/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 12:41:37,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 12:41:37,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 12:41:37,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 12:41:37,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 12:41:37,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 12:41:37,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 12:41:37,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 12:41:37,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 12:41:37,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 12:41:37,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 12:41:37,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 12:41:37,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 12:41:37,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 12:41:37,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 12:41:37,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 12:41:37,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 12:41:37,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 12:41:37,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 12:41:37,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 12:41:37,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 12:41:37,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 12:41:37,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 12:41:37,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 12:41:37,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 12:41:37,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 12:41:37,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 12:41:37,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 12:41:37,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 12:41:37,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 12:41:37,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 12:41:37,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 12:41:37,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 12:41:37,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 12:41:37,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 12:41:37,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 12:41:37,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 12:41:37,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 12:41:37,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 12:41:37,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 12:41:37,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 12:41:37,837 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-After.epf [2022-01-19 12:41:37,870 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 12:41:37,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 12:41:37,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 12:41:37,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 12:41:37,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 12:41:37,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 12:41:37,874 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 12:41:37,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 12:41:37,875 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 12:41:37,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 12:41:37,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 12:41:37,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 12:41:37,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 12:41:37,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 12:41:37,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 12:41:37,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 12:41:37,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:41:37,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 12:41:37,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 12:41:37,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 12:41:37,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 12:41:37,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 12:41:37,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 12:41:37,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 12:41:37,879 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 12:41:37,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 12:41:38,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 12:41:38,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 12:41:38,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 12:41:38,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 12:41:38,088 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 12:41:38,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2022-01-19 12:41:38,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3459fe9dd/3472662c7bca48c58c03bec85f7d5433/FLAG5f94fa407 [2022-01-19 12:41:38,484 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 12:41:38,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2022-01-19 12:41:38,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3459fe9dd/3472662c7bca48c58c03bec85f7d5433/FLAG5f94fa407 [2022-01-19 12:41:38,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3459fe9dd/3472662c7bca48c58c03bec85f7d5433 [2022-01-19 12:41:38,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 12:41:38,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 12:41:38,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 12:41:38,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 12:41:38,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 12:41:38,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:41:38" (1/1) ... [2022-01-19 12:41:38,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a90438b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:38, skipping insertion in model container [2022-01-19 12:41:38,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:41:38" (1/1) ... [2022-01-19 12:41:38,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 12:41:38,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 12:41:39,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-01-19 12:41:39,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:41:39,132 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 12:41:39,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-01-19 12:41:39,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 12:41:39,178 INFO L208 MainTranslator]: Completed translation [2022-01-19 12:41:39,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39 WrapperNode [2022-01-19 12:41:39,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 12:41:39,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 12:41:39,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 12:41:39,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 12:41:39,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,206 INFO L137 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-01-19 12:41:39,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 12:41:39,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 12:41:39,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 12:41:39,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 12:41:39,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 12:41:39,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 12:41:39,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 12:41:39,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 12:41:39,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (1/1) ... [2022-01-19 12:41:39,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 12:41:39,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:41:39,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 12:41:39,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 12:41:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 12:41:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 12:41:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 12:41:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 12:41:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 12:41:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 12:41:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 12:41:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-19 12:41:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-19 12:41:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 12:41:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 12:41:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 12:41:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 12:41:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 12:41:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 12:41:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 12:41:39,326 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 12:41:39,416 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 12:41:39,417 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 12:41:39,590 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 12:41:39,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 12:41:39,598 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 12:41:39,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:41:39 BoogieIcfgContainer [2022-01-19 12:41:39,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 12:41:39,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 12:41:39,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 12:41:39,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 12:41:39,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:41:38" (1/3) ... [2022-01-19 12:41:39,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa89753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:41:39, skipping insertion in model container [2022-01-19 12:41:39,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:41:39" (2/3) ... [2022-01-19 12:41:39,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa89753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:41:39, skipping insertion in model container [2022-01-19 12:41:39,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:41:39" (3/3) ... [2022-01-19 12:41:39,606 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-01-19 12:41:39,610 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 12:41:39,610 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 12:41:39,610 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 12:41:39,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,655 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,656 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,659 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,662 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,663 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,663 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,663 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,666 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,666 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,667 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,667 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,672 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,672 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,674 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,674 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,677 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,677 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 12:41:39,685 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-19 12:41:39,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 12:41:39,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 12:41:39,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 12:41:39,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-01-19 12:41:39,851 INFO L129 PetriNetUnfolder]: 10/145 cut-off events. [2022-01-19 12:41:39,851 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 12:41:39,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-01-19 12:41:39,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-01-19 12:41:39,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-01-19 12:41:39,914 INFO L129 PetriNetUnfolder]: 10/131 cut-off events. [2022-01-19 12:41:39,914 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-01-19 12:41:39,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:39,915 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:39,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1414166451, now seen corresponding path program 1 times [2022-01-19 12:41:39,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:39,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054048603] [2022-01-19 12:41:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:39,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:40,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:40,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054048603] [2022-01-19 12:41:40,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054048603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:40,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:40,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 12:41:40,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255658046] [2022-01-19 12:41:40,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:40,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 12:41:40,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 12:41:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 12:41:40,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2022-01-19 12:41:40,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:40,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:40,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2022-01-19 12:41:40,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:40,244 INFO L129 PetriNetUnfolder]: 4/126 cut-off events. [2022-01-19 12:41:40,245 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 12:41:40,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2022-01-19 12:41:40,247 INFO L132 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2022-01-19 12:41:40,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2022-01-19 12:41:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 12:41:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 12:41:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2022-01-19 12:41:40,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2022-01-19 12:41:40,259 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2022-01-19 12:41:40,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2022-01-19 12:41:40,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:40,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2022-01-19 12:41:40,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:40,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:40,274 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:40,275 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2022-01-19 12:41:40,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2022-01-19 12:41:40,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-01-19 12:41:40,282 INFO L242 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2022-01-19 12:41:40,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-01-19 12:41:40,286 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2022-01-19 12:41:40,286 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2022-01-19 12:41:40,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:40,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:40,287 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:40,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 12:41:40,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:40,288 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2022-01-19 12:41:40,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:40,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45307964] [2022-01-19 12:41:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:40,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:40,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:40,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45307964] [2022-01-19 12:41:40,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45307964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:40,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:40,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:41:40,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431112101] [2022-01-19 12:41:40,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:40,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:41:40,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:40,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:41:40,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:41:40,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-01-19 12:41:40,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:40,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:40,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-01-19 12:41:40,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:43,820 INFO L129 PetriNetUnfolder]: 24847/33594 cut-off events. [2022-01-19 12:41:43,821 INFO L130 PetriNetUnfolder]: For 860/935 co-relation queries the response was YES. [2022-01-19 12:41:43,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 33594 events. 24847/33594 cut-off events. For 860/935 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 189881 event pairs, 11708 based on Foata normal form. 1/29807 useless extension candidates. Maximal degree in co-relation 67679. Up to 32788 conditions per place. [2022-01-19 12:41:44,081 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2022-01-19 12:41:44,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2022-01-19 12:41:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:41:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:41:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2022-01-19 12:41:44,086 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2022-01-19 12:41:44,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2022-01-19 12:41:44,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2022-01-19 12:41:44,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:44,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2022-01-19 12:41:44,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:44,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:44,094 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:44,094 INFO L186 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2022-01-19 12:41:44,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2022-01-19 12:41:44,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 12:41:44,098 INFO L242 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2022-01-19 12:41:44,098 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-01-19 12:41:44,099 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-01-19 12:41:44,099 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2022-01-19 12:41:44,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:44,100 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:44,100 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:44,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 12:41:44,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:44,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1435785726, now seen corresponding path program 1 times [2022-01-19 12:41:44,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:44,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038470185] [2022-01-19 12:41:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:44,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:44,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:44,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038470185] [2022-01-19 12:41:44,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038470185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:44,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:44,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:44,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140958558] [2022-01-19 12:41:44,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:44,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:44,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:44,336 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:41:44,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:44,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:44,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:41:44,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:47,004 INFO L129 PetriNetUnfolder]: 24821/33501 cut-off events. [2022-01-19 12:41:47,004 INFO L130 PetriNetUnfolder]: For 3786/3861 co-relation queries the response was YES. [2022-01-19 12:41:47,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71364 conditions, 33501 events. 24821/33501 cut-off events. For 3786/3861 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 189180 event pairs, 11557 based on Foata normal form. 0/29743 useless extension candidates. Maximal degree in co-relation 71357. Up to 32790 conditions per place. [2022-01-19 12:41:47,203 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 81 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2022-01-19 12:41:47,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 155 transitions, 554 flow [2022-01-19 12:41:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2022-01-19 12:41:47,205 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6297539149888143 [2022-01-19 12:41:47,205 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2022-01-19 12:41:47,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2022-01-19 12:41:47,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:47,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2022-01-19 12:41:47,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:47,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:47,209 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:47,209 INFO L186 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 6 states and 563 transitions. [2022-01-19 12:41:47,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 155 transitions, 554 flow [2022-01-19 12:41:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 155 transitions, 539 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-01-19 12:41:47,214 INFO L242 Difference]: Finished difference. Result has 135 places, 132 transitions, 337 flow [2022-01-19 12:41:47,214 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2022-01-19 12:41:47,215 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-01-19 12:41:47,215 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 337 flow [2022-01-19 12:41:47,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:47,216 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:47,216 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:47,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 12:41:47,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -678323914, now seen corresponding path program 2 times [2022-01-19 12:41:47,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:47,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039960427] [2022-01-19 12:41:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:47,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:47,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:47,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039960427] [2022-01-19 12:41:47,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039960427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:47,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:47,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:47,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418101723] [2022-01-19 12:41:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:47,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:47,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:47,461 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:41:47,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:47,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:47,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:41:47,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:49,567 INFO L129 PetriNetUnfolder]: 24709/33724 cut-off events. [2022-01-19 12:41:49,567 INFO L130 PetriNetUnfolder]: For 7516/7601 co-relation queries the response was YES. [2022-01-19 12:41:49,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75024 conditions, 33724 events. 24709/33724 cut-off events. For 7516/7601 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 194599 event pairs, 12405 based on Foata normal form. 37/31819 useless extension candidates. Maximal degree in co-relation 75017. Up to 32735 conditions per place. [2022-01-19 12:41:49,766 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 82 selfloop transitions, 13 changer transitions 1/158 dead transitions. [2022-01-19 12:41:49,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 158 transitions, 613 flow [2022-01-19 12:41:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-01-19 12:41:49,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-01-19 12:41:49,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-01-19 12:41:49,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-01-19 12:41:49,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:49,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-01-19 12:41:49,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:49,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:49,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:49,776 INFO L186 Difference]: Start difference. First operand has 135 places, 132 transitions, 337 flow. Second operand 6 states and 562 transitions. [2022-01-19 12:41:49,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 158 transitions, 613 flow [2022-01-19 12:41:49,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 158 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:41:49,783 INFO L242 Difference]: Finished difference. Result has 138 places, 136 transitions, 384 flow [2022-01-19 12:41:49,783 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=138, PETRI_TRANSITIONS=136} [2022-01-19 12:41:49,784 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 3 predicate places. [2022-01-19 12:41:49,784 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 136 transitions, 384 flow [2022-01-19 12:41:49,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:49,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:49,785 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:49,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 12:41:49,785 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash 34940876, now seen corresponding path program 3 times [2022-01-19 12:41:49,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:49,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21544954] [2022-01-19 12:41:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:49,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:50,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:50,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21544954] [2022-01-19 12:41:50,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21544954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:50,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:50,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:41:50,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763269292] [2022-01-19 12:41:50,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:50,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:41:50,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:50,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:41:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:41:50,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:41:50,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 136 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:50,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:50,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:41:50,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:52,477 INFO L129 PetriNetUnfolder]: 27400/37091 cut-off events. [2022-01-19 12:41:52,477 INFO L130 PetriNetUnfolder]: For 14775/14847 co-relation queries the response was YES. [2022-01-19 12:41:52,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85484 conditions, 37091 events. 27400/37091 cut-off events. For 14775/14847 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 215849 event pairs, 8744 based on Foata normal form. 902/35852 useless extension candidates. Maximal degree in co-relation 85475. Up to 29078 conditions per place. [2022-01-19 12:41:52,675 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 111 selfloop transitions, 15 changer transitions 1/189 dead transitions. [2022-01-19 12:41:52,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 189 transitions, 783 flow [2022-01-19 12:41:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:41:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:41:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2022-01-19 12:41:52,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2022-01-19 12:41:52,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2022-01-19 12:41:52,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2022-01-19 12:41:52,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:52,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2022-01-19 12:41:52,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:52,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:52,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:52,690 INFO L186 Difference]: Start difference. First operand has 138 places, 136 transitions, 384 flow. Second operand 7 states and 670 transitions. [2022-01-19 12:41:52,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 189 transitions, 783 flow [2022-01-19 12:41:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 189 transitions, 760 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-01-19 12:41:52,702 INFO L242 Difference]: Finished difference. Result has 143 places, 137 transitions, 418 flow [2022-01-19 12:41:52,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2022-01-19 12:41:52,705 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 8 predicate places. [2022-01-19 12:41:52,706 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 418 flow [2022-01-19 12:41:52,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:52,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:52,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:52,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 12:41:52,707 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1082751602, now seen corresponding path program 1 times [2022-01-19 12:41:52,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288354453] [2022-01-19 12:41:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:52,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:52,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:52,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288354453] [2022-01-19 12:41:52,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288354453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:52,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:52,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:52,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793884083] [2022-01-19 12:41:52,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:52,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:52,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:52,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:52,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:52,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:41:52,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:52,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:52,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:41:52,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:55,519 INFO L129 PetriNetUnfolder]: 27379/39351 cut-off events. [2022-01-19 12:41:55,520 INFO L130 PetriNetUnfolder]: For 21988/22051 co-relation queries the response was YES. [2022-01-19 12:41:55,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91342 conditions, 39351 events. 27379/39351 cut-off events. For 21988/22051 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 259709 event pairs, 14648 based on Foata normal form. 0/37227 useless extension candidates. Maximal degree in co-relation 91332. Up to 36326 conditions per place. [2022-01-19 12:41:55,739 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 89 selfloop transitions, 21 changer transitions 1/173 dead transitions. [2022-01-19 12:41:55,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 173 transitions, 838 flow [2022-01-19 12:41:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:55,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2022-01-19 12:41:55,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6308724832214765 [2022-01-19 12:41:55,742 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2022-01-19 12:41:55,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2022-01-19 12:41:55,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:55,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2022-01-19 12:41:55,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:55,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:55,745 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:55,745 INFO L186 Difference]: Start difference. First operand has 143 places, 137 transitions, 418 flow. Second operand 6 states and 564 transitions. [2022-01-19 12:41:55,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 173 transitions, 838 flow [2022-01-19 12:41:55,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 173 transitions, 809 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:41:55,756 INFO L242 Difference]: Finished difference. Result has 146 places, 147 transitions, 548 flow [2022-01-19 12:41:55,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2022-01-19 12:41:55,759 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 11 predicate places. [2022-01-19 12:41:55,759 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 548 flow [2022-01-19 12:41:55,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:55,765 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:55,765 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:55,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 12:41:55,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash 267422604, now seen corresponding path program 2 times [2022-01-19 12:41:55,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:55,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127037868] [2022-01-19 12:41:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:55,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:55,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:55,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127037868] [2022-01-19 12:41:55,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127037868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:41:55,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:41:55,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 12:41:55,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862749348] [2022-01-19 12:41:55,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:41:55,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 12:41:55,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:41:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 12:41:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-19 12:41:55,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:41:55,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:55,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:41:55,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:41:55,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:41:58,588 INFO L129 PetriNetUnfolder]: 27326/39130 cut-off events. [2022-01-19 12:41:58,588 INFO L130 PetriNetUnfolder]: For 24540/24603 co-relation queries the response was YES. [2022-01-19 12:41:58,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94991 conditions, 39130 events. 27326/39130 cut-off events. For 24540/24603 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 253803 event pairs, 17526 based on Foata normal form. 20/38872 useless extension candidates. Maximal degree in co-relation 94978. Up to 36297 conditions per place. [2022-01-19 12:41:58,821 INFO L132 encePairwiseOnDemand]: 138/149 looper letters, 90 selfloop transitions, 17 changer transitions 2/171 dead transitions. [2022-01-19 12:41:58,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 171 transitions, 844 flow [2022-01-19 12:41:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 12:41:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 12:41:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-01-19 12:41:58,824 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-01-19 12:41:58,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-01-19 12:41:58,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-01-19 12:41:58,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:41:58,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-01-19 12:41:58,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:58,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:58,832 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:58,832 INFO L186 Difference]: Start difference. First operand has 146 places, 147 transitions, 548 flow. Second operand 6 states and 562 transitions. [2022-01-19 12:41:58,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 171 transitions, 844 flow [2022-01-19 12:41:58,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 171 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 12:41:58,845 INFO L242 Difference]: Finished difference. Result has 150 places, 145 transitions, 550 flow [2022-01-19 12:41:58,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=150, PETRI_TRANSITIONS=145} [2022-01-19 12:41:58,846 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 15 predicate places. [2022-01-19 12:41:58,846 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 145 transitions, 550 flow [2022-01-19 12:41:58,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:41:58,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:41:58,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:41:58,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 12:41:58,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:41:58,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:41:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash 620717378, now seen corresponding path program 1 times [2022-01-19 12:41:58,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:41:58,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65114185] [2022-01-19 12:41:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:58,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:41:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:59,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:41:59,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65114185] [2022-01-19 12:41:59,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65114185] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:41:59,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33618572] [2022-01-19 12:41:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:41:59,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:41:59,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:41:59,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:41:59,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 12:41:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:41:59,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-19 12:41:59,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:41:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:41:59,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 12:42:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:42:00,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33618572] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 12:42:00,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 12:42:00,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-01-19 12:42:00,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176249363] [2022-01-19 12:42:00,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 12:42:00,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 12:42:00,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:42:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 12:42:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-19 12:42:00,264 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:42:00,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 145 transitions, 550 flow. Second operand has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:00,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:42:00,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:42:00,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:42:04,266 INFO L129 PetriNetUnfolder]: 38104/55867 cut-off events. [2022-01-19 12:42:04,267 INFO L130 PetriNetUnfolder]: For 40938/40979 co-relation queries the response was YES. [2022-01-19 12:42:04,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140707 conditions, 55867 events. 38104/55867 cut-off events. For 40938/40979 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 389838 event pairs, 2933 based on Foata normal form. 1114/56792 useless extension candidates. Maximal degree in co-relation 140692. Up to 30380 conditions per place. [2022-01-19 12:42:04,843 INFO L132 encePairwiseOnDemand]: 134/149 looper letters, 250 selfloop transitions, 32 changer transitions 2/346 dead transitions. [2022-01-19 12:42:04,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 346 transitions, 1826 flow [2022-01-19 12:42:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 12:42:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 12:42:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1357 transitions. [2022-01-19 12:42:04,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6505273250239694 [2022-01-19 12:42:04,847 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1357 transitions. [2022-01-19 12:42:04,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1357 transitions. [2022-01-19 12:42:04,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:42:04,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1357 transitions. [2022-01-19 12:42:04,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 96.92857142857143) internal successors, (1357), 14 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:04,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:04,854 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:04,854 INFO L186 Difference]: Start difference. First operand has 150 places, 145 transitions, 550 flow. Second operand 14 states and 1357 transitions. [2022-01-19 12:42:04,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 346 transitions, 1826 flow [2022-01-19 12:42:04,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 346 transitions, 1785 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-01-19 12:42:04,892 INFO L242 Difference]: Finished difference. Result has 167 places, 157 transitions, 700 flow [2022-01-19 12:42:04,892 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=700, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2022-01-19 12:42:04,893 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 32 predicate places. [2022-01-19 12:42:04,893 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 700 flow [2022-01-19 12:42:04,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:04,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:42:04,894 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:42:04,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 12:42:05,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:42:05,116 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:42:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:42:05,117 INFO L85 PathProgramCache]: Analyzing trace with hash 440214246, now seen corresponding path program 3 times [2022-01-19 12:42:05,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:42:05,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025209865] [2022-01-19 12:42:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:42:05,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:42:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:42:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:42:05,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:42:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025209865] [2022-01-19 12:42:05,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025209865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:42:05,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:42:05,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:42:05,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298061063] [2022-01-19 12:42:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:42:05,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:42:05,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:42:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:42:05,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:42:05,301 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:42:05,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 700 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:05,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:42:05,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:42:05,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:42:09,999 INFO L129 PetriNetUnfolder]: 41124/59664 cut-off events. [2022-01-19 12:42:09,999 INFO L130 PetriNetUnfolder]: For 79828/79903 co-relation queries the response was YES. [2022-01-19 12:42:10,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169767 conditions, 59664 events. 41124/59664 cut-off events. For 79828/79903 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 410802 event pairs, 23951 based on Foata normal form. 909/60284 useless extension candidates. Maximal degree in co-relation 169746. Up to 44500 conditions per place. [2022-01-19 12:42:10,428 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 133 selfloop transitions, 21 changer transitions 2/218 dead transitions. [2022-01-19 12:42:10,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 218 transitions, 1289 flow [2022-01-19 12:42:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:42:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:42:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2022-01-19 12:42:10,430 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2022-01-19 12:42:10,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2022-01-19 12:42:10,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2022-01-19 12:42:10,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:42:10,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2022-01-19 12:42:10,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:10,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:10,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:10,434 INFO L186 Difference]: Start difference. First operand has 167 places, 157 transitions, 700 flow. Second operand 7 states and 670 transitions. [2022-01-19 12:42:10,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 218 transitions, 1289 flow [2022-01-19 12:42:10,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 218 transitions, 1258 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-01-19 12:42:10,917 INFO L242 Difference]: Finished difference. Result has 170 places, 158 transitions, 744 flow [2022-01-19 12:42:10,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=744, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2022-01-19 12:42:10,917 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 35 predicate places. [2022-01-19 12:42:10,918 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 744 flow [2022-01-19 12:42:10,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:10,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:42:10,918 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:42:10,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 12:42:10,918 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:42:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:42:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash -387427532, now seen corresponding path program 1 times [2022-01-19 12:42:10,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:42:10,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221398133] [2022-01-19 12:42:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:42:10,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:42:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:42:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:42:11,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:42:11,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221398133] [2022-01-19 12:42:11,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221398133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 12:42:11,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 12:42:11,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 12:42:11,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086415957] [2022-01-19 12:42:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 12:42:11,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 12:42:11,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 12:42:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 12:42:11,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-19 12:42:11,079 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-01-19 12:42:11,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:11,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 12:42:11,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-01-19 12:42:11,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 12:42:16,228 INFO L129 PetriNetUnfolder]: 44814/64695 cut-off events. [2022-01-19 12:42:16,228 INFO L130 PetriNetUnfolder]: For 108788/108853 co-relation queries the response was YES. [2022-01-19 12:42:16,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194158 conditions, 64695 events. 44814/64695 cut-off events. For 108788/108853 co-relation queries the response was YES. Maximal size of possible extension queue 2003. Compared 446321 event pairs, 24472 based on Foata normal form. 1271/65805 useless extension candidates. Maximal degree in co-relation 194135. Up to 49580 conditions per place. [2022-01-19 12:42:16,738 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 144 selfloop transitions, 19 changer transitions 2/227 dead transitions. [2022-01-19 12:42:16,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 227 transitions, 1459 flow [2022-01-19 12:42:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 12:42:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 12:42:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2022-01-19 12:42:16,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423777564717162 [2022-01-19 12:42:16,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2022-01-19 12:42:16,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2022-01-19 12:42:16,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 12:42:16,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2022-01-19 12:42:16,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:16,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:16,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:16,744 INFO L186 Difference]: Start difference. First operand has 170 places, 158 transitions, 744 flow. Second operand 7 states and 670 transitions. [2022-01-19 12:42:16,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 227 transitions, 1459 flow [2022-01-19 12:42:17,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 227 transitions, 1434 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 12:42:17,190 INFO L242 Difference]: Finished difference. Result has 174 places, 159 transitions, 786 flow [2022-01-19 12:42:17,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=786, PETRI_PLACES=174, PETRI_TRANSITIONS=159} [2022-01-19 12:42:17,191 INFO L334 CegarLoopForPetriNet]: 135 programPoint places, 39 predicate places. [2022-01-19 12:42:17,191 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 159 transitions, 786 flow [2022-01-19 12:42:17,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 12:42:17,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 12:42:17,191 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 12:42:17,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 12:42:17,192 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-19 12:42:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 12:42:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1745629947, now seen corresponding path program 1 times [2022-01-19 12:42:17,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 12:42:17,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215186449] [2022-01-19 12:42:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:42:17,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 12:42:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:43:46,349 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (div c_~x3~0 4294967296)) (.cse0 (* (- 4) c_~x4~0))) (and (<= (+ (* 4 c_~x4~0) (* 4294967296 (div c_~n~0 4294967296)) (* 4294967296 (div (+ .cse0 c_~x3~0 4294967295) 4294967296))) (+ (* 4294967296 .cse1) 4261412736 c_~n~0)) (let ((.cse2 (div (+ .cse0 c_~x3~0) 4294967296)) (.cse3 (div (+ (- 32) c_~x4~0) 1073741824))) (<= (* (div (+ (* (- 138512695296) .cse2) (* (- 138512695296) .cse3) 144955146271 (* (- 127) c_~x4~0) (* 36893488284858056704 .cse1)) 136365211648) 4) (+ (* .cse2 1082196484) (* 8454656 .cse3) c_~x4~0))) (= (+ (* (- 1) c_~x1~0) (* 4294967296 (div c_~x1~0 4294967296)) (* (div c_~x2~0 4294967296) (- 4294967296)) c_~x2~0) 0))) is different from false [2022-01-19 12:43:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 12:43:53,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 12:43:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215186449] [2022-01-19 12:43:53,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215186449] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 12:43:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650400809] [2022-01-19 12:43:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 12:43:53,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 12:43:53,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 12:43:53,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 12:43:53,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 12:44:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 12:44:06,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-19 12:44:06,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 12:46:20,406 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:20,596 INFO L884 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:22,269 INFO L884 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:24,619 INFO L884 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:26,184 INFO L884 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:27,495 INFO L884 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:28,844 INFO L884 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:30,055 INFO L884 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:31,400 INFO L884 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:33,033 INFO L884 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:35,033 INFO L884 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:37,421 INFO L884 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:40,161 INFO L884 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:43,353 INFO L884 QuantifierPusher]: Run 140 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:46,995 INFO L884 QuantifierPusher]: Run 150 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:51,083 INFO L884 QuantifierPusher]: Run 160 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:46:55,710 INFO L884 QuantifierPusher]: Run 170 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:00,888 INFO L884 QuantifierPusher]: Run 180 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:06,665 INFO L884 QuantifierPusher]: Run 190 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:13,013 INFO L884 QuantifierPusher]: Run 200 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:20,052 INFO L884 QuantifierPusher]: Run 210 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:27,766 INFO L884 QuantifierPusher]: Run 220 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:36,231 INFO L884 QuantifierPusher]: Run 230 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:45,416 INFO L884 QuantifierPusher]: Run 240 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:47:55,386 INFO L884 QuantifierPusher]: Run 250 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:06,150 INFO L884 QuantifierPusher]: Run 260 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:17,755 INFO L884 QuantifierPusher]: Run 270 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:30,317 INFO L884 QuantifierPusher]: Run 280 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:43,685 INFO L884 QuantifierPusher]: Run 290 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:48:58,088 INFO L884 QuantifierPusher]: Run 300 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:49:13,440 INFO L884 QuantifierPusher]: Run 310 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:49:29,723 INFO L884 QuantifierPusher]: Run 320 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:49:47,087 INFO L884 QuantifierPusher]: Run 330 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:50:05,522 INFO L884 QuantifierPusher]: Run 340 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:50:24,934 INFO L884 QuantifierPusher]: Run 350 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:50:45,594 INFO L884 QuantifierPusher]: Run 360 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:51:07,409 INFO L884 QuantifierPusher]: Run 370 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:51:30,604 INFO L884 QuantifierPusher]: Run 380 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:51:54,925 INFO L884 QuantifierPusher]: Run 390 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:52:20,597 INFO L884 QuantifierPusher]: Run 400 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:52:47,457 INFO L884 QuantifierPusher]: Run 410 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:53:15,707 INFO L884 QuantifierPusher]: Run 420 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:53:45,240 INFO L884 QuantifierPusher]: Run 430 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:54:16,182 INFO L884 QuantifierPusher]: Run 440 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:54:48,524 INFO L884 QuantifierPusher]: Run 450 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 12:55:22,554 INFO L884 QuantifierPusher]: Run 460 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-01-19 12:55:52,310 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 12:55:52,330 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 12:55:53,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 12:55:53,337 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 [2022-01-19 12:55:54,014 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 12:55:54,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 12:55:54,014 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 109 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2022-01-19 12:55:54,015 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-19 12:55:54,016 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-19 12:55:54,016 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-19 12:55:54,016 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-19 12:55:54,018 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2022-01-19 12:55:54,020 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 12:55:54,020 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 12:55:54,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:55:54 BasicIcfg [2022-01-19 12:55:54,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 12:55:54,025 INFO L158 Benchmark]: Toolchain (without parser) took 855105.21ms. Allocated memory was 388.0MB in the beginning and 14.2GB in the end (delta: 13.8GB). Free memory was 334.6MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 12.0GB. Max. memory is 16.0GB. [2022-01-19 12:55:54,025 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory was 350.8MB in the beginning and 350.7MB in the end (delta: 65.6kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 12:55:54,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.46ms. Allocated memory was 388.0MB in the beginning and 482.3MB in the end (delta: 94.4MB). Free memory was 334.4MB in the beginning and 455.2MB in the end (delta: -120.8MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. [2022-01-19 12:55:54,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.21ms. Allocated memory is still 482.3MB. Free memory was 455.2MB in the beginning and 453.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 12:55:54,026 INFO L158 Benchmark]: Boogie Preprocessor took 22.48ms. Allocated memory is still 482.3MB. Free memory was 453.1MB in the beginning and 452.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 12:55:54,026 INFO L158 Benchmark]: RCFGBuilder took 369.96ms. Allocated memory is still 482.3MB. Free memory was 452.1MB in the beginning and 436.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 12:55:54,026 INFO L158 Benchmark]: TraceAbstraction took 854422.84ms. Allocated memory was 482.3MB in the beginning and 14.2GB in the end (delta: 13.8GB). Free memory was 435.3MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 12.0GB. Max. memory is 16.0GB. [2022-01-19 12:55:54,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory was 350.8MB in the beginning and 350.7MB in the end (delta: 65.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 257.46ms. Allocated memory was 388.0MB in the beginning and 482.3MB in the end (delta: 94.4MB). Free memory was 334.4MB in the beginning and 455.2MB in the end (delta: -120.8MB). Peak memory consumption was 10.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.21ms. Allocated memory is still 482.3MB. Free memory was 455.2MB in the beginning and 453.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.48ms. Allocated memory is still 482.3MB. Free memory was 453.1MB in the beginning and 452.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 369.96ms. Allocated memory is still 482.3MB. Free memory was 452.1MB in the beginning and 436.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 854422.84ms. Allocated memory was 482.3MB in the beginning and 14.2GB in the end (delta: 13.8GB). Free memory was 435.3MB in the beginning and 3.0GB in the end (delta: -2.6GB). Peak memory consumption was 12.0GB. 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 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 109 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 109 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 109 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 109 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 109 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 188 locations, 5 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: 854.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 33.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 909 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 909 mSDsluCounter, 758 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 681 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2173 IncrementalHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 408 mSDtfsCounter, 2173 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=786occurred in iteration=10, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1084 NumberOfCodeBlocks, 1084 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1172 ConstructedInterpolants, 0 QuantifiedInterpolants, 17579 SizeOfPredicates, 10 NumberOfNonLiveVariables, 263 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 7/10 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown