/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/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:32:54,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:32:54,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:32:54,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:32:54,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:32:54,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:32:54,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:32:54,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:32:54,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:32:54,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:32:54,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:32:54,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:32:54,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:32:54,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:32:54,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:32:54,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:32:54,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:32:54,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:32:54,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:32:54,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:32:54,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:32:54,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:32:54,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:32:54,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:32:54,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:32:54,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:32:54,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:32:54,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:32:54,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:32:54,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:32:54,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:32:54,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:32:54,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:32:54,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:32:54,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:32:54,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:32:54,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:32:54,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:32:54,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:32:54,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:32:54,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:32:54,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:32:54,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:32:54,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:32:54,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:32:54,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:32:54,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:32:54,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:32:54,467 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:32:54,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:32:54,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:32:54,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:32:54,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:32:54,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:32:54,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:32:54,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:32:54,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:32:54,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:32:54,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:32:54,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:32:54,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:32:54,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:32:54,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:32:54,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:32:54,472 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:32:54,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:32:54,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:32:54,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:32:54,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:32:54,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:32:54,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:32:54,752 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:32:54,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 20:32:54,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83aac79f6/e85ee8ebc1714780b45bbfea26fb265f/FLAGf031729d1 [2022-09-20 20:32:55,281 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:32:55,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 20:32:55,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83aac79f6/e85ee8ebc1714780b45bbfea26fb265f/FLAGf031729d1 [2022-09-20 20:32:55,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83aac79f6/e85ee8ebc1714780b45bbfea26fb265f [2022-09-20 20:32:55,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:32:55,657 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:32:55,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:32:55,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:32:55,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:32:55,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:32:55" (1/1) ... [2022-09-20 20:32:55,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d41674a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:55, skipping insertion in model container [2022-09-20 20:32:55,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:32:55" (1/1) ... [2022-09-20 20:32:55,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:32:55,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:32:55,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 20:32:56,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:32:56,069 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:32:56,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 20:32:56,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:32:56,185 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:32:56,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56 WrapperNode [2022-09-20 20:32:56,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:32:56,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:32:56,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:32:56,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:32:56,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,272 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-09-20 20:32:56,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:32:56,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:32:56,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:32:56,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:32:56,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:32:56,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:32:56,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:32:56,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:32:56,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (1/1) ... [2022-09-20 20:32:56,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:32:56,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:32:56,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 20:32:56,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 20:32:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:32:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 20:32:56,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:32:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:32:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:32:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 20:32:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 20:32:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 20:32:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 20:32:56,413 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 20:32:56,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 20:32:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-09-20 20:32:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-09-20 20:32:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:32:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 20:32:56,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:32:56,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:32:56,416 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:32:56,594 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:32:56,595 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:32:57,055 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:32:57,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:32:57,444 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:32:57,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:32:57 BoogieIcfgContainer [2022-09-20 20:32:57,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:32:57,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:32:57,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:32:57,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:32:57,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:32:55" (1/3) ... [2022-09-20 20:32:57,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ce16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:32:57, skipping insertion in model container [2022-09-20 20:32:57,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:32:56" (2/3) ... [2022-09-20 20:32:57,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ce16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:32:57, skipping insertion in model container [2022-09-20 20:32:57,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:32:57" (3/3) ... [2022-09-20 20:32:57,455 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 20:32:57,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:32:57,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-20 20:32:57,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:32:57,548 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 20:32:57,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-09-20 20:32:57,664 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-09-20 20:32:57,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:32:57,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-09-20 20:32:57,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-09-20 20:32:57,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-09-20 20:32:57,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:32:57,690 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;@74c32c44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:32:57,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 20:32:57,704 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-09-20 20:32:57,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:32:57,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:32:57,706 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] [2022-09-20 20:32:57,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:32:57,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:32:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1338494467, now seen corresponding path program 1 times [2022-09-20 20:32:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:32:57,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533843749] [2022-09-20 20:32:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:32:57,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:32:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:32:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:32:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:32:57,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533843749] [2022-09-20 20:32:57,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533843749] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:32:57,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:32:57,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:32:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268372529] [2022-09-20 20:32:57,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:32:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:32:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:32:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:32:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:32:58,023 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-09-20 20:32:58,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:32:58,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:32:58,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-09-20 20:32:58,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:32:58,312 INFO L130 PetriNetUnfolder]: 162/620 cut-off events. [2022-09-20 20:32:58,312 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-09-20 20:32:58,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3378 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-09-20 20:32:58,325 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-09-20 20:32:58,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-09-20 20:32:58,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:32:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:32:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-09-20 20:32:58,345 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-09-20 20:32:58,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-09-20 20:32:58,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-09-20 20:32:58,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:32:58,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-09-20 20:32:58,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:32:58,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:32:58,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:32:58,362 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-09-20 20:32:58,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-09-20 20:32:58,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:32:58,369 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-09-20 20:32:58,372 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-09-20 20:32:58,375 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-09-20 20:32:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-09-20 20:32:58,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:32:58,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:32:58,376 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] [2022-09-20 20:32:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:32:58,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:32:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:32:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1196194587, now seen corresponding path program 1 times [2022-09-20 20:32:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:32:58,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142073092] [2022-09-20 20:32:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:32:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:32:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:32:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:32:58,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:32:58,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142073092] [2022-09-20 20:32:58,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142073092] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:32:58,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:32:58,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:32:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222981324] [2022-09-20 20:32:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:32:58,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:32:58,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:32:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:32:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:32:58,694 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 20:32:58,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:32:58,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:32:58,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 20:32:58,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:03,495 INFO L130 PetriNetUnfolder]: 14819/32121 cut-off events. [2022-09-20 20:33:03,495 INFO L131 PetriNetUnfolder]: For 1153/1153 co-relation queries the response was YES. [2022-09-20 20:33:03,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53787 conditions, 32121 events. 14819/32121 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 337078 event pairs, 1155 based on Foata normal form. 0/31513 useless extension candidates. Maximal degree in co-relation 53727. Up to 7247 conditions per place. [2022-09-20 20:33:03,724 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 48 selfloop transitions, 12 changer transitions 128/275 dead transitions. [2022-09-20 20:33:03,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 944 flow [2022-09-20 20:33:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:33:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:33:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1530 transitions. [2022-09-20 20:33:03,729 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8590679393599102 [2022-09-20 20:33:03,729 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1530 transitions. [2022-09-20 20:33:03,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1530 transitions. [2022-09-20 20:33:03,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:03,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1530 transitions. [2022-09-20 20:33:03,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.6923076923077) internal successors, (1530), 13 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:03,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:03,739 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:03,740 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1530 transitions. [2022-09-20 20:33:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 944 flow [2022-09-20 20:33:03,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:33:03,745 INFO L231 Difference]: Finished difference. Result has 162 places, 124 transitions, 370 flow [2022-09-20 20:33:03,746 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=124} [2022-09-20 20:33:03,747 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-09-20 20:33:03,747 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 124 transitions, 370 flow [2022-09-20 20:33:03,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:03,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:03,748 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] [2022-09-20 20:33:03,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:33:03,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1504018406, now seen corresponding path program 1 times [2022-09-20 20:33:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:03,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575283180] [2022-09-20 20:33:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:03,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:03,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575283180] [2022-09-20 20:33:03,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575283180] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:03,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:03,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:33:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821812032] [2022-09-20 20:33:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:33:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:33:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:33:03,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 20:33:03,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 124 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:03,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:03,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 20:33:03,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:06,658 INFO L130 PetriNetUnfolder]: 10158/16559 cut-off events. [2022-09-20 20:33:06,658 INFO L131 PetriNetUnfolder]: For 29818/29834 co-relation queries the response was YES. [2022-09-20 20:33:06,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51627 conditions, 16559 events. 10158/16559 cut-off events. For 29818/29834 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 120951 event pairs, 1334 based on Foata normal form. 368/16691 useless extension candidates. Maximal degree in co-relation 51551. Up to 4924 conditions per place. [2022-09-20 20:33:06,792 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 54 selfloop transitions, 10 changer transitions 118/269 dead transitions. [2022-09-20 20:33:06,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 269 transitions, 1474 flow [2022-09-20 20:33:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:33:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:33:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1512 transitions. [2022-09-20 20:33:06,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8489612577203818 [2022-09-20 20:33:06,797 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1512 transitions. [2022-09-20 20:33:06,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1512 transitions. [2022-09-20 20:33:06,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:06,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1512 transitions. [2022-09-20 20:33:06,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:06,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:06,805 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:06,805 INFO L175 Difference]: Start difference. First operand has 162 places, 124 transitions, 370 flow. Second operand 13 states and 1512 transitions. [2022-09-20 20:33:06,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 269 transitions, 1474 flow [2022-09-20 20:33:06,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 269 transitions, 1450 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-20 20:33:06,905 INFO L231 Difference]: Finished difference. Result has 160 places, 130 transitions, 496 flow [2022-09-20 20:33:06,905 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2022-09-20 20:33:06,907 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 16 predicate places. [2022-09-20 20:33:06,907 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 496 flow [2022-09-20 20:33:06,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:06,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:06,908 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] [2022-09-20 20:33:06,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:33:06,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:06,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:06,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1207635186, now seen corresponding path program 1 times [2022-09-20 20:33:06,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:06,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576882188] [2022-09-20 20:33:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:07,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576882188] [2022-09-20 20:33:07,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576882188] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:07,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:07,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:33:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189642450] [2022-09-20 20:33:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:33:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:33:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:33:07,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 20:33:07,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 496 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:07,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:07,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 20:33:07,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:09,437 INFO L130 PetriNetUnfolder]: 8555/14903 cut-off events. [2022-09-20 20:33:09,438 INFO L131 PetriNetUnfolder]: For 51175/51592 co-relation queries the response was YES. [2022-09-20 20:33:09,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51571 conditions, 14903 events. 8555/14903 cut-off events. For 51175/51592 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 115168 event pairs, 1394 based on Foata normal form. 290/14710 useless extension candidates. Maximal degree in co-relation 51484. Up to 4791 conditions per place. [2022-09-20 20:33:09,570 INFO L137 encePairwiseOnDemand]: 122/137 looper letters, 54 selfloop transitions, 24 changer transitions 106/271 dead transitions. [2022-09-20 20:33:09,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 271 transitions, 1796 flow [2022-09-20 20:33:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:33:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:33:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1510 transitions. [2022-09-20 20:33:09,582 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478382930937676 [2022-09-20 20:33:09,582 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1510 transitions. [2022-09-20 20:33:09,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1510 transitions. [2022-09-20 20:33:09,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:09,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1510 transitions. [2022-09-20 20:33:09,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.15384615384616) internal successors, (1510), 13 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:09,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:09,591 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:09,591 INFO L175 Difference]: Start difference. First operand has 160 places, 130 transitions, 496 flow. Second operand 13 states and 1510 transitions. [2022-09-20 20:33:09,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 271 transitions, 1796 flow [2022-09-20 20:33:09,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 271 transitions, 1719 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-09-20 20:33:09,860 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 782 flow [2022-09-20 20:33:09,861 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=782, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2022-09-20 20:33:09,862 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 27 predicate places. [2022-09-20 20:33:09,863 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 782 flow [2022-09-20 20:33:09,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:09,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:09,871 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] [2022-09-20 20:33:09,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:33:09,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash -810611399, now seen corresponding path program 1 times [2022-09-20 20:33:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:09,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733722379] [2022-09-20 20:33:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:10,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:10,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733722379] [2022-09-20 20:33:10,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733722379] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:10,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:10,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:33:10,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866036987] [2022-09-20 20:33:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:33:10,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:10,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:33:10,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:33:10,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 20:33:10,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 782 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:10,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:10,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 20:33:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:12,643 INFO L130 PetriNetUnfolder]: 9343/16657 cut-off events. [2022-09-20 20:33:12,643 INFO L131 PetriNetUnfolder]: For 77032/77123 co-relation queries the response was YES. [2022-09-20 20:33:12,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61134 conditions, 16657 events. 9343/16657 cut-off events. For 77032/77123 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 133663 event pairs, 2038 based on Foata normal form. 271/16448 useless extension candidates. Maximal degree in co-relation 61031. Up to 4348 conditions per place. [2022-09-20 20:33:12,817 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 56 selfloop transitions, 33 changer transitions 92/268 dead transitions. [2022-09-20 20:33:12,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 268 transitions, 2057 flow [2022-09-20 20:33:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:33:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:33:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1498 transitions. [2022-09-20 20:33:12,821 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.841100505334082 [2022-09-20 20:33:12,822 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1498 transitions. [2022-09-20 20:33:12,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1498 transitions. [2022-09-20 20:33:12,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:12,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1498 transitions. [2022-09-20 20:33:12,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.23076923076923) internal successors, (1498), 13 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:12,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:12,831 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:12,831 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 782 flow. Second operand 13 states and 1498 transitions. [2022-09-20 20:33:12,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 268 transitions, 2057 flow [2022-09-20 20:33:13,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 268 transitions, 1929 flow, removed 64 selfloop flow, removed 6 redundant places. [2022-09-20 20:33:13,466 INFO L231 Difference]: Finished difference. Result has 180 places, 150 transitions, 980 flow [2022-09-20 20:33:13,466 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=980, PETRI_PLACES=180, PETRI_TRANSITIONS=150} [2022-09-20 20:33:13,467 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 36 predicate places. [2022-09-20 20:33:13,467 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 150 transitions, 980 flow [2022-09-20 20:33:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:13,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:13,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:33:13,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:33:13,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1616485967, now seen corresponding path program 1 times [2022-09-20 20:33:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:13,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316551215] [2022-09-20 20:33:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:13,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:13,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316551215] [2022-09-20 20:33:13,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316551215] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:13,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:13,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:33:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627469272] [2022-09-20 20:33:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:33:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:33:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:33:13,596 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 20:33:13,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 150 transitions, 980 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:13,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:13,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 20:33:13,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:21,263 INFO L130 PetriNetUnfolder]: 29329/51397 cut-off events. [2022-09-20 20:33:21,263 INFO L131 PetriNetUnfolder]: For 132844/153971 co-relation queries the response was YES. [2022-09-20 20:33:21,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128632 conditions, 51397 events. 29329/51397 cut-off events. For 132844/153971 co-relation queries the response was YES. Maximal size of possible extension queue 2902. Compared 491843 event pairs, 3162 based on Foata normal form. 448/49398 useless extension candidates. Maximal degree in co-relation 128521. Up to 16642 conditions per place. [2022-09-20 20:33:21,919 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 109 selfloop transitions, 20 changer transitions 0/253 dead transitions. [2022-09-20 20:33:21,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 253 transitions, 1898 flow [2022-09-20 20:33:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:33:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:33:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-09-20 20:33:21,923 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-09-20 20:33:21,923 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-09-20 20:33:21,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-09-20 20:33:21,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:21,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-09-20 20:33:21,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:21,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:21,929 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:21,929 INFO L175 Difference]: Start difference. First operand has 180 places, 150 transitions, 980 flow. Second operand 10 states and 1207 transitions. [2022-09-20 20:33:21,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 253 transitions, 1898 flow [2022-09-20 20:33:22,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 253 transitions, 1816 flow, removed 41 selfloop flow, removed 12 redundant places. [2022-09-20 20:33:22,083 INFO L231 Difference]: Finished difference. Result has 174 places, 168 transitions, 1083 flow [2022-09-20 20:33:22,083 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2022-09-20 20:33:22,086 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 30 predicate places. [2022-09-20 20:33:22,086 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 1083 flow [2022-09-20 20:33:22,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:22,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:22,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:33:22,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:33:22,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1712560041, now seen corresponding path program 1 times [2022-09-20 20:33:22,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:22,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339290339] [2022-09-20 20:33:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:22,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339290339] [2022-09-20 20:33:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339290339] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:22,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:22,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:33:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338052701] [2022-09-20 20:33:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:22,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:33:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:22,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:33:22,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:33:22,238 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 20:33:22,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 1083 flow. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:22,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:22,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 20:33:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:26,817 INFO L130 PetriNetUnfolder]: 11647/29807 cut-off events. [2022-09-20 20:33:26,817 INFO L131 PetriNetUnfolder]: For 106284/110974 co-relation queries the response was YES. [2022-09-20 20:33:27,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96292 conditions, 29807 events. 11647/29807 cut-off events. For 106284/110974 co-relation queries the response was YES. Maximal size of possible extension queue 1963. Compared 365116 event pairs, 3359 based on Foata normal form. 610/28274 useless extension candidates. Maximal degree in co-relation 96180. Up to 5458 conditions per place. [2022-09-20 20:33:27,421 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 130 selfloop transitions, 48 changer transitions 0/283 dead transitions. [2022-09-20 20:33:27,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 283 transitions, 2393 flow [2022-09-20 20:33:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:33:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:33:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1492 transitions. [2022-09-20 20:33:27,428 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8377316114542392 [2022-09-20 20:33:27,429 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1492 transitions. [2022-09-20 20:33:27,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1492 transitions. [2022-09-20 20:33:27,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:27,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1492 transitions. [2022-09-20 20:33:27,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.76923076923077) internal successors, (1492), 13 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:27,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:27,437 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:27,437 INFO L175 Difference]: Start difference. First operand has 174 places, 168 transitions, 1083 flow. Second operand 13 states and 1492 transitions. [2022-09-20 20:33:27,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 283 transitions, 2393 flow [2022-09-20 20:33:27,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 283 transitions, 2336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:33:27,808 INFO L231 Difference]: Finished difference. Result has 196 places, 194 transitions, 1678 flow [2022-09-20 20:33:27,809 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1678, PETRI_PLACES=196, PETRI_TRANSITIONS=194} [2022-09-20 20:33:27,809 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-09-20 20:33:27,809 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 194 transitions, 1678 flow [2022-09-20 20:33:27,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:27,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:27,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:33:27,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:33:27,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash 104766417, now seen corresponding path program 1 times [2022-09-20 20:33:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:27,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996794289] [2022-09-20 20:33:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:27,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996794289] [2022-09-20 20:33:27,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996794289] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:27,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:27,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:33:27,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291256455] [2022-09-20 20:33:27,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:27,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:33:27,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:33:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:33:27,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 20:33:27,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 194 transitions, 1678 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:27,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:27,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 20:33:27,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:39,670 INFO L130 PetriNetUnfolder]: 39678/71816 cut-off events. [2022-09-20 20:33:39,670 INFO L131 PetriNetUnfolder]: For 278344/304259 co-relation queries the response was YES. [2022-09-20 20:33:40,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240809 conditions, 71816 events. 39678/71816 cut-off events. For 278344/304259 co-relation queries the response was YES. Maximal size of possible extension queue 4300. Compared 751582 event pairs, 2036 based on Foata normal form. 1856/71988 useless extension candidates. Maximal degree in co-relation 240686. Up to 15515 conditions per place. [2022-09-20 20:33:40,666 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 138 selfloop transitions, 38 changer transitions 17/336 dead transitions. [2022-09-20 20:33:40,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 336 transitions, 3343 flow [2022-09-20 20:33:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:33:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:33:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2022-09-20 20:33:40,671 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8837731611454239 [2022-09-20 20:33:40,672 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2022-09-20 20:33:40,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2022-09-20 20:33:40,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:40,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2022-09-20 20:33:40,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.07692307692308) internal successors, (1574), 13 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:40,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:40,680 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:40,680 INFO L175 Difference]: Start difference. First operand has 196 places, 194 transitions, 1678 flow. Second operand 13 states and 1574 transitions. [2022-09-20 20:33:40,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 336 transitions, 3343 flow [2022-09-20 20:33:44,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 336 transitions, 3247 flow, removed 48 selfloop flow, removed 0 redundant places. [2022-09-20 20:33:44,521 INFO L231 Difference]: Finished difference. Result has 214 places, 207 transitions, 1744 flow [2022-09-20 20:33:44,522 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1744, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2022-09-20 20:33:44,522 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 70 predicate places. [2022-09-20 20:33:44,523 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 1744 flow [2022-09-20 20:33:44,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:44,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:33:44,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:33:44,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:33:44,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:33:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:33:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1551472466, now seen corresponding path program 1 times [2022-09-20 20:33:44,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:33:44,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46108510] [2022-09-20 20:33:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:33:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:33:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:33:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:33:44,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:33:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46108510] [2022-09-20 20:33:44,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46108510] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:33:44,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:33:44,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:33:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091695294] [2022-09-20 20:33:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:33:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:33:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:33:44,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:33:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:33:44,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 20:33:44,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 1744 flow. Second operand has 7 states, 7 states have (on average 112.57142857142857) internal successors, (788), 7 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:44,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:33:44,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 20:33:44,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:33:50,457 INFO L130 PetriNetUnfolder]: 11782/39196 cut-off events. [2022-09-20 20:33:50,457 INFO L131 PetriNetUnfolder]: For 164711/186861 co-relation queries the response was YES. [2022-09-20 20:33:51,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142322 conditions, 39196 events. 11782/39196 cut-off events. For 164711/186861 co-relation queries the response was YES. Maximal size of possible extension queue 4524. Compared 599483 event pairs, 1329 based on Foata normal form. 854/37479 useless extension candidates. Maximal degree in co-relation 142189. Up to 10145 conditions per place. [2022-09-20 20:33:51,136 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 75 selfloop transitions, 15 changer transitions 18/271 dead transitions. [2022-09-20 20:33:51,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 271 transitions, 2484 flow [2022-09-20 20:33:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:33:51,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:33:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 833 transitions. [2022-09-20 20:33:51,139 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8686131386861314 [2022-09-20 20:33:51,139 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 833 transitions. [2022-09-20 20:33:51,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 833 transitions. [2022-09-20 20:33:51,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:33:51,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 833 transitions. [2022-09-20 20:33:51,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:51,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:51,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:33:51,144 INFO L175 Difference]: Start difference. First operand has 214 places, 207 transitions, 1744 flow. Second operand 7 states and 833 transitions. [2022-09-20 20:33:51,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 271 transitions, 2484 flow [2022-09-20 20:34:02,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 271 transitions, 2383 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-09-20 20:34:02,892 INFO L231 Difference]: Finished difference. Result has 218 places, 214 transitions, 1749 flow [2022-09-20 20:34:02,893 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1749, PETRI_PLACES=218, PETRI_TRANSITIONS=214} [2022-09-20 20:34:02,893 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 74 predicate places. [2022-09-20 20:34:02,893 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 214 transitions, 1749 flow [2022-09-20 20:34:02,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.57142857142857) internal successors, (788), 7 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:34:02,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:34:02,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:34:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:34:02,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:34:02,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:34:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2091559724, now seen corresponding path program 2 times [2022-09-20 20:34:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:34:02,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667088924] [2022-09-20 20:34:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:34:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:34:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:34:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:34:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:34:03,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667088924] [2022-09-20 20:34:03,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667088924] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:34:03,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:34:03,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:34:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962804430] [2022-09-20 20:34:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:34:03,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:34:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:34:03,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:34:03,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:34:03,027 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 20:34:03,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 214 transitions, 1749 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:34:03,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:34:03,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 20:34:03,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:34:21,250 INFO L130 PetriNetUnfolder]: 57199/103850 cut-off events. [2022-09-20 20:34:21,251 INFO L131 PetriNetUnfolder]: For 380053/425313 co-relation queries the response was YES. [2022-09-20 20:34:22,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365558 conditions, 103850 events. 57199/103850 cut-off events. For 380053/425313 co-relation queries the response was YES. Maximal size of possible extension queue 6546. Compared 1157245 event pairs, 2623 based on Foata normal form. 1653/102998 useless extension candidates. Maximal degree in co-relation 365425. Up to 14155 conditions per place. [2022-09-20 20:34:23,053 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 123 selfloop transitions, 58 changer transitions 69/377 dead transitions. [2022-09-20 20:34:23,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 377 transitions, 3606 flow [2022-09-20 20:34:23,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:34:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:34:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1940 transitions. [2022-09-20 20:34:23,058 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.885036496350365 [2022-09-20 20:34:23,058 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1940 transitions. [2022-09-20 20:34:23,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1940 transitions. [2022-09-20 20:34:23,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:34:23,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1940 transitions. [2022-09-20 20:34:23,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.25) internal successors, (1940), 16 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:34:23,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:34:23,067 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 137.0) internal successors, (2329), 17 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:34:23,067 INFO L175 Difference]: Start difference. First operand has 218 places, 214 transitions, 1749 flow. Second operand 16 states and 1940 transitions. [2022-09-20 20:34:23,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 377 transitions, 3606 flow [2022-09-20 20:35:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 377 transitions, 3512 flow, removed 23 selfloop flow, removed 3 redundant places. [2022-09-20 20:35:04,935 INFO L231 Difference]: Finished difference. Result has 234 places, 217 transitions, 1854 flow [2022-09-20 20:35:04,935 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1854, PETRI_PLACES=234, PETRI_TRANSITIONS=217} [2022-09-20 20:35:04,936 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 90 predicate places. [2022-09-20 20:35:04,936 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 217 transitions, 1854 flow [2022-09-20 20:35:04,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:35:04,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:35:04,936 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] [2022-09-20 20:35:04,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:35:04,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:35:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:35:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash -37783987, now seen corresponding path program 1 times [2022-09-20 20:35:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:35:04,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912967217] [2022-09-20 20:35:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:35:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:35:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:35:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:35:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:35:05,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912967217] [2022-09-20 20:35:05,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912967217] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:35:05,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:35:05,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 20:35:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878334914] [2022-09-20 20:35:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:35:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 20:35:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:35:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 20:35:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-20 20:35:05,077 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 20:35:05,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 217 transitions, 1854 flow. Second operand has 9 states, 9 states have (on average 112.11111111111111) internal successors, (1009), 9 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:35:05,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:35:05,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 20:35:05,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:35:22,676 INFO L130 PetriNetUnfolder]: 56235/102210 cut-off events. [2022-09-20 20:35:22,676 INFO L131 PetriNetUnfolder]: For 462892/509186 co-relation queries the response was YES. [2022-09-20 20:35:24,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395734 conditions, 102210 events. 56235/102210 cut-off events. For 462892/509186 co-relation queries the response was YES. Maximal size of possible extension queue 6540. Compared 1145459 event pairs, 2560 based on Foata normal form. 1095/100797 useless extension candidates. Maximal degree in co-relation 395672. Up to 13418 conditions per place. [2022-09-20 20:35:24,322 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 85 selfloop transitions, 49 changer transitions 90/351 dead transitions. [2022-09-20 20:35:24,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 351 transitions, 3383 flow [2022-09-20 20:35:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:35:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:35:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2255 transitions. [2022-09-20 20:35:24,325 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8663081060315021 [2022-09-20 20:35:24,325 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2255 transitions. [2022-09-20 20:35:24,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2255 transitions. [2022-09-20 20:35:24,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:35:24,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2255 transitions. [2022-09-20 20:35:24,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.6842105263158) internal successors, (2255), 19 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:35:24,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:35:24,336 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 137.0) internal successors, (2740), 20 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:35:24,336 INFO L175 Difference]: Start difference. First operand has 234 places, 217 transitions, 1854 flow. Second operand 19 states and 2255 transitions. [2022-09-20 20:35:24,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 351 transitions, 3383 flow [2022-09-20 20:37:43,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 351 transitions, 2862 flow, removed 215 selfloop flow, removed 30 redundant places. [2022-09-20 20:37:43,117 INFO L231 Difference]: Finished difference. Result has 216 places, 199 transitions, 1449 flow [2022-09-20 20:37:43,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1449, PETRI_PLACES=216, PETRI_TRANSITIONS=199} [2022-09-20 20:37:43,118 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 72 predicate places. [2022-09-20 20:37:43,118 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 199 transitions, 1449 flow [2022-09-20 20:37:43,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.11111111111111) internal successors, (1009), 9 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:37:43,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:37:43,118 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] [2022-09-20 20:37:43,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 20:37:43,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:37:43,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:37:43,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2106031330, now seen corresponding path program 1 times [2022-09-20 20:37:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:37:43,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695288848] [2022-09-20 20:37:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:37:43,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:37:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:37:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:37:43,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:37:43,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695288848] [2022-09-20 20:37:43,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695288848] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:37:43,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:37:43,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:37:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011525771] [2022-09-20 20:37:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:37:43,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:37:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:37:43,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:37:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:37:43,298 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 20:37:43,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 199 transitions, 1449 flow. Second operand has 8 states, 8 states have (on average 112.75) internal successors, (902), 8 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:37:43,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:37:43,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 20:37:43,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:37:48,378 INFO L130 PetriNetUnfolder]: 11240/44409 cut-off events. [2022-09-20 20:37:48,379 INFO L131 PetriNetUnfolder]: For 92570/96674 co-relation queries the response was YES. [2022-09-20 20:37:48,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135493 conditions, 44409 events. 11240/44409 cut-off events. For 92570/96674 co-relation queries the response was YES. Maximal size of possible extension queue 5894. Compared 765073 event pairs, 303 based on Foata normal form. 63/41860 useless extension candidates. Maximal degree in co-relation 135369. Up to 4956 conditions per place. [2022-09-20 20:37:49,188 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 31 selfloop transitions, 17 changer transitions 6/229 dead transitions. [2022-09-20 20:37:49,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 229 transitions, 1696 flow [2022-09-20 20:37:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:37:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:37:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2022-09-20 20:37:49,190 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8434712084347121 [2022-09-20 20:37:49,190 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2022-09-20 20:37:49,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2022-09-20 20:37:49,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:37:49,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2022-09-20 20:37:49,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:37:49,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:37:49,194 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:37:49,194 INFO L175 Difference]: Start difference. First operand has 216 places, 199 transitions, 1449 flow. Second operand 9 states and 1040 transitions. [2022-09-20 20:37:49,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 229 transitions, 1696 flow [2022-09-20 20:38:00,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 229 transitions, 1525 flow, removed 34 selfloop flow, removed 21 redundant places. [2022-09-20 20:38:00,042 INFO L231 Difference]: Finished difference. Result has 205 places, 217 transitions, 1453 flow [2022-09-20 20:38:00,042 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=205, PETRI_TRANSITIONS=217} [2022-09-20 20:38:00,043 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 61 predicate places. [2022-09-20 20:38:00,043 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 217 transitions, 1453 flow [2022-09-20 20:38:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.75) internal successors, (902), 8 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:38:00,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:38:00,044 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] [2022-09-20 20:38:00,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 20:38:00,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:38:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:38:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1334225054, now seen corresponding path program 2 times [2022-09-20 20:38:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:38:00,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92246439] [2022-09-20 20:38:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:38:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:38:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:38:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:38:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:38:00,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92246439] [2022-09-20 20:38:00,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92246439] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:38:00,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:38:00,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:38:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93724684] [2022-09-20 20:38:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:38:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:38:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:38:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:38:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:38:00,260 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 137 [2022-09-20 20:38:00,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 217 transitions, 1453 flow. Second operand has 11 states, 11 states have (on average 108.36363636363636) internal successors, (1192), 11 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:38:00,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:38:00,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 137 [2022-09-20 20:38:00,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand