/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:46:37,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:46:37,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:46:37,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:46:37,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:46:37,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:46:37,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:46:37,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:46:37,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:46:37,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:46:37,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:46:37,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:46:37,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:46:37,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:46:37,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:46:37,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:46:37,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:46:37,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:46:37,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:46:37,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:46:37,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:46:37,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:46:37,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:46:37,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:46:37,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:46:37,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:46:37,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:46:37,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:46:37,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:46:37,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:46:37,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:46:37,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:46:37,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:46:37,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:46:37,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:46:37,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:46:37,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:46:37,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:46:37,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:46:37,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:46:37,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:46:37,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:46:37,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:46:37,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:46:37,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:46:37,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:46:37,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:46:37,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:46:37,949 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:46:37,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:46:37,949 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:46:37,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:46:37,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:46:37,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:46:37,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:46:37,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:46:37,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:46:37,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:46:37,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:46:37,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:46:37,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:46:37,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:46:37,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:46:37,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:46:37,954 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:46:37,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:46:37,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:46:38,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:46:38,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:46:38,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:46:38,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:46:38,153 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:46:38,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2022-09-20 20:46:38,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d941f4fc/ad8377a19c5e4e919a50d851efabd4b1/FLAG63c0279c7 [2022-09-20 20:46:38,542 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:46:38,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2022-09-20 20:46:38,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d941f4fc/ad8377a19c5e4e919a50d851efabd4b1/FLAG63c0279c7 [2022-09-20 20:46:38,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d941f4fc/ad8377a19c5e4e919a50d851efabd4b1 [2022-09-20 20:46:38,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:46:38,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:46:38,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:46:38,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:46:38,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:46:38,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:46:38" (1/1) ... [2022-09-20 20:46:38,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db47093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:38, skipping insertion in model container [2022-09-20 20:46:38,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:46:38" (1/1) ... [2022-09-20 20:46:38,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:46:38,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:46:39,128 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-exp2x4.wvr.c[2309,2322] [2022-09-20 20:46:39,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:46:39,141 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:46:39,173 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-exp2x4.wvr.c[2309,2322] [2022-09-20 20:46:39,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:46:39,185 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:46:39,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39 WrapperNode [2022-09-20 20:46:39,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:46:39,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:46:39,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:46:39,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:46:39,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,229 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-09-20 20:46:39,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:46:39,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:46:39,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:46:39,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:46:39,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:46:39,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:46:39,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:46:39,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:46:39,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (1/1) ... [2022-09-20 20:46:39,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:46:39,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:39,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 20:46:39,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 20:46:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:46:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:46:39,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:46:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:46:39,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:46:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 20:46:39,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 20:46:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 20:46:39,328 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 20:46:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:46:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:46:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:46:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:46:39,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:46:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:46:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:46:39,333 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:46:39,395 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:46:39,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:46:39,636 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:46:39,643 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:46:39,643 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-20 20:46:39,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:46:39 BoogieIcfgContainer [2022-09-20 20:46:39,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:46:39,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:46:39,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:46:39,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:46:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:46:38" (1/3) ... [2022-09-20 20:46:39,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665691b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:46:39, skipping insertion in model container [2022-09-20 20:46:39,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:39" (2/3) ... [2022-09-20 20:46:39,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665691b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:46:39, skipping insertion in model container [2022-09-20 20:46:39,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:46:39" (3/3) ... [2022-09-20 20:46:39,652 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2022-09-20 20:46:39,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:46:39,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:46:39,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:46:39,739 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 20:46:39,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 129 transitions, 290 flow [2022-09-20 20:46:39,867 INFO L130 PetriNetUnfolder]: 10/125 cut-off events. [2022-09-20 20:46:39,867 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 20:46:39,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 10/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-09-20 20:46:39,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 129 transitions, 290 flow [2022-09-20 20:46:39,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 248 flow [2022-09-20 20:46:39,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:46:39,901 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ea3afb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:46:39,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 20:46:39,943 INFO L130 PetriNetUnfolder]: 10/111 cut-off events. [2022-09-20 20:46:39,943 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 20:46:39,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:39,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:39,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1373743345, now seen corresponding path program 1 times [2022-09-20 20:46:39,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:39,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329198535] [2022-09-20 20:46:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:40,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:40,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329198535] [2022-09-20 20:46:40,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329198535] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:40,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:40,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:46:40,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366162776] [2022-09-20 20:46:40,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:40,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 20:46:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 20:46:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 20:46:40,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 129 [2022-09-20 20:46:40,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:40,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:40,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 129 [2022-09-20 20:46:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:40,312 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2022-09-20 20:46:40,312 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-09-20 20:46:40,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 106 events. 4/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 18/118 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2022-09-20 20:46:40,314 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 8 selfloop transitions, 0 changer transitions 2/106 dead transitions. [2022-09-20 20:46:40,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 252 flow [2022-09-20 20:46:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 20:46:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 20:46:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2022-09-20 20:46:40,328 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.937984496124031 [2022-09-20 20:46:40,328 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2022-09-20 20:46:40,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2022-09-20 20:46:40,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:40,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2022-09-20 20:46:40,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:40,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:40,349 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:40,350 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 248 flow. Second operand 2 states and 242 transitions. [2022-09-20 20:46:40,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 252 flow [2022-09-20 20:46:40,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 236 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 20:46:40,361 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 216 flow [2022-09-20 20:46:40,363 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2022-09-20 20:46:40,368 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, -7 predicate places. [2022-09-20 20:46:40,368 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 216 flow [2022-09-20 20:46:40,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:40,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:40,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:40,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:46:40,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1467367728, now seen corresponding path program 1 times [2022-09-20 20:46:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:40,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677246274] [2022-09-20 20:46:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:40,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677246274] [2022-09-20 20:46:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677246274] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:40,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:40,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:46:40,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996829156] [2022-09-20 20:46:40,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:46:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:46:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:46:40,909 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 129 [2022-09-20 20:46:40,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 216 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) [2022-09-20 20:46:40,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:40,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 129 [2022-09-20 20:46:40,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:41,438 INFO L130 PetriNetUnfolder]: 1672/2870 cut-off events. [2022-09-20 20:46:41,443 INFO L131 PetriNetUnfolder]: For 125/177 co-relation queries the response was YES. [2022-09-20 20:46:41,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 2870 events. 