/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:08:46,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:08:46,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:08:46,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:08:46,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:08:46,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:08:46,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:08:46,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:08:46,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:08:46,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:08:46,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:08:46,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:08:46,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:08:46,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:08:46,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:08:46,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:08:46,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:08:46,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:08:46,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:08:46,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:08:46,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:08:46,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:08:46,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:08:46,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:08:46,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:08:46,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:08:46,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:08:46,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:08:46,407 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 [2023-01-27 23:08:46,425 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:08:46,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:08:46,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:08:46,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:08:46,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:08:46,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:08:46,427 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:08:46,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:08:46,427 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:08:46,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:08:46,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:08:46,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:08:46,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:08:46,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:08:46,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:08:46,428 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:08:46,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:08:46,429 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:08:46,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:08:46,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:08:46,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:08:46,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:08:46,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:08:46,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:08:46,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:08:46,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:08:46,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:08:46,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:08:46,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:08:46,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:08:46,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:08:46,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:08:46,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:08:46,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:08:46,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:08:46,699 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:08:46,700 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:08:46,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-01-27 23:08:47,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:08:47,937 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:08:47,938 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-01-27 23:08:47,944 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1f01352/2604ee2b3c2843efa1ddacd3957e58f6/FLAG0b1d8d7be [2023-01-27 23:08:47,955 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1f01352/2604ee2b3c2843efa1ddacd3957e58f6 [2023-01-27 23:08:47,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:08:47,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:08:47,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:08:47,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:08:47,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:08:47,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:08:47" (1/1) ... [2023-01-27 23:08:47,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce4b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:47, skipping insertion in model container [2023-01-27 23:08:47,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:08:47" (1/1) ... [2023-01-27 23:08:47,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:08:47,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:08:48,123 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-01-27 23:08:48,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:08:48,134 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:08:48,153 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2023-01-27 23:08:48,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:08:48,160 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:08:48,160 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:08:48,165 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:08:48,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48 WrapperNode [2023-01-27 23:08:48,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:08:48,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:08:48,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:08:48,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:08:48,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,199 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-01-27 23:08:48,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:08:48,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:08:48,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:08:48,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:08:48,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:08:48,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:08:48,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:08:48,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:08:48,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (1/1) ... [2023-01-27 23:08:48,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:08:48,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:48,245 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) [2023-01-27 23:08:48,270 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 [2023-01-27 23:08:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:08:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:08:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:08:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:08:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:08:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:08:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:08:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:08:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 23:08:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 23:08:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:08:48,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:08:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:08:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:08:48,293 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:08:48,393 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:08:48,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:08:48,518 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:08:48,523 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:08:48,523 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:08:48,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:08:48 BoogieIcfgContainer [2023-01-27 23:08:48,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:08:48,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:08:48,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:08:48,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:08:48,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:08:47" (1/3) ... [2023-01-27 23:08:48,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acdca68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:08:48, skipping insertion in model container [2023-01-27 23:08:48,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:08:48" (2/3) ... [2023-01-27 23:08:48,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acdca68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:08:48, skipping insertion in model container [2023-01-27 23:08:48,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:08:48" (3/3) ... [2023-01-27 23:08:48,537 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-01-27 23:08:48,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:08:48,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:08:48,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:08:48,689 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:08:48,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 81 transitions, 178 flow [2023-01-27 23:08:48,796 INFO L130 PetriNetUnfolder]: 6/79 cut-off events. [2023-01-27 23:08:48,796 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:08:48,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 6/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-01-27 23:08:48,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 81 transitions, 178 flow [2023-01-27 23:08:48,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 154 flow [2023-01-27 23:08:48,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:08:48,817 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 71 transitions, 154 flow [2023-01-27 23:08:48,819 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 71 transitions, 154 flow [2023-01-27 23:08:48,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 154 flow [2023-01-27 23:08:48,852 INFO L130 PetriNetUnfolder]: 6/71 cut-off events. [2023-01-27 23:08:48,852 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:08:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 6/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-01-27 23:08:48,854 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-01-27 23:08:50,678 INFO L134 LiptonReduction]: Checked pairs total: 581 [2023-01-27 23:08:50,678 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-01-27 23:08:50,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:08:50,698 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;@13d5449b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:08:50,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:08:50,702 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-01-27 23:08:50,703 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:08:50,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:50,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:50,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:50,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash -69252771, now seen corresponding path program 1 times [2023-01-27 23:08:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426942830] [2023-01-27 23:08:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:50,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426942830] [2023-01-27 23:08:51,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426942830] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:51,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:51,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:51,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931256044] [2023-01-27 23:08:51,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:51,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:08:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:08:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:51,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:51,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:51,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:51,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:51,428 INFO L130 PetriNetUnfolder]: 58/106 cut-off events. [2023-01-27 23:08:51,429 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-27 23:08:51,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 58/106 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 248 event pairs, 11 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 180. Up to 48 conditions per place. [2023-01-27 23:08:51,431 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 26 selfloop transitions, 10 changer transitions 5/41 dead transitions. [2023-01-27 23:08:51,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 185 flow [2023-01-27 23:08:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-01-27 23:08:51,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2023-01-27 23:08:51,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-01-27 23:08:51,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-01-27 23:08:51,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:51,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-01-27 23:08:51,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,461 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,463 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 7 states and 413 transitions. [2023-01-27 23:08:51,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 185 flow [2023-01-27 23:08:51,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:08:51,467 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 101 flow [2023-01-27 23:08:51,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-01-27 23:08:51,471 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2023-01-27 23:08:51,471 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 101 flow [2023-01-27 23:08:51,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:51,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:51,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:08:51,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:51,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 758171711, now seen corresponding path program 2 times [2023-01-27 23:08:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:51,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641097151] [2023-01-27 23:08:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:51,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641097151] [2023-01-27 23:08:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641097151] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:51,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591232745] [2023-01-27 23:08:51,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:08:51,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:08:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:51,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:51,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:51,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:51,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:51,813 INFO L130 PetriNetUnfolder]: 96/166 cut-off events. [2023-01-27 23:08:51,813 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-01-27 23:08:51,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 166 events. 96/166 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 476 event pairs, 11 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 499. Up to 69 conditions per place. [2023-01-27 23:08:51,815 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 39 selfloop transitions, 14 changer transitions 5/58 dead transitions. [2023-01-27 23:08:51,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 58 transitions, 333 flow [2023-01-27 23:08:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 421 transitions. [2023-01-27 23:08:51,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40913508260447035 [2023-01-27 23:08:51,818 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 421 transitions. [2023-01-27 23:08:51,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 421 transitions. [2023-01-27 23:08:51,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:51,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 421 transitions. [2023-01-27 23:08:51,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,823 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,823 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 101 flow. Second operand 7 states and 421 transitions. [2023-01-27 23:08:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 58 transitions, 333 flow [2023-01-27 23:08:51,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 58 transitions, 325 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 23:08:51,826 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 198 flow [2023-01-27 23:08:51,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-01-27 23:08:51,826 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2023-01-27 23:08:51,827 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 198 flow [2023-01-27 23:08:51,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:51,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:08:51,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:51,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash 649780581, now seen corresponding path program 3 times [2023-01-27 23:08:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:51,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471380233] [2023-01-27 23:08:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:51,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471380233] [2023-01-27 23:08:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471380233] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:51,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:51,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:51,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885418784] [2023-01-27 23:08:51,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:08:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:08:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:51,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:51,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:51,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:51,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:51,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:52,098 INFO L130 PetriNetUnfolder]: 112/190 cut-off events. [2023-01-27 23:08:52,098 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2023-01-27 23:08:52,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 190 events. 112/190 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 533 event pairs, 12 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 752. Up to 108 conditions per place. [2023-01-27 23:08:52,101 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 33 selfloop transitions, 21 changer transitions 6/60 dead transitions. [2023-01-27 23:08:52,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 460 flow [2023-01-27 23:08:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 412 transitions. [2023-01-27 23:08:52,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003887269193392 [2023-01-27 23:08:52,104 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 412 transitions. [2023-01-27 23:08:52,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 412 transitions. [2023-01-27 23:08:52,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:52,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 412 transitions. [2023-01-27 23:08:52,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.857142857142854) internal successors, (412), 7 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,108 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,108 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 198 flow. Second operand 7 states and 412 transitions. [2023-01-27 23:08:52,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 460 flow [2023-01-27 23:08:52,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 423 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-01-27 23:08:52,112 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 331 flow [2023-01-27 23:08:52,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-01-27 23:08:52,114 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 23 predicate places. [2023-01-27 23:08:52,116 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 331 flow [2023-01-27 23:08:52,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:52,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:08:52,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:52,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -96540297, now seen corresponding path program 4 times [2023-01-27 23:08:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839090735] [2023-01-27 23:08:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839090735] [2023-01-27 23:08:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839090735] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:52,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574232359] [2023-01-27 23:08:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:08:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:08:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:52,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:52,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:52,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:52,397 INFO L130 PetriNetUnfolder]: 115/197 cut-off events. [2023-01-27 23:08:52,398 INFO L131 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2023-01-27 23:08:52,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 197 events. 115/197 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 587 event pairs, 11 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 851. Up to 116 conditions per place. [2023-01-27 23:08:52,400 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 38 selfloop transitions, 23 changer transitions 5/66 dead transitions. [2023-01-27 23:08:52,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 553 flow [2023-01-27 23:08:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2023-01-27 23:08:52,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4062196307094266 [2023-01-27 23:08:52,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 418 transitions. [2023-01-27 23:08:52,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 418 transitions. [2023-01-27 23:08:52,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:52,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 418 transitions. [2023-01-27 23:08:52,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,407 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 331 flow. Second operand 7 states and 418 transitions. [2023-01-27 23:08:52,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 553 flow [2023-01-27 23:08:52,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 527 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-27 23:08:52,411 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 410 flow [2023-01-27 23:08:52,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-01-27 23:08:52,412 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2023-01-27 23:08:52,412 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 410 flow [2023-01-27 23:08:52,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:52,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:52,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:08:52,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:52,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1023964675, now seen corresponding path program 5 times [2023-01-27 23:08:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:52,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870605718] [2023-01-27 23:08:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:52,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:52,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:52,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870605718] [2023-01-27 23:08:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870605718] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:52,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104402824] [2023-01-27 23:08:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:52,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:08:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:08:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:52,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:52,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:52,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:52,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:52,661 INFO L130 PetriNetUnfolder]: 121/207 cut-off events. [2023-01-27 23:08:52,661 INFO L131 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2023-01-27 23:08:52,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 207 events. 121/207 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 638 event pairs, 8 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 990. Up to 123 conditions per place. [2023-01-27 23:08:52,664 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 40 selfloop transitions, 28 changer transitions 5/73 dead transitions. [2023-01-27 23:08:52,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 708 flow [2023-01-27 23:08:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 414 transitions. [2023-01-27 23:08:52,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40233236151603496 [2023-01-27 23:08:52,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 414 transitions. [2023-01-27 23:08:52,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 414 transitions. [2023-01-27 23:08:52,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:52,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 414 transitions. [2023-01-27 23:08:52,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,669 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 410 flow. Second operand 7 states and 414 transitions. [2023-01-27 23:08:52,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 708 flow [2023-01-27 23:08:52,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 646 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-27 23:08:52,673 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 530 flow [2023-01-27 23:08:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-01-27 23:08:52,674 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2023-01-27 23:08:52,674 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 530 flow [2023-01-27 23:08:52,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:52,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:08:52,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:52,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -232545019, now seen corresponding path program 6 times [2023-01-27 23:08:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476343936] [2023-01-27 23:08:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:52,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:52,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476343936] [2023-01-27 23:08:52,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476343936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:52,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:52,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:52,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171992527] [2023-01-27 23:08:52,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:52,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:08:52,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:08:52,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:52,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:52,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:52,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:52,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:52,951 INFO L130 PetriNetUnfolder]: 126/216 cut-off events. [2023-01-27 23:08:52,951 INFO L131 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2023-01-27 23:08:52,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 216 events. 126/216 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 654 event pairs, 18 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 1088. Up to 130 conditions per place. [2023-01-27 23:08:52,954 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 41 selfloop transitions, 29 changer transitions 5/75 dead transitions. [2023-01-27 23:08:52,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 781 flow [2023-01-27 23:08:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2023-01-27 23:08:52,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042759961127308 [2023-01-27 23:08:52,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2023-01-27 23:08:52,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2023-01-27 23:08:52,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:52,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2023-01-27 23:08:52,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,960 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,960 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 530 flow. Second operand 7 states and 416 transitions. [2023-01-27 23:08:52,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 781 flow [2023-01-27 23:08:52,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 741 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-27 23:08:52,967 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 613 flow [2023-01-27 23:08:52,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-01-27 23:08:52,969 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 42 predicate places. [2023-01-27 23:08:52,969 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 613 flow [2023-01-27 23:08:52,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.857142857142854) internal successors, (384), 7 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:52,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:52,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:52,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:08:52,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:52,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2077625246, now seen corresponding path program 1 times [2023-01-27 23:08:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158430897] [2023-01-27 23:08:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:53,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:53,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158430897] [2023-01-27 23:08:53,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158430897] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:53,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949048637] [2023-01-27 23:08:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:53,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:53,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:53,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:08:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:53,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:08:53,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:53,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:53,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949048637] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:53,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:08:53,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-01-27 23:08:53,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453826972] [2023-01-27 23:08:53,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:53,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:08:53,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:53,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 613 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:53,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:53,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:53,331 INFO L130 PetriNetUnfolder]: 131/230 cut-off events. [2023-01-27 23:08:53,331 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2023-01-27 23:08:53,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 230 events. 131/230 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 750 event pairs, 10 based on Foata normal form. 8/238 useless extension candidates. Maximal degree in co-relation 1221. Up to 102 conditions per place. [2023-01-27 23:08:53,334 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 62 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2023-01-27 23:08:53,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 891 flow [2023-01-27 23:08:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:08:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:08:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2023-01-27 23:08:53,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-27 23:08:53,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 315 transitions. [2023-01-27 23:08:53,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 315 transitions. [2023-01-27 23:08:53,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:53,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 315 transitions. [2023-01-27 23:08:53,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,339 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 613 flow. Second operand 5 states and 315 transitions. [2023-01-27 23:08:53,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 891 flow [2023-01-27 23:08:53,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 815 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-27 23:08:53,346 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 627 flow [2023-01-27 23:08:53,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-01-27 23:08:53,347 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 43 predicate places. [2023-01-27 23:08:53,347 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 627 flow [2023-01-27 23:08:53,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:53,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:53,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 23:08:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:53,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:53,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1451445671, now seen corresponding path program 1 times [2023-01-27 23:08:53,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:53,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940353196] [2023-01-27 23:08:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:53,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:53,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:53,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940353196] [2023-01-27 23:08:53,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940353196] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:53,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:53,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:53,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708994333] [2023-01-27 23:08:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:53,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:53,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:53,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:53,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:53,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 627 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:53,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:53,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:53,704 INFO L130 PetriNetUnfolder]: 127/226 cut-off events. [2023-01-27 23:08:53,704 INFO L131 PetriNetUnfolder]: For 1366/1366 co-relation queries the response was YES. [2023-01-27 23:08:53,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 226 events. 127/226 cut-off events. For 1366/1366 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 733 event pairs, 16 based on Foata normal form. 4/230 useless extension candidates. Maximal degree in co-relation 1104. Up to 90 conditions per place. [2023-01-27 23:08:53,707 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 49 selfloop transitions, 28 changer transitions 4/81 dead transitions. [2023-01-27 23:08:53,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 873 flow [2023-01-27 23:08:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 431 transitions. [2023-01-27 23:08:53,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41885325558794945 [2023-01-27 23:08:53,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 431 transitions. [2023-01-27 23:08:53,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 431 transitions. [2023-01-27 23:08:53,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:53,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 431 transitions. [2023-01-27 23:08:53,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.57142857142857) internal successors, (431), 7 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,712 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 627 flow. Second operand 7 states and 431 transitions. [2023-01-27 23:08:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 873 flow [2023-01-27 23:08:53,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 830 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-27 23:08:53,720 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 639 flow [2023-01-27 23:08:53,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-01-27 23:08:53,720 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2023-01-27 23:08:53,721 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 639 flow [2023-01-27 23:08:53,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:53,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:53,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:08:53,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:53,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1729374333, now seen corresponding path program 2 times [2023-01-27 23:08:53,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:53,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597794188] [2023-01-27 23:08:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:53,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:53,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:53,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597794188] [2023-01-27 23:08:53,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597794188] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:53,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:53,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875348006] [2023-01-27 23:08:53,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:53,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:53,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:53,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:53,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:53,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:53,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:53,865 INFO L130 PetriNetUnfolder]: 133/236 cut-off events. [2023-01-27 23:08:53,865 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2023-01-27 23:08:53,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 236 events. 133/236 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 757 event pairs, 23 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 1261. Up to 133 conditions per place. [2023-01-27 23:08:53,868 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 62 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2023-01-27 23:08:53,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 916 flow [2023-01-27 23:08:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:08:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:08:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2023-01-27 23:08:53,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2023-01-27 23:08:53,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 318 transitions. [2023-01-27 23:08:53,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 318 transitions. [2023-01-27 23:08:53,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:53,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 318 transitions. [2023-01-27 23:08:53,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,873 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 639 flow. Second operand 5 states and 318 transitions. [2023-01-27 23:08:53,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 916 flow [2023-01-27 23:08:53,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 837 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-01-27 23:08:53,880 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 639 flow [2023-01-27 23:08:53,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-01-27 23:08:53,881 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 46 predicate places. [2023-01-27 23:08:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 639 flow [2023-01-27 23:08:53,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:53,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:08:53,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:53,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2096697363, now seen corresponding path program 3 times [2023-01-27 23:08:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591683768] [2023-01-27 23:08:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:53,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591683768] [2023-01-27 23:08:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591683768] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783051051] [2023-01-27 23:08:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:53,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:53,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:53,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:53,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:53,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:53,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:54,023 INFO L130 PetriNetUnfolder]: 128/231 cut-off events. [2023-01-27 23:08:54,024 INFO L131 PetriNetUnfolder]: For 1179/1179 co-relation queries the response was YES. [2023-01-27 23:08:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 231 events. 128/231 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 749 event pairs, 16 based on Foata normal form. 4/235 useless extension candidates. Maximal degree in co-relation 1179. Up to 92 conditions per place. [2023-01-27 23:08:54,026 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 58 selfloop transitions, 28 changer transitions 3/89 dead transitions. [2023-01-27 23:08:54,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 942 flow [2023-01-27 23:08:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:08:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:08:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 495 transitions. [2023-01-27 23:08:54,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42091836734693877 [2023-01-27 23:08:54,029 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 495 transitions. [2023-01-27 23:08:54,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 495 transitions. [2023-01-27 23:08:54,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:54,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 495 transitions. [2023-01-27 23:08:54,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.875) internal successors, (495), 8 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,032 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 639 flow. Second operand 8 states and 495 transitions. [2023-01-27 23:08:54,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 942 flow [2023-01-27 23:08:54,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 908 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 23:08:54,039 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 676 flow [2023-01-27 23:08:54,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=676, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-01-27 23:08:54,040 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 51 predicate places. [2023-01-27 23:08:54,040 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 676 flow [2023-01-27 23:08:54,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:54,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:54,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:08:54,041 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:54,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1833085128, now seen corresponding path program 2 times [2023-01-27 23:08:54,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:54,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265923624] [2023-01-27 23:08:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265923624] [2023-01-27 23:08:54,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265923624] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:54,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:54,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578215954] [2023-01-27 23:08:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:54,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:54,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:54,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:54,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 676 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:54,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:54,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:54,165 INFO L130 PetriNetUnfolder]: 145/268 cut-off events. [2023-01-27 23:08:54,165 INFO L131 PetriNetUnfolder]: For 1492/1492 co-relation queries the response was YES. [2023-01-27 23:08:54,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 268 events. 145/268 cut-off events. For 1492/1492 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 935 event pairs, 10 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 1445. Up to 103 conditions per place. [2023-01-27 23:08:54,168 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 56 selfloop transitions, 26 changer transitions 1/83 dead transitions. [2023-01-27 23:08:54,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 989 flow [2023-01-27 23:08:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:08:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:08:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2023-01-27 23:08:54,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2023-01-27 23:08:54,170 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 371 transitions. [2023-01-27 23:08:54,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 371 transitions. [2023-01-27 23:08:54,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:54,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 371 transitions. [2023-01-27 23:08:54,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,173 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,173 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 676 flow. Second operand 6 states and 371 transitions. [2023-01-27 23:08:54,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 989 flow [2023-01-27 23:08:54,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 931 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-27 23:08:54,184 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 767 flow [2023-01-27 23:08:54,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=767, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-01-27 23:08:54,184 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-01-27 23:08:54,184 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 767 flow [2023-01-27 23:08:54,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:54,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:54,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 23:08:54,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:54,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1631307914, now seen corresponding path program 3 times [2023-01-27 23:08:54,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:54,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020449782] [2023-01-27 23:08:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020449782] [2023-01-27 23:08:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020449782] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544634971] [2023-01-27 23:08:54,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:08:54,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:54,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:54,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:54,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:08:54,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 23:08:54,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:08:54,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:08:54,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544634971] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:54,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:08:54,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-01-27 23:08:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255244369] [2023-01-27 23:08:54,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:54,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:54,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:54,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:54,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:54,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:54,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:54,419 INFO L130 PetriNetUnfolder]: 150/281 cut-off events. [2023-01-27 23:08:54,420 INFO L131 PetriNetUnfolder]: For 1865/1865 co-relation queries the response was YES. [2023-01-27 23:08:54,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 281 events. 150/281 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1012 event pairs, 6 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 1535. Up to 163 conditions per place. [2023-01-27 23:08:54,423 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 54 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2023-01-27 23:08:54,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 1014 flow [2023-01-27 23:08:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:08:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:08:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2023-01-27 23:08:54,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-27 23:08:54,425 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 315 transitions. [2023-01-27 23:08:54,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 315 transitions. [2023-01-27 23:08:54,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:54,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 315 transitions. [2023-01-27 23:08:54,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,427 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,427 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 767 flow. Second operand 5 states and 315 transitions. [2023-01-27 23:08:54,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 1014 flow [2023-01-27 23:08:54,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 945 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-01-27 23:08:54,448 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 819 flow [2023-01-27 23:08:54,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-01-27 23:08:54,449 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2023-01-27 23:08:54,449 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 819 flow [2023-01-27 23:08:54,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:54,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:54,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:08:54,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-27 23:08:54,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:54,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash 199479147, now seen corresponding path program 4 times [2023-01-27 23:08:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:54,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677469553] [2023-01-27 23:08:54,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:54,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:54,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677469553] [2023-01-27 23:08:54,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677469553] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:54,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602391056] [2023-01-27 23:08:54,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:08:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:54,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:54,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:08:54,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:08:54,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:08:54,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:08:54,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:54,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602391056] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:54,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:08:54,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-01-27 23:08:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497920157] [2023-01-27 23:08:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:54,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:54,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:54,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:08:54,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:54,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 819 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:54,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:54,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:54,883 INFO L130 PetriNetUnfolder]: 159/310 cut-off events. [2023-01-27 23:08:54,883 INFO L131 PetriNetUnfolder]: For 2376/2376 co-relation queries the response was YES. [2023-01-27 23:08:54,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 310 events. 159/310 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1194 event pairs, 10 based on Foata normal form. 6/316 useless extension candidates. Maximal degree in co-relation 1720. Up to 160 conditions per place. [2023-01-27 23:08:54,887 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 63 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2023-01-27 23:08:54,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 1111 flow [2023-01-27 23:08:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:08:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:08:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 311 transitions. [2023-01-27 23:08:54,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231292517006803 [2023-01-27 23:08:54,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 311 transitions. [2023-01-27 23:08:54,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 311 transitions. [2023-01-27 23:08:54,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:54,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 311 transitions. [2023-01-27 23:08:54,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,891 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,891 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 819 flow. Second operand 5 states and 311 transitions. [2023-01-27 23:08:54,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 1111 flow [2023-01-27 23:08:54,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 1098 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 23:08:54,909 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 906 flow [2023-01-27 23:08:54,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=906, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2023-01-27 23:08:54,910 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 61 predicate places. [2023-01-27 23:08:54,910 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 906 flow [2023-01-27 23:08:54,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:54,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:54,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:54,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:08:55,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:55,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:55,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1851774549, now seen corresponding path program 5 times [2023-01-27 23:08:55,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:55,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651944065] [2023-01-27 23:08:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:55,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:55,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651944065] [2023-01-27 23:08:55,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651944065] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:55,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:55,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567249334] [2023-01-27 23:08:55,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:55,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:55,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:55,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 906 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:55,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:55,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:55,256 INFO L130 PetriNetUnfolder]: 145/286 cut-off events. [2023-01-27 23:08:55,257 INFO L131 PetriNetUnfolder]: For 2486/2486 co-relation queries the response was YES. [2023-01-27 23:08:55,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 286 events. 145/286 cut-off events. For 2486/2486 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1079 event pairs, 10 based on Foata normal form. 8/294 useless extension candidates. Maximal degree in co-relation 1686. Up to 115 conditions per place. [2023-01-27 23:08:55,260 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 60 selfloop transitions, 25 changer transitions 1/86 dead transitions. [2023-01-27 23:08:55,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 1172 flow [2023-01-27 23:08:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:08:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:08:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2023-01-27 23:08:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2023-01-27 23:08:55,262 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 371 transitions. [2023-01-27 23:08:55,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 371 transitions. [2023-01-27 23:08:55,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:55,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 371 transitions. [2023-01-27 23:08:55,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,265 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 906 flow. Second operand 6 states and 371 transitions. [2023-01-27 23:08:55,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 86 transitions, 1172 flow [2023-01-27 23:08:55,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 1128 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 23:08:55,275 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 915 flow [2023-01-27 23:08:55,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=915, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-01-27 23:08:55,276 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 64 predicate places. [2023-01-27 23:08:55,276 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 915 flow [2023-01-27 23:08:55,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:55,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 23:08:55,278 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:55,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1933318608, now seen corresponding path program 4 times [2023-01-27 23:08:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:55,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796328620] [2023-01-27 23:08:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:55,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:55,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:55,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796328620] [2023-01-27 23:08:55,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796328620] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:55,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901809035] [2023-01-27 23:08:55,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:08:55,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:55,316 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:55,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:08:55,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:08:55,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:08:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:08:55,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:55,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:55,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901809035] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:55,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:08:55,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-01-27 23:08:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346619493] [2023-01-27 23:08:55,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:55,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:08:55,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:55,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 915 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:55,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:55,500 INFO L130 PetriNetUnfolder]: 139/272 cut-off events. [2023-01-27 23:08:55,500 INFO L131 PetriNetUnfolder]: For 2565/2565 co-relation queries the response was YES. [2023-01-27 23:08:55,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 272 events. 139/272 cut-off events. For 2565/2565 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 998 event pairs, 23 based on Foata normal form. 6/278 useless extension candidates. Maximal degree in co-relation 1618. Up to 145 conditions per place. [2023-01-27 23:08:55,503 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 58 selfloop transitions, 31 changer transitions 0/89 dead transitions. [2023-01-27 23:08:55,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 1175 flow [2023-01-27 23:08:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:08:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:08:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2023-01-27 23:08:55,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-01-27 23:08:55,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 378 transitions. [2023-01-27 23:08:55,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 378 transitions. [2023-01-27 23:08:55,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:55,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 378 transitions. [2023-01-27 23:08:55,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,510 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 915 flow. Second operand 6 states and 378 transitions. [2023-01-27 23:08:55,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 1175 flow [2023-01-27 23:08:55,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 1152 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 23:08:55,519 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 967 flow [2023-01-27 23:08:55,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=967, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2023-01-27 23:08:55,520 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 66 predicate places. [2023-01-27 23:08:55,520 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 967 flow [2023-01-27 23:08:55,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:55,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:55,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 23:08:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 23:08:55,727 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:55,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash 58117330, now seen corresponding path program 5 times [2023-01-27 23:08:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656629474] [2023-01-27 23:08:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656629474] [2023-01-27 23:08:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656629474] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:55,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:55,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984920459] [2023-01-27 23:08:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:55,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:55,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:55,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 967 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:55,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:55,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:55,864 INFO L130 PetriNetUnfolder]: 137/270 cut-off events. [2023-01-27 23:08:55,864 INFO L131 PetriNetUnfolder]: For 2647/2647 co-relation queries the response was YES. [2023-01-27 23:08:55,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 270 events. 137/270 cut-off events. For 2647/2647 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 994 event pairs, 27 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 1721. Up to 101 conditions per place. [2023-01-27 23:08:55,868 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 54 selfloop transitions, 27 changer transitions 2/83 dead transitions. [2023-01-27 23:08:55,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 1184 flow [2023-01-27 23:08:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:08:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:08:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 426 transitions. [2023-01-27 23:08:55,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139941690962099 [2023-01-27 23:08:55,871 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 426 transitions. [2023-01-27 23:08:55,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 426 transitions. [2023-01-27 23:08:55,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:55,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 426 transitions. [2023-01-27 23:08:55,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,876 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,876 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 967 flow. Second operand 7 states and 426 transitions. [2023-01-27 23:08:55,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 1184 flow [2023-01-27 23:08:55,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 1138 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-27 23:08:55,885 INFO L231 Difference]: Finished difference. Result has 90 places, 66 transitions, 932 flow [2023-01-27 23:08:55,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=932, PETRI_PLACES=90, PETRI_TRANSITIONS=66} [2023-01-27 23:08:55,886 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2023-01-27 23:08:55,886 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 66 transitions, 932 flow [2023-01-27 23:08:55,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:55,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:55,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 23:08:55,886 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:55,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1486589744, now seen corresponding path program 6 times [2023-01-27 23:08:55,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:55,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282336225] [2023-01-27 23:08:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:55,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:55,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:55,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282336225] [2023-01-27 23:08:55,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282336225] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:55,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:55,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732165379] [2023-01-27 23:08:55,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:55,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:55,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:55,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:55,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:55,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 66 transitions, 932 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:55,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:55,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:55,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:56,044 INFO L130 PetriNetUnfolder]: 131/252 cut-off events. [2023-01-27 23:08:56,044 INFO L131 PetriNetUnfolder]: For 2667/2667 co-relation queries the response was YES. [2023-01-27 23:08:56,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 252 events. 131/252 cut-off events. For 2667/2667 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 891 event pairs, 23 based on Foata normal form. 2/254 useless extension candidates. Maximal degree in co-relation 1659. Up to 101 conditions per place. [2023-01-27 23:08:56,047 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 55 selfloop transitions, 27 changer transitions 1/83 dead transitions. [2023-01-27 23:08:56,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 1156 flow [2023-01-27 23:08:56,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:08:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:08:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 487 transitions. [2023-01-27 23:08:56,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141156462585034 [2023-01-27 23:08:56,050 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 487 transitions. [2023-01-27 23:08:56,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 487 transitions. [2023-01-27 23:08:56,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:56,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 487 transitions. [2023-01-27 23:08:56,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.875) internal successors, (487), 8 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 147.0) internal successors, (1323), 9 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,053 INFO L175 Difference]: Start difference. First operand has 90 places, 66 transitions, 932 flow. Second operand 8 states and 487 transitions. [2023-01-27 23:08:56,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 1156 flow [2023-01-27 23:08:56,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 83 transitions, 1106 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-27 23:08:56,062 INFO L231 Difference]: Finished difference. Result has 92 places, 63 transitions, 888 flow [2023-01-27 23:08:56,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=92, PETRI_TRANSITIONS=63} [2023-01-27 23:08:56,062 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 72 predicate places. [2023-01-27 23:08:56,062 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 63 transitions, 888 flow [2023-01-27 23:08:56,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:56,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:56,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 23:08:56,064 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:56,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1093501371, now seen corresponding path program 6 times [2023-01-27 23:08:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:56,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636176992] [2023-01-27 23:08:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:56,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636176992] [2023-01-27 23:08:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636176992] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:08:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:08:56,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:08:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138932379] [2023-01-27 23:08:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:08:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:08:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:08:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:08:56,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 147 [2023-01-27 23:08:56,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 63 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:56,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 147 [2023-01-27 23:08:56,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:56,177 INFO L130 PetriNetUnfolder]: 125/236 cut-off events. [2023-01-27 23:08:56,177 INFO L131 PetriNetUnfolder]: For 2604/2604 co-relation queries the response was YES. [2023-01-27 23:08:56,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 236 events. 125/236 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 783 event pairs, 10 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 1461. Up to 173 conditions per place. [2023-01-27 23:08:56,180 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 50 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-01-27 23:08:56,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 68 transitions, 1010 flow [2023-01-27 23:08:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:08:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:08:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2023-01-27 23:08:56,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2023-01-27 23:08:56,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2023-01-27 23:08:56,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2023-01-27 23:08:56,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:56,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2023-01-27 23:08:56,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,185 INFO L175 Difference]: Start difference. First operand has 92 places, 63 transitions, 888 flow. Second operand 5 states and 305 transitions. [2023-01-27 23:08:56,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 68 transitions, 1010 flow [2023-01-27 23:08:56,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 68 transitions, 950 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-01-27 23:08:56,192 INFO L231 Difference]: Finished difference. Result has 85 places, 61 transitions, 815 flow [2023-01-27 23:08:56,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=85, PETRI_TRANSITIONS=61} [2023-01-27 23:08:56,193 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2023-01-27 23:08:56,193 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 61 transitions, 815 flow [2023-01-27 23:08:56,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:56,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 23:08:56,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:56,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1299106536, now seen corresponding path program 1 times [2023-01-27 23:08:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345044064] [2023-01-27 23:08:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:56,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:56,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345044064] [2023-01-27 23:08:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345044064] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735666141] [2023-01-27 23:08:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:56,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:56,334 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:56,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:08:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:56,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:08:56,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:56,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735666141] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:08:56,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:08:56,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-27 23:08:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993439161] [2023-01-27 23:08:56,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:08:56,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:08:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:08:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:08:56,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:56,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 61 transitions, 815 flow. Second operand has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:56,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:56,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:57,227 INFO L130 PetriNetUnfolder]: 125/235 cut-off events. [2023-01-27 23:08:57,227 INFO L131 PetriNetUnfolder]: For 2124/2124 co-relation queries the response was YES. [2023-01-27 23:08:57,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 235 events. 125/235 cut-off events. For 2124/2124 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 793 event pairs, 2 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 1359. Up to 51 conditions per place. [2023-01-27 23:08:57,230 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 42 selfloop transitions, 22 changer transitions 27/91 dead transitions. [2023-01-27 23:08:57,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 1145 flow [2023-01-27 23:08:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:08:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:08:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 642 transitions. [2023-01-27 23:08:57,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970315398886827 [2023-01-27 23:08:57,235 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 642 transitions. [2023-01-27 23:08:57,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 642 transitions. [2023-01-27 23:08:57,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:57,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 642 transitions. [2023-01-27 23:08:57,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.36363636363637) internal successors, (642), 11 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:57,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:57,240 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:57,240 INFO L175 Difference]: Start difference. First operand has 85 places, 61 transitions, 815 flow. Second operand 11 states and 642 transitions. [2023-01-27 23:08:57,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 1145 flow [2023-01-27 23:08:57,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 1120 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 23:08:57,248 INFO L231 Difference]: Finished difference. Result has 94 places, 48 transitions, 666 flow [2023-01-27 23:08:57,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=666, PETRI_PLACES=94, PETRI_TRANSITIONS=48} [2023-01-27 23:08:57,248 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 74 predicate places. [2023-01-27 23:08:57,249 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 48 transitions, 666 flow [2023-01-27 23:08:57,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:57,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:57,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:57,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:08:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:57,455 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:57,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1701107400, now seen corresponding path program 2 times [2023-01-27 23:08:57,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:57,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951616098] [2023-01-27 23:08:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:57,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951616098] [2023-01-27 23:08:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951616098] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662474943] [2023-01-27 23:08:57,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:08:57,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:57,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:57,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:08:57,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:08:57,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:08:57,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:08:57,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:57,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662474943] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:08:58,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:08:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-01-27 23:08:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200425321] [2023-01-27 23:08:58,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:08:58,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:08:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:08:58,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:08:58,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 147 [2023-01-27 23:08:58,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 48 transitions, 666 flow. Second operand has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:58,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:58,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 147 [2023-01-27 23:08:58,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:58,476 INFO L130 PetriNetUnfolder]: 96/188 cut-off events. [2023-01-27 23:08:58,476 INFO L131 PetriNetUnfolder]: For 1913/1913 co-relation queries the response was YES. [2023-01-27 23:08:58,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 188 events. 96/188 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 580 event pairs, 2 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 1258. Up to 46 conditions per place. [2023-01-27 23:08:58,478 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 46 selfloop transitions, 27 changer transitions 9/82 dead transitions. [2023-01-27 23:08:58,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 82 transitions, 1049 flow [2023-01-27 23:08:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:08:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:08:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 586 transitions. [2023-01-27 23:08:58,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3623995052566481 [2023-01-27 23:08:58,479 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 586 transitions. [2023-01-27 23:08:58,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 586 transitions. [2023-01-27 23:08:58,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:58,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 586 transitions. [2023-01-27 23:08:58,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 53.27272727272727) internal successors, (586), 11 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:58,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:58,483 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:58,483 INFO L175 Difference]: Start difference. First operand has 94 places, 48 transitions, 666 flow. Second operand 11 states and 586 transitions. [2023-01-27 23:08:58,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 82 transitions, 1049 flow [2023-01-27 23:08:58,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 82 transitions, 837 flow, removed 15 selfloop flow, removed 20 redundant places. [2023-01-27 23:08:58,491 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 593 flow [2023-01-27 23:08:58,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=593, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-01-27 23:08:58,493 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 59 predicate places. [2023-01-27 23:08:58,493 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 593 flow [2023-01-27 23:08:58,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:58,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:58,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:58,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 23:08:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:58,705 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:58,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1717886460, now seen corresponding path program 3 times [2023-01-27 23:08:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726450837] [2023-01-27 23:08:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726450837] [2023-01-27 23:08:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726450837] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126635502] [2023-01-27 23:08:58,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:08:58,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:58,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:58,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:58,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:08:58,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 23:08:58,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:08:58,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:08:58,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:08:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:59,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:08:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126635502] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:08:59,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:08:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 23:08:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817229222] [2023-01-27 23:08:59,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:08:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 23:08:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:08:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 23:08:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-27 23:08:59,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:08:59,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions, 593 flow. Second operand has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:59,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:08:59,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:08:59,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:08:59,568 INFO L130 PetriNetUnfolder]: 90/183 cut-off events. [2023-01-27 23:08:59,568 INFO L131 PetriNetUnfolder]: For 1103/1103 co-relation queries the response was YES. [2023-01-27 23:08:59,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 183 events. 90/183 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 572 event pairs, 2 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 1079. Up to 45 conditions per place. [2023-01-27 23:08:59,569 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 34 selfloop transitions, 16 changer transitions 26/76 dead transitions. [2023-01-27 23:08:59,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 870 flow [2023-01-27 23:08:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:08:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:08:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 635 transitions. [2023-01-27 23:08:59,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39270253555967843 [2023-01-27 23:08:59,572 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 635 transitions. [2023-01-27 23:08:59,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 635 transitions. [2023-01-27 23:08:59,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:08:59,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 635 transitions. [2023-01-27 23:08:59,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.72727272727273) internal successors, (635), 11 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:59,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:59,581 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:59,581 INFO L175 Difference]: Start difference. First operand has 79 places, 51 transitions, 593 flow. Second operand 11 states and 635 transitions. [2023-01-27 23:08:59,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 76 transitions, 870 flow [2023-01-27 23:08:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 793 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-01-27 23:08:59,587 INFO L231 Difference]: Finished difference. Result has 80 places, 39 transitions, 422 flow [2023-01-27 23:08:59,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=422, PETRI_PLACES=80, PETRI_TRANSITIONS=39} [2023-01-27 23:08:59,587 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2023-01-27 23:08:59,587 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 39 transitions, 422 flow [2023-01-27 23:08:59,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:08:59,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:08:59,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:08:59,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 23:08:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:59,799 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:08:59,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:08:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1577916472, now seen corresponding path program 4 times [2023-01-27 23:08:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:08:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727179830] [2023-01-27 23:08:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:08:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:08:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:08:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:08:59,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:08:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727179830] [2023-01-27 23:08:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727179830] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:08:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684554806] [2023-01-27 23:08:59,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:08:59,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:08:59,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:08:59,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:08:59,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:08:59,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:08:59,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:08:59,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:08:59,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:09:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:00,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:09:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684554806] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:09:00,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:09:00,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 23:09:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5085333] [2023-01-27 23:09:00,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:09:00,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 23:09:00,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:09:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 23:09:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-27 23:09:00,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:09:00,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 39 transitions, 422 flow. Second operand has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:00,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:09:00,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:09:00,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:09:00,993 INFO L130 PetriNetUnfolder]: 81/179 cut-off events. [2023-01-27 23:09:00,994 INFO L131 PetriNetUnfolder]: For 977/977 co-relation queries the response was YES. [2023-01-27 23:09:00,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 179 events. 81/179 cut-off events. For 977/977 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 589 event pairs, 1 based on Foata normal form. 3/182 useless extension candidates. Maximal degree in co-relation 998. Up to 41 conditions per place. [2023-01-27 23:09:00,995 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 38 selfloop transitions, 28 changer transitions 18/84 dead transitions. [2023-01-27 23:09:00,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 899 flow [2023-01-27 23:09:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 23:09:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 23:09:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 974 transitions. [2023-01-27 23:09:00,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897559023609444 [2023-01-27 23:09:00,998 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 974 transitions. [2023-01-27 23:09:00,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 974 transitions. [2023-01-27 23:09:00,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:09:00,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 974 transitions. [2023-01-27 23:09:00,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 57.294117647058826) internal successors, (974), 17 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,002 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,002 INFO L175 Difference]: Start difference. First operand has 80 places, 39 transitions, 422 flow. Second operand 17 states and 974 transitions. [2023-01-27 23:09:01,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 899 flow [2023-01-27 23:09:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 795 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-01-27 23:09:01,007 INFO L231 Difference]: Finished difference. Result has 82 places, 48 transitions, 535 flow [2023-01-27 23:09:01,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=535, PETRI_PLACES=82, PETRI_TRANSITIONS=48} [2023-01-27 23:09:01,007 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2023-01-27 23:09:01,007 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 48 transitions, 535 flow [2023-01-27 23:09:01,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.421052631578945) internal successors, (1034), 19 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:09:01,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:09:01,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 23:09:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-27 23:09:01,213 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:09:01,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:09:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1858770940, now seen corresponding path program 5 times [2023-01-27 23:09:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:09:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687266658] [2023-01-27 23:09:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:09:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:09:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:09:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:09:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687266658] [2023-01-27 23:09:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687266658] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:09:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262267121] [2023-01-27 23:09:01,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:09:01,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:09:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:09:01,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:09:01,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 23:09:01,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:09:01,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:09:01,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 23:09:01,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:09:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:01,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:09:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262267121] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:09:01,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:09:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-01-27 23:09:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299789296] [2023-01-27 23:09:01,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:09:01,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:09:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:09:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:09:01,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:09:01,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 147 [2023-01-27 23:09:01,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 48 transitions, 535 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:09:01,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 147 [2023-01-27 23:09:01,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:09:01,627 INFO L130 PetriNetUnfolder]: 72/142 cut-off events. [2023-01-27 23:09:01,627 INFO L131 PetriNetUnfolder]: For 834/834 co-relation queries the response was YES. [2023-01-27 23:09:01,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 142 events. 72/142 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 391 event pairs, 8 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 834. Up to 45 conditions per place. [2023-01-27 23:09:01,630 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 28 selfloop transitions, 9 changer transitions 21/58 dead transitions. [2023-01-27 23:09:01,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 58 transitions, 698 flow [2023-01-27 23:09:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:09:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:09:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2023-01-27 23:09:01,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41205053449951407 [2023-01-27 23:09:01,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2023-01-27 23:09:01,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2023-01-27 23:09:01,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:09:01,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2023-01-27 23:09:01,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,634 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,634 INFO L175 Difference]: Start difference. First operand has 82 places, 48 transitions, 535 flow. Second operand 7 states and 424 transitions. [2023-01-27 23:09:01,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 58 transitions, 698 flow [2023-01-27 23:09:01,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 589 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-01-27 23:09:01,638 INFO L231 Difference]: Finished difference. Result has 75 places, 34 transitions, 313 flow [2023-01-27 23:09:01,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=75, PETRI_TRANSITIONS=34} [2023-01-27 23:09:01,638 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-01-27 23:09:01,638 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 34 transitions, 313 flow [2023-01-27 23:09:01,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:01,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:09:01,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:09:01,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 23:09:01,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:09:01,849 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:09:01,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:09:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2082091444, now seen corresponding path program 6 times [2023-01-27 23:09:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:09:01,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307719667] [2023-01-27 23:09:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:09:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:09:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:09:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:01,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:09:01,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307719667] [2023-01-27 23:09:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307719667] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:09:01,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175567338] [2023-01-27 23:09:01,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 23:09:01,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:09:01,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:09:01,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:09:01,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 23:09:02,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 23:09:02,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:09:02,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:09:02,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:09:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:02,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:09:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175567338] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:09:02,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:09:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-27 23:09:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899842738] [2023-01-27 23:09:02,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:09:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-27 23:09:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:09:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-27 23:09:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-01-27 23:09:02,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:09:02,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 34 transitions, 313 flow. Second operand has 19 states, 19 states have (on average 54.73684210526316) internal successors, (1040), 19 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:02,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:09:02,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:09:02,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:09:03,071 INFO L130 PetriNetUnfolder]: 54/123 cut-off events. [2023-01-27 23:09:03,071 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-01-27 23:09:03,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 123 events. 54/123 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 1 based on Foata normal form. 2/125 useless extension candidates. Maximal degree in co-relation 621. Up to 23 conditions per place. [2023-01-27 23:09:03,072 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 24 selfloop transitions, 17 changer transitions 28/69 dead transitions. [2023-01-27 23:09:03,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 589 flow [2023-01-27 23:09:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 23:09:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 23:09:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 967 transitions. [2023-01-27 23:09:03,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869547819127651 [2023-01-27 23:09:03,074 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 967 transitions. [2023-01-27 23:09:03,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 967 transitions. [2023-01-27 23:09:03,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:09:03,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 967 transitions. [2023-01-27 23:09:03,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 56.88235294117647) internal successors, (967), 17 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,079 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 147.0) internal successors, (2646), 18 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,079 INFO L175 Difference]: Start difference. First operand has 75 places, 34 transitions, 313 flow. Second operand 17 states and 967 transitions. [2023-01-27 23:09:03,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 589 flow [2023-01-27 23:09:03,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 514 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-01-27 23:09:03,082 INFO L231 Difference]: Finished difference. Result has 74 places, 30 transitions, 249 flow [2023-01-27 23:09:03,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=249, PETRI_PLACES=74, PETRI_TRANSITIONS=30} [2023-01-27 23:09:03,083 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 54 predicate places. [2023-01-27 23:09:03,083 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 30 transitions, 249 flow [2023-01-27 23:09:03,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.73684210526316) internal successors, (1040), 19 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:09:03,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:09:03,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 23:09:03,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-27 23:09:03,284 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:09:03,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:09:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash -669051972, now seen corresponding path program 7 times [2023-01-27 23:09:03,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:09:03,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889608296] [2023-01-27 23:09:03,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:09:03,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:09:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:09:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:09:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889608296] [2023-01-27 23:09:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889608296] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:09:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179780676] [2023-01-27 23:09:03,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 23:09:03,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:09:03,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:09:03,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:09:03,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 23:09:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:09:03,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:09:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:09:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:03,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:09:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179780676] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:09:03,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:09:03,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-27 23:09:03,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752706489] [2023-01-27 23:09:03,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:09:03,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:09:03,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:09:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:09:03,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:09:03,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 147 [2023-01-27 23:09:03,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 30 transitions, 249 flow. Second operand has 18 states, 18 states have (on average 54.44444444444444) internal successors, (980), 18 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:09:03,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 147 [2023-01-27 23:09:03,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:09:03,937 INFO L130 PetriNetUnfolder]: 36/84 cut-off events. [2023-01-27 23:09:03,937 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-01-27 23:09:03,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 84 events. 36/84 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 3 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 403. Up to 21 conditions per place. [2023-01-27 23:09:03,938 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 24 selfloop transitions, 13 changer transitions 7/44 dead transitions. [2023-01-27 23:09:03,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 44 transitions, 378 flow [2023-01-27 23:09:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:09:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:09:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2023-01-27 23:09:03,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.383426097711812 [2023-01-27 23:09:03,940 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 620 transitions. [2023-01-27 23:09:03,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 620 transitions. [2023-01-27 23:09:03,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:09:03,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 620 transitions. [2023-01-27 23:09:03,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.36363636363637) internal successors, (620), 11 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,943 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 147.0) internal successors, (1764), 12 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,943 INFO L175 Difference]: Start difference. First operand has 74 places, 30 transitions, 249 flow. Second operand 11 states and 620 transitions. [2023-01-27 23:09:03,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 44 transitions, 378 flow [2023-01-27 23:09:03,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 44 transitions, 336 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-01-27 23:09:03,945 INFO L231 Difference]: Finished difference. Result has 63 places, 28 transitions, 215 flow [2023-01-27 23:09:03,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=215, PETRI_PLACES=63, PETRI_TRANSITIONS=28} [2023-01-27 23:09:03,945 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 43 predicate places. [2023-01-27 23:09:03,945 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 28 transitions, 215 flow [2023-01-27 23:09:03,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.44444444444444) internal successors, (980), 18 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:03,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:09:03,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:09:03,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 23:09:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-27 23:09:04,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:09:04,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:09:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -685831032, now seen corresponding path program 8 times [2023-01-27 23:09:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:09:04,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142671694] [2023-01-27 23:09:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:09:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:09:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:09:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:04,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:09:04,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142671694] [2023-01-27 23:09:04,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142671694] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:09:04,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086766802] [2023-01-27 23:09:04,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:09:04,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:09:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:09:04,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:09:04,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 23:09:04,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:09:04,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:09:04,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:09:04,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:09:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:04,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:09:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:09:04,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086766802] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:09:04,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:09:04,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-01-27 23:09:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85875618] [2023-01-27 23:09:04,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:09:04,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:09:04,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:09:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:09:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:09:04,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 147 [2023-01-27 23:09:04,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 28 transitions, 215 flow. Second operand has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:04,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:09:04,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 147 [2023-01-27 23:09:04,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:09:04,927 INFO L130 PetriNetUnfolder]: 34/74 cut-off events. [2023-01-27 23:09:04,927 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2023-01-27 23:09:04,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 74 events. 34/74 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 3 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 345. Up to 21 conditions per place. [2023-01-27 23:09:04,928 INFO L137 encePairwiseOnDemand]: 139/147 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-01-27 23:09:04,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 36 transitions, 312 flow [2023-01-27 23:09:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:09:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:09:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 461 transitions. [2023-01-27 23:09:04,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34845049130763417 [2023-01-27 23:09:04,929 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 461 transitions. [2023-01-27 23:09:04,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 461 transitions. [2023-01-27 23:09:04,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:09:04,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 461 transitions. [2023-01-27 23:09:04,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.22222222222222) internal successors, (461), 9 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:04,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 147.0) internal successors, (1470), 10 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:04,932 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 147.0) internal successors, (1470), 10 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:04,932 INFO L175 Difference]: Start difference. First operand has 63 places, 28 transitions, 215 flow. Second operand 9 states and 461 transitions. [2023-01-27 23:09:04,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 36 transitions, 312 flow [2023-01-27 23:09:04,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 36 transitions, 285 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-01-27 23:09:04,933 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-01-27 23:09:04,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-01-27 23:09:04,934 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places. [2023-01-27 23:09:04,934 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-01-27 23:09:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.8) internal successors, (996), 20 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:09:04,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:09:04,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:09:04,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:09:04,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-27 23:09:05,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-27 23:09:05,142 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 6] [2023-01-27 23:09:05,144 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:09:05,144 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:09:05,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:09:05 BasicIcfg [2023-01-27 23:09:05,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:09:05,147 INFO L158 Benchmark]: Toolchain (without parser) took 17187.84ms. Allocated memory was 530.6MB in the beginning and 637.5MB in the end (delta: 107.0MB). Free memory was 481.7MB in the beginning and 481.3MB in the end (delta: 430.8kB). Peak memory consumption was 109.9MB. Max. memory is 16.0GB. [2023-01-27 23:09:05,147 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory is still 303.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:09:05,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.97ms. Allocated memory is still 530.6MB. Free memory was 481.5MB in the beginning and 470.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 23:09:05,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.04ms. Allocated memory is still 530.6MB. Free memory was 470.6MB in the beginning and 469.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:09:05,147 INFO L158 Benchmark]: Boogie Preprocessor took 18.33ms. Allocated memory is still 530.6MB. Free memory was 469.3MB in the beginning and 468.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:09:05,148 INFO L158 Benchmark]: RCFGBuilder took 306.52ms. Allocated memory is still 530.6MB. Free memory was 468.1MB in the beginning and 455.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 23:09:05,148 INFO L158 Benchmark]: TraceAbstraction took 16619.52ms. Allocated memory was 530.6MB in the beginning and 637.5MB in the end (delta: 107.0MB). Free memory was 455.0MB in the beginning and 481.3MB in the end (delta: -26.2MB). Peak memory consumption was 82.7MB. Max. memory is 16.0GB. [2023-01-27 23:09:05,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory is still 303.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.97ms. Allocated memory is still 530.6MB. Free memory was 481.5MB in the beginning and 470.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.04ms. Allocated memory is still 530.6MB. Free memory was 470.6MB in the beginning and 469.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 18.33ms. Allocated memory is still 530.6MB. Free memory was 469.3MB in the beginning and 468.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 306.52ms. Allocated memory is still 530.6MB. Free memory was 468.1MB in the beginning and 455.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 16619.52ms. Allocated memory was 530.6MB in the beginning and 637.5MB in the end (delta: 107.0MB). Free memory was 455.0MB in the beginning and 481.3MB in the end (delta: -26.2MB). Peak memory consumption was 82.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 72 PlacesBefore, 20 PlacesAfterwards, 71 TransitionsBefore, 15 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 66 TotalNumberOfCompositions, 581 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 552, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 305, independent: 303, independent conditional: 0, independent unconditional: 303, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 552, independent: 237, independent conditional: 0, independent unconditional: 237, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 305, unknown conditional: 0, unknown unconditional: 305] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 79]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 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: 16.4s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 764 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 764 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4423 IncrementalHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 0 mSDtfsCounter, 4423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 581 GetRequests, 253 SyntacticMatches, 34 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=967occurred in iteration=15, InterpolantAutomatonStates: 209, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 542 NumberOfCodeBlocks, 542 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 4322 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1428 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 49 InterpolantComputations, 19 PerfectInterpolantSequences, 14/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:09:05,164 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...