/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:17:13,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:17:13,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:17:13,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:17:13,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:17:13,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:17:13,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:17:13,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:17:13,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:17:13,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:17:13,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:17:13,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:17:13,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:17:13,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:17:13,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:17:13,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:17:13,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:17:13,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:17:13,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:17:13,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:17:13,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:17:13,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:17:13,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:17:13,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:17:13,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:17:13,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:17:13,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:17:13,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:17:13,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:17:13,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:17:13,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:17:13,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:17:13,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:17:13,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:17:13,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:17:13,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:17:13,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:17:13,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:17:13,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:17:13,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:17:13,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:17:13,275 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 23:17:13,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:17:13,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:17:13,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:17:13,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:17:13,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:17:13,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:17:13,308 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:17:13,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:17:13,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:17:13,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:17:13,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:17:13,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:17:13,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:17:13,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:17:13,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:17:13,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:17:13,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:17:13,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:17:13,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:17:13,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:17:13,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:17:13,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:17:13,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:17:13,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:17:13,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:17:13,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:17:13,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:17:13,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:17:13,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:17:13,312 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:17:13,312 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:17:13,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:17:13,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:17:13,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:17:13,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:17:13,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:17:13,578 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:17:13,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-09-20 23:17:13,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff64f728/f199d4b8274d4e08b3649b3e5efbfc5f/FLAG62620a566 [2022-09-20 23:17:14,024 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:17:14,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-09-20 23:17:14,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff64f728/f199d4b8274d4e08b3649b3e5efbfc5f/FLAG62620a566 [2022-09-20 23:17:14,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff64f728/f199d4b8274d4e08b3649b3e5efbfc5f [2022-09-20 23:17:14,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:17:14,420 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:17:14,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:17:14,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:17:14,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:17:14,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc337fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14, skipping insertion in model container [2022-09-20 23:17:14,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:17:14,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:17:14,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-09-20 23:17:14,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:17:14,667 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:17:14,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-09-20 23:17:14,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:17:14,709 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:17:14,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14 WrapperNode [2022-09-20 23:17:14,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:17:14,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:17:14,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:17:14,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:17:14,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,754 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 350 [2022-09-20 23:17:14,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:17:14,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:17:14,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:17:14,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:17:14,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:17:14,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:17:14,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:17:14,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:17:14,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (1/1) ... [2022-09-20 23:17:14,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:17:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:14,849 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 23:17:14,855 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 23:17:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:17:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:17:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:17:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:17:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:17:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:17:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:17:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:17:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:17:14,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:17:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 23:17:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 23:17:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:17:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:17:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:17:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:17:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:17:14,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:17:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:17:14,880 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 23:17:15,017 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:17:15,019 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:17:15,505 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:17:15,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:17:15,734 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-09-20 23:17:15,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:17:15 BoogieIcfgContainer [2022-09-20 23:17:15,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:17:15,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:17:15,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:17:15,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:17:15,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:17:14" (1/3) ... [2022-09-20 23:17:15,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd77c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:17:15, skipping insertion in model container [2022-09-20 23:17:15,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:14" (2/3) ... [2022-09-20 23:17:15,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd77c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:17:15, skipping insertion in model container [2022-09-20 23:17:15,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:17:15" (3/3) ... [2022-09-20 23:17:15,746 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-09-20 23:17:15,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:17:15,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:17:15,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:17:15,844 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 23:17:15,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 267 transitions, 566 flow [2022-09-20 23:17:16,004 INFO L130 PetriNetUnfolder]: 22/263 cut-off events. [2022-09-20 23:17:16,005 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:17:16,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 263 events. 22/263 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 136 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2022-09-20 23:17:16,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 267 transitions, 566 flow [2022-09-20 23:17:16,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 250 transitions, 524 flow [2022-09-20 23:17:16,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:17:16,031 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;@32e4bd37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:17:16,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 23:17:16,089 INFO L130 PetriNetUnfolder]: 22/249 cut-off events. [2022-09-20 23:17:16,089 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:17:16,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:16,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:16,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1673952352, now seen corresponding path program 1 times [2022-09-20 23:17:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80532824] [2022-09-20 23:17:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:16,394 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 23:17:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:16,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80532824] [2022-09-20 23:17:16,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80532824] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:16,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:16,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:17:16,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127289946] [2022-09-20 23:17:16,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:16,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:17:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:17:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:17:16,447 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 267 [2022-09-20 23:17:16,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 250 transitions, 524 flow. Second operand has 2 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 23:17:16,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:16,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 267 [2022-09-20 23:17:16,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:16,702 INFO L130 PetriNetUnfolder]: 227/786 cut-off events. [2022-09-20 23:17:16,702 INFO L131 PetriNetUnfolder]: For 146/147 co-relation queries the response was YES. [2022-09-20 23:17:16,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 786 events. 227/786 cut-off events. For 146/147 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3399 event pairs, 121 based on Foata normal form. 200/898 useless extension candidates. Maximal degree in co-relation 906. Up to 306 conditions per place. [2022-09-20 23:17:16,715 INFO L137 encePairwiseOnDemand]: 252/267 looper letters, 14 selfloop transitions, 0 changer transitions 8/235 dead transitions. [2022-09-20 23:17:16,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 235 transitions, 522 flow [2022-09-20 23:17:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:17:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:17:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 503 transitions. [2022-09-20 23:17:16,736 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9419475655430711 [2022-09-20 23:17:16,737 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 503 transitions. [2022-09-20 23:17:16,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 503 transitions. [2022-09-20 23:17:16,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:16,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 503 transitions. [2022-09-20 23:17:16,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 251.5) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:16,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 23:17:16,757 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 23:17:16,759 INFO L175 Difference]: Start difference. First operand has 241 places, 250 transitions, 524 flow. Second operand 2 states and 503 transitions. [2022-09-20 23:17:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 235 transitions, 522 flow [2022-09-20 23:17:16,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 235 transitions, 506 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 23:17:16,773 INFO L231 Difference]: Finished difference. Result has 234 places, 227 transitions, 462 flow [2022-09-20 23:17:16,775 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=462, PETRI_PLACES=234, PETRI_TRANSITIONS=227} [2022-09-20 23:17:16,778 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, -7 predicate places. [2022-09-20 23:17:16,779 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 227 transitions, 462 flow [2022-09-20 23:17:16,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 23:17:16,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:16,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:16,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:17:16,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1899937537, now seen corresponding path program 1 times [2022-09-20 23:17:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:16,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984799606] [2022-09-20 23:17:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:16,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:17,251 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 23:17:17,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:17,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984799606] [2022-09-20 23:17:17,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984799606] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:17,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:17,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:17:17,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459432446] [2022-09-20 23:17:17,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:17,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:17:17,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:17:17,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:17:17,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 267 [2022-09-20 23:17:17,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 227 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 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 23:17:17,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:17,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 267 [2022-09-20 23:17:17,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:17,533 INFO L130 PetriNetUnfolder]: 252/862 cut-off events. [2022-09-20 23:17:17,533 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-09-20 23:17:17,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 862 events. 252/862 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3931 event pairs, 32 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 1263. Up to 249 conditions per place. [2022-09-20 23:17:17,543 INFO L137 encePairwiseOnDemand]: 261/267 looper letters, 54 selfloop transitions, 3 changer transitions 4/241 dead transitions. [2022-09-20 23:17:17,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 241 transitions, 617 flow [2022-09-20 23:17:17,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:17:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:17:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1042 transitions. [2022-09-20 23:17:17,547 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7805243445692884 [2022-09-20 23:17:17,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1042 transitions. [2022-09-20 23:17:17,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1042 transitions. [2022-09-20 23:17:17,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:17,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1042 transitions. [2022-09-20 23:17:17,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.4) internal successors, (1042), 5 states have internal predecessors, (1042), 0 states have call successors, (0), 0 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 23:17:17,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 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 23:17:17,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 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 23:17:17,555 INFO L175 Difference]: Start difference. First operand has 234 places, 227 transitions, 462 flow. Second operand 5 states and 1042 transitions. [2022-09-20 23:17:17,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 241 transitions, 617 flow [2022-09-20 23:17:17,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 241 transitions, 617 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:17:17,564 INFO L231 Difference]: Finished difference. Result has 233 places, 229 transitions, 485 flow [2022-09-20 23:17:17,565 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=233, PETRI_TRANSITIONS=229} [2022-09-20 23:17:17,565 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, -8 predicate places. [2022-09-20 23:17:17,565 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 229 transitions, 485 flow [2022-09-20 23:17:17,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 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 23:17:17,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:17,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:17:17,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1647926794, now seen corresponding path program 1 times [2022-09-20 23:17:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101891240] [2022-09-20 23:17:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:17,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:17:17,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101891240] [2022-09-20 23:17:17,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101891240] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:17,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:17,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 23:17:17,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044772882] [2022-09-20 23:17:17,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:17,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 23:17:17,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 23:17:17,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 23:17:17,734 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 267 [2022-09-20 23:17:17,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 229 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 23:17:17,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:17,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 267 [2022-09-20 23:17:17,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:17,994 INFO L130 PetriNetUnfolder]: 398/1217 cut-off events. [2022-09-20 23:17:17,994 INFO L131 PetriNetUnfolder]: For 214/214 co-relation queries the response was YES. [2022-09-20 23:17:17,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 1217 events. 398/1217 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6488 event pairs, 190 based on Foata normal form. 17/1064 useless extension candidates. Maximal degree in co-relation 2010. Up to 432 conditions per place. [2022-09-20 23:17:18,004 INFO L137 encePairwiseOnDemand]: 264/267 looper letters, 33 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-09-20 23:17:18,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 242 transitions, 593 flow [2022-09-20 23:17:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 23:17:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 23:17:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2022-09-20 23:17:18,007 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9063670411985019 [2022-09-20 23:17:18,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 726 transitions. [2022-09-20 23:17:18,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 726 transitions. [2022-09-20 23:17:18,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:18,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 726 transitions. [2022-09-20 23:17:18,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 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 23:17:18,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 23:17:18,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 23:17:18,012 INFO L175 Difference]: Start difference. First operand has 233 places, 229 transitions, 485 flow. Second operand 3 states and 726 transitions. [2022-09-20 23:17:18,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 242 transitions, 593 flow [2022-09-20 23:17:18,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 242 transitions, 585 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:18,019 INFO L231 Difference]: Finished difference. Result has 231 places, 230 transitions, 492 flow [2022-09-20 23:17:18,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=231, PETRI_TRANSITIONS=230} [2022-09-20 23:17:18,021 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, -10 predicate places. [2022-09-20 23:17:18,021 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 230 transitions, 492 flow [2022-09-20 23:17:18,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 23:17:18,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:18,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:18,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:17:18,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash -948381044, now seen corresponding path program 1 times [2022-09-20 23:17:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:18,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637464870] [2022-09-20 23:17:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:18,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:17:18,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:18,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637464870] [2022-09-20 23:17:18,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637464870] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:18,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:18,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 23:17:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526819739] [2022-09-20 23:17:18,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 23:17:18,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 23:17:18,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 23:17:18,121 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 267 [2022-09-20 23:17:18,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 230 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 23:17:18,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:18,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 267 [2022-09-20 23:17:18,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:18,381 INFO L130 PetriNetUnfolder]: 300/1082 cut-off events. [2022-09-20 23:17:18,382 INFO L131 PetriNetUnfolder]: For 359/360 co-relation queries the response was YES. [2022-09-20 23:17:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1813 conditions, 1082 events. 300/1082 cut-off events. For 359/360 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5609 event pairs, 106 based on Foata normal form. 14/946 useless extension candidates. Maximal degree in co-relation 1807. Up to 353 conditions per place. [2022-09-20 23:17:18,389 INFO L137 encePairwiseOnDemand]: 264/267 looper letters, 34 selfloop transitions, 2 changer transitions 0/243 dead transitions. [2022-09-20 23:17:18,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 243 transitions, 609 flow [2022-09-20 23:17:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 23:17:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 23:17:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2022-09-20 23:17:18,392 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9051186017478152 [2022-09-20 23:17:18,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2022-09-20 23:17:18,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2022-09-20 23:17:18,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:18,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2022-09-20 23:17:18,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 23:17:18,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 23:17:18,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 23:17:18,397 INFO L175 Difference]: Start difference. First operand has 231 places, 230 transitions, 492 flow. Second operand 3 states and 725 transitions. [2022-09-20 23:17:18,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 243 transitions, 609 flow [2022-09-20 23:17:18,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 243 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:17:18,402 INFO L231 Difference]: Finished difference. Result has 233 places, 231 transitions, 504 flow [2022-09-20 23:17:18,403 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=233, PETRI_TRANSITIONS=231} [2022-09-20 23:17:18,403 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, -8 predicate places. [2022-09-20 23:17:18,404 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 231 transitions, 504 flow [2022-09-20 23:17:18,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 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 23:17:18,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:18,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:18,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 23:17:18,405 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1440427003, now seen corresponding path program 1 times [2022-09-20 23:17:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:18,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520403128] [2022-09-20 23:17:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:18,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:17:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520403128] [2022-09-20 23:17:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520403128] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:18,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:18,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:17:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505813655] [2022-09-20 23:17:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:17:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:17:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:17:18,509 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2022-09-20 23:17:18,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 231 transitions, 504 flow. Second operand has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 23:17:18,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:18,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2022-09-20 23:17:18,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:18,799 INFO L130 PetriNetUnfolder]: 214/1036 cut-off events. [2022-09-20 23:17:18,799 INFO L131 PetriNetUnfolder]: For 388/389 co-relation queries the response was YES. [2022-09-20 23:17:18,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 1036 events. 214/1036 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4813 event pairs, 98 based on Foata normal form. 12/945 useless extension candidates. Maximal degree in co-relation 1780. Up to 301 conditions per place. [2022-09-20 23:17:18,808 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 87 selfloop transitions, 11 changer transitions 0/273 dead transitions. [2022-09-20 23:17:18,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 273 transitions, 805 flow [2022-09-20 23:17:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1884 transitions. [2022-09-20 23:17:18,812 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.784019975031211 [2022-09-20 23:17:18,812 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1884 transitions. [2022-09-20 23:17:18,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1884 transitions. [2022-09-20 23:17:18,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:18,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1884 transitions. [2022-09-20 23:17:18,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 209.33333333333334) internal successors, (1884), 9 states have internal predecessors, (1884), 0 states have call successors, (0), 0 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 23:17:18,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:18,823 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:18,823 INFO L175 Difference]: Start difference. First operand has 233 places, 231 transitions, 504 flow. Second operand 9 states and 1884 transitions. [2022-09-20 23:17:18,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 273 transitions, 805 flow [2022-09-20 23:17:18,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 273 transitions, 802 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:17:18,830 INFO L231 Difference]: Finished difference. Result has 242 places, 235 transitions, 544 flow [2022-09-20 23:17:18,830 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=544, PETRI_PLACES=242, PETRI_TRANSITIONS=235} [2022-09-20 23:17:18,833 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-09-20 23:17:18,833 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 235 transitions, 544 flow [2022-09-20 23:17:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 23:17:18,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:18,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:18,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 23:17:18,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1467707039, now seen corresponding path program 1 times [2022-09-20 23:17:18,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:18,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659380704] [2022-09-20 23:17:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:17:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:18,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659380704] [2022-09-20 23:17:18,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659380704] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:18,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:18,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:17:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28548160] [2022-09-20 23:17:18,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:18,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:17:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:17:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:17:18,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2022-09-20 23:17:18,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 235 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 23:17:18,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:18,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2022-09-20 23:17:18,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:19,276 INFO L130 PetriNetUnfolder]: 240/1368 cut-off events. [2022-09-20 23:17:19,276 INFO L131 PetriNetUnfolder]: For 512/514 co-relation queries the response was YES. [2022-09-20 23:17:19,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 1368 events. 240/1368 cut-off events. For 512/514 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 7346 event pairs, 110 based on Foata normal form. 20/1256 useless extension candidates. Maximal degree in co-relation 2269. Up to 367 conditions per place. [2022-09-20 23:17:19,285 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 78 selfloop transitions, 12 changer transitions 0/265 dead transitions. [2022-09-20 23:17:19,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 265 transitions, 806 flow [2022-09-20 23:17:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1872 transitions. [2022-09-20 23:17:19,289 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7790262172284644 [2022-09-20 23:17:19,289 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1872 transitions. [2022-09-20 23:17:19,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1872 transitions. [2022-09-20 23:17:19,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:19,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1872 transitions. [2022-09-20 23:17:19,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.0) internal successors, (1872), 9 states have internal predecessors, (1872), 0 states have call successors, (0), 0 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 23:17:19,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:19,300 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:19,300 INFO L175 Difference]: Start difference. First operand has 242 places, 235 transitions, 544 flow. Second operand 9 states and 1872 transitions. [2022-09-20 23:17:19,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 265 transitions, 806 flow [2022-09-20 23:17:19,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 265 transitions, 797 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:19,307 INFO L231 Difference]: Finished difference. Result has 249 places, 239 transitions, 579 flow [2022-09-20 23:17:19,308 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=249, PETRI_TRANSITIONS=239} [2022-09-20 23:17:19,310 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 8 predicate places. [2022-09-20 23:17:19,310 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 239 transitions, 579 flow [2022-09-20 23:17:19,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 23:17:19,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:19,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:19,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 23:17:19,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash -551205835, now seen corresponding path program 1 times [2022-09-20 23:17:19,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:19,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592754870] [2022-09-20 23:17:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:19,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:19,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592754870] [2022-09-20 23:17:19,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592754870] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:19,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:19,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:17:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412855377] [2022-09-20 23:17:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:19,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:19,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:17:19,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 267 [2022-09-20 23:17:19,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 239 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 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 23:17:19,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:19,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 267 [2022-09-20 23:17:19,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:22,026 INFO L130 PetriNetUnfolder]: 5159/12359 cut-off events. [2022-09-20 23:17:22,027 INFO L131 PetriNetUnfolder]: For 4298/4298 co-relation queries the response was YES. [2022-09-20 23:17:22,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23240 conditions, 12359 events. 5159/12359 cut-off events. For 4298/4298 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 113294 event pairs, 1634 based on Foata normal form. 0/10780 useless extension candidates. Maximal degree in co-relation 23229. Up to 2980 conditions per place. [2022-09-20 23:17:22,125 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 146 selfloop transitions, 13 changer transitions 0/318 dead transitions. [2022-09-20 23:17:22,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 318 transitions, 1148 flow [2022-09-20 23:17:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1787 transitions. [2022-09-20 23:17:22,131 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7436537661256762 [2022-09-20 23:17:22,131 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1787 transitions. [2022-09-20 23:17:22,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1787 transitions. [2022-09-20 23:17:22,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:22,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1787 transitions. [2022-09-20 23:17:22,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 198.55555555555554) internal successors, (1787), 9 states have internal predecessors, (1787), 0 states have call successors, (0), 0 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 23:17:22,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:22,139 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:22,140 INFO L175 Difference]: Start difference. First operand has 249 places, 239 transitions, 579 flow. Second operand 9 states and 1787 transitions. [2022-09-20 23:17:22,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 318 transitions, 1148 flow [2022-09-20 23:17:22,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 318 transitions, 1137 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:22,149 INFO L231 Difference]: Finished difference. Result has 258 places, 245 transitions, 638 flow [2022-09-20 23:17:22,149 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=258, PETRI_TRANSITIONS=245} [2022-09-20 23:17:22,150 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 17 predicate places. [2022-09-20 23:17:22,150 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 245 transitions, 638 flow [2022-09-20 23:17:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.11111111111111) internal successors, (1702), 9 states have internal predecessors, (1702), 0 states have call successors, (0), 0 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 23:17:22,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:22,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:22,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 23:17:22,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1321234093, now seen corresponding path program 2 times [2022-09-20 23:17:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:22,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365012296] [2022-09-20 23:17:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:22,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:22,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:22,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365012296] [2022-09-20 23:17:22,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365012296] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:22,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:22,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:17:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425139175] [2022-09-20 23:17:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:22,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:17:22,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:17:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:17:22,365 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 267 [2022-09-20 23:17:22,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 245 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 193.375) internal successors, (1547), 8 states have internal predecessors, (1547), 0 states have call successors, (0), 0 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 23:17:22,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:22,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 267 [2022-09-20 23:17:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:24,295 INFO L130 PetriNetUnfolder]: 4073/9851 cut-off events. [2022-09-20 23:17:24,295 INFO L131 PetriNetUnfolder]: For 5010/5010 co-relation queries the response was YES. [2022-09-20 23:17:24,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20255 conditions, 9851 events. 4073/9851 cut-off events. For 5010/5010 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 84918 event pairs, 1313 based on Foata normal form. 0/8936 useless extension candidates. Maximal degree in co-relation 20240. Up to 2358 conditions per place. [2022-09-20 23:17:24,368 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 127 selfloop transitions, 11 changer transitions 0/301 dead transitions. [2022-09-20 23:17:24,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 301 transitions, 1084 flow [2022-09-20 23:17:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1804 transitions. [2022-09-20 23:17:24,373 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7507282563462339 [2022-09-20 23:17:24,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1804 transitions. [2022-09-20 23:17:24,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1804 transitions. [2022-09-20 23:17:24,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:24,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1804 transitions. [2022-09-20 23:17:24,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.44444444444446) internal successors, (1804), 9 states have internal predecessors, (1804), 0 states have call successors, (0), 0 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 23:17:24,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:24,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:24,383 INFO L175 Difference]: Start difference. First operand has 258 places, 245 transitions, 638 flow. Second operand 9 states and 1804 transitions. [2022-09-20 23:17:24,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 301 transitions, 1084 flow [2022-09-20 23:17:24,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 301 transitions, 1074 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 23:17:24,396 INFO L231 Difference]: Finished difference. Result has 264 places, 244 transitions, 639 flow [2022-09-20 23:17:24,397 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2022-09-20 23:17:24,399 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 23 predicate places. [2022-09-20 23:17:24,399 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 639 flow [2022-09-20 23:17:24,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.375) internal successors, (1547), 8 states have internal predecessors, (1547), 0 states have call successors, (0), 0 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 23:17:24,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:24,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:24,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 23:17:24,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2031045169, now seen corresponding path program 1 times [2022-09-20 23:17:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:24,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297230871] [2022-09-20 23:17:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:24,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:24,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:24,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297230871] [2022-09-20 23:17:24,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297230871] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:24,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:24,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:17:24,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974951933] [2022-09-20 23:17:24,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:24,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:17:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:24,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:17:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:17:24,596 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 267 [2022-09-20 23:17:24,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 639 flow. Second operand has 8 states, 8 states have (on average 193.375) internal successors, (1547), 8 states have internal predecessors, (1547), 0 states have call successors, (0), 0 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 23:17:24,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:24,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 267 [2022-09-20 23:17:24,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:26,354 INFO L130 PetriNetUnfolder]: 4404/10680 cut-off events. [2022-09-20 23:17:26,354 INFO L131 PetriNetUnfolder]: For 6021/6021 co-relation queries the response was YES. [2022-09-20 23:17:26,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22416 conditions, 10680 events. 4404/10680 cut-off events. For 6021/6021 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 96457 event pairs, 1906 based on Foata normal form. 0/9656 useless extension candidates. Maximal degree in co-relation 22399. Up to 3027 conditions per place. [2022-09-20 23:17:26,427 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 95 selfloop transitions, 9 changer transitions 21/288 dead transitions. [2022-09-20 23:17:26,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 288 transitions, 1036 flow [2022-09-20 23:17:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1793 transitions. [2022-09-20 23:17:26,432 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7461506450270495 [2022-09-20 23:17:26,432 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1793 transitions. [2022-09-20 23:17:26,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1793 transitions. [2022-09-20 23:17:26,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:26,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1793 transitions. [2022-09-20 23:17:26,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.22222222222223) internal successors, (1793), 9 states have internal predecessors, (1793), 0 states have call successors, (0), 0 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 23:17:26,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:26,442 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 23:17:26,442 INFO L175 Difference]: Start difference. First operand has 264 places, 244 transitions, 639 flow. Second operand 9 states and 1793 transitions. [2022-09-20 23:17:26,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 288 transitions, 1036 flow [2022-09-20 23:17:26,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 288 transitions, 1020 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 23:17:26,455 INFO L231 Difference]: Finished difference. Result has 270 places, 242 transitions, 634 flow [2022-09-20 23:17:26,456 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=634, PETRI_PLACES=270, PETRI_TRANSITIONS=242} [2022-09-20 23:17:26,456 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 29 predicate places. [2022-09-20 23:17:26,457 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 242 transitions, 634 flow [2022-09-20 23:17:26,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.375) internal successors, (1547), 8 states have internal predecessors, (1547), 0 states have call successors, (0), 0 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 23:17:26,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:26,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:26,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 23:17:26,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1687222988, now seen corresponding path program 1 times [2022-09-20 23:17:26,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:26,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610645940] [2022-09-20 23:17:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:26,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:26,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610645940] [2022-09-20 23:17:26,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610645940] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:26,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:26,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:17:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677709968] [2022-09-20 23:17:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:26,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:26,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:17:26,704 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 267 [2022-09-20 23:17:26,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 242 transitions, 634 flow. Second operand has 9 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 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 23:17:26,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:26,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 267 [2022-09-20 23:17:26,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:28,380 INFO L130 PetriNetUnfolder]: 4763/9275 cut-off events. [2022-09-20 23:17:28,381 INFO L131 PetriNetUnfolder]: For 6651/6651 co-relation queries the response was YES. [2022-09-20 23:17:28,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22177 conditions, 9275 events. 4763/9275 cut-off events. For 6651/6651 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 69359 event pairs, 1036 based on Foata normal form. 0/8882 useless extension candidates. Maximal degree in co-relation 22157. Up to 3087 conditions per place. [2022-09-20 23:17:28,456 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 145 selfloop transitions, 14 changer transitions 7/325 dead transitions. [2022-09-20 23:17:28,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 325 transitions, 1301 flow [2022-09-20 23:17:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 23:17:28,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 23:17:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1970 transitions. [2022-09-20 23:17:28,461 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7378277153558053 [2022-09-20 23:17:28,461 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1970 transitions. [2022-09-20 23:17:28,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1970 transitions. [2022-09-20 23:17:28,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:28,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1970 transitions. [2022-09-20 23:17:28,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 197.0) internal successors, (1970), 10 states have internal predecessors, (1970), 0 states have call successors, (0), 0 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 23:17:28,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 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 23:17:28,471 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 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 23:17:28,471 INFO L175 Difference]: Start difference. First operand has 270 places, 242 transitions, 634 flow. Second operand 10 states and 1970 transitions. [2022-09-20 23:17:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 325 transitions, 1301 flow [2022-09-20 23:17:28,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 325 transitions, 1250 flow, removed 17 selfloop flow, removed 11 redundant places. [2022-09-20 23:17:28,489 INFO L231 Difference]: Finished difference. Result has 267 places, 248 transitions, 687 flow [2022-09-20 23:17:28,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=687, PETRI_PLACES=267, PETRI_TRANSITIONS=248} [2022-09-20 23:17:28,490 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 26 predicate places. [2022-09-20 23:17:28,491 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 248 transitions, 687 flow [2022-09-20 23:17:28,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.44444444444446) internal successors, (1705), 9 states have internal predecessors, (1705), 0 states have call successors, (0), 0 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 23:17:28,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:28,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:28,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 23:17:28,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash 353234294, now seen corresponding path program 1 times [2022-09-20 23:17:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:28,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365279658] [2022-09-20 23:17:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:28,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365279658] [2022-09-20 23:17:28,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365279658] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674487313] [2022-09-20 23:17:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:28,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:17:28,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:28,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:17:28,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 23:17:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:28,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-20 23:17:28,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:17:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:17:29,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:17:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:29,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674487313] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:29,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:17:29,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 8] total 22 [2022-09-20 23:17:29,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768528163] [2022-09-20 23:17:29,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:29,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 23:17:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 23:17:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-09-20 23:17:29,840 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 267 [2022-09-20 23:17:29,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 248 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 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 23:17:29,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:29,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 267 [2022-09-20 23:17:29,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:31,948 INFO L130 PetriNetUnfolder]: 5557/10293 cut-off events. [2022-09-20 23:17:31,948 INFO L131 PetriNetUnfolder]: For 9129/9129 co-relation queries the response was YES. [2022-09-20 23:17:31,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25323 conditions, 10293 events. 5557/10293 cut-off events. For 9129/9129 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 72193 event pairs, 840 based on Foata normal form. 0/9722 useless extension candidates. Maximal degree in co-relation 25304. Up to 1868 conditions per place. [2022-09-20 23:17:32,045 INFO L137 encePairwiseOnDemand]: 248/267 looper letters, 211 selfloop transitions, 36 changer transitions 5/409 dead transitions. [2022-09-20 23:17:32,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 409 transitions, 1898 flow [2022-09-20 23:17:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 23:17:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 23:17:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3817 transitions. [2022-09-20 23:17:32,055 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7147940074906367 [2022-09-20 23:17:32,055 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3817 transitions. [2022-09-20 23:17:32,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3817 transitions. [2022-09-20 23:17:32,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:32,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3817 transitions. [2022-09-20 23:17:32,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 190.85) internal successors, (3817), 20 states have internal predecessors, (3817), 0 states have call successors, (0), 0 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 23:17:32,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 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 23:17:32,076 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 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 23:17:32,076 INFO L175 Difference]: Start difference. First operand has 267 places, 248 transitions, 687 flow. Second operand 20 states and 3817 transitions. [2022-09-20 23:17:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 409 transitions, 1898 flow [2022-09-20 23:17:32,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 409 transitions, 1861 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-09-20 23:17:32,110 INFO L231 Difference]: Finished difference. Result has 286 places, 264 transitions, 853 flow [2022-09-20 23:17:32,111 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=853, PETRI_PLACES=286, PETRI_TRANSITIONS=264} [2022-09-20 23:17:32,111 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 45 predicate places. [2022-09-20 23:17:32,111 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 264 transitions, 853 flow [2022-09-20 23:17:32,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 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 23:17:32,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:32,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:32,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 23:17:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-20 23:17:32,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1361066837, now seen corresponding path program 1 times [2022-09-20 23:17:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:32,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521513704] [2022-09-20 23:17:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:17:32,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:32,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521513704] [2022-09-20 23:17:32,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521513704] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:32,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277736763] [2022-09-20 23:17:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:32,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:17:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:32,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:17:32,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 23:17:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:32,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-20 23:17:32,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:17:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:33,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:17:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:17:33,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277736763] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:17:33,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:17:33,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 20 [2022-09-20 23:17:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522564813] [2022-09-20 23:17:33,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:17:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-20 23:17:33,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-20 23:17:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-09-20 23:17:33,647 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 267 [2022-09-20 23:17:33,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 264 transitions, 853 flow. Second operand has 20 states, 20 states have (on average 185.5) internal successors, (3710), 20 states have internal predecessors, (3710), 0 states have call successors, (0), 0 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 23:17:33,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:33,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 267 [2022-09-20 23:17:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:40,156 INFO L130 PetriNetUnfolder]: 18286/31397 cut-off events. [2022-09-20 23:17:40,157 INFO L131 PetriNetUnfolder]: For 64139/64169 co-relation queries the response was YES. [2022-09-20 23:17:40,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91528 conditions, 31397 events. 18286/31397 cut-off events. For 64139/64169 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 263388 event pairs, 1166 based on Foata normal form. 413/29962 useless extension candidates. Maximal degree in co-relation 91503. Up to 3901 conditions per place. [2022-09-20 23:17:40,630 INFO L137 encePairwiseOnDemand]: 243/267 looper letters, 476 selfloop transitions, 225 changer transitions 0/857 dead transitions. [2022-09-20 23:17:40,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 857 transitions, 5562 flow [2022-09-20 23:17:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-20 23:17:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-20 23:17:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8274 transitions. [2022-09-20 23:17:40,647 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7042900919305414 [2022-09-20 23:17:40,648 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8274 transitions. [2022-09-20 23:17:40,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8274 transitions. [2022-09-20 23:17:40,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:40,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8274 transitions. [2022-09-20 23:17:40,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 188.04545454545453) internal successors, (8274), 44 states have internal predecessors, (8274), 0 states have call successors, (0), 0 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 23:17:40,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 267.0) internal successors, (12015), 45 states have internal predecessors, (12015), 0 states have call successors, (0), 0 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 23:17:40,697 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 267.0) internal successors, (12015), 45 states have internal predecessors, (12015), 0 states have call successors, (0), 0 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 23:17:40,697 INFO L175 Difference]: Start difference. First operand has 286 places, 264 transitions, 853 flow. Second operand 44 states and 8274 transitions. [2022-09-20 23:17:40,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 857 transitions, 5562 flow [2022-09-20 23:17:41,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 857 transitions, 5443 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-09-20 23:17:41,131 INFO L231 Difference]: Finished difference. Result has 348 places, 476 transitions, 3296 flow [2022-09-20 23:17:41,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3296, PETRI_PLACES=348, PETRI_TRANSITIONS=476} [2022-09-20 23:17:41,133 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 107 predicate places. [2022-09-20 23:17:41,133 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 476 transitions, 3296 flow [2022-09-20 23:17:41,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 185.5) internal successors, (3710), 20 states have internal predecessors, (3710), 0 states have call successors, (0), 0 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 23:17:41,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:41,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:41,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 23:17:41,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-20 23:17:41,335 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:17:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1646136355, now seen corresponding path program 1 times [2022-09-20 23:17:41,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:41,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448542323] [2022-09-20 23:17:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:41,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:17:41,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448542323] [2022-09-20 23:17:41,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448542323] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:41,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229567773] [2022-09-20 23:17:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:17:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:41,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:17:41,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 23:17:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:41,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-20 23:17:41,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:17:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:17:41,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:17:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 23:17:42,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229567773] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 23:17:42,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 23:17:42,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2022-09-20 23:17:42,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912116990] [2022-09-20 23:17:42,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 23:17:42,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 23:17:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 23:17:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-09-20 23:17:42,204 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 267 [2022-09-20 23:17:42,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 476 transitions, 3296 flow. Second operand has 11 states, 11 states have (on average 216.9090909090909) internal successors, (2386), 11 states have internal predecessors, (2386), 0 states have call successors, (0), 0 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 23:17:42,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:42,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 267 [2022-09-20 23:17:42,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:18:04,910 INFO L130 PetriNetUnfolder]: 50698/82437 cut-off events. [2022-09-20 23:18:04,910 INFO L131 PetriNetUnfolder]: For 1399211/1399242 co-relation queries the response was YES. [2022-09-20 23:18:06,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422935 conditions, 82437 events. 50698/82437 cut-off events. For 1399211/1399242 co-relation queries the response was YES. Maximal size of possible extension queue 3446. Compared 733236 event pairs, 5256 based on Foata normal form. 1002/80701 useless extension candidates. Maximal degree in co-relation 422878. Up to 12726 conditions per place. [2022-09-20 23:18:07,212 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 855 selfloop transitions, 342 changer transitions 0/1392 dead transitions. [2022-09-20 23:18:07,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1392 transitions, 15327 flow [2022-09-20 23:18:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 23:18:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 23:18:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3834 transitions. [2022-09-20 23:18:07,218 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8446794448116325 [2022-09-20 23:18:07,218 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3834 transitions. [2022-09-20 23:18:07,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3834 transitions. [2022-09-20 23:18:07,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:18:07,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3834 transitions. [2022-09-20 23:18:07,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 225.52941176470588) internal successors, (3834), 17 states have internal predecessors, (3834), 0 states have call successors, (0), 0 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 23:18:07,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 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 23:18:07,230 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 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 23:18:07,230 INFO L175 Difference]: Start difference. First operand has 348 places, 476 transitions, 3296 flow. Second operand 17 states and 3834 transitions. [2022-09-20 23:18:07,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1392 transitions, 15327 flow [2022-09-20 23:18:22,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1392 transitions, 14616 flow, removed 282 selfloop flow, removed 13 redundant places. [2022-09-20 23:18:22,611 INFO L231 Difference]: Finished difference. Result has 363 places, 785 transitions, 7952 flow [2022-09-20 23:18:22,612 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7952, PETRI_PLACES=363, PETRI_TRANSITIONS=785} [2022-09-20 23:18:22,612 INFO L287 CegarLoopForPetriNet]: 241 programPoint places, 122 predicate places. [2022-09-20 23:18:22,612 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 785 transitions, 7952 flow [2022-09-20 23:18:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 216.9090909090909) internal successors, (2386), 11 states have internal predecessors, (2386), 0 states have call successors, (0), 0 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 23:18:22,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:18:22,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:22,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 23:18:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:18:22,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 23:18:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:18:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash -148350316, now seen corresponding path program 1 times [2022-09-20 23:18:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:18:22,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409703206] [2022-09-20 23:18:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:18:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:18:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:18:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:18:26,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:18:26,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409703206] [2022-09-20 23:18:26,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409703206] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:18:26,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763139167] [2022-09-20 23:18:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:18:26,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:18:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:18:26,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 23:18:26,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 23:18:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:18:26,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 120 conjunts are in the unsatisfiable core [2022-09-20 23:18:26,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:18:27,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:18:28,067 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-20 23:18:28,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-20 23:18:29,771 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-20 23:18:29,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-20 23:18:30,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-20 23:18:31,455 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-09-20 23:18:31,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-09-20 23:18:31,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:18:32,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:18:32,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:18:33,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 23:18:33,708 INFO L356 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-09-20 23:18:33,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 48 [2022-09-20 23:18:33,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-09-20 23:18:34,357 INFO L356 Elim1Store]: treesize reduction 33, result has 42.1 percent of original size [2022-09-20 23:18:34,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 36 [2022-09-20 23:18:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:18:34,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:18:44,286 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:18:44,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 150 [2022-09-20 23:18:44,744 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 23:18:44,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1006307810 treesize of output 980558818 Received shutdown request... [2022-09-20 23:31:17,090 WARN L249 SmtUtils]: Removed 1 from assertion stack [2022-09-20 23:31:17,091 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 23:31:17,091 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-20 23:31:17,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-09-20 23:31:17,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-20 23:31:17,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:31:17,312 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 228 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-09-20 23:31:17,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-09-20 23:31:17,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-09-20 23:31:17,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-09-20 23:31:17,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-09-20 23:31:17,315 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 23:31:17,318 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 23:31:17,318 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 23:31:17,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 11:31:17 BasicIcfg [2022-09-20 23:31:17,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 23:31:17,323 INFO L158 Benchmark]: Toolchain (without parser) took 842902.80ms. Allocated memory was 177.2MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 115.5MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 6.7GB. Max. memory is 8.0GB. [2022-09-20 23:31:17,323 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 177.2MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 23:31:17,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.77ms. Allocated memory was 177.2MB in the beginning and 254.8MB in the end (delta: 77.6MB). Free memory was 115.3MB in the beginning and 222.6MB in the end (delta: -107.3MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. [2022-09-20 23:31:17,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.50ms. Allocated memory is still 254.8MB. Free memory was 222.6MB in the beginning and 220.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 23:31:17,324 INFO L158 Benchmark]: Boogie Preprocessor took 60.56ms. Allocated memory is still 254.8MB. Free memory was 220.0MB in the beginning and 217.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 23:31:17,324 INFO L158 Benchmark]: RCFGBuilder took 914.49ms. Allocated memory is still 254.8MB. Free memory was 217.9MB in the beginning and 173.9MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2022-09-20 23:31:17,324 INFO L158 Benchmark]: TraceAbstraction took 841582.64ms. Allocated memory was 254.8MB in the beginning and 7.5GB in the end (delta: 7.2GB). Free memory was 173.3MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 6.7GB. Max. memory is 8.0GB. [2022-09-20 23:31:17,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 177.2MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 286.77ms. Allocated memory was 177.2MB in the beginning and 254.8MB in the end (delta: 77.6MB). Free memory was 115.3MB in the beginning and 222.6MB in the end (delta: -107.3MB). Peak memory consumption was 13.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.50ms. Allocated memory is still 254.8MB. Free memory was 222.6MB in the beginning and 220.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.56ms. Allocated memory is still 254.8MB. Free memory was 220.0MB in the beginning and 217.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 914.49ms. Allocated memory is still 254.8MB. Free memory was 217.9MB in the beginning and 173.9MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * TraceAbstraction took 841582.64ms. Allocated memory was 254.8MB in the beginning and 7.5GB in the end (delta: 7.2GB). Free memory was 173.3MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 6.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 228 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 228 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 228 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 228 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 228 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-20-3-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 280 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 841.4s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 60.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1964 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1964 mSDsluCounter, 1607 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2188 mSDsCounter, 190 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3406 IncrementalHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 190 mSolverCounterUnsat, 398 mSDtfsCounter, 3406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1491 GetRequests, 1310 SyntacticMatches, 4 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7952occurred in iteration=13, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 3325 NumberOfCodeBlocks, 3325 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3967 ConstructedInterpolants, 0 QuantifiedInterpolants, 14415 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1656 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 19 InterpolantComputations, 11 PerfectInterpolantSequences, 54/67 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown