/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:38:36,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:38:36,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:38:36,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:38:36,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:38:36,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:38:36,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:38:36,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:38:36,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:38:36,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:38:36,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:38:36,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:38:36,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:38:36,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:38:36,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:38:36,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:38:36,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:38:36,761 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-VariableLbe.epf [2023-01-28 00:38:36,776 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:38:36,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:38:36,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:38:36,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:38:36,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:38:36,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:38:36,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:38:36,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:38:36,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:38:36,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:38:36,780 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:38:36,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:38:36,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:38:36,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:38:36,975 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:38:36,976 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:38:36,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-01-28 00:38:37,889 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:38:38,057 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:38:38,057 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-01-28 00:38:38,065 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f744784/d753deb9fc6f44fbbe3a98aff458e600/FLAGf368955ea [2023-01-28 00:38:38,074 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f744784/d753deb9fc6f44fbbe3a98aff458e600 [2023-01-28 00:38:38,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:38:38,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:38:38,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:38:38,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:38:38,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:38:38,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a515dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38, skipping insertion in model container [2023-01-28 00:38:38,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:38:38,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:38:38,255 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2023-01-28 00:38:38,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:38:38,423 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:38:38,432 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2023-01-28 00:38:38,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:38:38,497 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:38:38,497 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:38:38,502 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:38:38,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38 WrapperNode [2023-01-28 00:38:38,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:38:38,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:38:38,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:38:38,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:38:38,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,559 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2023-01-28 00:38:38,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:38:38,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:38:38,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:38:38,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:38:38,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,587 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:38:38,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:38:38,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:38:38,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:38:38,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (1/1) ... [2023-01-28 00:38:38,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:38:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:38:38,630 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) [2023-01-28 00:38:38,647 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 [2023-01-28 00:38:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:38:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:38:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:38:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-01-28 00:38:38,656 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:38:38,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:38:38,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:38:38,658 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:38:38,778 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:38:38,779 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:38:39,048 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:38:39,214 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:38:39,214 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:38:39,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:38:39 BoogieIcfgContainer [2023-01-28 00:38:39,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:38:39,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:38:39,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:38:39,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:38:39,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:38:38" (1/3) ... [2023-01-28 00:38:39,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1534c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:38:39, skipping insertion in model container [2023-01-28 00:38:39,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:38:38" (2/3) ... [2023-01-28 00:38:39,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1534c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:38:39, skipping insertion in model container [2023-01-28 00:38:39,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:38:39" (3/3) ... [2023-01-28 00:38:39,221 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2023-01-28 00:38:39,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:38:39,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 00:38:39,231 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:38:39,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:38:39,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-01-28 00:38:39,375 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-01-28 00:38:39,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:38:39,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-01-28 00:38:39,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-01-28 00:38:39,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-01-28 00:38:39,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:38:39,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-01-28 00:38:39,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-01-28 00:38:39,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-01-28 00:38:39,414 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-01-28 00:38:39,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:38:39,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-01-28 00:38:39,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 2986 [2023-01-28 00:38:42,719 INFO L134 LiptonReduction]: Checked pairs total: 8489 [2023-01-28 00:38:42,719 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-01-28 00:38:42,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:38:42,743 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;@2a36493a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:38:42,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-28 00:38:42,755 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 00:38:42,756 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:38:42,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:42,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:42,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:42,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1745103999, now seen corresponding path program 1 times [2023-01-28 00:38:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043192916] [2023-01-28 00:38:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043192916] [2023-01-28 00:38:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043192916] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:43,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:38:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744766080] [2023-01-28 00:38:43,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:43,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:38:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:43,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:38:43,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:38:43,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 235 [2023-01-28 00:38:43,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:43,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:43,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 235 [2023-01-28 00:38:43,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:43,718 INFO L130 PetriNetUnfolder]: 3975/5715 cut-off events. [2023-01-28 00:38:43,718 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-28 00:38:43,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11295 conditions, 5715 events. 3975/5715 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30661 event pairs, 1089 based on Foata normal form. 192/5483 useless extension candidates. Maximal degree in co-relation 11283. Up to 4303 conditions per place. [2023-01-28 00:38:43,742 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 35 selfloop transitions, 2 changer transitions 4/46 dead transitions. [2023-01-28 00:38:43,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 189 flow [2023-01-28 00:38:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:38:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:38:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-01-28 00:38:43,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475177304964539 [2023-01-28 00:38:43,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-01-28 00:38:43,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-01-28 00:38:43,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:43,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-01-28 00:38:43,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:43,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:43,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:43,762 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 386 transitions. [2023-01-28 00:38:43,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 189 flow [2023-01-28 00:38:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:38:43,766 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 68 flow [2023-01-28 00:38:43,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-01-28 00:38:43,769 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-01-28 00:38:43,769 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 68 flow [2023-01-28 00:38:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:43,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:43,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:38:43,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:43,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2095058766, now seen corresponding path program 1 times [2023-01-28 00:38:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520803507] [2023-01-28 00:38:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:44,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520803507] [2023-01-28 00:38:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520803507] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:44,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:44,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:38:44,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632930941] [2023-01-28 00:38:44,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:44,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:38:44,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:38:44,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:38:44,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 00:38:44,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:44,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:44,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 00:38:44,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:45,581 INFO L130 PetriNetUnfolder]: 12679/17328 cut-off events. [2023-01-28 00:38:45,581 INFO L131 PetriNetUnfolder]: For 908/908 co-relation queries the response was YES. [2023-01-28 00:38:45,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35830 conditions, 17328 events. 12679/17328 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 86519 event pairs, 2649 based on Foata normal form. 800/18128 useless extension candidates. Maximal degree in co-relation 35820. Up to 9301 conditions per place. [2023-01-28 00:38:45,660 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 45 selfloop transitions, 11 changer transitions 41/97 dead transitions. [2023-01-28 00:38:45,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 97 transitions, 410 flow [2023-01-28 00:38:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:38:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:38:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-01-28 00:38:45,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46930091185410333 [2023-01-28 00:38:45,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-01-28 00:38:45,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-01-28 00:38:45,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:45,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-01-28 00:38:45,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:45,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:45,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:45,669 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 68 flow. Second operand 7 states and 772 transitions. [2023-01-28 00:38:45,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 97 transitions, 410 flow [2023-01-28 00:38:45,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 97 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:38:45,674 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 170 flow [2023-01-28 00:38:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 00:38:45,675 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-01-28 00:38:45,675 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 170 flow [2023-01-28 00:38:45,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:45,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:45,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:45,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:38:45,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:45,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash -892731973, now seen corresponding path program 1 times [2023-01-28 00:38:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:45,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576309638] [2023-01-28 00:38:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576309638] [2023-01-28 00:38:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576309638] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:46,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:46,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:38:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678684396] [2023-01-28 00:38:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:46,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:38:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:46,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:38:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:38:46,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 00:38:46,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:46,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:46,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 00:38:46,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:47,537 INFO L130 PetriNetUnfolder]: 12378/17069 cut-off events. [2023-01-28 00:38:47,537 INFO L131 PetriNetUnfolder]: For 18696/18696 co-relation queries the response was YES. [2023-01-28 00:38:47,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52910 conditions, 17069 events. 12378/17069 cut-off events. For 18696/18696 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 89764 event pairs, 1495 based on Foata normal form. 598/17667 useless extension candidates. Maximal degree in co-relation 52894. Up to 11523 conditions per place. [2023-01-28 00:38:47,616 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 56 selfloop transitions, 21 changer transitions 37/114 dead transitions. [2023-01-28 00:38:47,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 114 transitions, 724 flow [2023-01-28 00:38:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:38:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:38:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2023-01-28 00:38:47,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47477203647416416 [2023-01-28 00:38:47,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2023-01-28 00:38:47,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2023-01-28 00:38:47,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:47,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2023-01-28 00:38:47,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:47,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:47,623 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:47,623 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 170 flow. Second operand 7 states and 781 transitions. [2023-01-28 00:38:47,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 114 transitions, 724 flow [2023-01-28 00:38:47,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 114 transitions, 712 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 00:38:47,860 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 308 flow [2023-01-28 00:38:47,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-01-28 00:38:47,861 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-01-28 00:38:47,861 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 308 flow [2023-01-28 00:38:47,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:47,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:47,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:47,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:38:47,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:47,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:47,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1904936741, now seen corresponding path program 1 times [2023-01-28 00:38:47,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:47,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671055921] [2023-01-28 00:38:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671055921] [2023-01-28 00:38:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671055921] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:38:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849704048] [2023-01-28 00:38:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:38:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:38:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:38:48,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 235 [2023-01-28 00:38:48,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 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) [2023-01-28 00:38:48,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:48,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 235 [2023-01-28 00:38:48,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:49,128 INFO L130 PetriNetUnfolder]: 9382/13573 cut-off events. [2023-01-28 00:38:49,128 INFO L131 PetriNetUnfolder]: For 28075/28446 co-relation queries the response was YES. [2023-01-28 00:38:49,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13573 events. 9382/13573 cut-off events. For 28075/28446 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 79275 event pairs, 2694 based on Foata normal form. 587/13660 useless extension candidates. Maximal degree in co-relation 50727. Up to 10005 conditions per place. [2023-01-28 00:38:49,322 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 53 selfloop transitions, 5 changer transitions 25/94 dead transitions. [2023-01-28 00:38:49,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 738 flow [2023-01-28 00:38:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:38:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:38:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-01-28 00:38:49,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505531914893617 [2023-01-28 00:38:49,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-01-28 00:38:49,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-01-28 00:38:49,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:49,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-01-28 00:38:49,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:49,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:49,336 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:49,336 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 308 flow. Second operand 5 states and 594 transitions. [2023-01-28 00:38:49,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 738 flow [2023-01-28 00:38:49,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 728 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-28 00:38:49,668 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 361 flow [2023-01-28 00:38:49,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-01-28 00:38:49,668 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-01-28 00:38:49,668 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 361 flow [2023-01-28 00:38:49,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 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) [2023-01-28 00:38:49,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:49,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:38:49,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:49,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1592797087, now seen corresponding path program 1 times [2023-01-28 00:38:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:49,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048790980] [2023-01-28 00:38:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:49,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:49,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048790980] [2023-01-28 00:38:49,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048790980] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:49,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:49,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:38:49,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079882030] [2023-01-28 00:38:49,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:38:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:38:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:38:49,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 00:38:49,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:49,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:49,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 00:38:49,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:51,018 INFO L130 PetriNetUnfolder]: 9150/13312 cut-off events. [2023-01-28 00:38:51,018 INFO L131 PetriNetUnfolder]: For 29963/30194 co-relation queries the response was YES. [2023-01-28 00:38:51,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52731 conditions, 13312 events. 9150/13312 cut-off events. For 29963/30194 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 77837 event pairs, 1727 based on Foata normal form. 504/13434 useless extension candidates. Maximal degree in co-relation 52709. Up to 8735 conditions per place. [2023-01-28 00:38:51,092 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 63 selfloop transitions, 19 changer transitions 22/115 dead transitions. [2023-01-28 00:38:51,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 115 transitions, 958 flow [2023-01-28 00:38:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:38:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:38:51,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 724 transitions. [2023-01-28 00:38:51,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134751773049645 [2023-01-28 00:38:51,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 724 transitions. [2023-01-28 00:38:51,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 724 transitions. [2023-01-28 00:38:51,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:51,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 724 transitions. [2023-01-28 00:38:51,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.66666666666667) internal successors, (724), 6 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:51,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:51,098 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:51,098 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 361 flow. Second operand 6 states and 724 transitions. [2023-01-28 00:38:51,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 115 transitions, 958 flow [2023-01-28 00:38:51,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 115 transitions, 949 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 00:38:51,203 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 525 flow [2023-01-28 00:38:51,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-01-28 00:38:51,204 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-01-28 00:38:51,204 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 525 flow [2023-01-28 00:38:51,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:51,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:51,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:51,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:38:51,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:51,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:51,205 INFO L85 PathProgramCache]: Analyzing trace with hash -65965793, now seen corresponding path program 2 times [2023-01-28 00:38:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114837917] [2023-01-28 00:38:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:51,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:51,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114837917] [2023-01-28 00:38:51,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114837917] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:51,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:51,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:38:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611540899] [2023-01-28 00:38:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:51,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:38:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:51,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:38:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:38:51,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 00:38:51,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:51,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:51,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 00:38:51,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:52,879 INFO L130 PetriNetUnfolder]: 9194/13338 cut-off events. [2023-01-28 00:38:52,880 INFO L131 PetriNetUnfolder]: For 44857/45303 co-relation queries the response was YES. [2023-01-28 00:38:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57191 conditions, 13338 events. 9194/13338 cut-off events. For 44857/45303 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 77005 event pairs, 1933 based on Foata normal form. 730/13700 useless extension candidates. Maximal degree in co-relation 57166. Up to 8803 conditions per place. [2023-01-28 00:38:52,959 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 65 selfloop transitions, 24 changer transitions 31/131 dead transitions. [2023-01-28 00:38:52,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 131 transitions, 1254 flow [2023-01-28 00:38:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:38:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:38:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2023-01-28 00:38:52,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2023-01-28 00:38:52,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2023-01-28 00:38:52,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2023-01-28 00:38:52,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:52,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2023-01-28 00:38:52,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:52,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:52,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:52,965 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 525 flow. Second operand 7 states and 819 transitions. [2023-01-28 00:38:52,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 131 transitions, 1254 flow [2023-01-28 00:38:53,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1219 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 00:38:53,194 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 682 flow [2023-01-28 00:38:53,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-01-28 00:38:53,195 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2023-01-28 00:38:53,195 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 682 flow [2023-01-28 00:38:53,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:53,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:53,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:53,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:38:53,196 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:53,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:53,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1594971830, now seen corresponding path program 1 times [2023-01-28 00:38:53,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:53,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303499585] [2023-01-28 00:38:53,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:53,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:53,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:53,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303499585] [2023-01-28 00:38:53,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303499585] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:53,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:53,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:38:53,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909600444] [2023-01-28 00:38:53,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:53,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:38:53,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:53,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:38:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:38:53,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 00:38:53,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:53,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:53,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 00:38:53,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:55,126 INFO L130 PetriNetUnfolder]: 12828/17645 cut-off events. [2023-01-28 00:38:55,126 INFO L131 PetriNetUnfolder]: For 68483/68483 co-relation queries the response was YES. [2023-01-28 00:38:55,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78657 conditions, 17645 events. 12828/17645 cut-off events. For 68483/68483 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 92012 event pairs, 1231 based on Foata normal form. 476/18121 useless extension candidates. Maximal degree in co-relation 78629. Up to 10497 conditions per place. [2023-01-28 00:38:55,230 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 100 selfloop transitions, 53 changer transitions 46/199 dead transitions. [2023-01-28 00:38:55,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 199 transitions, 1999 flow [2023-01-28 00:38:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 00:38:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 00:38:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 892 transitions. [2023-01-28 00:38:55,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474468085106383 [2023-01-28 00:38:55,232 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 892 transitions. [2023-01-28 00:38:55,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 892 transitions. [2023-01-28 00:38:55,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:55,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 892 transitions. [2023-01-28 00:38:55,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.5) internal successors, (892), 8 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:55,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:55,236 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:55,236 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 682 flow. Second operand 8 states and 892 transitions. [2023-01-28 00:38:55,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 199 transitions, 1999 flow [2023-01-28 00:38:55,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 199 transitions, 1967 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 00:38:55,519 INFO L231 Difference]: Finished difference. Result has 71 places, 100 transitions, 1233 flow [2023-01-28 00:38:55,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1233, PETRI_PLACES=71, PETRI_TRANSITIONS=100} [2023-01-28 00:38:55,520 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-01-28 00:38:55,520 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 100 transitions, 1233 flow [2023-01-28 00:38:55,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:55,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:55,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:55,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:38:55,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:55,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2145388558, now seen corresponding path program 1 times [2023-01-28 00:38:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:55,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653954524] [2023-01-28 00:38:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:55,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:56,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653954524] [2023-01-28 00:38:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653954524] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:56,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:56,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:38:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146290319] [2023-01-28 00:38:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:56,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:38:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:38:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:38:56,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-01-28 00:38:56,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 100 transitions, 1233 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:56,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:56,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-01-28 00:38:56,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:57,762 INFO L130 PetriNetUnfolder]: 10058/14406 cut-off events. [2023-01-28 00:38:57,762 INFO L131 PetriNetUnfolder]: For 107839/108560 co-relation queries the response was YES. [2023-01-28 00:38:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79820 conditions, 14406 events. 10058/14406 cut-off events. For 107839/108560 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 82075 event pairs, 1558 based on Foata normal form. 670/14589 useless extension candidates. Maximal degree in co-relation 79787. Up to 9865 conditions per place. [2023-01-28 00:38:57,884 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 24 changer transitions 24/162 dead transitions. [2023-01-28 00:38:57,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 2053 flow [2023-01-28 00:38:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:38:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:38:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 803 transitions. [2023-01-28 00:38:57,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48814589665653496 [2023-01-28 00:38:57,887 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 803 transitions. [2023-01-28 00:38:57,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 803 transitions. [2023-01-28 00:38:57,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:38:57,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 803 transitions. [2023-01-28 00:38:57,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:57,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:57,893 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:57,893 INFO L175 Difference]: Start difference. First operand has 71 places, 100 transitions, 1233 flow. Second operand 7 states and 803 transitions. [2023-01-28 00:38:57,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 2053 flow [2023-01-28 00:38:58,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 162 transitions, 2032 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 00:38:58,042 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 1368 flow [2023-01-28 00:38:58,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1368, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2023-01-28 00:38:58,043 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2023-01-28 00:38:58,043 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 1368 flow [2023-01-28 00:38:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:58,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:38:58,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:38:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:38:58,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:38:58,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:38:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2133723940, now seen corresponding path program 1 times [2023-01-28 00:38:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:38:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445853609] [2023-01-28 00:38:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:38:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:38:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:38:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:38:58,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:38:58,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445853609] [2023-01-28 00:38:58,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445853609] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:38:58,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:38:58,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:38:58,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803819026] [2023-01-28 00:38:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:38:58,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:38:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:38:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:38:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:38:58,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 00:38:58,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 1368 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:38:58,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:38:58,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 00:38:58,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:38:59,909 INFO L130 PetriNetUnfolder]: 10645/15218 cut-off events. [2023-01-28 00:38:59,910 INFO L131 PetriNetUnfolder]: For 139048/139812 co-relation queries the response was YES. [2023-01-28 00:38:59,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88802 conditions, 15218 events. 10645/15218 cut-off events. For 139048/139812 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 86681 event pairs, 2063 based on Foata normal form. 711/15519 useless extension candidates. Maximal degree in co-relation 88764. Up to 10143 conditions per place. [2023-01-28 00:39:00,002 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 92 selfloop transitions, 39 changer transitions 12/165 dead transitions. [2023-01-28 00:39:00,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 165 transitions, 2222 flow [2023-01-28 00:39:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:39:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:39:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 721 transitions. [2023-01-28 00:39:00,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113475177304965 [2023-01-28 00:39:00,004 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 721 transitions. [2023-01-28 00:39:00,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 721 transitions. [2023-01-28 00:39:00,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:00,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 721 transitions. [2023-01-28 00:39:00,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:00,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:00,008 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:00,008 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 1368 flow. Second operand 6 states and 721 transitions. [2023-01-28 00:39:00,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 165 transitions, 2222 flow [2023-01-28 00:39:00,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 2160 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-01-28 00:39:00,326 INFO L231 Difference]: Finished difference. Result has 76 places, 115 transitions, 1612 flow [2023-01-28 00:39:00,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1612, PETRI_PLACES=76, PETRI_TRANSITIONS=115} [2023-01-28 00:39:00,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-01-28 00:39:00,326 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 115 transitions, 1612 flow [2023-01-28 00:39:00,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:00,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:00,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:39:00,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:00,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash -664159116, now seen corresponding path program 2 times [2023-01-28 00:39:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:00,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360139478] [2023-01-28 00:39:00,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:00,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360139478] [2023-01-28 00:39:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360139478] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:00,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:39:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288606006] [2023-01-28 00:39:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:00,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:39:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:39:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:39:00,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 00:39:00,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 115 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:00,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:00,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 00:39:00,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:02,241 INFO L130 PetriNetUnfolder]: 11733/16834 cut-off events. [2023-01-28 00:39:02,241 INFO L131 PetriNetUnfolder]: For 160757/161571 co-relation queries the response was YES. [2023-01-28 00:39:02,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100140 conditions, 16834 events. 11733/16834 cut-off events. For 160757/161571 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 98555 event pairs, 2125 based on Foata normal form. 860/17176 useless extension candidates. Maximal degree in co-relation 100103. Up to 8738 conditions per place. [2023-01-28 00:39:02,369 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 91 selfloop transitions, 52 changer transitions 31/196 dead transitions. [2023-01-28 00:39:02,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 196 transitions, 2780 flow [2023-01-28 00:39:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 00:39:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 00:39:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 938 transitions. [2023-01-28 00:39:02,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498936170212766 [2023-01-28 00:39:02,371 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 938 transitions. [2023-01-28 00:39:02,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 938 transitions. [2023-01-28 00:39:02,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:02,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 938 transitions. [2023-01-28 00:39:02,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.25) internal successors, (938), 8 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:02,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:02,375 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:02,375 INFO L175 Difference]: Start difference. First operand has 76 places, 115 transitions, 1612 flow. Second operand 8 states and 938 transitions. [2023-01-28 00:39:02,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 196 transitions, 2780 flow [2023-01-28 00:39:02,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 196 transitions, 2661 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-01-28 00:39:02,585 INFO L231 Difference]: Finished difference. Result has 83 places, 123 transitions, 1855 flow [2023-01-28 00:39:02,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1855, PETRI_PLACES=83, PETRI_TRANSITIONS=123} [2023-01-28 00:39:02,585 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2023-01-28 00:39:02,585 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 123 transitions, 1855 flow [2023-01-28 00:39:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:02,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:02,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:39:02,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:02,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1720442247, now seen corresponding path program 1 times [2023-01-28 00:39:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502514863] [2023-01-28 00:39:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:02,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502514863] [2023-01-28 00:39:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502514863] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:02,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:02,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:39:02,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873126025] [2023-01-28 00:39:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:02,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:39:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:39:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:39:02,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 00:39:02,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 123 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:02,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:03,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 00:39:03,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:04,674 INFO L130 PetriNetUnfolder]: 12089/17344 cut-off events. [2023-01-28 00:39:04,674 INFO L131 PetriNetUnfolder]: For 199308/200050 co-relation queries the response was YES. [2023-01-28 00:39:04,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108990 conditions, 17344 events. 12089/17344 cut-off events. For 199308/200050 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 102257 event pairs, 2223 based on Foata normal form. 561/17297 useless extension candidates. Maximal degree in co-relation 108949. Up to 11405 conditions per place. [2023-01-28 00:39:04,811 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 102 selfloop transitions, 44 changer transitions 10/178 dead transitions. [2023-01-28 00:39:04,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 178 transitions, 2686 flow [2023-01-28 00:39:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:39:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:39:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2023-01-28 00:39:04,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014184397163121 [2023-01-28 00:39:04,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2023-01-28 00:39:04,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2023-01-28 00:39:04,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:04,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2023-01-28 00:39:04,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:04,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:04,834 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:04,834 INFO L175 Difference]: Start difference. First operand has 83 places, 123 transitions, 1855 flow. Second operand 6 states and 707 transitions. [2023-01-28 00:39:04,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 178 transitions, 2686 flow [2023-01-28 00:39:05,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 2581 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-01-28 00:39:05,292 INFO L231 Difference]: Finished difference. Result has 81 places, 131 transitions, 2029 flow [2023-01-28 00:39:05,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2029, PETRI_PLACES=81, PETRI_TRANSITIONS=131} [2023-01-28 00:39:05,293 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-01-28 00:39:05,293 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 131 transitions, 2029 flow [2023-01-28 00:39:05,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:05,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:05,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:05,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:39:05,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:05,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash 874775161, now seen corresponding path program 2 times [2023-01-28 00:39:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:05,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515170082] [2023-01-28 00:39:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:05,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:05,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515170082] [2023-01-28 00:39:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515170082] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:05,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:39:05,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864039126] [2023-01-28 00:39:05,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:39:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:39:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:39:05,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 235 [2023-01-28 00:39:05,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 131 transitions, 2029 flow. Second operand has 8 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:05,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:05,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 235 [2023-01-28 00:39:05,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:08,185 INFO L130 PetriNetUnfolder]: 16353/22510 cut-off events. [2023-01-28 00:39:08,185 INFO L131 PetriNetUnfolder]: For 209669/209669 co-relation queries the response was YES. [2023-01-28 00:39:08,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134094 conditions, 22510 events. 16353/22510 cut-off events. For 209669/209669 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 122392 event pairs, 1419 based on Foata normal form. 240/22750 useless extension candidates. Maximal degree in co-relation 134054. Up to 12981 conditions per place. [2023-01-28 00:39:08,370 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 127 selfloop transitions, 127 changer transitions 32/286 dead transitions. [2023-01-28 00:39:08,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 286 transitions, 4158 flow [2023-01-28 00:39:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 00:39:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 00:39:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1096 transitions. [2023-01-28 00:39:08,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46638297872340423 [2023-01-28 00:39:08,373 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1096 transitions. [2023-01-28 00:39:08,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1096 transitions. [2023-01-28 00:39:08,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:08,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1096 transitions. [2023-01-28 00:39:08,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:08,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:08,378 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:08,378 INFO L175 Difference]: Start difference. First operand has 81 places, 131 transitions, 2029 flow. Second operand 10 states and 1096 transitions. [2023-01-28 00:39:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 286 transitions, 4158 flow [2023-01-28 00:39:08,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 4048 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-01-28 00:39:08,775 INFO L231 Difference]: Finished difference. Result has 93 places, 189 transitions, 3325 flow [2023-01-28 00:39:08,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=93, PETRI_TRANSITIONS=189} [2023-01-28 00:39:08,776 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2023-01-28 00:39:08,776 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 189 transitions, 3325 flow [2023-01-28 00:39:08,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.25) internal successors, (778), 8 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:08,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:08,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 00:39:08,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:08,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1408889429, now seen corresponding path program 3 times [2023-01-28 00:39:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322245335] [2023-01-28 00:39:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:09,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:09,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322245335] [2023-01-28 00:39:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322245335] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:39:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697110040] [2023-01-28 00:39:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:09,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:39:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:09,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:39:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:39:09,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 00:39:09,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 189 transitions, 3325 flow. Second operand has 8 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:09,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:09,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 00:39:09,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:12,490 INFO L130 PetriNetUnfolder]: 16829/23206 cut-off events. [2023-01-28 00:39:12,490 INFO L131 PetriNetUnfolder]: For 304390/304390 co-relation queries the response was YES. [2023-01-28 00:39:12,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155947 conditions, 23206 events. 16829/23206 cut-off events. For 304390/304390 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 127046 event pairs, 2161 based on Foata normal form. 240/23446 useless extension candidates. Maximal degree in co-relation 155900. Up to 16515 conditions per place. [2023-01-28 00:39:12,784 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 212 selfloop transitions, 82 changer transitions 28/322 dead transitions. [2023-01-28 00:39:12,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 322 transitions, 5619 flow [2023-01-28 00:39:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 00:39:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 00:39:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 986 transitions. [2023-01-28 00:39:12,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466193853427896 [2023-01-28 00:39:12,790 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 986 transitions. [2023-01-28 00:39:12,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 986 transitions. [2023-01-28 00:39:12,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:12,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 986 transitions. [2023-01-28 00:39:12,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.55555555555556) internal successors, (986), 9 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:12,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:12,794 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:12,794 INFO L175 Difference]: Start difference. First operand has 93 places, 189 transitions, 3325 flow. Second operand 9 states and 986 transitions. [2023-01-28 00:39:12,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 322 transitions, 5619 flow [2023-01-28 00:39:13,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 322 transitions, 5296 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-01-28 00:39:13,735 INFO L231 Difference]: Finished difference. Result has 100 places, 216 transitions, 3843 flow [2023-01-28 00:39:13,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3843, PETRI_PLACES=100, PETRI_TRANSITIONS=216} [2023-01-28 00:39:13,735 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-01-28 00:39:13,735 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 216 transitions, 3843 flow [2023-01-28 00:39:13,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.25) internal successors, (786), 8 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:13,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:13,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 00:39:13,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:13,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash -922116229, now seen corresponding path program 4 times [2023-01-28 00:39:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715992659] [2023-01-28 00:39:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:14,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:14,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715992659] [2023-01-28 00:39:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715992659] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:39:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704614621] [2023-01-28 00:39:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:39:14,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:39:14,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:39:14,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 235 [2023-01-28 00:39:14,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 216 transitions, 3843 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:14,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:14,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 235 [2023-01-28 00:39:14,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:17,178 INFO L130 PetriNetUnfolder]: 16768/24302 cut-off events. [2023-01-28 00:39:17,179 INFO L131 PetriNetUnfolder]: For 378924/380345 co-relation queries the response was YES. [2023-01-28 00:39:17,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174542 conditions, 24302 events. 16768/24302 cut-off events. For 378924/380345 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 154896 event pairs, 2481 based on Foata normal form. 686/23894 useless extension candidates. Maximal degree in co-relation 174490. Up to 12191 conditions per place. [2023-01-28 00:39:17,401 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 147 selfloop transitions, 74 changer transitions 12/289 dead transitions. [2023-01-28 00:39:17,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 289 transitions, 5281 flow [2023-01-28 00:39:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:39:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:39:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 817 transitions. [2023-01-28 00:39:17,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966565349544073 [2023-01-28 00:39:17,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 817 transitions. [2023-01-28 00:39:17,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 817 transitions. [2023-01-28 00:39:17,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:17,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 817 transitions. [2023-01-28 00:39:17,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.71428571428571) internal successors, (817), 7 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:17,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:17,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:17,407 INFO L175 Difference]: Start difference. First operand has 100 places, 216 transitions, 3843 flow. Second operand 7 states and 817 transitions. [2023-01-28 00:39:17,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 289 transitions, 5281 flow [2023-01-28 00:39:18,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 289 transitions, 5023 flow, removed 77 selfloop flow, removed 8 redundant places. [2023-01-28 00:39:18,199 INFO L231 Difference]: Finished difference. Result has 99 places, 238 transitions, 4341 flow [2023-01-28 00:39:18,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4341, PETRI_PLACES=99, PETRI_TRANSITIONS=238} [2023-01-28 00:39:18,200 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2023-01-28 00:39:18,200 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 238 transitions, 4341 flow [2023-01-28 00:39:18,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:18,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:18,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:18,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 00:39:18,201 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:18,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash 628459863, now seen corresponding path program 5 times [2023-01-28 00:39:18,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:18,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904605744] [2023-01-28 00:39:18,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:18,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904605744] [2023-01-28 00:39:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904605744] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:18,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:39:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344323113] [2023-01-28 00:39:18,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:39:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:39:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:39:18,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2023-01-28 00:39:18,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 238 transitions, 4341 flow. Second operand has 8 states, 8 states have (on average 106.125) internal successors, (849), 8 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:18,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:18,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2023-01-28 00:39:18,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:21,750 INFO L130 PetriNetUnfolder]: 17220/25147 cut-off events. [2023-01-28 00:39:21,750 INFO L131 PetriNetUnfolder]: For 374028/375819 co-relation queries the response was YES. [2023-01-28 00:39:21,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179110 conditions, 25147 events. 17220/25147 cut-off events. For 374028/375819 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 162322 event pairs, 2996 based on Foata normal form. 883/24979 useless extension candidates. Maximal degree in co-relation 179060. Up to 12288 conditions per place. [2023-01-28 00:39:22,080 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 180 selfloop transitions, 104 changer transitions 23/363 dead transitions. [2023-01-28 00:39:22,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 363 transitions, 6939 flow [2023-01-28 00:39:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 00:39:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 00:39:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 918 transitions. [2023-01-28 00:39:22,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48829787234042554 [2023-01-28 00:39:22,083 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 918 transitions. [2023-01-28 00:39:22,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 918 transitions. [2023-01-28 00:39:22,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:22,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 918 transitions. [2023-01-28 00:39:22,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.75) internal successors, (918), 8 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:22,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:22,086 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:22,086 INFO L175 Difference]: Start difference. First operand has 99 places, 238 transitions, 4341 flow. Second operand 8 states and 918 transitions. [2023-01-28 00:39:22,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 363 transitions, 6939 flow [2023-01-28 00:39:22,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 363 transitions, 6920 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-28 00:39:22,718 INFO L231 Difference]: Finished difference. Result has 108 places, 278 transitions, 5707 flow [2023-01-28 00:39:22,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5707, PETRI_PLACES=108, PETRI_TRANSITIONS=278} [2023-01-28 00:39:22,718 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-01-28 00:39:22,718 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 278 transitions, 5707 flow [2023-01-28 00:39:22,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.125) internal successors, (849), 8 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:22,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:22,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 00:39:22,719 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:22,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash 935965889, now seen corresponding path program 1 times [2023-01-28 00:39:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372819315] [2023-01-28 00:39:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:22,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372819315] [2023-01-28 00:39:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372819315] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:22,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:22,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:39:22,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036499448] [2023-01-28 00:39:22,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:22,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:39:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:22,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:39:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:39:22,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-01-28 00:39:22,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 278 transitions, 5707 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:22,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:22,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-01-28 00:39:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:27,766 INFO L130 PetriNetUnfolder]: 24739/35426 cut-off events. [2023-01-28 00:39:27,766 INFO L131 PetriNetUnfolder]: For 678510/681890 co-relation queries the response was YES. [2023-01-28 00:39:27,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267939 conditions, 35426 events. 24739/35426 cut-off events. For 678510/681890 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 232939 event pairs, 4002 based on Foata normal form. 2053/36764 useless extension candidates. Maximal degree in co-relation 267884. Up to 17214 conditions per place. [2023-01-28 00:39:28,026 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 314 selfloop transitions, 3 changer transitions 163/512 dead transitions. [2023-01-28 00:39:28,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 512 transitions, 11593 flow [2023-01-28 00:39:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:39:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:39:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-01-28 00:39:28,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-01-28 00:39:28,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-01-28 00:39:28,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-01-28 00:39:28,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:28,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-01-28 00:39:28,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:28,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:28,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:28,032 INFO L175 Difference]: Start difference. First operand has 108 places, 278 transitions, 5707 flow. Second operand 5 states and 600 transitions. [2023-01-28 00:39:28,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 512 transitions, 11593 flow [2023-01-28 00:39:29,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 512 transitions, 11552 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-01-28 00:39:29,228 INFO L231 Difference]: Finished difference. Result has 110 places, 245 transitions, 4938 flow [2023-01-28 00:39:29,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4938, PETRI_PLACES=110, PETRI_TRANSITIONS=245} [2023-01-28 00:39:29,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2023-01-28 00:39:29,228 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 245 transitions, 4938 flow [2023-01-28 00:39:29,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:29,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:29,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:29,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 00:39:29,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:29,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -938231587, now seen corresponding path program 2 times [2023-01-28 00:39:29,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:29,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940721514] [2023-01-28 00:39:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:29,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:29,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940721514] [2023-01-28 00:39:29,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940721514] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:29,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:39:29,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580020449] [2023-01-28 00:39:29,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:29,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:39:29,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:29,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:39:29,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:39:29,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 00:39:29,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 245 transitions, 4938 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:29,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:29,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 00:39:29,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:31,905 INFO L130 PetriNetUnfolder]: 12394/18504 cut-off events. [2023-01-28 00:39:31,906 INFO L131 PetriNetUnfolder]: For 424484/428977 co-relation queries the response was YES. [2023-01-28 00:39:31,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140220 conditions, 18504 events. 12394/18504 cut-off events. For 424484/428977 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 123562 event pairs, 3031 based on Foata normal form. 1580/19204 useless extension candidates. Maximal degree in co-relation 140164. Up to 15125 conditions per place. [2023-01-28 00:39:32,005 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 252 selfloop transitions, 5 changer transitions 2/317 dead transitions. [2023-01-28 00:39:32,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 317 transitions, 6973 flow [2023-01-28 00:39:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:39:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:39:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-01-28 00:39:32,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219858156028369 [2023-01-28 00:39:32,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-01-28 00:39:32,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-01-28 00:39:32,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:32,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-01-28 00:39:32,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:32,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:32,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:32,008 INFO L175 Difference]: Start difference. First operand has 110 places, 245 transitions, 4938 flow. Second operand 3 states and 368 transitions. [2023-01-28 00:39:32,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 317 transitions, 6973 flow [2023-01-28 00:39:32,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 317 transitions, 6823 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-01-28 00:39:32,359 INFO L231 Difference]: Finished difference. Result has 108 places, 225 transitions, 4323 flow [2023-01-28 00:39:32,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4323, PETRI_PLACES=108, PETRI_TRANSITIONS=225} [2023-01-28 00:39:32,359 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-01-28 00:39:32,359 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 225 transitions, 4323 flow [2023-01-28 00:39:32,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:32,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:32,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:32,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 00:39:32,360 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:32,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 121380588, now seen corresponding path program 1 times [2023-01-28 00:39:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:32,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202676785] [2023-01-28 00:39:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:32,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202676785] [2023-01-28 00:39:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202676785] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:32,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:32,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:39:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883159594] [2023-01-28 00:39:32,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:32,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:39:32,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:39:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:39:32,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 00:39:32,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 225 transitions, 4323 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:32,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:32,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 00:39:32,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:33,833 INFO L130 PetriNetUnfolder]: 6157/9742 cut-off events. [2023-01-28 00:39:33,834 INFO L131 PetriNetUnfolder]: For 212581/214755 co-relation queries the response was YES. [2023-01-28 00:39:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76314 conditions, 9742 events. 6157/9742 cut-off events. For 212581/214755 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 63624 event pairs, 966 based on Foata normal form. 1284/10729 useless extension candidates. Maximal degree in co-relation 76259. Up to 4948 conditions per place. [2023-01-28 00:39:33,903 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 9 changer transitions 5/325 dead transitions. [2023-01-28 00:39:33,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 325 transitions, 7017 flow [2023-01-28 00:39:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:39:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:39:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-01-28 00:39:33,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2023-01-28 00:39:33,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-01-28 00:39:33,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-01-28 00:39:33,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:33,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-01-28 00:39:33,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:33,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:33,906 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:33,906 INFO L175 Difference]: Start difference. First operand has 108 places, 225 transitions, 4323 flow. Second operand 4 states and 492 transitions. [2023-01-28 00:39:33,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 325 transitions, 7017 flow [2023-01-28 00:39:34,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 325 transitions, 6711 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-01-28 00:39:34,062 INFO L231 Difference]: Finished difference. Result has 106 places, 189 transitions, 3402 flow [2023-01-28 00:39:34,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3402, PETRI_PLACES=106, PETRI_TRANSITIONS=189} [2023-01-28 00:39:34,063 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2023-01-28 00:39:34,063 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 3402 flow [2023-01-28 00:39:34,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:34,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:34,063 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] [2023-01-28 00:39:34,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 00:39:34,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:34,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2016177905, now seen corresponding path program 1 times [2023-01-28 00:39:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141685866] [2023-01-28 00:39:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:34,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141685866] [2023-01-28 00:39:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141685866] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:34,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:39:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453609496] [2023-01-28 00:39:34,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:34,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:39:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:34,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:39:34,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:39:34,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 235 [2023-01-28 00:39:34,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 3402 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:34,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:34,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 235 [2023-01-28 00:39:34,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:36,335 INFO L130 PetriNetUnfolder]: 10542/16361 cut-off events. [2023-01-28 00:39:36,335 INFO L131 PetriNetUnfolder]: For 248411/248411 co-relation queries the response was YES. [2023-01-28 00:39:36,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124570 conditions, 16361 events. 10542/16361 cut-off events. For 248411/248411 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 104732 event pairs, 2870 based on Foata normal form. 164/16525 useless extension candidates. Maximal degree in co-relation 124516. Up to 8324 conditions per place. [2023-01-28 00:39:36,419 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 135 selfloop transitions, 22 changer transitions 137/294 dead transitions. [2023-01-28 00:39:36,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 294 transitions, 5651 flow [2023-01-28 00:39:36,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:39:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:39:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2023-01-28 00:39:36,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46879432624113476 [2023-01-28 00:39:36,420 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2023-01-28 00:39:36,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2023-01-28 00:39:36,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:36,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2023-01-28 00:39:36,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:36,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:36,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:36,422 INFO L175 Difference]: Start difference. First operand has 106 places, 189 transitions, 3402 flow. Second operand 6 states and 661 transitions. [2023-01-28 00:39:36,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 294 transitions, 5651 flow [2023-01-28 00:39:36,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 294 transitions, 5617 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 00:39:36,632 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 2056 flow [2023-01-28 00:39:36,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2056, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-01-28 00:39:36,633 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2023-01-28 00:39:36,633 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 2056 flow [2023-01-28 00:39:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:36,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:36,633 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] [2023-01-28 00:39:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 00:39:36,633 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:36,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash -379899133, now seen corresponding path program 1 times [2023-01-28 00:39:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173515659] [2023-01-28 00:39:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:36,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173515659] [2023-01-28 00:39:36,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173515659] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:36,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:36,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 00:39:36,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478369039] [2023-01-28 00:39:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:39:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:39:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:39:36,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 00:39:36,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 2056 flow. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:36,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:36,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 00:39:36,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:37,603 INFO L130 PetriNetUnfolder]: 3876/6367 cut-off events. [2023-01-28 00:39:37,603 INFO L131 PetriNetUnfolder]: For 121114/122137 co-relation queries the response was YES. [2023-01-28 00:39:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48564 conditions, 6367 events. 3876/6367 cut-off events. For 121114/122137 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 41552 event pairs, 553 based on Foata normal form. 808/6973 useless extension candidates. Maximal degree in co-relation 48507. Up to 2934 conditions per place. [2023-01-28 00:39:37,636 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 163 selfloop transitions, 13 changer transitions 12/218 dead transitions. [2023-01-28 00:39:37,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 218 transitions, 4180 flow [2023-01-28 00:39:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:39:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:39:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2023-01-28 00:39:37,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225531914893617 [2023-01-28 00:39:37,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2023-01-28 00:39:37,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2023-01-28 00:39:37,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:37,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2023-01-28 00:39:37,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:37,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:37,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:37,639 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 2056 flow. Second operand 5 states and 614 transitions. [2023-01-28 00:39:37,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 218 transitions, 4180 flow [2023-01-28 00:39:37,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 218 transitions, 4022 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-01-28 00:39:37,813 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 1833 flow [2023-01-28 00:39:37,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1833, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2023-01-28 00:39:37,813 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-01-28 00:39:37,813 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 1833 flow [2023-01-28 00:39:37,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:37,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:37,814 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] [2023-01-28 00:39:37,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 00:39:37,814 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:37,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:37,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1934627257, now seen corresponding path program 1 times [2023-01-28 00:39:37,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:37,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933558860] [2023-01-28 00:39:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:37,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:37,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933558860] [2023-01-28 00:39:37,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933558860] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:37,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:37,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:39:37,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794698375] [2023-01-28 00:39:37,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:37,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:39:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:37,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:39:37,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:39:37,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 00:39:37,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 1833 flow. Second operand has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:37,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:37,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 00:39:37,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:38,592 INFO L130 PetriNetUnfolder]: 3559/5767 cut-off events. [2023-01-28 00:39:38,592 INFO L131 PetriNetUnfolder]: For 100137/101151 co-relation queries the response was YES. [2023-01-28 00:39:38,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44886 conditions, 5767 events. 3559/5767 cut-off events. For 100137/101151 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37160 event pairs, 506 based on Foata normal form. 504/6084 useless extension candidates. Maximal degree in co-relation 44831. Up to 2604 conditions per place. [2023-01-28 00:39:38,619 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 120 selfloop transitions, 17 changer transitions 51/209 dead transitions. [2023-01-28 00:39:38,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 209 transitions, 3871 flow [2023-01-28 00:39:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:39:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:39:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 723 transitions. [2023-01-28 00:39:38,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2023-01-28 00:39:38,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 723 transitions. [2023-01-28 00:39:38,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 723 transitions. [2023-01-28 00:39:38,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:38,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 723 transitions. [2023-01-28 00:39:38,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.5) internal successors, (723), 6 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:38,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:38,623 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:38,623 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 1833 flow. Second operand 6 states and 723 transitions. [2023-01-28 00:39:38,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 209 transitions, 3871 flow [2023-01-28 00:39:38,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 209 transitions, 3640 flow, removed 90 selfloop flow, removed 5 redundant places. [2023-01-28 00:39:38,962 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 1264 flow [2023-01-28 00:39:38,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1264, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2023-01-28 00:39:38,963 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-01-28 00:39:38,963 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 1264 flow [2023-01-28 00:39:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.5) internal successors, (675), 6 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:38,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:38,963 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] [2023-01-28 00:39:38,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 00:39:38,963 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:38,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash -465416219, now seen corresponding path program 1 times [2023-01-28 00:39:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169518306] [2023-01-28 00:39:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:39,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169518306] [2023-01-28 00:39:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169518306] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:39:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119329391] [2023-01-28 00:39:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:39,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 00:39:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 00:39:39,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 00:39:39,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 235 [2023-01-28 00:39:39,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 1264 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:39,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:39,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 235 [2023-01-28 00:39:39,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:39,725 INFO L130 PetriNetUnfolder]: 1596/2549 cut-off events. [2023-01-28 00:39:39,725 INFO L131 PetriNetUnfolder]: For 30300/30300 co-relation queries the response was YES. [2023-01-28 00:39:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18116 conditions, 2549 events. 1596/2549 cut-off events. For 30300/30300 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12224 event pairs, 243 based on Foata normal form. 1/2550 useless extension candidates. Maximal degree in co-relation 18067. Up to 1683 conditions per place. [2023-01-28 00:39:39,736 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 56 selfloop transitions, 9 changer transitions 109/174 dead transitions. [2023-01-28 00:39:39,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 174 transitions, 2655 flow [2023-01-28 00:39:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:39:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:39:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 736 transitions. [2023-01-28 00:39:39,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474164133738602 [2023-01-28 00:39:39,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 736 transitions. [2023-01-28 00:39:39,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 736 transitions. [2023-01-28 00:39:39,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:39,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 736 transitions. [2023-01-28 00:39:39,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 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) [2023-01-28 00:39:39,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:39,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:39,739 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 1264 flow. Second operand 7 states and 736 transitions. [2023-01-28 00:39:39,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 174 transitions, 2655 flow [2023-01-28 00:39:39,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 2184 flow, removed 148 selfloop flow, removed 20 redundant places. [2023-01-28 00:39:39,795 INFO L231 Difference]: Finished difference. Result has 97 places, 53 transitions, 526 flow [2023-01-28 00:39:39,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=97, PETRI_TRANSITIONS=53} [2023-01-28 00:39:39,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2023-01-28 00:39:39,795 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 53 transitions, 526 flow [2023-01-28 00:39:39,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:39,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:39,796 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] [2023-01-28 00:39:39,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 00:39:39,796 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:39,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1818452003, now seen corresponding path program 2 times [2023-01-28 00:39:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244943350] [2023-01-28 00:39:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:39:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:39:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:39:40,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244943350] [2023-01-28 00:39:40,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244943350] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:39:40,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:39:40,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 00:39:40,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28922042] [2023-01-28 00:39:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:39:40,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 00:39:40,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:39:40,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 00:39:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 00:39:40,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 235 [2023-01-28 00:39:40,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 53 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 98.11111111111111) internal successors, (883), 9 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:40,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:39:40,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 235 [2023-01-28 00:39:40,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:39:40,901 INFO L130 PetriNetUnfolder]: 491/889 cut-off events. [2023-01-28 00:39:40,901 INFO L131 PetriNetUnfolder]: For 5704/5704 co-relation queries the response was YES. [2023-01-28 00:39:40,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 889 events. 491/889 cut-off events. For 5704/5704 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3999 event pairs, 84 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 4874. Up to 334 conditions per place. [2023-01-28 00:39:40,905 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 71 selfloop transitions, 13 changer transitions 50/134 dead transitions. [2023-01-28 00:39:40,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 134 transitions, 1316 flow [2023-01-28 00:39:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 00:39:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 00:39:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 938 transitions. [2023-01-28 00:39:40,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44349881796690305 [2023-01-28 00:39:40,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 938 transitions. [2023-01-28 00:39:40,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 938 transitions. [2023-01-28 00:39:40,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:39:40,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 938 transitions. [2023-01-28 00:39:40,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.22222222222223) internal successors, (938), 9 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:40,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:40,909 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:40,909 INFO L175 Difference]: Start difference. First operand has 97 places, 53 transitions, 526 flow. Second operand 9 states and 938 transitions. [2023-01-28 00:39:40,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 134 transitions, 1316 flow [2023-01-28 00:39:40,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 1156 flow, removed 20 selfloop flow, removed 22 redundant places. [2023-01-28 00:39:40,919 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 417 flow [2023-01-28 00:39:40,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-01-28 00:39:40,919 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2023-01-28 00:39:40,919 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 417 flow [2023-01-28 00:39:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.11111111111111) internal successors, (883), 9 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:39:40,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:39:40,919 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] [2023-01-28 00:39:40,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 00:39:40,920 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:39:40,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:39:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1875746827, now seen corresponding path program 3 times [2023-01-28 00:39:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:39:40,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728693309] [2023-01-28 00:39:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:39:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:39:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:39:40,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 00:39:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:39:40,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 00:39:40,991 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 00:39:40,992 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-01-28 00:39:40,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-01-28 00:39:40,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-01-28 00:39:40,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-01-28 00:39:40,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-01-28 00:39:40,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-01-28 00:39:40,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-01-28 00:39:40,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 00:39:40,994 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:39:40,998 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:39:40,998 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:39:41,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:39:41 BasicIcfg [2023-01-28 00:39:41,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:39:41,067 INFO L158 Benchmark]: Toolchain (without parser) took 62990.95ms. Allocated memory was 325.1MB in the beginning and 10.2GB in the end (delta: 9.9GB). Free memory was 284.4MB in the beginning and 7.2GB in the end (delta: -7.0GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-01-28 00:39:41,067 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 325.1MB. Free memory is still 273.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:39:41,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.48ms. Allocated memory is still 325.1MB. Free memory was 284.0MB in the beginning and 260.5MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 00:39:41,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.93ms. Allocated memory is still 325.1MB. Free memory was 260.5MB in the beginning and 257.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:39:41,068 INFO L158 Benchmark]: Boogie Preprocessor took 30.64ms. Allocated memory is still 325.1MB. Free memory was 257.6MB in the beginning and 255.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:39:41,068 INFO L158 Benchmark]: RCFGBuilder took 625.56ms. Allocated memory was 325.1MB in the beginning and 484.4MB in the end (delta: 159.4MB). Free memory was 255.9MB in the beginning and 448.3MB in the end (delta: -192.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.0GB. [2023-01-28 00:39:41,068 INFO L158 Benchmark]: TraceAbstraction took 61849.58ms. Allocated memory was 484.4MB in the beginning and 10.2GB in the end (delta: 9.7GB). Free memory was 447.3MB in the beginning and 7.2GB in the end (delta: -6.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-01-28 00:39:41,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 325.1MB. Free memory is still 273.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 425.48ms. Allocated memory is still 325.1MB. Free memory was 284.0MB in the beginning and 260.5MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.93ms. Allocated memory is still 325.1MB. Free memory was 260.5MB in the beginning and 257.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.64ms. Allocated memory is still 325.1MB. Free memory was 257.6MB in the beginning and 255.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 625.56ms. Allocated memory was 325.1MB in the beginning and 484.4MB in the end (delta: 159.4MB). Free memory was 255.9MB in the beginning and 448.3MB in the end (delta: -192.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.0GB. * TraceAbstraction took 61849.58ms. Allocated memory was 484.4MB in the beginning and 10.2GB in the end (delta: 9.7GB). Free memory was 447.3MB in the beginning and 7.2GB in the end (delta: -6.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 136 PlacesBefore, 44 PlacesAfterwards, 125 TransitionsBefore, 32 TransitionsAfterwards, 2986 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 8489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3584, independent: 3350, independent conditional: 0, independent unconditional: 3350, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1511, independent conditional: 0, independent unconditional: 1511, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3584, independent: 1839, independent conditional: 0, independent unconditional: 1839, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; [L725] 0 _Bool y$flush_delayed; [L726] 0 int y$mem_tmp; [L727] 0 _Bool y$r_buff0_thd0; [L728] 0 _Bool y$r_buff0_thd1; [L729] 0 _Bool y$r_buff0_thd2; [L730] 0 _Bool y$r_buff0_thd3; [L731] 0 _Bool y$r_buff0_thd4; [L732] 0 _Bool y$r_buff1_thd0; [L733] 0 _Bool y$r_buff1_thd1; [L734] 0 _Bool y$r_buff1_thd2; [L735] 0 _Bool y$r_buff1_thd3; [L736] 0 _Bool y$r_buff1_thd4; [L737] 0 _Bool y$read_delayed; [L738] 0 int *y$read_delayed_var; [L739] 0 int y$w_buff0; [L740] 0 _Bool y$w_buff0_used; [L741] 0 int y$w_buff1; [L742] 0 _Bool y$w_buff1_used; [L744] 0 int z = 0; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L846] 0 pthread_t t577; [L847] FCALL, FORK 0 pthread_create(&t577, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t577, ((void *)0), P0, ((void *)0))=-2, t577={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L848] 0 pthread_t t578; [L849] FCALL, FORK 0 pthread_create(&t578, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t578, ((void *)0), P1, ((void *)0))=-1, t577={5:0}, t578={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L850] 0 pthread_t t579; [L851] FCALL, FORK 0 pthread_create(&t579, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t579, ((void *)0), P2, ((void *)0))=0, t577={5:0}, t578={6:0}, t579={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L852] 0 pthread_t t580; [L853] FCALL, FORK 0 pthread_create(&t580, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t580, ((void *)0), P3, ((void *)0))=1, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L785] 3 y$w_buff1 = y$w_buff0 [L786] 3 y$w_buff0 = 2 [L787] 3 y$w_buff1_used = y$w_buff0_used [L788] 3 y$w_buff0_used = (_Bool)1 [L789] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L789] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L790] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L791] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L792] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L793] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L794] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L795] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L798] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L818] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L821] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L750] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L801] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L802] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L803] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L804] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L805] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L808] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L810] 3 return 0; [L824] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L825] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L826] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L827] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L828] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L771] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L772] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L773] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L774] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L775] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L778] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L780] 2 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L860] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L861] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L862] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L863] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 y$flush_delayed = weak$$choice2 [L869] 0 y$mem_tmp = y [L870] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L871] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L872] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L873] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L874] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L876] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] 0 y = y$flush_delayed ? y$mem_tmp : y [L879] 0 y$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 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: 61.7s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 49.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1056 mSDsluCounter, 353 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 243 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3872 IncrementalHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 110 mSDtfsCounter, 3872 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5707occurred in iteration=15, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 393 ConstructedInterpolants, 0 QuantifiedInterpolants, 4588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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 RESULT: Ultimate proved your program to be incorrect! [2023-01-28 00:39:41,097 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...