/534 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2896 event pairs, 26 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 845. Up to 117 conditions per place. [2022-01-18 22:52:40,990 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 19 selfloop transitions, 5 changer transitions 35/115 dead transitions. [2022-01-18 22:52:40,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 357 flow [2022-01-18 22:52:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:52:41,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:52:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2022-01-18 22:52:41,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-18 22:52:41,021 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2022-01-18 22:52:41,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2022-01-18 22:52:41,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:41,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2022-01-18 22:52:41,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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) [2022-01-18 22:52:41,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-01-18 22:52:41,038 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-01-18 22:52:41,040 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 975 transitions. [2022-01-18 22:52:41,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 357 flow [2022-01-18 22:52:41,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-18 22:52:41,045 INFO L242 Difference]: Finished difference. Result has 103 places, 75 transitions, 222 flow [2022-01-18 22:52:41,047 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2022-01-18 22:52:41,050 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-01-18 22:52:41,051 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 222 flow [2022-01-18 22:52:41,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 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) [2022-01-18 22:52:41,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:41,051 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] [2022-01-18 22:52:41,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:52:41,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash 273314153, now seen corresponding path program 1 times [2022-01-18 22:52:41,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:41,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66256448] [2022-01-18 22:52:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:41,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:41,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:41,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66256448] [2022-01-18 22:52:41,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66256448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:41,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:41,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:41,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261885715] [2022-01-18 22:52:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:41,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:41,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:41,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-01-18 22:52:41,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-01-18 22:52:41,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:41,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-01-18 22:52:41,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:41,430 INFO L129 PetriNetUnfolder]: 99/391 cut-off events. [2022-01-18 22:52:41,431 INFO L130 PetriNetUnfolder]: For 830/961 co-relation queries the response was YES. [2022-01-18 22:52:41,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 391 events. 99/391 cut-off events. For 830/961 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1965 event pairs, 10 based on Foata normal form. 12/392 useless extension candidates. Maximal degree in co-relation 1125. Up to 95 conditions per place. [2022-01-18 22:52:41,435 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 21 selfloop transitions, 12 changer transitions 34/123 dead transitions. [2022-01-18 22:52:41,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 704 flow [2022-01-18 22:52:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:52:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:52:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 977 transitions. [2022-01-18 22:52:41,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8350427350427351 [2022-01-18 22:52:41,439 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 977 transitions. [2022-01-18 22:52:41,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 977 transitions. [2022-01-18 22:52:41,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:41,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 977 transitions. [2022-01-18 22:52:41,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.15384615384616) internal successors, (977), 13 states have internal predecessors, (977), 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) [2022-01-18 22:52:41,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-01-18 22:52:41,445 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-01-18 22:52:41,445 INFO L186 Difference]: Start difference. First operand has 103 places, 75 transitions, 222 flow. Second operand 13 states and 977 transitions. [2022-01-18 22:52:41,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 704 flow [2022-01-18 22:52:41,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 123 transitions, 652 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-01-18 22:52:41,477 INFO L242 Difference]: Finished difference. Result has 113 places, 80 transitions, 311 flow [2022-01-18 22:52:41,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=311, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2022-01-18 22:52:41,478 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2022-01-18 22:52:41,478 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 311 flow [2022-01-18 22:52:41,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2022-01-18 22:52:41,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:41,478 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, 1, 1, 1, 1] [2022-01-18 22:52:41,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:52:41,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1950295604, now seen corresponding path program 1 times [2022-01-18 22:52:41,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:41,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992975031] [2022-01-18 22:52:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:41,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:41,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:41,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992975031] [2022-01-18 22:52:41,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992975031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:41,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:41,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:41,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724482070] [2022-01-18 22:52:41,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:41,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:41,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:41,633 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2022-01-18 22:52:41,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2022-01-18 22:52:41,634 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:41,634 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2022-01-18 22:52:41,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:41,752 INFO L129 PetriNetUnfolder]: 62/351 cut-off events. [2022-01-18 22:52:41,752 INFO L130 PetriNetUnfolder]: For 1076/1308 co-relation queries the response was YES. [2022-01-18 22:52:41,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 351 events. 62/351 cut-off events. For 1076/1308 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1940 event pairs, 24 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 1025. Up to 67 conditions per place. [2022-01-18 22:52:41,755 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 15 selfloop transitions, 6 changer transitions 15/95 dead transitions. [2022-01-18 22:52:41,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 512 flow [2022-01-18 22:52:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:52:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:52:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-01-18 22:52:41,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8507936507936508 [2022-01-18 22:52:41,757 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-01-18 22:52:41,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-01-18 22:52:41,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:41,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-01-18 22:52:41,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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) [2022-01-18 22:52:41,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-01-18 22:52:41,761 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-01-18 22:52:41,761 INFO L186 Difference]: Start difference. First operand has 113 places, 80 transitions, 311 flow. Second operand 7 states and 536 transitions. [2022-01-18 22:52:41,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 95 transitions, 512 flow [2022-01-18 22:52:41,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 470 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-01-18 22:52:41,768 INFO L242 Difference]: Finished difference. Result has 102 places, 78 transitions, 288 flow [2022-01-18 22:52:41,768 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=288, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2022-01-18 22:52:41,770 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2022-01-18 22:52:41,770 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 288 flow [2022-01-18 22:52:41,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2022-01-18 22:52:41,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:41,771 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] [2022-01-18 22:52:41,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:52:41,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2131656236, now seen corresponding path program 2 times [2022-01-18 22:52:41,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:41,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335044238] [2022-01-18 22:52:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:41,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:41,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:41,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335044238] [2022-01-18 22:52:41,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335044238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:41,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:41,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:52:41,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221280017] [2022-01-18 22:52:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:41,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:52:41,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:52:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:52:41,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:41,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-01-18 22:52:41,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:41,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:41,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:42,097 INFO L129 PetriNetUnfolder]: 374/995 cut-off events. [2022-01-18 22:52:42,097 INFO L130 PetriNetUnfolder]: For 624/644 co-relation queries the response was YES. [2022-01-18 22:52:42,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 995 events. 374/995 cut-off events. For 624/644 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6945 event pairs, 26 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2089. Up to 246 conditions per place. [2022-01-18 22:52:42,106 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 29 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2022-01-18 22:52:42,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 110 transitions, 448 flow [2022-01-18 22:52:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-01-18 22:52:42,108 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-01-18 22:52:42,108 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-01-18 22:52:42,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-01-18 22:52:42,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:42,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-01-18 22:52:42,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 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) [2022-01-18 22:52:42,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2022-01-18 22:52:42,112 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 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) [2022-01-18 22:52:42,113 INFO L186 Difference]: Start difference. First operand has 102 places, 78 transitions, 288 flow. Second operand 10 states and 778 transitions. [2022-01-18 22:52:42,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 110 transitions, 448 flow [2022-01-18 22:52:42,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 110 transitions, 413 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-01-18 22:52:42,119 INFO L242 Difference]: Finished difference. Result has 107 places, 93 transitions, 373 flow [2022-01-18 22:52:42,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2022-01-18 22:52:42,121 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2022-01-18 22:52:42,121 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 373 flow [2022-01-18 22:52:42,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 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) [2022-01-18 22:52:42,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:42,121 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] [2022-01-18 22:52:42,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:52:42,122 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 243950234, now seen corresponding path program 1 times [2022-01-18 22:52:42,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:42,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698576606] [2022-01-18 22:52:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:42,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:42,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698576606] [2022-01-18 22:52:42,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698576606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:42,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:42,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:42,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883249650] [2022-01-18 22:52:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:42,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:42,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:42,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:42,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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) [2022-01-18 22:52:42,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:42,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:42,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:42,494 INFO L129 PetriNetUnfolder]: 332/917 cut-off events. [2022-01-18 22:52:42,494 INFO L130 PetriNetUnfolder]: For 2156/2286 co-relation queries the response was YES. [2022-01-18 22:52:42,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 917 events. 332/917 cut-off events. For 2156/2286 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6643 event pairs, 4 based on Foata normal form. 56/912 useless extension candidates. Maximal degree in co-relation 3036. Up to 338 conditions per place. [2022-01-18 22:52:42,502 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 32 changer transitions 9/131 dead transitions. [2022-01-18 22:52:42,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 131 transitions, 743 flow [2022-01-18 22:52:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:52:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:52:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2022-01-18 22:52:42,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.864957264957265 [2022-01-18 22:52:42,505 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2022-01-18 22:52:42,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2022-01-18 22:52:42,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:42,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2022-01-18 22:52:42,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 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) [2022-01-18 22:52:42,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-01-18 22:52:42,513 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 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) [2022-01-18 22:52:42,513 INFO L186 Difference]: Start difference. First operand has 107 places, 93 transitions, 373 flow. Second operand 13 states and 1012 transitions. [2022-01-18 22:52:42,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 131 transitions, 743 flow [2022-01-18 22:52:42,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 131 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 22:52:42,521 INFO L242 Difference]: Finished difference. Result has 122 places, 113 transitions, 614 flow [2022-01-18 22:52:42,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=122, PETRI_TRANSITIONS=113} [2022-01-18 22:52:42,523 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 40 predicate places. [2022-01-18 22:52:42,524 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 113 transitions, 614 flow [2022-01-18 22:52:42,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 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) [2022-01-18 22:52:42,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:42,524 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] [2022-01-18 22:52:42,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:52:42,525 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1857817141, now seen corresponding path program 1 times [2022-01-18 22:52:42,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:42,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720400639] [2022-01-18 22:52:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:42,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:42,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:42,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720400639] [2022-01-18 22:52:42,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720400639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:42,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:42,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:52:42,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187509616] [2022-01-18 22:52:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:42,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:52:42,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:52:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:52:42,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:42,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 113 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2022-01-18 22:52:42,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:42,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:42,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:42,931 INFO L129 PetriNetUnfolder]: 259/796 cut-off events. [2022-01-18 22:52:42,931 INFO L130 PetriNetUnfolder]: For 3199/3365 co-relation queries the response was YES. [2022-01-18 22:52:42,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 796 events. 259/796 cut-off events. For 3199/3365 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6012 event pairs, 0 based on Foata normal form. 61/799 useless extension candidates. Maximal degree in co-relation 3165. Up to 269 conditions per place. [2022-01-18 22:52:42,938 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 36 changer transitions 20/142 dead transitions. [2022-01-18 22:52:42,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 956 flow [2022-01-18 22:52:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 22:52:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-18 22:52:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1230 transitions. [2022-01-18 22:52:42,941 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2022-01-18 22:52:42,941 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1230 transitions. [2022-01-18 22:52:42,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1230 transitions. [2022-01-18 22:52:42,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:42,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1230 transitions. [2022-01-18 22:52:42,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.875) internal successors, (1230), 16 states have internal predecessors, (1230), 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) [2022-01-18 22:52:42,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 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) [2022-01-18 22:52:42,947 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 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) [2022-01-18 22:52:42,947 INFO L186 Difference]: Start difference. First operand has 122 places, 113 transitions, 614 flow. Second operand 16 states and 1230 transitions. [2022-01-18 22:52:42,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 956 flow [2022-01-18 22:52:42,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 142 transitions, 793 flow, removed 67 selfloop flow, removed 7 redundant places. [2022-01-18 22:52:42,965 INFO L242 Difference]: Finished difference. Result has 137 places, 113 transitions, 601 flow [2022-01-18 22:52:42,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=601, PETRI_PLACES=137, PETRI_TRANSITIONS=113} [2022-01-18 22:52:42,966 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 55 predicate places. [2022-01-18 22:52:42,966 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 113 transitions, 601 flow [2022-01-18 22:52:42,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 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) [2022-01-18 22:52:42,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:42,967 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] [2022-01-18 22:52:42,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:52:42,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash -290666129, now seen corresponding path program 1 times [2022-01-18 22:52:42,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704746380] [2022-01-18 22:52:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:42,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:43,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:43,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704746380] [2022-01-18 22:52:43,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704746380] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:43,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:43,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:43,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951198160] [2022-01-18 22:52:43,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:43,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:43,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:43,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:43,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 113 transitions, 601 flow. Second operand has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 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) [2022-01-18 22:52:43,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:43,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:43,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:43,166 INFO L129 PetriNetUnfolder]: 180/778 cut-off events. [2022-01-18 22:52:43,166 INFO L130 PetriNetUnfolder]: For 1682/1719 co-relation queries the response was YES. [2022-01-18 22:52:43,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 778 events. 180/778 cut-off events. For 1682/1719 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6489 event pairs, 0 based on Foata normal form. 1/731 useless extension candidates. Maximal degree in co-relation 2231. Up to 103 conditions per place. [2022-01-18 22:52:43,171 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-01-18 22:52:43,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 114 transitions, 647 flow [2022-01-18 22:52:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:52:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:52:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2022-01-18 22:52:43,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8365079365079365 [2022-01-18 22:52:43,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2022-01-18 22:52:43,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2022-01-18 22:52:43,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:43,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2022-01-18 22:52:43,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2022-01-18 22:52:43,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-01-18 22:52:43,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-01-18 22:52:43,176 INFO L186 Difference]: Start difference. First operand has 137 places, 113 transitions, 601 flow. Second operand 7 states and 527 transitions. [2022-01-18 22:52:43,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 114 transitions, 647 flow [2022-01-18 22:52:43,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 572 flow, removed 13 selfloop flow, removed 14 redundant places. [2022-01-18 22:52:43,191 INFO L242 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2022-01-18 22:52:43,191 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2022-01-18 22:52:43,192 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 42 predicate places. [2022-01-18 22:52:43,192 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2022-01-18 22:52:43,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 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) [2022-01-18 22:52:43,194 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 22:52:43,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 22:52:43,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 22:52:43,195 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 22:52:43,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:52:43,198 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-01-18 22:52:43,200 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:52:43,200 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:52:43,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:52:43 BasicIcfg [2022-01-18 22:52:43,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:52:43,203 INFO L158 Benchmark]: Toolchain (without parser) took 4263.65ms. Allocated memory was 358.6MB in the beginning and 465.6MB in the end (delta: 107.0MB). Free memory was 300.7MB in the beginning and 332.4MB in the end (delta: -31.7MB). Peak memory consumption was 78.2MB. Max. memory is 16.0GB. [2022-01-18 22:52:43,203 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 317.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:52:43,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.52ms. Allocated memory was 358.6MB in the beginning and 465.6MB in the end (delta: 107.0MB). Free memory was 300.4MB in the beginning and 427.1MB in the end (delta: -126.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. [2022-01-18 22:52:43,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.19ms. Allocated memory is still 465.6MB. Free memory was 427.1MB in the beginning and 425.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:52:43,204 INFO L158 Benchmark]: Boogie Preprocessor took 24.19ms. Allocated memory is still 465.6MB. Free memory was 425.0MB in the beginning and 423.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:52:43,205 INFO L158 Benchmark]: RCFGBuilder took 368.17ms. Allocated memory is still 465.6MB. Free memory was 423.8MB in the beginning and 410.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 22:52:43,205 INFO L158 Benchmark]: TraceAbstraction took 3413.62ms. Allocated memory is still 465.6MB. Free memory was 410.3MB in the beginning and 332.4MB in the end (delta: 77.8MB). Peak memory consumption was 80.9MB. Max. memory is 16.0GB. [2022-01-18 22:52:43,207 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 358.6MB. Free memory is still 317.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 400.52ms. Allocated memory was 358.6MB in the beginning and 465.6MB in the end (delta: 107.0MB). Free memory was 300.4MB in the beginning and 427.1MB in the end (delta: -126.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.19ms. Allocated memory is still 465.6MB. Free memory was 427.1MB in the beginning and 425.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.19ms. Allocated memory is still 465.6MB. Free memory was 425.0MB in the beginning and 423.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 368.17ms. Allocated memory is still 465.6MB. Free memory was 423.8MB in the beginning and 410.3MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3413.62ms. Allocated memory is still 465.6MB. Free memory was 410.3MB in the beginning and 332.4MB in the end (delta: 77.8MB). Peak memory consumption was 80.9MB. 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: 18]: 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 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 342 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 449 IncrementalHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 79 mSDtfsCounter, 449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=5, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 1520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:52:43,240 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...