1672/2870 cut-off events. For 125/177 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15765 event pairs, 763 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 5270. Up to 1838 conditions per place. [2022-09-20 20:46:41,466 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 51 selfloop transitions, 7 changer transitions 4/126 dead transitions. [2022-09-20 20:46:41,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 126 transitions, 391 flow [2022-09-20 20:46:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:46:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:46:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 623 transitions. [2022-09-20 20:46:41,472 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.689922480620155 [2022-09-20 20:46:41,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 623 transitions. [2022-09-20 20:46:41,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 623 transitions. [2022-09-20 20:46:41,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:41,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 623 transitions. [2022-09-20 20:46:41,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:41,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:41,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:41,480 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 216 flow. Second operand 7 states and 623 transitions. [2022-09-20 20:46:41,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 126 transitions, 391 flow [2022-09-20 20:46:41,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:46:41,485 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 257 flow [2022-09-20 20:46:41,486 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2022-09-20 20:46:41,486 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 0 predicate places. [2022-09-20 20:46:41,487 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 257 flow [2022-09-20 20:46:41,487 INFO L496 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) [2022-09-20 20:46:41,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:41,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:41,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:46:41,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash -425322130, now seen corresponding path program 1 times [2022-09-20 20:46:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:41,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358328214] [2022-09-20 20:46:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:41,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358328214] [2022-09-20 20:46:41,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358328214] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:46:41,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220048202] [2022-09-20 20:46:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:41,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:41,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:41,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:46:41,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 20:46:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:41,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 20:46:41,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:46:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:42,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:46:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:42,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220048202] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:46:42,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:46:42,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-09-20 20:46:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840314835] [2022-09-20 20:46:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:46:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:46:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:42,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:46:42,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:46:42,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2022-09-20 20:46:42,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 257 flow. Second operand has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:42,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:42,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2022-09-20 20:46:42,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:43,031 INFO L130 PetriNetUnfolder]: 2201/4085 cut-off events. [2022-09-20 20:46:43,032 INFO L131 PetriNetUnfolder]: For 632/677 co-relation queries the response was YES. [2022-09-20 20:46:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8229 conditions, 4085 events. 2201/4085 cut-off events. For 632/677 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27200 event pairs, 369 based on Foata normal form. 9/2980 useless extension candidates. Maximal degree in co-relation 8222. Up to 1191 conditions per place. [2022-09-20 20:46:43,074 INFO L137 encePairwiseOnDemand]: 116/129 looper letters, 95 selfloop transitions, 20 changer transitions 0/187 dead transitions. [2022-09-20 20:46:43,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 187 transitions, 697 flow [2022-09-20 20:46:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:46:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:46:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1149 transitions. [2022-09-20 20:46:43,078 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7422480620155039 [2022-09-20 20:46:43,078 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1149 transitions. [2022-09-20 20:46:43,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1149 transitions. [2022-09-20 20:46:43,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:43,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1149 transitions. [2022-09-20 20:46:43,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.75) internal successors, (1149), 12 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 129.0) internal successors, (1677), 13 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,086 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 129.0) internal successors, (1677), 13 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,086 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 257 flow. Second operand 12 states and 1149 transitions. [2022-09-20 20:46:43,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 187 transitions, 697 flow [2022-09-20 20:46:43,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 187 transitions, 676 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-09-20 20:46:43,092 INFO L231 Difference]: Finished difference. Result has 126 places, 120 transitions, 374 flow [2022-09-20 20:46:43,092 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=374, PETRI_PLACES=126, PETRI_TRANSITIONS=120} [2022-09-20 20:46:43,093 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 11 predicate places. [2022-09-20 20:46:43,093 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 120 transitions, 374 flow [2022-09-20 20:46:43,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:43,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:43,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 20:46:43,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:43,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1553348001, now seen corresponding path program 1 times [2022-09-20 20:46:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718586781] [2022-09-20 20:46:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:43,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:43,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718586781] [2022-09-20 20:46:43,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718586781] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:43,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:43,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:46:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318537707] [2022-09-20 20:46:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:43,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:46:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:46:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:46:43,403 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2022-09-20 20:46:43,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 120 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:43,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2022-09-20 20:46:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:43,915 INFO L130 PetriNetUnfolder]: 2246/4225 cut-off events. [2022-09-20 20:46:43,915 INFO L131 PetriNetUnfolder]: For 4908/4934 co-relation queries the response was YES. [2022-09-20 20:46:43,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10412 conditions, 4225 events. 2246/4225 cut-off events. For 4908/4934 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 28363 event pairs, 868 based on Foata normal form. 36/3476 useless extension candidates. Maximal degree in co-relation 10401. Up to 1555 conditions per place. [2022-09-20 20:46:43,961 INFO L137 encePairwiseOnDemand]: 116/129 looper letters, 72 selfloop transitions, 18 changer transitions 0/162 dead transitions. [2022-09-20 20:46:43,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 162 transitions, 719 flow [2022-09-20 20:46:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:46:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:46:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2022-09-20 20:46:43,963 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7530454042081949 [2022-09-20 20:46:43,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2022-09-20 20:46:43,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2022-09-20 20:46:43,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:43,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2022-09-20 20:46:43,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,968 INFO L175 Difference]: Start difference. First operand has 126 places, 120 transitions, 374 flow. Second operand 7 states and 680 transitions. [2022-09-20 20:46:43,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 162 transitions, 719 flow [2022-09-20 20:46:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 162 transitions, 713 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 20:46:43,979 INFO L231 Difference]: Finished difference. Result has 132 places, 127 transitions, 486 flow [2022-09-20 20:46:43,979 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2022-09-20 20:46:43,980 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 17 predicate places. [2022-09-20 20:46:43,980 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 486 flow [2022-09-20 20:46:43,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:43,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:46:43,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash -508443786, now seen corresponding path program 1 times [2022-09-20 20:46:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:43,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749499693] [2022-09-20 20:46:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:44,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:44,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749499693] [2022-09-20 20:46:44,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749499693] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:46:44,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191020633] [2022-09-20 20:46:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:44,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:44,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:46:44,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 20:46:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:44,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 20:46:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:46:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:44,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:46:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:44,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191020633] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:46:44,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:46:44,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-09-20 20:46:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30896219] [2022-09-20 20:46:44,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:46:44,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:46:44,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:46:44,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:46:44,626 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2022-09-20 20:46:44,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:44,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:44,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2022-09-20 20:46:44,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:45,673 INFO L130 PetriNetUnfolder]: 4109/7255 cut-off events. [2022-09-20 20:46:45,673 INFO L131 PetriNetUnfolder]: For 14115/14404 co-relation queries the response was YES. [2022-09-20 20:46:45,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20480 conditions, 7255 events. 4109/7255 cut-off events. For 14115/14404 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 55021 event pairs, 297 based on Foata normal form. 99/6420 useless extension candidates. Maximal degree in co-relation 20465. Up to 2087 conditions per place. [2022-09-20 20:46:45,739 INFO L137 encePairwiseOnDemand]: 116/129 looper letters, 158 selfloop transitions, 20 changer transitions 0/258 dead transitions. [2022-09-20 20:46:45,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 258 transitions, 1640 flow [2022-09-20 20:46:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:46:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:46:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1145 transitions. [2022-09-20 20:46:45,742 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7396640826873385 [2022-09-20 20:46:45,742 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1145 transitions. [2022-09-20 20:46:45,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1145 transitions. [2022-09-20 20:46:45,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:45,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1145 transitions. [2022-09-20 20:46:45,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.41666666666667) internal successors, (1145), 12 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:45,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 129.0) internal successors, (1677), 13 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:45,749 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 129.0) internal successors, (1677), 13 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:45,749 INFO L175 Difference]: Start difference. First operand has 132 places, 127 transitions, 486 flow. Second operand 12 states and 1145 transitions. [2022-09-20 20:46:45,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 258 transitions, 1640 flow [2022-09-20 20:46:45,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 258 transitions, 1566 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-09-20 20:46:45,768 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 606 flow [2022-09-20 20:46:45,768 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=606, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2022-09-20 20:46:45,769 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 33 predicate places. [2022-09-20 20:46:45,769 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 606 flow [2022-09-20 20:46:45,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:45,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:45,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:45,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 20:46:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:45,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:45,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1511254776, now seen corresponding path program 2 times [2022-09-20 20:46:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:45,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494262317] [2022-09-20 20:46:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:45,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:46,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:46,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494262317] [2022-09-20 20:46:46,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494262317] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:46,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:46,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:46:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442719207] [2022-09-20 20:46:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:46:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:46:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:46:46,232 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-09-20 20:46:46,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:46,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:46,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-09-20 20:46:46,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:47,497 INFO L130 PetriNetUnfolder]: 5648/9358 cut-off events. [2022-09-20 20:46:47,497 INFO L131 PetriNetUnfolder]: For 23024/23024 co-relation queries the response was YES. [2022-09-20 20:46:47,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32938 conditions, 9358 events. 5648/9358 cut-off events. For 23024/23024 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 64911 event pairs, 1565 based on Foata normal form. 13/9116 useless extension candidates. Maximal degree in co-relation 32916. Up to 7597 conditions per place. [2022-09-20 20:46:47,586 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 96 selfloop transitions, 11 changer transitions 1/170 dead transitions. [2022-09-20 20:46:47,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 170 transitions, 992 flow [2022-09-20 20:46:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:46:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:46:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2022-09-20 20:46:47,588 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6989664082687338 [2022-09-20 20:46:47,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2022-09-20 20:46:47,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2022-09-20 20:46:47,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:47,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2022-09-20 20:46:47,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:47,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:47,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:47,591 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 606 flow. Second operand 6 states and 541 transitions. [2022-09-20 20:46:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 170 transitions, 992 flow [2022-09-20 20:46:47,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 170 transitions, 984 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-20 20:46:47,643 INFO L231 Difference]: Finished difference. Result has 152 places, 142 transitions, 657 flow [2022-09-20 20:46:47,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=657, PETRI_PLACES=152, PETRI_TRANSITIONS=142} [2022-09-20 20:46:47,644 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 37 predicate places. [2022-09-20 20:46:47,644 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 657 flow [2022-09-20 20:46:47,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:47,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:47,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:46:47,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash -322781821, now seen corresponding path program 1 times [2022-09-20 20:46:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521063550] [2022-09-20 20:46:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:47,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:47,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521063550] [2022-09-20 20:46:47,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521063550] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:47,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:47,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:46:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121819653] [2022-09-20 20:46:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:46:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:46:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:46:47,750 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2022-09-20 20:46:47,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 657 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:47,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:47,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2022-09-20 20:46:47,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:48,594 INFO L130 PetriNetUnfolder]: 3968/7208 cut-off events. [2022-09-20 20:46:48,594 INFO L131 PetriNetUnfolder]: For 17858/18197 co-relation queries the response was YES. [2022-09-20 20:46:48,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24855 conditions, 7208 events. 3968/7208 cut-off events. For 17858/18197 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 56096 event pairs, 384 based on Foata normal form. 187/7116 useless extension candidates. Maximal degree in co-relation 24830. Up to 3508 conditions per place. [2022-09-20 20:46:48,669 INFO L137 encePairwiseOnDemand]: 116/129 looper letters, 110 selfloop transitions, 21 changer transitions 0/210 dead transitions. [2022-09-20 20:46:48,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 210 transitions, 1378 flow [2022-09-20 20:46:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:46:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:46:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 678 transitions. [2022-09-20 20:46:48,672 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7508305647840532 [2022-09-20 20:46:48,672 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 678 transitions. [2022-09-20 20:46:48,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 678 transitions. [2022-09-20 20:46:48,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:48,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 678 transitions. [2022-09-20 20:46:48,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,678 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,678 INFO L175 Difference]: Start difference. First operand has 152 places, 142 transitions, 657 flow. Second operand 7 states and 678 transitions. [2022-09-20 20:46:48,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 210 transitions, 1378 flow [2022-09-20 20:46:48,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 210 transitions, 1356 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:46:48,728 INFO L231 Difference]: Finished difference. Result has 157 places, 150 transitions, 777 flow [2022-09-20 20:46:48,729 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=777, PETRI_PLACES=157, PETRI_TRANSITIONS=150} [2022-09-20 20:46:48,729 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 42 predicate places. [2022-09-20 20:46:48,729 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 150 transitions, 777 flow [2022-09-20 20:46:48,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:48,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:46:48,730 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -340299247, now seen corresponding path program 2 times [2022-09-20 20:46:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:48,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633216395] [2022-09-20 20:46:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:48,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:49,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:49,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633216395] [2022-09-20 20:46:49,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633216395] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:49,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:49,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:46:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279611891] [2022-09-20 20:46:49,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:49,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:46:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:49,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:46:49,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:46:49,019 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 129 [2022-09-20 20:46:49,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 150 transitions, 777 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:49,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:49,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 129 [2022-09-20 20:46:49,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:50,245 INFO L130 PetriNetUnfolder]: 6267/10288 cut-off events. [2022-09-20 20:46:50,246 INFO L131 PetriNetUnfolder]: For 33642/33709 co-relation queries the response was YES. [2022-09-20 20:46:50,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39316 conditions, 10288 events. 6267/10288 cut-off events. For 33642/33709 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 71064 event pairs, 1483 based on Foata normal form. 204/10296 useless extension candidates. Maximal degree in co-relation 39288. Up to 5560 conditions per place. [2022-09-20 20:46:50,340 INFO L137 encePairwiseOnDemand]: 119/129 looper letters, 134 selfloop transitions, 22 changer transitions 2/220 dead transitions. [2022-09-20 20:46:50,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 220 transitions, 1597 flow [2022-09-20 20:46:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:46:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:46:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 635 transitions. [2022-09-20 20:46:50,342 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7032115171650055 [2022-09-20 20:46:50,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 635 transitions. [2022-09-20 20:46:50,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 635 transitions. [2022-09-20 20:46:50,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:50,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 635 transitions. [2022-09-20 20:46:50,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:50,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:50,346 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:50,346 INFO L175 Difference]: Start difference. First operand has 157 places, 150 transitions, 777 flow. Second operand 7 states and 635 transitions. [2022-09-20 20:46:50,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 220 transitions, 1597 flow [2022-09-20 20:46:50,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 220 transitions, 1573 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-09-20 20:46:50,443 INFO L231 Difference]: Finished difference. Result has 164 places, 156 transitions, 899 flow [2022-09-20 20:46:50,443 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=899, PETRI_PLACES=164, PETRI_TRANSITIONS=156} [2022-09-20 20:46:50,444 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 49 predicate places. [2022-09-20 20:46:50,444 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 156 transitions, 899 flow [2022-09-20 20:46:50,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:50,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:50,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:50,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:46:50,445 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1991305640, now seen corresponding path program 2 times [2022-09-20 20:46:50,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:50,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870538541] [2022-09-20 20:46:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:50,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:50,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870538541] [2022-09-20 20:46:50,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870538541] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:50,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:50,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:46:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35764195] [2022-09-20 20:46:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:50,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:46:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:46:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:46:50,545 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2022-09-20 20:46:50,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 156 transitions, 899 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:50,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:50,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2022-09-20 20:46:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:51,479 INFO L130 PetriNetUnfolder]: 4143/7856 cut-off events. [2022-09-20 20:46:51,479 INFO L131 PetriNetUnfolder]: For 29279/29483 co-relation queries the response was YES. [2022-09-20 20:46:51,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29963 conditions, 7856 events. 4143/7856 cut-off events. For 29279/29483 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 62838 event pairs, 780 based on Foata normal form. 122/7706 useless extension candidates. Maximal degree in co-relation 29932. Up to 3685 conditions per place. [2022-09-20 20:46:51,560 INFO L137 encePairwiseOnDemand]: 117/129 looper letters, 111 selfloop transitions, 21 changer transitions 2/215 dead transitions. [2022-09-20 20:46:51,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 215 transitions, 1545 flow [2022-09-20 20:46:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:46:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:46:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2022-09-20 20:46:51,563 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7497231450719822 [2022-09-20 20:46:51,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2022-09-20 20:46:51,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2022-09-20 20:46:51,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:51,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2022-09-20 20:46:51,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:51,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:51,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:51,635 INFO L175 Difference]: Start difference. First operand has 164 places, 156 transitions, 899 flow. Second operand 7 states and 677 transitions. [2022-09-20 20:46:51,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 215 transitions, 1545 flow [2022-09-20 20:46:51,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 215 transitions, 1541 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:46:51,718 INFO L231 Difference]: Finished difference. Result has 171 places, 158 transitions, 970 flow [2022-09-20 20:46:51,719 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=171, PETRI_TRANSITIONS=158} [2022-09-20 20:46:51,719 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 56 predicate places. [2022-09-20 20:46:51,719 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 158 transitions, 970 flow [2022-09-20 20:46:51,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:51,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:51,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:51,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:46:51,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -176656881, now seen corresponding path program 2 times [2022-09-20 20:46:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:51,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919343779] [2022-09-20 20:46:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:51,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919343779] [2022-09-20 20:46:51,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919343779] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:46:51,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703872608] [2022-09-20 20:46:51,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 20:46:51,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:51,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:46:51,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 20:46:51,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 20:46:51,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 20:46:51,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-20 20:46:51,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:46:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:52,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:46:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:52,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703872608] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:46:52,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:46:52,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-09-20 20:46:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606424350] [2022-09-20 20:46:52,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:46:52,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:46:52,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:46:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:46:52,275 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2022-09-20 20:46:52,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 158 transitions, 970 flow. Second operand has 10 states, 10 states have (on average 90.1) internal successors, (901), 10 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:52,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:52,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2022-09-20 20:46:52,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:53,603 INFO L130 PetriNetUnfolder]: 5021/9114 cut-off events. [2022-09-20 20:46:53,603 INFO L131 PetriNetUnfolder]: For 46225/46626 co-relation queries the response was YES. [2022-09-20 20:46:53,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38626 conditions, 9114 events. 5021/9114 cut-off events. For 46225/46626 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 69365 event pairs, 1459 based on Foata normal form. 213/8942 useless extension candidates. Maximal degree in co-relation 38592. Up to 3642 conditions per place. [2022-09-20 20:46:53,712 INFO L137 encePairwiseOnDemand]: 116/129 looper letters, 196 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2022-09-20 20:46:53,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 304 transitions, 2733 flow [2022-09-20 20:46:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:46:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:46:53,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1136 transitions. [2022-09-20 20:46:53,717 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7338501291989664 [2022-09-20 20:46:53,717 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1136 transitions. [2022-09-20 20:46:53,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1136 transitions. [2022-09-20 20:46:53,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:53,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1136 transitions. [2022-09-20 20:46:53,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.66666666666667) internal successors, (1136), 12 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:53,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 129.0) internal successors, (1677), 13 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:53,723 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 129.0) internal successors, (1677), 13 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:53,723 INFO L175 Difference]: Start difference. First operand has 171 places, 158 transitions, 970 flow. Second operand 12 states and 1136 transitions. [2022-09-20 20:46:53,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 304 transitions, 2733 flow [2022-09-20 20:46:53,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 304 transitions, 2729 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:46:53,919 INFO L231 Difference]: Finished difference. Result has 183 places, 166 transitions, 1123 flow [2022-09-20 20:46:53,919 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1123, PETRI_PLACES=183, PETRI_TRANSITIONS=166} [2022-09-20 20:46:53,920 INFO L287 CegarLoopForPetriNet]: 115 programPoint places, 68 predicate places. [2022-09-20 20:46:53,920 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 166 transitions, 1123 flow [2022-09-20 20:46:53,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.1) internal successors, (901), 10 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:53,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:53,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:53,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 20:46:54,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:54,136 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 20:46:54,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash 217065709, now seen corresponding path program 1 times [2022-09-20 20:46:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:54,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466760229] [2022-09-20 20:46:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:55,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:55,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466760229] [2022-09-20 20:46:55,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466760229] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:46:55,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464890405] [2022-09-20 20:46:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:55,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:46:55,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:55,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:46:55,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 20:47:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:44,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-20 20:47:44,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:49:19,878 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:20,067 INFO L208 tifierPushTermWalker]: Run 20 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:20,270 INFO L208 tifierPushTermWalker]: Run 30 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:20,692 INFO L208 tifierPushTermWalker]: Run 40 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:21,353 INFO L208 tifierPushTermWalker]: Run 50 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:22,269 INFO L208 tifierPushTermWalker]: Run 60 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:23,333 INFO L208 tifierPushTermWalker]: Run 70 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:24,418 INFO L208 tifierPushTermWalker]: Run 80 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:25,809 INFO L208 tifierPushTermWalker]: Run 90 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:27,389 INFO L208 tifierPushTermWalker]: Run 100 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:29,423 INFO L208 tifierPushTermWalker]: Run 110 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:31,831 INFO L208 tifierPushTermWalker]: Run 120 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:34,589 INFO L208 tifierPushTermWalker]: Run 130 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:37,854 INFO L208 tifierPushTermWalker]: Run 140 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:41,677 INFO L208 tifierPushTermWalker]: Run 150 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:46,009 INFO L208 tifierPushTermWalker]: Run 160 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:50,887 INFO L208 tifierPushTermWalker]: Run 170 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:49:56,609 INFO L208 tifierPushTermWalker]: Run 180 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:02,804 INFO L208 tifierPushTermWalker]: Run 190 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:09,668 INFO L208 tifierPushTermWalker]: Run 200 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:17,400 INFO L208 tifierPushTermWalker]: Run 210 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:25,647 INFO L208 tifierPushTermWalker]: Run 220 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:34,906 INFO L208 tifierPushTermWalker]: Run 230 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:44,963 INFO L208 tifierPushTermWalker]: Run 240 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:50:56,090 INFO L208 tifierPushTermWalker]: Run 250 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:51:07,778 INFO L208 tifierPushTermWalker]: Run 260 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:51:20,270 INFO L208 tifierPushTermWalker]: Run 270 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:51:33,778 INFO L208 tifierPushTermWalker]: Run 280 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:51:48,308 INFO L208 tifierPushTermWalker]: Run 290 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:52:03,872 INFO L208 tifierPushTermWalker]: Run 300 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:52:20,510 INFO L208 tifierPushTermWalker]: Run 310 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:52:38,304 INFO L208 tifierPushTermWalker]: Run 320 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:52:57,300 INFO L208 tifierPushTermWalker]: Run 330 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:53:17,502 INFO L208 tifierPushTermWalker]: Run 340 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:53:38,842 INFO L208 tifierPushTermWalker]: Run 350 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:54:01,645 INFO L208 tifierPushTermWalker]: Run 360 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:54:25,805 INFO L208 tifierPushTermWalker]: Run 370 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:54:51,159 INFO L208 tifierPushTermWalker]: Run 380 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:55:18,154 INFO L208 tifierPushTermWalker]: Run 390 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:55:46,240 INFO L208 tifierPushTermWalker]: Run 400 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:56:16,127 INFO L208 tifierPushTermWalker]: Run 410 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:56:47,383 INFO L208 tifierPushTermWalker]: Run 420 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:57:20,218 INFO L208 tifierPushTermWalker]: Run 430 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:57:54,788 INFO L208 tifierPushTermWalker]: Run 440 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:58:31,304 INFO L208 tifierPushTermWalker]: Run 450 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:59:10,559 INFO L208 tifierPushTermWalker]: Run 460 iterations without descend maybe there is a nontermination bug. [2022-09-20 20:59:51,236 INFO L208 tifierPushTermWalker]: Run 470 iterations without descend maybe there is a nontermination bug. [2022-09-20 21:00:34,955 INFO L208 tifierPushTermWalker]: Run 480 iterations without descend maybe there is a nontermination bug. Received shutdown request... [2022-09-20 21:01:10,383 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 21:01:10,384 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 [2022-09-20 21:01:11,091 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-09-20 21:01:11,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-09-20 21:01:11,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:11,303 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-963-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-09-20 21:01:11,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-09-20 21:01:11,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-09-20 21:01:11,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-09-20 21:01:11,305 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-09-20 21:01:11,305 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1] [2022-09-20 21:01:11,308 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 21:01:11,308 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 21:01:11,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 09:01:11 BasicIcfg [2022-09-20 21:01:11,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 21:01:11,312 INFO L158 Benchmark]: Toolchain (without parser) took 872361.42ms. Allocated memory was 256.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 230.3MB in the beginning and 1.2GB in the end (delta: -984.4MB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-09-20 21:01:11,312 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 21:01:11,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.83ms. Allocated memory is still 256.9MB. Free memory was 230.0MB in the beginning and 226.3MB in the end (delta: 3.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-09-20 21:01:11,313 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.03ms. Allocated memory is still 256.9MB. Free memory was 226.3MB in the beginning and 224.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 21:01:11,313 INFO L158 Benchmark]: Boogie Preprocessor took 25.73ms. Allocated memory is still 256.9MB. Free memory was 224.8MB in the beginning and 223.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 21:01:11,313 INFO L158 Benchmark]: RCFGBuilder took 388.18ms. Allocated memory is still 256.9MB. Free memory was 223.2MB in the beginning and 209.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 21:01:11,313 INFO L158 Benchmark]: TraceAbstraction took 871664.63ms. Allocated memory was 256.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 209.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-09-20 21:01:11,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.83ms. Allocated memory is still 256.9MB. Free memory was 230.0MB in the beginning and 226.3MB in the end (delta: 3.7MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.03ms. Allocated memory is still 256.9MB. Free memory was 226.3MB in the beginning and 224.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.73ms. Allocated memory is still 256.9MB. Free memory was 224.8MB in the beginning and 223.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 388.18ms. Allocated memory is still 256.9MB. Free memory was 223.2MB in the beginning and 209.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 871664.63ms. Allocated memory was 256.9MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 209.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-963-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 89]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-963-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 87]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-963-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 88]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-963-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 86]: 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 99 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-963-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 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: 871.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 829 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 829 mSDsluCounter, 372 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 548 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1557 IncrementalHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 170 mSDtfsCounter, 1557 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 652 GetRequests, 567 SyntacticMatches, 6 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1123occurred in iteration=10, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1229 NumberOfCodeBlocks, 1229 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1498 ConstructedInterpolants, 0 QuantifiedInterpolants, 12854 SizeOfPredicates, 30 NumberOfNonLiveVariables, 759 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 5/14 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