/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/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:00:48,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:00:48,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:00:48,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:00:48,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:00:48,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:00:48,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:00:48,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:00:48,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:00:48,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:00:48,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:00:48,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:00:48,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:00:48,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:00:48,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:00:48,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:00:48,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:00:48,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:00:48,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:00:48,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:00:48,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:00:48,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:00:48,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:00:48,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:00:48,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:00:48,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:00:48,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:00:48,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:00:48,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:00:48,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:00:48,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:00:48,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:00:48,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:00:48,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:00:48,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:00:48,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:00:48,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:00:48,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:00:48,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:00:48,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:00:48,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:00:48,162 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 21:00:48,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:00:48,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:00:48,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:00:48,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:00:48,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:00:48,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:00:48,192 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:00:48,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:00:48,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:00:48,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:00:48,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:00:48,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:00:48,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:00:48,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:00:48,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:00:48,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:00:48,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:00:48,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:00:48,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:00:48,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:00:48,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:00:48,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:00:48,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:00:48,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:00:48,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:00:48,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:00:48,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:00:48,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:00:48,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:00:48,198 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:00:48,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:00:48,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:00:48,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:00:48,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:00:48,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:00:48,484 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:00:48,485 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:00:48,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-20 21:00:48,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa111bcc/34abf1e658e74ca38447d19b78da998a/FLAG0f763f9b5 [2022-09-20 21:00:48,949 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:00:48,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-20 21:00:48,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa111bcc/34abf1e658e74ca38447d19b78da998a/FLAG0f763f9b5 [2022-09-20 21:00:48,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa111bcc/34abf1e658e74ca38447d19b78da998a [2022-09-20 21:00:48,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:00:48,983 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:00:48,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:00:48,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:00:48,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:00:48,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:00:48" (1/1) ... [2022-09-20 21:00:48,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716f9a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:48, skipping insertion in model container [2022-09-20 21:00:48,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:00:48" (1/1) ... [2022-09-20 21:00:48,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:00:49,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:00:49,268 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-09-20 21:00:49,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:00:49,296 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:00:49,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-09-20 21:00:49,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:00:49,353 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:00:49,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49 WrapperNode [2022-09-20 21:00:49,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:00:49,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:00:49,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:00:49,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:00:49,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,422 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-09-20 21:00:49,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:00:49,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:00:49,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:00:49,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:00:49,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:00:49,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:00:49,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:00:49,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:00:49,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (1/1) ... [2022-09-20 21:00:49,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:00:49,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:00:49,521 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 21:00:49,525 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 21:00:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:00:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:00:49,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:00:49,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:00:49,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:00:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:00:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:00:49,570 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 21:00:49,688 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:00:49,690 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:00:50,142 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:00:50,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:00:50,162 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-20 21:00:50,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:00:50 BoogieIcfgContainer [2022-09-20 21:00:50,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:00:50,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:00:50,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:00:50,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:00:50,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:00:48" (1/3) ... [2022-09-20 21:00:50,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742920a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:00:50, skipping insertion in model container [2022-09-20 21:00:50,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:00:49" (2/3) ... [2022-09-20 21:00:50,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742920a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:00:50, skipping insertion in model container [2022-09-20 21:00:50,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:00:50" (3/3) ... [2022-09-20 21:00:50,176 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-09-20 21:00:50,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:00:50,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:00:50,196 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:00:50,310 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 21:00:50,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 396 transitions, 808 flow [2022-09-20 21:00:50,522 INFO L130 PetriNetUnfolder]: 28/394 cut-off events. [2022-09-20 21:00:50,522 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:00:50,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 394 events. 28/394 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 915 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 271. Up to 2 conditions per place. [2022-09-20 21:00:50,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 396 transitions, 808 flow [2022-09-20 21:00:50,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 385 transitions, 782 flow [2022-09-20 21:00:50,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:00:50,567 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;@2c809a58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:00:50,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 21:00:50,653 INFO L130 PetriNetUnfolder]: 28/384 cut-off events. [2022-09-20 21:00:50,653 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 21:00:50,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:50,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:50,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:00:50,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash -917878546, now seen corresponding path program 1 times [2022-09-20 21:00:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:50,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001851237] [2022-09-20 21:00:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:50,937 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 21:00:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001851237] [2022-09-20 21:00:50,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001851237] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:50,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:50,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:00:50,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722348794] [2022-09-20 21:00:50,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:50,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:00:50,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:50,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:00:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:00:50,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 396 [2022-09-20 21:00:50,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 782 flow. Second operand has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 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 21:00:50,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:50,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 396 [2022-09-20 21:00:50,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:51,083 INFO L130 PetriNetUnfolder]: 5/362 cut-off events. [2022-09-20 21:00:51,083 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-09-20 21:00:51,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 362 events. 5/362 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 907 event pairs, 0 based on Foata normal form. 29/366 useless extension candidates. Maximal degree in co-relation 254. Up to 5 conditions per place. [2022-09-20 21:00:51,091 INFO L137 encePairwiseOnDemand]: 373/396 looper letters, 4 selfloop transitions, 0 changer transitions 4/362 dead transitions. [2022-09-20 21:00:51,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 744 flow [2022-09-20 21:00:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:00:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:00:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-09-20 21:00:51,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9633838383838383 [2022-09-20 21:00:51,109 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-09-20 21:00:51,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-09-20 21:00:51,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:51,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-09-20 21:00:51,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 states have internal predecessors, (763), 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 21:00:51,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 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 21:00:51,129 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 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 21:00:51,131 INFO L175 Difference]: Start difference. First operand has 364 places, 385 transitions, 782 flow. Second operand 2 states and 763 transitions. [2022-09-20 21:00:51,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 744 flow [2022-09-20 21:00:51,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 21:00:51,149 INFO L231 Difference]: Finished difference. Result has 361 places, 358 transitions, 720 flow [2022-09-20 21:00:51,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=720, PETRI_PLACES=361, PETRI_TRANSITIONS=358} [2022-09-20 21:00:51,157 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, -3 predicate places. [2022-09-20 21:00:51,158 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 358 transitions, 720 flow [2022-09-20 21:00:51,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 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 21:00:51,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:51,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:00:51,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:00:51,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -441871954, now seen corresponding path program 1 times [2022-09-20 21:00:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271977596] [2022-09-20 21:00:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:51,837 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 21:00:51,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:51,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271977596] [2022-09-20 21:00:51,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271977596] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:51,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:51,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:00:51,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227476537] [2022-09-20 21:00:51,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:51,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:00:51,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:51,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:00:51,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:00:51,849 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:00:51,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 358 transitions, 720 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:00:51,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:51,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:00:51,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:00:55,945 INFO L130 PetriNetUnfolder]: 4047/15008 cut-off events. [2022-09-20 21:00:55,945 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-09-20 21:00:55,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 15008 events. 4047/15008 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 151325 event pairs, 841 based on Foata normal form. 1/14058 useless extension candidates. Maximal degree in co-relation 22851. Up to 4039 conditions per place. [2022-09-20 21:00:56,047 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 574 selfloop transitions, 75 changer transitions 33/928 dead transitions. [2022-09-20 21:00:56,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 928 transitions, 3247 flow [2022-09-20 21:00:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-20 21:00:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-20 21:00:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8875 transitions. [2022-09-20 21:00:56,070 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7003630050505051 [2022-09-20 21:00:56,070 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8875 transitions. [2022-09-20 21:00:56,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8875 transitions. [2022-09-20 21:00:56,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:00:56,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8875 transitions. [2022-09-20 21:00:56,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 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 21:00:56,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 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 21:00:56,133 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 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 21:00:56,134 INFO L175 Difference]: Start difference. First operand has 361 places, 358 transitions, 720 flow. Second operand 32 states and 8875 transitions. [2022-09-20 21:00:56,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 928 transitions, 3247 flow [2022-09-20 21:00:56,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 928 transitions, 3247 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:00:56,151 INFO L231 Difference]: Finished difference. Result has 414 places, 433 transitions, 1231 flow [2022-09-20 21:00:56,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1231, PETRI_PLACES=414, PETRI_TRANSITIONS=433} [2022-09-20 21:00:56,153 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 50 predicate places. [2022-09-20 21:00:56,153 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 433 transitions, 1231 flow [2022-09-20 21:00:56,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:00:56,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:00:56,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:00:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:00:56,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:00:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:00:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1778856486, now seen corresponding path program 2 times [2022-09-20 21:00:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:00:56,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804725442] [2022-09-20 21:00:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:00:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:00:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:00:56,607 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 21:00:56,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:00:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804725442] [2022-09-20 21:00:56,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804725442] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:00:56,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:00:56,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:00:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244695231] [2022-09-20 21:00:56,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:00:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:00:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:00:56,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:00:56,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:00:56,616 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:00:56,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 433 transitions, 1231 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:00:56,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:00:56,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:00:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:01,620 INFO L130 PetriNetUnfolder]: 4738/17502 cut-off events. [2022-09-20 21:01:01,620 INFO L131 PetriNetUnfolder]: For 6448/6500 co-relation queries the response was YES. [2022-09-20 21:01:01,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33380 conditions, 17502 events. 4738/17502 cut-off events. For 6448/6500 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 182049 event pairs, 1131 based on Foata normal form. 30/16430 useless extension candidates. Maximal degree in co-relation 33350. Up to 4459 conditions per place. [2022-09-20 21:01:01,782 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 509 selfloop transitions, 164 changer transitions 17/936 dead transitions. [2022-09-20 21:01:01,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 936 transitions, 4435 flow [2022-09-20 21:01:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 21:01:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 21:01:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11120 transitions. [2022-09-20 21:01:01,805 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6848977580684897 [2022-09-20 21:01:01,806 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11120 transitions. [2022-09-20 21:01:01,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11120 transitions. [2022-09-20 21:01:01,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:01,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11120 transitions. [2022-09-20 21:01:01,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 271.219512195122) internal successors, (11120), 41 states have internal predecessors, (11120), 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 21:01:01,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 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 21:01:01,883 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 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 21:01:01,883 INFO L175 Difference]: Start difference. First operand has 414 places, 433 transitions, 1231 flow. Second operand 41 states and 11120 transitions. [2022-09-20 21:01:01,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 936 transitions, 4435 flow [2022-09-20 21:01:01,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 936 transitions, 4289 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-09-20 21:01:01,982 INFO L231 Difference]: Finished difference. Result has 470 places, 546 transitions, 2416 flow [2022-09-20 21:01:01,983 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2416, PETRI_PLACES=470, PETRI_TRANSITIONS=546} [2022-09-20 21:01:01,985 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 106 predicate places. [2022-09-20 21:01:01,986 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 546 transitions, 2416 flow [2022-09-20 21:01:01,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:01,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:01,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:01,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:01:01,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash -525432176, now seen corresponding path program 3 times [2022-09-20 21:01:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:01,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427083532] [2022-09-20 21:01:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:02,475 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 21:01:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:02,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427083532] [2022-09-20 21:01:02,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427083532] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:02,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:02,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004078542] [2022-09-20 21:01:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:02,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:02,482 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:02,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 546 transitions, 2416 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:02,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:02,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:02,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:08,021 INFO L130 PetriNetUnfolder]: 4893/17993 cut-off events. [2022-09-20 21:01:08,021 INFO L131 PetriNetUnfolder]: For 16546/16601 co-relation queries the response was YES. [2022-09-20 21:01:08,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39333 conditions, 17993 events. 4893/17993 cut-off events. For 16546/16601 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 187986 event pairs, 824 based on Foata normal form. 40/16945 useless extension candidates. Maximal degree in co-relation 39278. Up to 4582 conditions per place. [2022-09-20 21:01:08,177 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 724 selfloop transitions, 164 changer transitions 23/1157 dead transitions. [2022-09-20 21:01:08,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1157 transitions, 6934 flow [2022-09-20 21:01:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-20 21:01:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-20 21:01:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8924 transitions. [2022-09-20 21:01:08,196 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.704229797979798 [2022-09-20 21:01:08,197 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8924 transitions. [2022-09-20 21:01:08,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8924 transitions. [2022-09-20 21:01:08,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:08,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8924 transitions. [2022-09-20 21:01:08,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 278.875) internal successors, (8924), 32 states have internal predecessors, (8924), 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 21:01:08,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 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 21:01:08,241 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 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 21:01:08,241 INFO L175 Difference]: Start difference. First operand has 470 places, 546 transitions, 2416 flow. Second operand 32 states and 8924 transitions. [2022-09-20 21:01:08,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1157 transitions, 6934 flow [2022-09-20 21:01:08,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 1157 transitions, 6596 flow, removed 150 selfloop flow, removed 9 redundant places. [2022-09-20 21:01:08,396 INFO L231 Difference]: Finished difference. Result has 504 places, 588 transitions, 3142 flow [2022-09-20 21:01:08,397 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3142, PETRI_PLACES=504, PETRI_TRANSITIONS=588} [2022-09-20 21:01:08,398 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 140 predicate places. [2022-09-20 21:01:08,398 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 588 transitions, 3142 flow [2022-09-20 21:01:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:08,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:08,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:08,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:01:08,404 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1779878828, now seen corresponding path program 4 times [2022-09-20 21:01:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:08,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038530741] [2022-09-20 21:01:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:08,803 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 21:01:08,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:08,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038530741] [2022-09-20 21:01:08,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038530741] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:08,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:08,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663087179] [2022-09-20 21:01:08,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:08,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:08,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:08,808 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:08,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 588 transitions, 3142 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:08,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:08,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:08,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:14,160 INFO L130 PetriNetUnfolder]: 5319/19719 cut-off events. [2022-09-20 21:01:14,160 INFO L131 PetriNetUnfolder]: For 21628/21700 co-relation queries the response was YES. [2022-09-20 21:01:14,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44249 conditions, 19719 events. 5319/19719 cut-off events. For 21628/21700 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 208921 event pairs, 886 based on Foata normal form. 39/18547 useless extension candidates. Maximal degree in co-relation 44180. Up to 5594 conditions per place. [2022-09-20 21:01:14,484 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 685 selfloop transitions, 181 changer transitions 16/1128 dead transitions. [2022-09-20 21:01:14,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1128 transitions, 7373 flow [2022-09-20 21:01:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-20 21:01:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-20 21:01:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9353 transitions. [2022-09-20 21:01:14,499 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6946672608437314 [2022-09-20 21:01:14,500 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9353 transitions. [2022-09-20 21:01:14,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9353 transitions. [2022-09-20 21:01:14,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:14,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9353 transitions. [2022-09-20 21:01:14,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 275.0882352941176) internal successors, (9353), 34 states have internal predecessors, (9353), 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 21:01:14,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 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 21:01:14,541 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 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 21:01:14,541 INFO L175 Difference]: Start difference. First operand has 504 places, 588 transitions, 3142 flow. Second operand 34 states and 9353 transitions. [2022-09-20 21:01:14,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1128 transitions, 7373 flow [2022-09-20 21:01:14,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 1128 transitions, 6991 flow, removed 28 selfloop flow, removed 17 redundant places. [2022-09-20 21:01:14,766 INFO L231 Difference]: Finished difference. Result has 542 places, 693 transitions, 4479 flow [2022-09-20 21:01:14,767 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4479, PETRI_PLACES=542, PETRI_TRANSITIONS=693} [2022-09-20 21:01:14,769 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 178 predicate places. [2022-09-20 21:01:14,770 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 693 transitions, 4479 flow [2022-09-20 21:01:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:14,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:14,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:14,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:01:14,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:14,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:14,773 INFO L85 PathProgramCache]: Analyzing trace with hash -531397100, now seen corresponding path program 5 times [2022-09-20 21:01:14,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:14,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511367435] [2022-09-20 21:01:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:14,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:15,141 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 21:01:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511367435] [2022-09-20 21:01:15,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511367435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:15,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:15,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851531147] [2022-09-20 21:01:15,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:15,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:15,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:15,147 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:15,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 693 transitions, 4479 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:15,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:15,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:15,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:21,752 INFO L130 PetriNetUnfolder]: 5658/21341 cut-off events. [2022-09-20 21:01:21,753 INFO L131 PetriNetUnfolder]: For 34868/35008 co-relation queries the response was YES. [2022-09-20 21:01:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53019 conditions, 21341 events. 5658/21341 cut-off events. For 34868/35008 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 230633 event pairs, 949 based on Foata normal form. 83/20089 useless extension candidates. Maximal degree in co-relation 52927. Up to 5612 conditions per place. [2022-09-20 21:01:22,243 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 757 selfloop transitions, 265 changer transitions 17/1285 dead transitions. [2022-09-20 21:01:22,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1285 transitions, 10020 flow [2022-09-20 21:01:22,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 21:01:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 21:01:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11202 transitions. [2022-09-20 21:01:22,255 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6899482631189948 [2022-09-20 21:01:22,256 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11202 transitions. [2022-09-20 21:01:22,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11202 transitions. [2022-09-20 21:01:22,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:22,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11202 transitions. [2022-09-20 21:01:22,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 273.219512195122) internal successors, (11202), 41 states have internal predecessors, (11202), 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 21:01:22,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 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 21:01:22,296 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 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 21:01:22,296 INFO L175 Difference]: Start difference. First operand has 542 places, 693 transitions, 4479 flow. Second operand 41 states and 11202 transitions. [2022-09-20 21:01:22,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1285 transitions, 10020 flow [2022-09-20 21:01:22,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1285 transitions, 9504 flow, removed 235 selfloop flow, removed 8 redundant places. [2022-09-20 21:01:22,816 INFO L231 Difference]: Finished difference. Result has 591 places, 794 transitions, 6121 flow [2022-09-20 21:01:22,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=4221, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=6121, PETRI_PLACES=591, PETRI_TRANSITIONS=794} [2022-09-20 21:01:22,818 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 227 predicate places. [2022-09-20 21:01:22,818 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 794 transitions, 6121 flow [2022-09-20 21:01:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:22,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:22,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 21:01:22,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1276881486, now seen corresponding path program 6 times [2022-09-20 21:01:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:22,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30222390] [2022-09-20 21:01:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:23,190 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 21:01:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:23,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30222390] [2022-09-20 21:01:23,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30222390] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:23,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:23,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289999833] [2022-09-20 21:01:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:23,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:23,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:23,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 794 transitions, 6121 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:23,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:23,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:30,484 INFO L130 PetriNetUnfolder]: 5909/22251 cut-off events. [2022-09-20 21:01:30,485 INFO L131 PetriNetUnfolder]: For 45625/45843 co-relation queries the response was YES. [2022-09-20 21:01:31,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57701 conditions, 22251 events. 5909/22251 cut-off events. For 45625/45843 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 243687 event pairs, 1220 based on Foata normal form. 138/21012 useless extension candidates. Maximal degree in co-relation 57592. Up to 5648 conditions per place. [2022-09-20 21:01:31,094 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 688 selfloop transitions, 356 changer transitions 17/1307 dead transitions. [2022-09-20 21:01:31,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 1307 transitions, 11304 flow [2022-09-20 21:01:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-20 21:01:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-20 21:01:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11693 transitions. [2022-09-20 21:01:31,102 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6866925064599483 [2022-09-20 21:01:31,102 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11693 transitions. [2022-09-20 21:01:31,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11693 transitions. [2022-09-20 21:01:31,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:31,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11693 transitions. [2022-09-20 21:01:31,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 271.93023255813955) internal successors, (11693), 43 states have internal predecessors, (11693), 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 21:01:31,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 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 21:01:31,138 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 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 21:01:31,138 INFO L175 Difference]: Start difference. First operand has 591 places, 794 transitions, 6121 flow. Second operand 43 states and 11693 transitions. [2022-09-20 21:01:31,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 1307 transitions, 11304 flow [2022-09-20 21:01:31,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1307 transitions, 10821 flow, removed 141 selfloop flow, removed 14 redundant places. [2022-09-20 21:01:31,548 INFO L231 Difference]: Finished difference. Result has 631 places, 877 transitions, 7744 flow [2022-09-20 21:01:31,549 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=5783, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=7744, PETRI_PLACES=631, PETRI_TRANSITIONS=877} [2022-09-20 21:01:31,550 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 267 predicate places. [2022-09-20 21:01:31,550 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 877 transitions, 7744 flow [2022-09-20 21:01:31,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:31,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:31,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:31,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 21:01:31,551 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash 532067508, now seen corresponding path program 7 times [2022-09-20 21:01:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:31,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971483354] [2022-09-20 21:01:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:31,873 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 21:01:31,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971483354] [2022-09-20 21:01:31,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971483354] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:31,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:31,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:31,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074133372] [2022-09-20 21:01:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:31,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:31,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:31,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:31,880 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:31,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 877 transitions, 7744 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:31,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:31,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:31,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:39,676 INFO L130 PetriNetUnfolder]: 6427/24341 cut-off events. [2022-09-20 21:01:39,676 INFO L131 PetriNetUnfolder]: For 66147/66387 co-relation queries the response was YES. [2022-09-20 21:01:40,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67285 conditions, 24341 events. 6427/24341 cut-off events. For 66147/66387 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 272552 event pairs, 1007 based on Foata normal form. 164/23027 useless extension candidates. Maximal degree in co-relation 67161. Up to 6038 conditions per place. [2022-09-20 21:01:40,318 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 858 selfloop transitions, 357 changer transitions 15/1476 dead transitions. [2022-09-20 21:01:40,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 662 places, 1476 transitions, 14382 flow [2022-09-20 21:01:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-20 21:01:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-20 21:01:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 10700 transitions. [2022-09-20 21:01:40,327 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6928256928256928 [2022-09-20 21:01:40,327 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 10700 transitions. [2022-09-20 21:01:40,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 10700 transitions. [2022-09-20 21:01:40,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:40,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 10700 transitions. [2022-09-20 21:01:40,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 274.35897435897436) internal successors, (10700), 39 states have internal predecessors, (10700), 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 21:01:40,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 396.0) internal successors, (15840), 40 states have internal predecessors, (15840), 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 21:01:40,369 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 396.0) internal successors, (15840), 40 states have internal predecessors, (15840), 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 21:01:40,370 INFO L175 Difference]: Start difference. First operand has 631 places, 877 transitions, 7744 flow. Second operand 39 states and 10700 transitions. [2022-09-20 21:01:40,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 662 places, 1476 transitions, 14382 flow [2022-09-20 21:01:40,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 1476 transitions, 13671 flow, removed 128 selfloop flow, removed 18 redundant places. [2022-09-20 21:01:40,961 INFO L231 Difference]: Finished difference. Result has 667 places, 990 transitions, 9955 flow [2022-09-20 21:01:40,962 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=7227, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=9955, PETRI_PLACES=667, PETRI_TRANSITIONS=990} [2022-09-20 21:01:40,963 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 303 predicate places. [2022-09-20 21:01:40,963 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 990 transitions, 9955 flow [2022-09-20 21:01:40,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:40,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:40,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:40,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 21:01:40,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 384092554, now seen corresponding path program 8 times [2022-09-20 21:01:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91871973] [2022-09-20 21:01:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:41,284 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 21:01:41,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91871973] [2022-09-20 21:01:41,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91871973] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:41,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:41,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:41,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386749520] [2022-09-20 21:01:41,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:41,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:41,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:41,290 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:41,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 990 transitions, 9955 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:41,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:41,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:50,141 INFO L130 PetriNetUnfolder]: 6824/25919 cut-off events. [2022-09-20 21:01:50,142 INFO L131 PetriNetUnfolder]: For 90601/90937 co-relation queries the response was YES. [2022-09-20 21:01:50,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76305 conditions, 25919 events. 6824/25919 cut-off events. For 90601/90937 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 295182 event pairs, 1287 based on Foata normal form. 210/24528 useless extension candidates. Maximal degree in co-relation 76162. Up to 5988 conditions per place. [2022-09-20 21:01:51,060 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 831 selfloop transitions, 452 changer transitions 17/1546 dead transitions. [2022-09-20 21:01:51,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 1546 transitions, 16652 flow [2022-09-20 21:01:51,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-20 21:01:51,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-20 21:01:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 11985 transitions. [2022-09-20 21:01:51,071 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6878443526170799 [2022-09-20 21:01:51,071 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 11985 transitions. [2022-09-20 21:01:51,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 11985 transitions. [2022-09-20 21:01:51,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:51,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 11985 transitions. [2022-09-20 21:01:51,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 272.3863636363636) internal successors, (11985), 44 states have internal predecessors, (11985), 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 21:01:51,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 396.0) internal successors, (17820), 45 states have internal predecessors, (17820), 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 21:01:51,102 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 396.0) internal successors, (17820), 45 states have internal predecessors, (17820), 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 21:01:51,102 INFO L175 Difference]: Start difference. First operand has 667 places, 990 transitions, 9955 flow. Second operand 44 states and 11985 transitions. [2022-09-20 21:01:51,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 1546 transitions, 16652 flow [2022-09-20 21:01:52,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 1546 transitions, 15884 flow, removed 251 selfloop flow, removed 12 redundant places. [2022-09-20 21:01:52,143 INFO L231 Difference]: Finished difference. Result has 715 places, 1085 transitions, 12073 flow [2022-09-20 21:01:52,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=9352, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12073, PETRI_PLACES=715, PETRI_TRANSITIONS=1085} [2022-09-20 21:01:52,145 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 351 predicate places. [2022-09-20 21:01:52,145 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 1085 transitions, 12073 flow [2022-09-20 21:01:52,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:52,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:52,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:52,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 21:01:52,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:01:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2103490418, now seen corresponding path program 9 times [2022-09-20 21:01:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:52,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121928700] [2022-09-20 21:01:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:52,434 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 21:01:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:52,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121928700] [2022-09-20 21:01:52,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121928700] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:52,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:52,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:01:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881477534] [2022-09-20 21:01:52,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:52,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:01:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:01:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:01:52,440 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:01:52,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 1085 transitions, 12073 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:01:52,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:52,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:01:52,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:02,571 INFO L130 PetriNetUnfolder]: 7080/26683 cut-off events. [2022-09-20 21:02:02,571 INFO L131 PetriNetUnfolder]: For 114752/115097 co-relation queries the response was YES. [2022-09-20 21:02:03,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82876 conditions, 26683 events. 7080/26683 cut-off events. For 114752/115097 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 306120 event pairs, 1021 based on Foata normal form. 222/25328 useless extension candidates. Maximal degree in co-relation 82715. Up to 6482 conditions per place. [2022-09-20 21:02:03,567 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 991 selfloop transitions, 453 changer transitions 15/1705 dead transitions. [2022-09-20 21:02:03,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 1705 transitions, 19499 flow [2022-09-20 21:02:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 21:02:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 21:02:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11271 transitions. [2022-09-20 21:02:03,579 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6941980783444198 [2022-09-20 21:02:03,579 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11271 transitions. [2022-09-20 21:02:03,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11271 transitions. [2022-09-20 21:02:03,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:03,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11271 transitions. [2022-09-20 21:02:03,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 274.9024390243902) internal successors, (11271), 41 states have internal predecessors, (11271), 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 21:02:03,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 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 21:02:03,609 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 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 21:02:03,610 INFO L175 Difference]: Start difference. First operand has 715 places, 1085 transitions, 12073 flow. Second operand 41 states and 11271 transitions. [2022-09-20 21:02:03,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 1705 transitions, 19499 flow [2022-09-20 21:02:04,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 1705 transitions, 18598 flow, removed 222 selfloop flow, removed 16 redundant places. [2022-09-20 21:02:04,898 INFO L231 Difference]: Finished difference. Result has 751 places, 1174 transitions, 13923 flow [2022-09-20 21:02:04,899 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=11334, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=13923, PETRI_PLACES=751, PETRI_TRANSITIONS=1174} [2022-09-20 21:02:04,900 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 387 predicate places. [2022-09-20 21:02:04,900 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 1174 transitions, 13923 flow [2022-09-20 21:02:04,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:02:04,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:04,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:04,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 21:02:04,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:02:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash -267528522, now seen corresponding path program 10 times [2022-09-20 21:02:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:04,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901491086] [2022-09-20 21:02:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:05,212 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 21:02:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:05,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901491086] [2022-09-20 21:02:05,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901491086] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:02:05,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:02:05,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:02:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934219438] [2022-09-20 21:02:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:02:05,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:02:05,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:05,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:02:05,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:02:05,217 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:02:05,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 1174 transitions, 13923 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:02:05,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:05,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:02:05,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:15,445 INFO L130 PetriNetUnfolder]: 7406/28208 cut-off events. [2022-09-20 21:02:15,445 INFO L131 PetriNetUnfolder]: For 129398/129825 co-relation queries the response was YES. [2022-09-20 21:02:16,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89278 conditions, 28208 events. 7406/28208 cut-off events. For 129398/129825 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 327238 event pairs, 1152 based on Foata normal form. 264/26750 useless extension candidates. Maximal degree in co-relation 89102. Up to 7452 conditions per place. [2022-09-20 21:02:16,300 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 1088 selfloop transitions, 386 changer transitions 16/1736 dead transitions. [2022-09-20 21:02:16,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 1736 transitions, 21304 flow [2022-09-20 21:02:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-20 21:02:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-20 21:02:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 10164 transitions. [2022-09-20 21:02:16,308 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2022-09-20 21:02:16,309 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 10164 transitions. [2022-09-20 21:02:16,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 10164 transitions. [2022-09-20 21:02:16,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:16,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 10164 transitions. [2022-09-20 21:02:16,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 274.7027027027027) internal successors, (10164), 37 states have internal predecessors, (10164), 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 21:02:16,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 396.0) internal successors, (15048), 38 states have internal predecessors, (15048), 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 21:02:16,445 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 396.0) internal successors, (15048), 38 states have internal predecessors, (15048), 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 21:02:16,446 INFO L175 Difference]: Start difference. First operand has 751 places, 1174 transitions, 13923 flow. Second operand 37 states and 10164 transitions. [2022-09-20 21:02:16,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 1736 transitions, 21304 flow [2022-09-20 21:02:17,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 1736 transitions, 20558 flow, removed 122 selfloop flow, removed 17 redundant places. [2022-09-20 21:02:17,799 INFO L231 Difference]: Finished difference. Result has 788 places, 1262 transitions, 15754 flow [2022-09-20 21:02:17,800 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=13290, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=15754, PETRI_PLACES=788, PETRI_TRANSITIONS=1262} [2022-09-20 21:02:17,801 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 424 predicate places. [2022-09-20 21:02:17,801 INFO L495 AbstractCegarLoop]: Abstraction has has 788 places, 1262 transitions, 15754 flow [2022-09-20 21:02:17,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:02:17,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:17,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:17,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 21:02:17,802 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:02:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1018111022, now seen corresponding path program 11 times [2022-09-20 21:02:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:17,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545435714] [2022-09-20 21:02:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:18,143 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 21:02:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:18,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545435714] [2022-09-20 21:02:18,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545435714] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:02:18,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:02:18,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:02:18,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562412754] [2022-09-20 21:02:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:02:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:02:18,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:02:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:02:18,147 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:02:18,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 1262 transitions, 15754 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:02:18,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:18,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:02:18,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:29,897 INFO L130 PetriNetUnfolder]: 7458/28101 cut-off events. [2022-09-20 21:02:29,897 INFO L131 PetriNetUnfolder]: For 156632/157068 co-relation queries the response was YES. [2022-09-20 21:02:31,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94866 conditions, 28101 events. 7458/28101 cut-off events. For 156632/157068 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 325629 event pairs, 1140 based on Foata normal form. 275/26722 useless extension candidates. Maximal degree in co-relation 94671. Up to 6920 conditions per place. [2022-09-20 21:02:31,377 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 1016 selfloop transitions, 502 changer transitions 23/1787 dead transitions. [2022-09-20 21:02:31,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 1787 transitions, 22648 flow [2022-09-20 21:02:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-20 21:02:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-20 21:02:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 10178 transitions. [2022-09-20 21:02:31,382 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6946491946491946 [2022-09-20 21:02:31,383 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 10178 transitions. [2022-09-20 21:02:31,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 10178 transitions. [2022-09-20 21:02:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:31,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 10178 transitions. [2022-09-20 21:02:31,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 275.0810810810811) internal successors, (10178), 37 states have internal predecessors, (10178), 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 21:02:31,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 396.0) internal successors, (15048), 38 states have internal predecessors, (15048), 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 21:02:31,406 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 396.0) internal successors, (15048), 38 states have internal predecessors, (15048), 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 21:02:31,406 INFO L175 Difference]: Start difference. First operand has 788 places, 1262 transitions, 15754 flow. Second operand 37 states and 10178 transitions. [2022-09-20 21:02:31,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 1787 transitions, 22648 flow [2022-09-20 21:02:33,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 1787 transitions, 21942 flow, removed 204 selfloop flow, removed 12 redundant places. [2022-09-20 21:02:33,352 INFO L231 Difference]: Finished difference. Result has 827 places, 1305 transitions, 17212 flow [2022-09-20 21:02:33,353 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=15161, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17212, PETRI_PLACES=827, PETRI_TRANSITIONS=1305} [2022-09-20 21:02:33,354 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 463 predicate places. [2022-09-20 21:02:33,354 INFO L495 AbstractCegarLoop]: Abstraction has has 827 places, 1305 transitions, 17212 flow [2022-09-20 21:02:33,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:02:33,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:33,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:33,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 21:02:33,355 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 21:02:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1956323616, now seen corresponding path program 12 times [2022-09-20 21:02:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:33,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315211392] [2022-09-20 21:02:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:33,674 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 21:02:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:33,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315211392] [2022-09-20 21:02:33,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315211392] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:02:33,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:02:33,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 21:02:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810825967] [2022-09-20 21:02:33,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:02:33,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 21:02:33,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 21:02:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 21:02:33,678 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 21:02:33,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 1305 transitions, 17212 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 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 21:02:33,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:33,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 21:02:33,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand