/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:31:20,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:31:20,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:31:20,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:31:20,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:31:20,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:31:20,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:31:20,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:31:20,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:31:20,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:31:20,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:31:20,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:31:20,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:31:20,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:31:20,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:31:20,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:31:20,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:31:20,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:31:20,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:31:20,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:31:20,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:31:20,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:31:20,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:31:20,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:31:20,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 22:31:20,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:31:20,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:31:20,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:31:20,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:31:20,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:31:20,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:31:20,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:31:20,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:31:20,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:31:20,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:31:20,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:31:20,409 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 22:31:20,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:31:20,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:31:20,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:31:20,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:31:20,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:31:20,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:31:20,424 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:31:20,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:31:20,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:31:20,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:31:20,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:31:20,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:31:20,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:31:20,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:31:20,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:31:20,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:31:20,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:31:20,427 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:31:20,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:31:20,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:31:20,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:31:20,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:31:20,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:31:20,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:31:20,625 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:31:20,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2022-09-20 22:31:20,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a98b0652/1224b967711046bc86659668480525ea/FLAG66a5d3523 [2022-09-20 22:31:21,087 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:31:21,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2022-09-20 22:31:21,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a98b0652/1224b967711046bc86659668480525ea/FLAG66a5d3523 [2022-09-20 22:31:21,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a98b0652/1224b967711046bc86659668480525ea [2022-09-20 22:31:21,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:31:21,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:31:21,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:31:21,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:31:21,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:31:21,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f647e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21, skipping insertion in model container [2022-09-20 22:31:21,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:31:21,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:31:21,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2022-09-20 22:31:21,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:31:21,502 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:31:21,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2022-09-20 22:31:21,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:31:21,567 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:31:21,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21 WrapperNode [2022-09-20 22:31:21,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:31:21,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:31:21,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:31:21,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:31:21,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,599 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-09-20 22:31:21,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:31:21,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:31:21,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:31:21,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:31:21,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:31:21,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:31:21,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:31:21,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:31:21,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (1/1) ... [2022-09-20 22:31:21,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:31:21,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:31:21,671 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 22:31:21,687 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 22:31:21,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:31:21,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 22:31:21,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:31:21,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:31:21,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:31:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 22:31:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 22:31:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 22:31:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 22:31:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 22:31:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 22:31:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:31:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 22:31:21,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:31:21,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:31:21,714 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 22:31:21,824 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:31:21,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:31:21,963 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:31:21,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:31:21,968 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:31:21,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:31:21 BoogieIcfgContainer [2022-09-20 22:31:21,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:31:21,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:31:21,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:31:21,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:31:21,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:31:21" (1/3) ... [2022-09-20 22:31:21,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266d4bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:31:21, skipping insertion in model container [2022-09-20 22:31:21,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:31:21" (2/3) ... [2022-09-20 22:31:21,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266d4bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:31:21, skipping insertion in model container [2022-09-20 22:31:21,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:31:21" (3/3) ... [2022-09-20 22:31:21,977 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2022-09-20 22:31:21,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:31:21,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:31:21,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:31:22,040 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:31:22,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 22:31:22,099 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-09-20 22:31:22,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:31:22,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-09-20 22:31:22,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 22:31:22,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-09-20 22:31:22,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:31:22,119 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;@6f35144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:31:22,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 22:31:22,136 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-20 22:31:22,137 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:31:22,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:22,138 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] [2022-09-20 22:31:22,138 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 1 more)] === [2022-09-20 22:31:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-09-20 22:31:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:22,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5479991] [2022-09-20 22:31:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:22,556 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 22:31:22,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:22,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5479991] [2022-09-20 22:31:22,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5479991] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:22,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:22,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102948247] [2022-09-20 22:31:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:22,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:22,598 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:31:22,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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 22:31:22,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:22,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:31:22,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:22,960 INFO L130 PetriNetUnfolder]: 350/899 cut-off events. [2022-09-20 22:31:22,960 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-20 22:31:22,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 899 events. 350/899 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5316 event pairs, 58 based on Foata normal form. 31/894 useless extension candidates. Maximal degree in co-relation 1486. Up to 188 conditions per place. [2022-09-20 22:31:22,969 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 26 selfloop transitions, 6 changer transitions 47/135 dead transitions. [2022-09-20 22:31:22,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 446 flow [2022-09-20 22:31:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:31:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:31:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 995 transitions. [2022-09-20 22:31:22,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8319397993311036 [2022-09-20 22:31:22,990 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 995 transitions. [2022-09-20 22:31:22,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 995 transitions. [2022-09-20 22:31:22,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:22,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 995 transitions. [2022-09-20 22:31:23,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.53846153846153) internal successors, (995), 13 states have internal predecessors, (995), 0 states have call successors, (0), 0 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 22:31:23,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 22:31:23,008 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 22:31:23,009 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 995 transitions. [2022-09-20 22:31:23,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 446 flow [2022-09-20 22:31:23,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 135 transitions, 440 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:31:23,018 INFO L231 Difference]: Finished difference. Result has 105 places, 78 transitions, 240 flow [2022-09-20 22:31:23,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2022-09-20 22:31:23,023 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-09-20 22:31:23,023 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 240 flow [2022-09-20 22:31:23,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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 22:31:23,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:23,024 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] [2022-09-20 22:31:23,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:31:23,025 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 1 more)] === [2022-09-20 22:31:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1081069657, now seen corresponding path program 1 times [2022-09-20 22:31:23,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:23,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880682222] [2022-09-20 22:31:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:23,163 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 22:31:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:23,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880682222] [2022-09-20 22:31:23,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880682222] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:23,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:23,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:23,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317550827] [2022-09-20 22:31:23,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:23,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:23,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:23,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:23,187 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:31:23,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 22:31:23,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:23,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:31:23,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:23,397 INFO L130 PetriNetUnfolder]: 194/648 cut-off events. [2022-09-20 22:31:23,397 INFO L131 PetriNetUnfolder]: For 1321/1550 co-relation queries the response was YES. [2022-09-20 22:31:23,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 648 events. 194/648 cut-off events. For 1321/1550 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3716 event pairs, 4 based on Foata normal form. 19/649 useless extension candidates. Maximal degree in co-relation 1922. Up to 147 conditions per place. [2022-09-20 22:31:23,401 INFO L137 encePairwiseOnDemand]: 79/92 looper letters, 24 selfloop transitions, 15 changer transitions 52/147 dead transitions. [2022-09-20 22:31:23,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 147 transitions, 926 flow [2022-09-20 22:31:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:31:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:31:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 989 transitions. [2022-09-20 22:31:23,404 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2022-09-20 22:31:23,404 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 989 transitions. [2022-09-20 22:31:23,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 989 transitions. [2022-09-20 22:31:23,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:23,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 989 transitions. [2022-09-20 22:31:23,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.07692307692308) internal successors, (989), 13 states have internal predecessors, (989), 0 states have call successors, (0), 0 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 22:31:23,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 22:31:23,409 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 22:31:23,409 INFO L175 Difference]: Start difference. First operand has 105 places, 78 transitions, 240 flow. Second operand 13 states and 989 transitions. [2022-09-20 22:31:23,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 147 transitions, 926 flow [2022-09-20 22:31:23,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 898 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-09-20 22:31:23,416 INFO L231 Difference]: Finished difference. Result has 116 places, 86 transitions, 391 flow [2022-09-20 22:31:23,416 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=391, PETRI_PLACES=116, PETRI_TRANSITIONS=86} [2022-09-20 22:31:23,416 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-09-20 22:31:23,417 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 86 transitions, 391 flow [2022-09-20 22:31:23,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 22:31:23,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:23,417 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] [2022-09-20 22:31:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:31:23,418 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 1 more)] === [2022-09-20 22:31:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1530825922, now seen corresponding path program 1 times [2022-09-20 22:31:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507196545] [2022-09-20 22:31:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:23,562 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 22:31:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:23,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507196545] [2022-09-20 22:31:23,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507196545] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:23,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:23,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765885245] [2022-09-20 22:31:23,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:23,566 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-09-20 22:31:23,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 86 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 22:31:23,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:23,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-09-20 22:31:23,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:23,692 INFO L130 PetriNetUnfolder]: 106/475 cut-off events. [2022-09-20 22:31:23,692 INFO L131 PetriNetUnfolder]: For 1867/2487 co-relation queries the response was YES. [2022-09-20 22:31:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 475 events. 106/475 cut-off events. For 1867/2487 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2777 event pairs, 53 based on Foata normal form. 10/458 useless extension candidates. Maximal degree in co-relation 1629. Up to 109 conditions per place. [2022-09-20 22:31:23,697 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 19 selfloop transitions, 6 changer transitions 25/110 dead transitions. [2022-09-20 22:31:23,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 716 flow [2022-09-20 22:31:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:31:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:31:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-09-20 22:31:23,699 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8524844720496895 [2022-09-20 22:31:23,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2022-09-20 22:31:23,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2022-09-20 22:31:23,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:23,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2022-09-20 22:31:23,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 22:31:23,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 22:31:23,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 22:31:23,702 INFO L175 Difference]: Start difference. First operand has 116 places, 86 transitions, 391 flow. Second operand 7 states and 549 transitions. [2022-09-20 22:31:23,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 716 flow [2022-09-20 22:31:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 676 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-09-20 22:31:23,710 INFO L231 Difference]: Finished difference. Result has 114 places, 82 transitions, 345 flow [2022-09-20 22:31:23,711 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=114, PETRI_TRANSITIONS=82} [2022-09-20 22:31:23,712 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-09-20 22:31:23,712 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 82 transitions, 345 flow [2022-09-20 22:31:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 22:31:23,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:23,713 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] [2022-09-20 22:31:23,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:31:23,713 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 1 more)] === [2022-09-20 22:31:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1519119066, now seen corresponding path program 1 times [2022-09-20 22:31:23,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:23,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534137963] [2022-09-20 22:31:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:23,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:23,822 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 22:31:23,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:23,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534137963] [2022-09-20 22:31:23,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534137963] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:23,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:23,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335494443] [2022-09-20 22:31:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:23,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:23,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:23,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:23,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:23,828 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:31:23,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 82 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 22:31:23,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:23,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:31:23,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:23,964 INFO L130 PetriNetUnfolder]: 72/356 cut-off events. [2022-09-20 22:31:23,964 INFO L131 PetriNetUnfolder]: For 953/1225 co-relation queries the response was YES. [2022-09-20 22:31:23,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 356 events. 72/356 cut-off events. For 953/1225 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1780 event pairs, 5 based on Foata normal form. 11/355 useless extension candidates. Maximal degree in co-relation 1112. Up to 76 conditions per place. [2022-09-20 22:31:23,967 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 23 selfloop transitions, 9 changer transitions 26/114 dead transitions. [2022-09-20 22:31:23,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 729 flow [2022-09-20 22:31:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:31:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:31:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 749 transitions. [2022-09-20 22:31:23,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8141304347826087 [2022-09-20 22:31:23,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 749 transitions. [2022-09-20 22:31:23,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 749 transitions. [2022-09-20 22:31:23,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:23,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 749 transitions. [2022-09-20 22:31:23,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:31:23,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 22:31:23,972 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 22:31:23,972 INFO L175 Difference]: Start difference. First operand has 114 places, 82 transitions, 345 flow. Second operand 10 states and 749 transitions. [2022-09-20 22:31:23,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 729 flow [2022-09-20 22:31:23,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 634 flow, removed 30 selfloop flow, removed 11 redundant places. [2022-09-20 22:31:23,978 INFO L231 Difference]: Finished difference. Result has 116 places, 81 transitions, 313 flow [2022-09-20 22:31:23,978 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=313, PETRI_PLACES=116, PETRI_TRANSITIONS=81} [2022-09-20 22:31:23,979 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-09-20 22:31:23,979 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 81 transitions, 313 flow [2022-09-20 22:31:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 22:31:23,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:23,982 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] [2022-09-20 22:31:23,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:31:23,986 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 1 more)] === [2022-09-20 22:31:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash 883716798, now seen corresponding path program 2 times [2022-09-20 22:31:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:23,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196270666] [2022-09-20 22:31:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:24,066 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 22:31:24,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:24,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196270666] [2022-09-20 22:31:24,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196270666] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:24,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:24,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680880561] [2022-09-20 22:31:24,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:24,069 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-09-20 22:31:24,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 81 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 22:31:24,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:24,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-09-20 22:31:24,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:24,162 INFO L130 PetriNetUnfolder]: 25/226 cut-off events. [2022-09-20 22:31:24,163 INFO L131 PetriNetUnfolder]: For 573/678 co-relation queries the response was YES. [2022-09-20 22:31:24,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 226 events. 25/226 cut-off events. For 573/678 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 998 event pairs, 13 based on Foata normal form. 10/226 useless extension candidates. Maximal degree in co-relation 615. Up to 35 conditions per place. [2022-09-20 22:31:24,164 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 16 selfloop transitions, 5 changer transitions 13/94 dead transitions. [2022-09-20 22:31:24,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 94 transitions, 499 flow [2022-09-20 22:31:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:31:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:31:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2022-09-20 22:31:24,165 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8385093167701864 [2022-09-20 22:31:24,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2022-09-20 22:31:24,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2022-09-20 22:31:24,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:24,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2022-09-20 22:31:24,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 22:31:24,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 22:31:24,168 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 22:31:24,168 INFO L175 Difference]: Start difference. First operand has 116 places, 81 transitions, 313 flow. Second operand 7 states and 540 transitions. [2022-09-20 22:31:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 94 transitions, 499 flow [2022-09-20 22:31:24,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 94 transitions, 470 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-09-20 22:31:24,171 INFO L231 Difference]: Finished difference. Result has 113 places, 79 transitions, 299 flow [2022-09-20 22:31:24,171 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=113, PETRI_TRANSITIONS=79} [2022-09-20 22:31:24,171 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-09-20 22:31:24,171 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 79 transitions, 299 flow [2022-09-20 22:31:24,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 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 22:31:24,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:24,172 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] [2022-09-20 22:31:24,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:31:24,172 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 1 more)] === [2022-09-20 22:31:24,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:24,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1116850795, now seen corresponding path program 1 times [2022-09-20 22:31:24,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:24,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435761452] [2022-09-20 22:31:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:24,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:24,248 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 22:31:24,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:24,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435761452] [2022-09-20 22:31:24,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435761452] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:24,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:24,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:31:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744123263] [2022-09-20 22:31:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:31:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:24,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:31:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:31:24,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-09-20 22:31:24,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 79 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 22:31:24,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:24,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-09-20 22:31:24,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:24,322 INFO L130 PetriNetUnfolder]: 16/149 cut-off events. [2022-09-20 22:31:24,322 INFO L131 PetriNetUnfolder]: For 274/365 co-relation queries the response was YES. [2022-09-20 22:31:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 149 events. 16/149 cut-off events. For 274/365 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 375 event pairs, 5 based on Foata normal form. 4/147 useless extension candidates. Maximal degree in co-relation 398. Up to 25 conditions per place. [2022-09-20 22:31:24,324 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 14 selfloop transitions, 5 changer transitions 15/90 dead transitions. [2022-09-20 22:31:24,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 90 transitions, 449 flow [2022-09-20 22:31:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:31:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:31:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2022-09-20 22:31:24,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8007246376811594 [2022-09-20 22:31:24,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2022-09-20 22:31:24,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2022-09-20 22:31:24,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:24,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2022-09-20 22:31:24,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.66666666666667) internal successors, (663), 9 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 22:31:24,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 22:31:24,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 22:31:24,330 INFO L175 Difference]: Start difference. First operand has 113 places, 79 transitions, 299 flow. Second operand 9 states and 663 transitions. [2022-09-20 22:31:24,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 90 transitions, 449 flow [2022-09-20 22:31:24,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 90 transitions, 416 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-09-20 22:31:24,333 INFO L231 Difference]: Finished difference. Result has 114 places, 74 transitions, 236 flow [2022-09-20 22:31:24,333 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=114, PETRI_TRANSITIONS=74} [2022-09-20 22:31:24,333 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-09-20 22:31:24,333 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 74 transitions, 236 flow [2022-09-20 22:31:24,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 22:31:24,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:24,334 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] [2022-09-20 22:31:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:31:24,334 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 1 more)] === [2022-09-20 22:31:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:24,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1667752555, now seen corresponding path program 2 times [2022-09-20 22:31:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:24,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174523481] [2022-09-20 22:31:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:24,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:24,412 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 22:31:24,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174523481] [2022-09-20 22:31:24,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174523481] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:24,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:24,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:31:24,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591577836] [2022-09-20 22:31:24,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:24,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:31:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:31:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:31:24,414 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:31:24,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 74 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 22:31:24,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:24,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:31:24,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:24,503 INFO L130 PetriNetUnfolder]: 134/399 cut-off events. [2022-09-20 22:31:24,503 INFO L131 PetriNetUnfolder]: For 217/218 co-relation queries the response was YES. [2022-09-20 22:31:24,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 399 events. 134/399 cut-off events. For 217/218 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2008 event pairs, 14 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 812. Up to 90 conditions per place. [2022-09-20 22:31:24,505 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 14 selfloop transitions, 6 changer transitions 25/105 dead transitions. [2022-09-20 22:31:24,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 105 transitions, 390 flow [2022-09-20 22:31:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:31:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:31:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 797 transitions. [2022-09-20 22:31:24,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.866304347826087 [2022-09-20 22:31:24,507 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 797 transitions. [2022-09-20 22:31:24,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 797 transitions. [2022-09-20 22:31:24,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:24,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 797 transitions. [2022-09-20 22:31:24,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.7) internal successors, (797), 10 states have internal predecessors, (797), 0 states have call successors, (0), 0 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 22:31:24,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 22:31:24,510 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 22:31:24,510 INFO L175 Difference]: Start difference. First operand has 114 places, 74 transitions, 236 flow. Second operand 10 states and 797 transitions. [2022-09-20 22:31:24,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 105 transitions, 390 flow [2022-09-20 22:31:24,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 346 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-09-20 22:31:24,513 INFO L231 Difference]: Finished difference. Result has 111 places, 76 transitions, 246 flow [2022-09-20 22:31:24,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=111, PETRI_TRANSITIONS=76} [2022-09-20 22:31:24,513 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 27 predicate places. [2022-09-20 22:31:24,514 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 76 transitions, 246 flow [2022-09-20 22:31:24,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 22:31:24,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:24,514 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] [2022-09-20 22:31:24,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:31:24,514 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 1 more)] === [2022-09-20 22:31:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2075842730, now seen corresponding path program 1 times [2022-09-20 22:31:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:24,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256960023] [2022-09-20 22:31:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:24,588 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 22:31:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:24,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256960023] [2022-09-20 22:31:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256960023] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:24,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:24,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572131323] [2022-09-20 22:31:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:24,590 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:31:24,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 76 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 22:31:24,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:24,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:31:24,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:24,690 INFO L130 PetriNetUnfolder]: 60/238 cut-off events. [2022-09-20 22:31:24,690 INFO L131 PetriNetUnfolder]: For 365/399 co-relation queries the response was YES. [2022-09-20 22:31:24,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 238 events. 60/238 cut-off events. For 365/399 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 863 event pairs, 4 based on Foata normal form. 12/245 useless extension candidates. Maximal degree in co-relation 683. Up to 79 conditions per place. [2022-09-20 22:31:24,692 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 9 changer transitions 19/102 dead transitions. [2022-09-20 22:31:24,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 102 transitions, 511 flow [2022-09-20 22:31:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:31:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:31:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 794 transitions. [2022-09-20 22:31:24,694 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8630434782608696 [2022-09-20 22:31:24,695 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 794 transitions. [2022-09-20 22:31:24,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 794 transitions. [2022-09-20 22:31:24,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:24,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 794 transitions. [2022-09-20 22:31:24,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.4) internal successors, (794), 10 states have internal predecessors, (794), 0 states have call successors, (0), 0 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 22:31:24,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 22:31:24,699 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 22:31:24,699 INFO L175 Difference]: Start difference. First operand has 111 places, 76 transitions, 246 flow. Second operand 10 states and 794 transitions. [2022-09-20 22:31:24,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 102 transitions, 511 flow [2022-09-20 22:31:24,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 485 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-09-20 22:31:24,702 INFO L231 Difference]: Finished difference. Result has 114 places, 79 transitions, 312 flow [2022-09-20 22:31:24,703 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=114, PETRI_TRANSITIONS=79} [2022-09-20 22:31:24,703 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-09-20 22:31:24,703 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 79 transitions, 312 flow [2022-09-20 22:31:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 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 22:31:24,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:24,704 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] [2022-09-20 22:31:24,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:31:24,704 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 1 more)] === [2022-09-20 22:31:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1560518903, now seen corresponding path program 1 times [2022-09-20 22:31:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:24,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365108932] [2022-09-20 22:31:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:24,768 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 22:31:24,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:24,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365108932] [2022-09-20 22:31:24,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365108932] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:24,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:24,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:31:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084463616] [2022-09-20 22:31:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:31:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:24,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:31:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:31:24,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:31:24,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 79 transitions, 312 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 22:31:24,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:24,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:31:24,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:24,858 INFO L130 PetriNetUnfolder]: 17/126 cut-off events. [2022-09-20 22:31:24,859 INFO L131 PetriNetUnfolder]: For 429/475 co-relation queries the response was YES. [2022-09-20 22:31:24,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 126 events. 17/126 cut-off events. For 429/475 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 243 event pairs, 0 based on Foata normal form. 14/139 useless extension candidates. Maximal degree in co-relation 379. Up to 31 conditions per place. [2022-09-20 22:31:24,859 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 8 selfloop transitions, 12 changer transitions 13/93 dead transitions. [2022-09-20 22:31:24,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 93 transitions, 508 flow [2022-09-20 22:31:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:31:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:31:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 860 transitions. [2022-09-20 22:31:24,861 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.849802371541502 [2022-09-20 22:31:24,861 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 860 transitions. [2022-09-20 22:31:24,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 860 transitions. [2022-09-20 22:31:24,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:24,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 860 transitions. [2022-09-20 22:31:24,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.18181818181819) internal successors, (860), 11 states have internal predecessors, (860), 0 states have call successors, (0), 0 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 22:31:24,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 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 22:31:24,865 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 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 22:31:24,866 INFO L175 Difference]: Start difference. First operand has 114 places, 79 transitions, 312 flow. Second operand 11 states and 860 transitions. [2022-09-20 22:31:24,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 93 transitions, 508 flow [2022-09-20 22:31:24,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 93 transitions, 393 flow, removed 47 selfloop flow, removed 14 redundant places. [2022-09-20 22:31:24,868 INFO L231 Difference]: Finished difference. Result has 112 places, 79 transitions, 282 flow [2022-09-20 22:31:24,868 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=112, PETRI_TRANSITIONS=79} [2022-09-20 22:31:24,870 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2022-09-20 22:31:24,871 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 79 transitions, 282 flow [2022-09-20 22:31:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 22:31:24,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:31:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:31:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:31:24,872 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 1 more)] === [2022-09-20 22:31:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:31:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash 242483542, now seen corresponding path program 1 times [2022-09-20 22:31:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:31:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768488182] [2022-09-20 22:31:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:31:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:31:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:31:24,961 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 22:31:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:31:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768488182] [2022-09-20 22:31:24,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768488182] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:31:24,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:31:24,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:31:24,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844111554] [2022-09-20 22:31:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:31:24,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:31:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:31:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:31:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:31:24,963 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 22:31:24,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 79 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 22:31:24,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:31:24,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 22:31:24,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:31:25,011 INFO L130 PetriNetUnfolder]: 6/94 cut-off events. [2022-09-20 22:31:25,011 INFO L131 PetriNetUnfolder]: For 89/95 co-relation queries the response was YES. [2022-09-20 22:31:25,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 94 events. 6/94 cut-off events. For 89/95 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 189. Up to 11 conditions per place. [2022-09-20 22:31:25,011 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-09-20 22:31:25,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 78 transitions, 308 flow [2022-09-20 22:31:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:31:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:31:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2022-09-20 22:31:25,013 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-09-20 22:31:25,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2022-09-20 22:31:25,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2022-09-20 22:31:25,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:31:25,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2022-09-20 22:31:25,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 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 22:31:25,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 22:31:25,016 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 22:31:25,016 INFO L175 Difference]: Start difference. First operand has 112 places, 79 transitions, 282 flow. Second operand 7 states and 539 transitions. [2022-09-20 22:31:25,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 78 transitions, 308 flow [2022-09-20 22:31:25,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 78 transitions, 226 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-09-20 22:31:25,017 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2022-09-20 22:31:25,018 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2022-09-20 22:31:25,018 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-09-20 22:31:25,019 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2022-09-20 22:31:25,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 22:31:25,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 22:31:25,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 22:31:25,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 22:31:25,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 22:31:25,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:31:25,031 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-09-20 22:31:25,033 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:31:25,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:31:25,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:31:25 BasicIcfg [2022-09-20 22:31:25,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:31:25,038 INFO L158 Benchmark]: Toolchain (without parser) took 3905.73ms. Allocated memory was 215.0MB in the beginning and 299.9MB in the end (delta: 84.9MB). Free memory was 160.3MB in the beginning and 251.3MB in the end (delta: -91.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:31:25,038 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 215.0MB. Free memory is still 178.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:31:25,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.54ms. Allocated memory was 215.0MB in the beginning and 299.9MB in the end (delta: 84.9MB). Free memory was 160.2MB in the beginning and 264.5MB in the end (delta: -104.3MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-09-20 22:31:25,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.14ms. Allocated memory is still 299.9MB. Free memory was 264.5MB in the beginning and 262.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:31:25,038 INFO L158 Benchmark]: Boogie Preprocessor took 25.11ms. Allocated memory is still 299.9MB. Free memory was 262.4MB in the beginning and 260.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:31:25,038 INFO L158 Benchmark]: RCFGBuilder took 344.98ms. Allocated memory is still 299.9MB. Free memory was 260.9MB in the beginning and 247.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 22:31:25,039 INFO L158 Benchmark]: TraceAbstraction took 3065.09ms. Allocated memory is still 299.9MB. Free memory was 246.7MB in the beginning and 251.3MB in the end (delta: -4.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:31:25,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 215.0MB. Free memory is still 178.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 434.54ms. Allocated memory was 215.0MB in the beginning and 299.9MB in the end (delta: 84.9MB). Free memory was 160.2MB in the beginning and 264.5MB in the end (delta: -104.3MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.14ms. Allocated memory is still 299.9MB. Free memory was 264.5MB in the beginning and 262.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.11ms. Allocated memory is still 299.9MB. Free memory was 262.4MB in the beginning and 260.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 344.98ms. Allocated memory is still 299.9MB. Free memory was 260.9MB in the beginning and 247.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3065.09ms. Allocated memory is still 299.9MB. Free memory was 246.7MB in the beginning and 251.3MB in the end (delta: -4.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 335 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 537 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 534 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 623 IncrementalHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 134 mSDtfsCounter, 623 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=391occurred in iteration=2, InterpolantAutomatonStates: 97, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 614 NumberOfCodeBlocks, 614 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 604 ConstructedInterpolants, 0 QuantifiedInterpolants, 2516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 22:31:25,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...