/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/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:21:48,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:21:48,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:21:48,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:21:48,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:21:48,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:21:48,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:21:48,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:21:48,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:21:48,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:21:48,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:21:48,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:21:48,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:21:48,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:21:48,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:21:48,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:21:48,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:21:48,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:21:48,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:21:48,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:21:48,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:21:48,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:21:48,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:21:48,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:21:48,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:21:48,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:21:48,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:21:48,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:21:48,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:21:48,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:21:48,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:21:48,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:21:48,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:21:48,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:21:48,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:21:48,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:21:48,518 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 21:21:48,545 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:21:48,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:21:48,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:21:48,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:21:48,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:21:48,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:21:48,548 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:21:48,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:21:48,548 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:21:48,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:21:48,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:21:48,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:21:48,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:21:48,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:21:48,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:21:48,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:21:48,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:21:48,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:21:48,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:21:48,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:21:48,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:21:48,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:21:48,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:21:48,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:21:48,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:21:48,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:21:48,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:21:48,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:21:48,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:21:48,833 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:21:48,834 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:21:48,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-01-27 21:21:50,062 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:21:50,287 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:21:50,288 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-01-27 21:21:50,294 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6e0fa8b/8be9c768000b4f8ca058c645da8bc000/FLAG02c5ca4e5 [2023-01-27 21:21:50,311 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6e0fa8b/8be9c768000b4f8ca058c645da8bc000 [2023-01-27 21:21:50,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:21:50,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:21:50,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:21:50,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:21:50,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:21:50,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fba3b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50, skipping insertion in model container [2023-01-27 21:21:50,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:21:50,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:21:50,527 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/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2023-01-27 21:21:50,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:21:50,545 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:21:50,581 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/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2023-01-27 21:21:50,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:21:50,588 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:21:50,588 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:21:50,598 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:21:50,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50 WrapperNode [2023-01-27 21:21:50,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:21:50,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:21:50,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:21:50,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:21:50,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,641 INFO L138 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-01-27 21:21:50,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:21:50,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:21:50,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:21:50,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:21:50,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:21:50,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:21:50,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:21:50,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:21:50,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (1/1) ... [2023-01-27 21:21:50,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:21:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:21:50,710 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 21:21:50,718 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 21:21:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:21:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:21:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:21:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:21:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:21:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:21:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:21:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:21:50,746 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 21:21:50,821 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:21:50,823 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:21:50,975 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:21:51,057 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:21:51,058 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 21:21:51,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:21:51 BoogieIcfgContainer [2023-01-27 21:21:51,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:21:51,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:21:51,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:21:51,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:21:51,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:21:50" (1/3) ... [2023-01-27 21:21:51,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0a933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:21:51, skipping insertion in model container [2023-01-27 21:21:51,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:21:50" (2/3) ... [2023-01-27 21:21:51,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0a933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:21:51, skipping insertion in model container [2023-01-27 21:21:51,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:21:51" (3/3) ... [2023-01-27 21:21:51,071 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-01-27 21:21:51,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:21:51,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:21:51,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:21:51,199 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 21:21:51,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 182 flow [2023-01-27 21:21:51,310 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2023-01-27 21:21:51,310 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 21:21:51,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 6/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-01-27 21:21:51,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 182 flow [2023-01-27 21:21:51,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 158 flow [2023-01-27 21:21:51,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:21:51,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 73 transitions, 158 flow [2023-01-27 21:21:51,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 73 transitions, 158 flow [2023-01-27 21:21:51,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 158 flow [2023-01-27 21:21:51,362 INFO L130 PetriNetUnfolder]: 6/73 cut-off events. [2023-01-27 21:21:51,362 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 21:21:51,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 6/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-01-27 21:21:51,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-01-27 21:21:53,540 INFO L134 LiptonReduction]: Checked pairs total: 617 [2023-01-27 21:21:53,540 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-01-27 21:21:53,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:21:53,558 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;@4d87044f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:21:53,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 21:21:53,562 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-01-27 21:21:53,563 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 21:21:53,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:21:53,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:21:53,564 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 21:21:53,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:21:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1488220568, now seen corresponding path program 1 times [2023-01-27 21:21:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:21:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476507731] [2023-01-27 21:21:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:53,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:21:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:21:54,119 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 21:21:54,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:21:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476507731] [2023-01-27 21:21:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476507731] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:21:54,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:21:54,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:21:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737149249] [2023-01-27 21:21:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:21:54,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:21:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:21:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:21:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:21:54,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-27 21:21:54,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 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 21:21:54,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:21:54,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-27 21:21:54,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:21:54,275 INFO L130 PetriNetUnfolder]: 88/157 cut-off events. [2023-01-27 21:21:54,275 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-27 21:21:54,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 157 events. 88/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 18 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 270. Up to 120 conditions per place. [2023-01-27 21:21:54,278 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 28 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-01-27 21:21:54,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 33 transitions, 153 flow [2023-01-27 21:21:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:21:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:21:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-01-27 21:21:54,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2023-01-27 21:21:54,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-01-27 21:21:54,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-01-27 21:21:54,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:21:54,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-01-27 21:21:54,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 21:21:54,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 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 21:21:54,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 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 21:21:54,304 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 4 states and 266 transitions. [2023-01-27 21:21:54,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 33 transitions, 153 flow [2023-01-27 21:21:54,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 21:21:54,309 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 70 flow [2023-01-27 21:21:54,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-01-27 21:21:54,314 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-01-27 21:21:54,314 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 70 flow [2023-01-27 21:21:54,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 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 21:21:54,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:21:54,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:21:54,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:21:54,315 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 21:21:54,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:21:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash 772847751, now seen corresponding path program 1 times [2023-01-27 21:21:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:21:54,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027552041] [2023-01-27 21:21:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:21:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:21:54,676 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 21:21:54,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:21:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027552041] [2023-01-27 21:21:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027552041] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:21:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604428285] [2023-01-27 21:21:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:54,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:21:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:21:54,679 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 21:21:54,685 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 21:21:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:21:54,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 21:21:54,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:21:55,115 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 21:21:55,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:21:55,383 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 21:21:55,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604428285] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:21:55,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:21:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2023-01-27 21:21:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19285193] [2023-01-27 21:21:55,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:21:55,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:21:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:21:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:21:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:21:55,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 148 [2023-01-27 21:21:55,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 70 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 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 21:21:55,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:21:55,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 148 [2023-01-27 21:21:55,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:21:55,628 INFO L130 PetriNetUnfolder]: 111/200 cut-off events. [2023-01-27 21:21:55,628 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-27 21:21:55,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 200 events. 111/200 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 4 based on Foata normal form. 20/202 useless extension candidates. Maximal degree in co-relation 161. Up to 66 conditions per place. [2023-01-27 21:21:55,634 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 44 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2023-01-27 21:21:55,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 307 flow [2023-01-27 21:21:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:21:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:21:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 740 transitions. [2023-01-27 21:21:55,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-27 21:21:55,641 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 740 transitions. [2023-01-27 21:21:55,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 740 transitions. [2023-01-27 21:21:55,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:21:55,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 740 transitions. [2023-01-27 21:21:55,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.666666666666664) internal successors, (740), 12 states have internal predecessors, (740), 0 states have call successors, (0), 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 21:21:55,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 148.0) internal successors, (1924), 13 states have internal predecessors, (1924), 0 states have call successors, (0), 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 21:21:55,651 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 148.0) internal successors, (1924), 13 states have internal predecessors, (1924), 0 states have call successors, (0), 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 21:21:55,651 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 70 flow. Second operand 12 states and 740 transitions. [2023-01-27 21:21:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 307 flow [2023-01-27 21:21:55,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 21:21:55,654 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 174 flow [2023-01-27 21:21:55,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-01-27 21:21:55,655 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 18 predicate places. [2023-01-27 21:21:55,655 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 174 flow [2023-01-27 21:21:55,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 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 21:21:55,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:21:55,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:21:55,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 21:21:55,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:21:55,862 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 21:21:55,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:21:55,863 INFO L85 PathProgramCache]: Analyzing trace with hash -800121287, now seen corresponding path program 1 times [2023-01-27 21:21:55,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:21:55,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414603262] [2023-01-27 21:21:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:55,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:21:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:21:56,511 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 21:21:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:21:56,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414603262] [2023-01-27 21:21:56,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414603262] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:21:56,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097686564] [2023-01-27 21:21:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:56,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:21:56,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:21:56,518 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 21:21:56,541 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 21:21:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:21:56,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 21:21:56,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:21:57,025 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 21:21:57,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:21:57,387 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 21:21:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097686564] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:21:57,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:21:57,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-01-27 21:21:57,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276537023] [2023-01-27 21:21:57,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:21:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 21:21:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:21:57,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 21:21:57,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-01-27 21:21:57,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:21:57,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 174 flow. Second operand has 20 states, 20 states have (on average 54.25) internal successors, (1085), 20 states have internal predecessors, (1085), 0 states have call successors, (0), 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 21:21:57,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:21:57,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:21:57,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:21:59,217 INFO L130 PetriNetUnfolder]: 429/757 cut-off events. [2023-01-27 21:21:59,217 INFO L131 PetriNetUnfolder]: For 1007/1007 co-relation queries the response was YES. [2023-01-27 21:21:59,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 757 events. 429/757 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3329 event pairs, 12 based on Foata normal form. 5/762 useless extension candidates. Maximal degree in co-relation 1497. Up to 203 conditions per place. [2023-01-27 21:21:59,222 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 97 selfloop transitions, 94 changer transitions 34/225 dead transitions. [2023-01-27 21:21:59,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 225 transitions, 1551 flow [2023-01-27 21:21:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-27 21:21:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-27 21:21:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2121 transitions. [2023-01-27 21:21:59,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38732651570489407 [2023-01-27 21:21:59,229 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2121 transitions. [2023-01-27 21:21:59,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2121 transitions. [2023-01-27 21:21:59,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:21:59,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2121 transitions. [2023-01-27 21:21:59,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.32432432432432) internal successors, (2121), 37 states have internal predecessors, (2121), 0 states have call successors, (0), 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 21:21:59,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 148.0) internal successors, (5624), 38 states have internal predecessors, (5624), 0 states have call successors, (0), 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 21:21:59,245 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 148.0) internal successors, (5624), 38 states have internal predecessors, (5624), 0 states have call successors, (0), 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 21:21:59,245 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 174 flow. Second operand 37 states and 2121 transitions. [2023-01-27 21:21:59,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 225 transitions, 1551 flow [2023-01-27 21:21:59,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 225 transitions, 1496 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-27 21:21:59,258 INFO L231 Difference]: Finished difference. Result has 92 places, 127 transitions, 1097 flow [2023-01-27 21:21:59,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1097, PETRI_PLACES=92, PETRI_TRANSITIONS=127} [2023-01-27 21:21:59,259 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 70 predicate places. [2023-01-27 21:21:59,259 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 127 transitions, 1097 flow [2023-01-27 21:21:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.25) internal successors, (1085), 20 states have internal predecessors, (1085), 0 states have call successors, (0), 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 21:21:59,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:21:59,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:21:59,269 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 21:21:59,473 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,SelfDestructingSolverStorable2 [2023-01-27 21:21:59,473 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 21:21:59,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:21:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1631516584, now seen corresponding path program 2 times [2023-01-27 21:21:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:21:59,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365857559] [2023-01-27 21:21:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:59,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:21:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:21:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:21:59,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:21:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365857559] [2023-01-27 21:21:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365857559] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:21:59,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:21:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:21:59,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392615482] [2023-01-27 21:21:59,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:21:59,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:21:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:21:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:21:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:21:59,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-27 21:21:59,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 127 transitions, 1097 flow. Second operand has 5 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 21:21:59,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:21:59,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-27 21:21:59,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:21:59,898 INFO L130 PetriNetUnfolder]: 503/890 cut-off events. [2023-01-27 21:21:59,899 INFO L131 PetriNetUnfolder]: For 4815/4815 co-relation queries the response was YES. [2023-01-27 21:21:59,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 890 events. 503/890 cut-off events. For 4815/4815 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4069 event pairs, 72 based on Foata normal form. 8/898 useless extension candidates. Maximal degree in co-relation 4308. Up to 343 conditions per place. [2023-01-27 21:21:59,908 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 148 selfloop transitions, 68 changer transitions 0/216 dead transitions. [2023-01-27 21:21:59,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 216 transitions, 2256 flow [2023-01-27 21:21:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:21:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:21:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 472 transitions. [2023-01-27 21:21:59,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2023-01-27 21:21:59,910 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 472 transitions. [2023-01-27 21:21:59,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 472 transitions. [2023-01-27 21:21:59,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:21:59,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 472 transitions. [2023-01-27 21:21:59,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 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 21:21:59,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 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 21:21:59,914 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 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 21:21:59,914 INFO L175 Difference]: Start difference. First operand has 92 places, 127 transitions, 1097 flow. Second operand 7 states and 472 transitions. [2023-01-27 21:21:59,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 216 transitions, 2256 flow [2023-01-27 21:21:59,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 216 transitions, 1915 flow, removed 156 selfloop flow, removed 11 redundant places. [2023-01-27 21:21:59,943 INFO L231 Difference]: Finished difference. Result has 88 places, 164 transitions, 1486 flow [2023-01-27 21:21:59,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1486, PETRI_PLACES=88, PETRI_TRANSITIONS=164} [2023-01-27 21:21:59,944 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 66 predicate places. [2023-01-27 21:21:59,944 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 164 transitions, 1486 flow [2023-01-27 21:21:59,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 21:21:59,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:21:59,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:21:59,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:21:59,945 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 21:21:59,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:21:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash 624053438, now seen corresponding path program 3 times [2023-01-27 21:21:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:21:59,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033891498] [2023-01-27 21:21:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:21:59,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:21:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:22:00,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:22:00,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033891498] [2023-01-27 21:22:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033891498] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:22:00,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:22:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:22:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541956217] [2023-01-27 21:22:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:22:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:22:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:22:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:22:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:22:00,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-27 21:22:00,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 164 transitions, 1486 flow. Second operand has 5 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 21:22:00,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:22:00,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-27 21:22:00,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:22:00,299 INFO L130 PetriNetUnfolder]: 497/872 cut-off events. [2023-01-27 21:22:00,300 INFO L131 PetriNetUnfolder]: For 5287/5287 co-relation queries the response was YES. [2023-01-27 21:22:00,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 872 events. 497/872 cut-off events. For 5287/5287 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3925 event pairs, 127 based on Foata normal form. 8/874 useless extension candidates. Maximal degree in co-relation 3701. Up to 501 conditions per place. [2023-01-27 21:22:00,309 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 142 selfloop transitions, 53 changer transitions 0/195 dead transitions. [2023-01-27 21:22:00,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 195 transitions, 2070 flow [2023-01-27 21:22:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:22:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:22:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2023-01-27 21:22:00,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2023-01-27 21:22:00,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 336 transitions. [2023-01-27 21:22:00,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 336 transitions. [2023-01-27 21:22:00,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:22:00,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 336 transitions. [2023-01-27 21:22:00,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 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 21:22:00,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 21:22:00,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 21:22:00,315 INFO L175 Difference]: Start difference. First operand has 88 places, 164 transitions, 1486 flow. Second operand 5 states and 336 transitions. [2023-01-27 21:22:00,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 195 transitions, 2070 flow [2023-01-27 21:22:00,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 2030 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-01-27 21:22:00,350 INFO L231 Difference]: Finished difference. Result has 94 places, 166 transitions, 1656 flow [2023-01-27 21:22:00,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1656, PETRI_PLACES=94, PETRI_TRANSITIONS=166} [2023-01-27 21:22:00,353 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 72 predicate places. [2023-01-27 21:22:00,353 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 166 transitions, 1656 flow [2023-01-27 21:22:00,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 21:22:00,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:22:00,354 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:22:00,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:22:00,354 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 21:22:00,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:22:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1966469734, now seen corresponding path program 4 times [2023-01-27 21:22:00,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:22:00,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766588602] [2023-01-27 21:22:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:22:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:22:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:22:00,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:22:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766588602] [2023-01-27 21:22:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766588602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:22:00,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:22:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:22:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925071431] [2023-01-27 21:22:00,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:22:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 21:22:00,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:22:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 21:22:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 21:22:00,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-27 21:22:00,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 166 transitions, 1656 flow. Second operand has 5 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 21:22:00,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:22:00,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-27 21:22:00,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:22:00,767 INFO L130 PetriNetUnfolder]: 495/858 cut-off events. [2023-01-27 21:22:00,768 INFO L131 PetriNetUnfolder]: For 5709/5709 co-relation queries the response was YES. [2023-01-27 21:22:00,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 858 events. 495/858 cut-off events. For 5709/5709 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3792 event pairs, 76 based on Foata normal form. 4/856 useless extension candidates. Maximal degree in co-relation 3851. Up to 343 conditions per place. [2023-01-27 21:22:00,775 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 135 selfloop transitions, 67 changer transitions 0/202 dead transitions. [2023-01-27 21:22:00,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 202 transitions, 2263 flow [2023-01-27 21:22:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:22:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:22:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-01-27 21:22:00,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581081081081081 [2023-01-27 21:22:00,777 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-01-27 21:22:00,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-01-27 21:22:00,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:22:00,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-01-27 21:22:00,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 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 21:22:00,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 21:22:00,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 21:22:00,780 INFO L175 Difference]: Start difference. First operand has 94 places, 166 transitions, 1656 flow. Second operand 5 states and 339 transitions. [2023-01-27 21:22:00,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 202 transitions, 2263 flow [2023-01-27 21:22:00,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 202 transitions, 2235 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-27 21:22:00,810 INFO L231 Difference]: Finished difference. Result has 96 places, 165 transitions, 1745 flow [2023-01-27 21:22:00,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1745, PETRI_PLACES=96, PETRI_TRANSITIONS=165} [2023-01-27 21:22:00,811 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2023-01-27 21:22:00,811 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 165 transitions, 1745 flow [2023-01-27 21:22:00,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 21:22:00,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:22:00,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:22:00,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:22:00,812 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 21:22:00,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:22:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -722109947, now seen corresponding path program 1 times [2023-01-27 21:22:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:22:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510172506] [2023-01-27 21:22:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:22:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:22:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:02,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:22:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510172506] [2023-01-27 21:22:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510172506] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:22:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171065081] [2023-01-27 21:22:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:22:02,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:02,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:22:02,240 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 21:22:02,243 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 21:22:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:02,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 21:22:02,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:22:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:03,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:22:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171065081] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:22:04,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:22:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-01-27 21:22:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397006037] [2023-01-27 21:22:04,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:22:04,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:22:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:22:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:22:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:22:04,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:22:04,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 165 transitions, 1745 flow. Second operand has 25 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 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 21:22:04,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:22:04,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:22:04,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:22:13,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:22:16,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:22:20,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 21:22:28,765 INFO L130 PetriNetUnfolder]: 1243/2184 cut-off events. [2023-01-27 21:22:28,765 INFO L131 PetriNetUnfolder]: For 13949/13949 co-relation queries the response was YES. [2023-01-27 21:22:28,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11497 conditions, 2184 events. 1243/2184 cut-off events. For 13949/13949 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12195 event pairs, 0 based on Foata normal form. 10/2188 useless extension candidates. Maximal degree in co-relation 10883. Up to 435 conditions per place. [2023-01-27 21:22:28,779 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 238 selfloop transitions, 311 changer transitions 92/641 dead transitions. [2023-01-27 21:22:28,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 641 transitions, 7327 flow [2023-01-27 21:22:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-27 21:22:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-27 21:22:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3594 transitions. [2023-01-27 21:22:28,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38545688545688545 [2023-01-27 21:22:28,790 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3594 transitions. [2023-01-27 21:22:28,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3594 transitions. [2023-01-27 21:22:28,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:22:28,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3594 transitions. [2023-01-27 21:22:28,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 57.04761904761905) internal successors, (3594), 63 states have internal predecessors, (3594), 0 states have call successors, (0), 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 21:22:28,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 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 21:22:28,811 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 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 21:22:28,811 INFO L175 Difference]: Start difference. First operand has 96 places, 165 transitions, 1745 flow. Second operand 63 states and 3594 transitions. [2023-01-27 21:22:28,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 641 transitions, 7327 flow [2023-01-27 21:22:28,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 641 transitions, 6935 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 21:22:28,897 INFO L231 Difference]: Finished difference. Result has 179 places, 392 transitions, 4964 flow [2023-01-27 21:22:28,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=4964, PETRI_PLACES=179, PETRI_TRANSITIONS=392} [2023-01-27 21:22:28,898 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 157 predicate places. [2023-01-27 21:22:28,898 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 392 transitions, 4964 flow [2023-01-27 21:22:28,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 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 21:22:28,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:22:28,899 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:22:28,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 21:22:29,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:29,104 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 21:22:29,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:22:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1771081357, now seen corresponding path program 2 times [2023-01-27 21:22:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:22:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910181008] [2023-01-27 21:22:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:22:29,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:22:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:22:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910181008] [2023-01-27 21:22:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910181008] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:22:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755812319] [2023-01-27 21:22:29,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:22:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:22:29,849 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 21:22:29,853 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 21:22:29,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:22:29,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:22:29,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 21:22:29,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:22:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:30,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:22:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755812319] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:22:31,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:22:31,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2023-01-27 21:22:31,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968464480] [2023-01-27 21:22:31,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:22:31,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 21:22:31,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:22:31,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 21:22:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-01-27 21:22:31,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 148 [2023-01-27 21:22:31,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 392 transitions, 4964 flow. Second operand has 25 states, 25 states have (on average 56.28) internal successors, (1407), 25 states have internal predecessors, (1407), 0 states have call successors, (0), 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 21:22:31,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:22:31,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 148 [2023-01-27 21:22:31,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:22:42,646 INFO L130 PetriNetUnfolder]: 1839/3229 cut-off events. [2023-01-27 21:22:42,646 INFO L131 PetriNetUnfolder]: For 24471/24471 co-relation queries the response was YES. [2023-01-27 21:22:42,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19022 conditions, 3229 events. 1839/3229 cut-off events. For 24471/24471 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19456 event pairs, 15 based on Foata normal form. 13/3238 useless extension candidates. Maximal degree in co-relation 18902. Up to 812 conditions per place. [2023-01-27 21:22:42,676 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 298 selfloop transitions, 456 changer transitions 113/867 dead transitions. [2023-01-27 21:22:42,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 867 transitions, 11557 flow [2023-01-27 21:22:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-27 21:22:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-27 21:22:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3447 transitions. [2023-01-27 21:22:42,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40156104380242313 [2023-01-27 21:22:42,682 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3447 transitions. [2023-01-27 21:22:42,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3447 transitions. [2023-01-27 21:22:42,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:22:42,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3447 transitions. [2023-01-27 21:22:42,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 59.43103448275862) internal successors, (3447), 58 states have internal predecessors, (3447), 0 states have call successors, (0), 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 21:22:42,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 21:22:42,698 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 21:22:42,698 INFO L175 Difference]: Start difference. First operand has 179 places, 392 transitions, 4964 flow. Second operand 58 states and 3447 transitions. [2023-01-27 21:22:42,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 867 transitions, 11557 flow [2023-01-27 21:22:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 867 transitions, 11327 flow, removed 107 selfloop flow, removed 12 redundant places. [2023-01-27 21:22:42,903 INFO L231 Difference]: Finished difference. Result has 242 places, 607 transitions, 9382 flow [2023-01-27 21:22:42,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=4814, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=9382, PETRI_PLACES=242, PETRI_TRANSITIONS=607} [2023-01-27 21:22:42,903 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 220 predicate places. [2023-01-27 21:22:42,904 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 607 transitions, 9382 flow [2023-01-27 21:22:42,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.28) internal successors, (1407), 25 states have internal predecessors, (1407), 0 states have call successors, (0), 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 21:22:42,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:22:42,904 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:22:42,909 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 21:22:43,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:43,105 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 21:22:43,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:22:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash -567010117, now seen corresponding path program 3 times [2023-01-27 21:22:43,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:22:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872714328] [2023-01-27 21:22:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:22:43,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:22:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:22:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872714328] [2023-01-27 21:22:43,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872714328] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:22:43,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568536999] [2023-01-27 21:22:43,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:22:43,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:43,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:22:43,236 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 21:22:43,243 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 21:22:43,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 21:22:43,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:22:43,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 21:22:43,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:22:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:43,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:22:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568536999] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:22:43,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:22:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2023-01-27 21:22:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389783549] [2023-01-27 21:22:43,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:22:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:22:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:22:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:22:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:22:43,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-27 21:22:43,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 607 transitions, 9382 flow. Second operand has 10 states, 10 states have (on average 61.4) internal successors, (614), 10 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:22:43,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:22:43,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-27 21:22:43,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:22:44,597 INFO L130 PetriNetUnfolder]: 2351/4022 cut-off events. [2023-01-27 21:22:44,597 INFO L131 PetriNetUnfolder]: For 41312/41312 co-relation queries the response was YES. [2023-01-27 21:22:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26861 conditions, 4022 events. 2351/4022 cut-off events. For 41312/41312 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24700 event pairs, 51 based on Foata normal form. 34/4048 useless extension candidates. Maximal degree in co-relation 26701. Up to 842 conditions per place. [2023-01-27 21:22:44,633 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 330 selfloop transitions, 632 changer transitions 0/962 dead transitions. [2023-01-27 21:22:44,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 962 transitions, 16304 flow [2023-01-27 21:22:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 21:22:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 21:22:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2023-01-27 21:22:44,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412681912681913 [2023-01-27 21:22:44,635 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2023-01-27 21:22:44,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2023-01-27 21:22:44,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:22:44,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2023-01-27 21:22:44,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:22:44,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 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 21:22:44,638 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 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 21:22:44,638 INFO L175 Difference]: Start difference. First operand has 242 places, 607 transitions, 9382 flow. Second operand 13 states and 849 transitions. [2023-01-27 21:22:44,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 962 transitions, 16304 flow [2023-01-27 21:22:44,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 962 transitions, 15883 flow, removed 179 selfloop flow, removed 26 redundant places. [2023-01-27 21:22:45,000 INFO L231 Difference]: Finished difference. Result has 222 places, 837 transitions, 14953 flow [2023-01-27 21:22:45,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=9107, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14953, PETRI_PLACES=222, PETRI_TRANSITIONS=837} [2023-01-27 21:22:45,001 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 200 predicate places. [2023-01-27 21:22:45,001 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 837 transitions, 14953 flow [2023-01-27 21:22:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.4) internal successors, (614), 10 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:22:45,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:22:45,002 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:22:45,007 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 21:22:45,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:45,207 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 21:22:45,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:22:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash -319686935, now seen corresponding path program 4 times [2023-01-27 21:22:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:22:45,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908235111] [2023-01-27 21:22:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:22:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:22:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:22:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:46,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:22:46,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908235111] [2023-01-27 21:22:46,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908235111] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:22:46,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992361936] [2023-01-27 21:22:46,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:22:46,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:22:46,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:22:46,308 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 21:22:46,309 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 21:22:46,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:22:46,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:22:46,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 21:22:46,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:22:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:47,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:22:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:22:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992361936] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:22:48,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:22:48,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2023-01-27 21:22:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835449945] [2023-01-27 21:22:48,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:22:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 21:22:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:22:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 21:22:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-01-27 21:22:48,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:22:48,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 837 transitions, 14953 flow. Second operand has 27 states, 27 states have (on average 54.111111111111114) internal successors, (1461), 27 states have internal predecessors, (1461), 0 states have call successors, (0), 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 21:22:48,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:22:48,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:22:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:23:04,311 INFO L130 PetriNetUnfolder]: 3077/5345 cut-off events. [2023-01-27 21:23:04,311 INFO L131 PetriNetUnfolder]: For 67791/67791 co-relation queries the response was YES. [2023-01-27 21:23:04,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39243 conditions, 5345 events. 3077/5345 cut-off events. For 67791/67791 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35407 event pairs, 18 based on Foata normal form. 15/5350 useless extension candidates. Maximal degree in co-relation 38515. Up to 1977 conditions per place. [2023-01-27 21:23:04,354 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 462 selfloop transitions, 731 changer transitions 106/1299 dead transitions. [2023-01-27 21:23:04,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1299 transitions, 23674 flow [2023-01-27 21:23:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-01-27 21:23:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-01-27 21:23:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3801 transitions. [2023-01-27 21:23:04,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833198870512303 [2023-01-27 21:23:04,360 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 3801 transitions. [2023-01-27 21:23:04,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 3801 transitions. [2023-01-27 21:23:04,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:23:04,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 3801 transitions. [2023-01-27 21:23:04,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 56.73134328358209) internal successors, (3801), 67 states have internal predecessors, (3801), 0 states have call successors, (0), 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 21:23:04,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 148.0) internal successors, (10064), 68 states have internal predecessors, (10064), 0 states have call successors, (0), 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 21:23:04,378 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 148.0) internal successors, (10064), 68 states have internal predecessors, (10064), 0 states have call successors, (0), 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 21:23:04,378 INFO L175 Difference]: Start difference. First operand has 222 places, 837 transitions, 14953 flow. Second operand 67 states and 3801 transitions. [2023-01-27 21:23:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1299 transitions, 23674 flow [2023-01-27 21:23:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1299 transitions, 22880 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-01-27 21:23:05,023 INFO L231 Difference]: Finished difference. Result has 312 places, 1042 transitions, 21007 flow [2023-01-27 21:23:05,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=14361, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=546, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=21007, PETRI_PLACES=312, PETRI_TRANSITIONS=1042} [2023-01-27 21:23:05,024 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 290 predicate places. [2023-01-27 21:23:05,024 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 1042 transitions, 21007 flow [2023-01-27 21:23:05,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 54.111111111111114) internal successors, (1461), 27 states have internal predecessors, (1461), 0 states have call successors, (0), 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 21:23:05,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:23:05,025 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:23:05,029 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 21:23:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:23:05,226 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 21:23:05,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:23:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1054529367, now seen corresponding path program 5 times [2023-01-27 21:23:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:23:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696428400] [2023-01-27 21:23:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:23:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:23:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:23:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:23:06,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:23:06,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696428400] [2023-01-27 21:23:06,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696428400] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:23:06,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658188613] [2023-01-27 21:23:06,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:23:06,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:23:06,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:23:06,554 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 21:23:06,555 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 21:23:06,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 21:23:06,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:23:06,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 21:23:06,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:23:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:23:07,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:23:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:23:08,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658188613] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:23:08,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:23:08,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-01-27 21:23:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24269402] [2023-01-27 21:23:08,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:23:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-27 21:23:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:23:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-27 21:23:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-01-27 21:23:08,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:23:08,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1042 transitions, 21007 flow. Second operand has 26 states, 26 states have (on average 54.19230769230769) internal successors, (1409), 26 states have internal predecessors, (1409), 0 states have call successors, (0), 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 21:23:08,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:23:08,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:23:08,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:23:45,335 INFO L130 PetriNetUnfolder]: 3815/6634 cut-off events. [2023-01-27 21:23:45,336 INFO L131 PetriNetUnfolder]: For 107596/107596 co-relation queries the response was YES. [2023-01-27 21:23:45,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52929 conditions, 6634 events. 3815/6634 cut-off events. For 107596/107596 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 46000 event pairs, 16 based on Foata normal form. 18/6642 useless extension candidates. Maximal degree in co-relation 52752. Up to 2374 conditions per place. [2023-01-27 21:23:45,426 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 495 selfloop transitions, 1029 changer transitions 137/1661 dead transitions. [2023-01-27 21:23:45,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1661 transitions, 33858 flow [2023-01-27 21:23:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-01-27 21:23:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-01-27 21:23:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4471 transitions. [2023-01-27 21:23:45,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38239822100581594 [2023-01-27 21:23:45,433 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4471 transitions. [2023-01-27 21:23:45,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4471 transitions. [2023-01-27 21:23:45,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:23:45,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4471 transitions. [2023-01-27 21:23:45,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 56.59493670886076) internal successors, (4471), 79 states have internal predecessors, (4471), 0 states have call successors, (0), 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 21:23:45,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 148.0) internal successors, (11840), 80 states have internal predecessors, (11840), 0 states have call successors, (0), 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 21:23:45,451 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 148.0) internal successors, (11840), 80 states have internal predecessors, (11840), 0 states have call successors, (0), 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 21:23:45,451 INFO L175 Difference]: Start difference. First operand has 312 places, 1042 transitions, 21007 flow. Second operand 79 states and 4471 transitions. [2023-01-27 21:23:45,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1661 transitions, 33858 flow [2023-01-27 21:23:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1661 transitions, 32422 flow, removed 297 selfloop flow, removed 25 redundant places. [2023-01-27 21:23:46,616 INFO L231 Difference]: Finished difference. Result has 385 places, 1353 transitions, 30461 flow [2023-01-27 21:23:46,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=20081, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1042, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=30461, PETRI_PLACES=385, PETRI_TRANSITIONS=1353} [2023-01-27 21:23:46,617 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 363 predicate places. [2023-01-27 21:23:46,617 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1353 transitions, 30461 flow [2023-01-27 21:23:46,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.19230769230769) internal successors, (1409), 26 states have internal predecessors, (1409), 0 states have call successors, (0), 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 21:23:46,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:23:46,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:23:46,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 21:23:46,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:23:46,818 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 21:23:46,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:23:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1208967995, now seen corresponding path program 6 times [2023-01-27 21:23:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:23:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269935445] [2023-01-27 21:23:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:23:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:23:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:23:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:23:47,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:23:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269935445] [2023-01-27 21:23:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269935445] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:23:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16921549] [2023-01-27 21:23:47,757 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 21:23:47,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:23:47,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:23:47,759 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 21:23:47,760 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 21:23:47,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 21:23:47,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:23:47,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 21:23:47,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:23:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:23:48,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:23:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:23:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16921549] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:23:49,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:23:49,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-27 21:23:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864308614] [2023-01-27 21:23:49,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:23:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:23:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:23:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:23:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:23:49,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:23:49,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1353 transitions, 30461 flow. Second operand has 31 states, 31 states have (on average 53.83870967741935) internal successors, (1669), 31 states have internal predecessors, (1669), 0 states have call successors, (0), 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 21:23:49,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:23:49,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:23:49,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:24:01,128 INFO L130 PetriNetUnfolder]: 3977/6905 cut-off events. [2023-01-27 21:24:01,128 INFO L131 PetriNetUnfolder]: For 138286/138286 co-relation queries the response was YES. [2023-01-27 21:24:01,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61621 conditions, 6905 events. 3977/6905 cut-off events. For 138286/138286 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 48109 event pairs, 6 based on Foata normal form. 13/6912 useless extension candidates. Maximal degree in co-relation 61371. Up to 2427 conditions per place. [2023-01-27 21:24:01,199 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 303 selfloop transitions, 1399 changer transitions 89/1791 dead transitions. [2023-01-27 21:24:01,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1791 transitions, 41197 flow [2023-01-27 21:24:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-27 21:24:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-27 21:24:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3283 transitions. [2023-01-27 21:24:01,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38245573159366264 [2023-01-27 21:24:01,204 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3283 transitions. [2023-01-27 21:24:01,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3283 transitions. [2023-01-27 21:24:01,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:24:01,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3283 transitions. [2023-01-27 21:24:01,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 56.60344827586207) internal successors, (3283), 58 states have internal predecessors, (3283), 0 states have call successors, (0), 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 21:24:01,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 21:24:01,216 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 21:24:01,216 INFO L175 Difference]: Start difference. First operand has 385 places, 1353 transitions, 30461 flow. Second operand 58 states and 3283 transitions. [2023-01-27 21:24:01,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1791 transitions, 41197 flow [2023-01-27 21:24:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1791 transitions, 40649 flow, removed 233 selfloop flow, removed 17 redundant places. [2023-01-27 21:24:03,038 INFO L231 Difference]: Finished difference. Result has 420 places, 1598 transitions, 40780 flow [2023-01-27 21:24:03,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=30093, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=40780, PETRI_PLACES=420, PETRI_TRANSITIONS=1598} [2023-01-27 21:24:03,039 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 398 predicate places. [2023-01-27 21:24:03,039 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1598 transitions, 40780 flow [2023-01-27 21:24:03,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.83870967741935) internal successors, (1669), 31 states have internal predecessors, (1669), 0 states have call successors, (0), 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 21:24:03,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:24:03,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:24:03,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 21:24:03,240 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,SelfDestructingSolverStorable11 [2023-01-27 21:24:03,240 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 21:24:03,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:24:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1594707129, now seen corresponding path program 7 times [2023-01-27 21:24:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:24:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370396946] [2023-01-27 21:24:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:24:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:24:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:24:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:24:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370396946] [2023-01-27 21:24:04,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370396946] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:24:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003097231] [2023-01-27 21:24:04,219 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:24:04,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:24:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:24:04,220 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 21:24:04,224 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 21:24:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:24:04,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-27 21:24:04,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:24:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:05,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:24:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:06,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003097231] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:24:06,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:24:06,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-27 21:24:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929755921] [2023-01-27 21:24:06,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:24:06,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:24:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:24:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:24:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:24:06,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:24:06,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1598 transitions, 40780 flow. Second operand has 30 states, 30 states have (on average 53.766666666666666) internal successors, (1613), 30 states have internal predecessors, (1613), 0 states have call successors, (0), 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 21:24:06,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:24:06,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:24:06,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:24:31,933 INFO L130 PetriNetUnfolder]: 4695/8116 cut-off events. [2023-01-27 21:24:31,933 INFO L131 PetriNetUnfolder]: For 198582/198582 co-relation queries the response was YES. [2023-01-27 21:24:31,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80276 conditions, 8116 events. 4695/8116 cut-off events. For 198582/198582 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 57755 event pairs, 10 based on Foata normal form. 12/8128 useless extension candidates. Maximal degree in co-relation 79988. Up to 1927 conditions per place. [2023-01-27 21:24:32,009 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 253 selfloop transitions, 1867 changer transitions 84/2204 dead transitions. [2023-01-27 21:24:32,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 2204 transitions, 56492 flow [2023-01-27 21:24:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-01-27 21:24:32,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-01-27 21:24:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4974 transitions. [2023-01-27 21:24:32,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819103194103194 [2023-01-27 21:24:32,016 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4974 transitions. [2023-01-27 21:24:32,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4974 transitions. [2023-01-27 21:24:32,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:24:32,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4974 transitions. [2023-01-27 21:24:32,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 56.52272727272727) internal successors, (4974), 88 states have internal predecessors, (4974), 0 states have call successors, (0), 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 21:24:32,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 148.0) internal successors, (13172), 89 states have internal predecessors, (13172), 0 states have call successors, (0), 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 21:24:32,032 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 148.0) internal successors, (13172), 89 states have internal predecessors, (13172), 0 states have call successors, (0), 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 21:24:32,032 INFO L175 Difference]: Start difference. First operand has 420 places, 1598 transitions, 40780 flow. Second operand 88 states and 4974 transitions. [2023-01-27 21:24:32,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 2204 transitions, 56492 flow [2023-01-27 21:24:34,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 2204 transitions, 55321 flow, removed 220 selfloop flow, removed 20 redundant places. [2023-01-27 21:24:34,708 INFO L231 Difference]: Finished difference. Result has 492 places, 1960 transitions, 53409 flow [2023-01-27 21:24:34,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40030, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=53409, PETRI_PLACES=492, PETRI_TRANSITIONS=1960} [2023-01-27 21:24:34,709 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 470 predicate places. [2023-01-27 21:24:34,709 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 1960 transitions, 53409 flow [2023-01-27 21:24:34,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.766666666666666) internal successors, (1613), 30 states have internal predecessors, (1613), 0 states have call successors, (0), 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 21:24:34,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:24:34,710 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:24:34,716 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 21:24:34,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-27 21:24:34,910 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 21:24:34,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:24:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash 808345547, now seen corresponding path program 5 times [2023-01-27 21:24:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:24:34,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763181872] [2023-01-27 21:24:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:24:34,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:24:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:24:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:24:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763181872] [2023-01-27 21:24:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763181872] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:24:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319973344] [2023-01-27 21:24:35,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:24:35,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:24:35,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:24:35,503 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 21:24:35,505 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 21:24:35,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 21:24:35,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:24:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-27 21:24:35,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:24:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:36,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:24:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:36,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319973344] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:24:36,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:24:36,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-27 21:24:36,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234096338] [2023-01-27 21:24:36,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:24:36,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:24:36,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:24:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:24:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:24:36,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:24:36,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 1960 transitions, 53409 flow. Second operand has 30 states, 30 states have (on average 53.7) internal successors, (1611), 30 states have internal predecessors, (1611), 0 states have call successors, (0), 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 21:24:36,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:24:36,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:24:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:24:47,489 INFO L130 PetriNetUnfolder]: 5939/10335 cut-off events. [2023-01-27 21:24:47,489 INFO L131 PetriNetUnfolder]: For 263793/263793 co-relation queries the response was YES. [2023-01-27 21:24:47,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107697 conditions, 10335 events. 5939/10335 cut-off events. For 263793/263793 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 77089 event pairs, 60 based on Foata normal form. 19/10354 useless extension candidates. Maximal degree in co-relation 107331. Up to 2374 conditions per place. [2023-01-27 21:24:47,593 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 377 selfloop transitions, 2315 changer transitions 114/2806 dead transitions. [2023-01-27 21:24:47,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 2806 transitions, 78091 flow [2023-01-27 21:24:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-27 21:24:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-27 21:24:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 4298 transitions. [2023-01-27 21:24:47,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38211237553342814 [2023-01-27 21:24:47,599 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 4298 transitions. [2023-01-27 21:24:47,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 4298 transitions. [2023-01-27 21:24:47,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:24:47,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 4298 transitions. [2023-01-27 21:24:47,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 56.55263157894737) internal successors, (4298), 76 states have internal predecessors, (4298), 0 states have call successors, (0), 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 21:24:47,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 148.0) internal successors, (11396), 77 states have internal predecessors, (11396), 0 states have call successors, (0), 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 21:24:47,612 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 148.0) internal successors, (11396), 77 states have internal predecessors, (11396), 0 states have call successors, (0), 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 21:24:47,613 INFO L175 Difference]: Start difference. First operand has 492 places, 1960 transitions, 53409 flow. Second operand 76 states and 4298 transitions. [2023-01-27 21:24:47,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 2806 transitions, 78091 flow [2023-01-27 21:24:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 2806 transitions, 76525 flow, removed 506 selfloop flow, removed 26 redundant places. [2023-01-27 21:24:52,128 INFO L231 Difference]: Finished difference. Result has 561 places, 2561 transitions, 75141 flow [2023-01-27 21:24:52,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=52402, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1729, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=75141, PETRI_PLACES=561, PETRI_TRANSITIONS=2561} [2023-01-27 21:24:52,130 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 539 predicate places. [2023-01-27 21:24:52,130 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 2561 transitions, 75141 flow [2023-01-27 21:24:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.7) internal successors, (1611), 30 states have internal predecessors, (1611), 0 states have call successors, (0), 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 21:24:52,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:24:52,131 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:24:52,136 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 21:24:52,332 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,SelfDestructingSolverStorable13 [2023-01-27 21:24:52,333 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 21:24:52,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:24:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash 488184972, now seen corresponding path program 8 times [2023-01-27 21:24:52,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:24:52,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935461084] [2023-01-27 21:24:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:24:52,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:24:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:24:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:24:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935461084] [2023-01-27 21:24:54,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935461084] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:24:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896438470] [2023-01-27 21:24:54,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:24:54,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:24:54,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:24:54,165 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 21:24:54,167 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 21:24:54,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:24:54,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:24:54,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-27 21:24:54,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:24:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:24:55,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:25:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:25:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896438470] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:25:05,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:25:05,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-01-27 21:25:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669697148] [2023-01-27 21:25:05,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:25:05,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 21:25:05,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:25:05,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 21:25:05,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2023-01-27 21:25:05,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:25:05,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 2561 transitions, 75141 flow. Second operand has 29 states, 29 states have (on average 54.172413793103445) internal successors, (1571), 29 states have internal predecessors, (1571), 0 states have call successors, (0), 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 21:25:05,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:25:05,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:25:05,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:25:12,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:26:12,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:26:34,589 INFO L130 PetriNetUnfolder]: 7075/12358 cut-off events. [2023-01-27 21:26:34,589 INFO L131 PetriNetUnfolder]: For 362801/362801 co-relation queries the response was YES. [2023-01-27 21:26:34,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141291 conditions, 12358 events. 7075/12358 cut-off events. For 362801/362801 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 93773 event pairs, 4 based on Foata normal form. 32/12390 useless extension candidates. Maximal degree in co-relation 140971. Up to 4571 conditions per place. [2023-01-27 21:26:34,762 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 1216 selfloop transitions, 2060 changer transitions 223/3499 dead transitions. [2023-01-27 21:26:34,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 3499 transitions, 103507 flow [2023-01-27 21:26:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-01-27 21:26:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-01-27 21:26:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 5277 transitions. [2023-01-27 21:26:34,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833914559721011 [2023-01-27 21:26:34,769 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 5277 transitions. [2023-01-27 21:26:34,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 5277 transitions. [2023-01-27 21:26:34,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:26:34,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 5277 transitions. [2023-01-27 21:26:34,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 56.74193548387097) internal successors, (5277), 93 states have internal predecessors, (5277), 0 states have call successors, (0), 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 21:26:34,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 148.0) internal successors, (13912), 94 states have internal predecessors, (13912), 0 states have call successors, (0), 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 21:26:34,786 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 148.0) internal successors, (13912), 94 states have internal predecessors, (13912), 0 states have call successors, (0), 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 21:26:34,786 INFO L175 Difference]: Start difference. First operand has 561 places, 2561 transitions, 75141 flow. Second operand 93 states and 5277 transitions. [2023-01-27 21:26:34,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 3499 transitions, 103507 flow [2023-01-27 21:26:44,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 3499 transitions, 100084 flow, removed 569 selfloop flow, removed 25 redundant places. [2023-01-27 21:26:44,498 INFO L231 Difference]: Finished difference. Result has 667 places, 3022 transitions, 95128 flow [2023-01-27 21:26:44,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=72702, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1674, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=95128, PETRI_PLACES=667, PETRI_TRANSITIONS=3022} [2023-01-27 21:26:44,502 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 645 predicate places. [2023-01-27 21:26:44,502 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 3022 transitions, 95128 flow [2023-01-27 21:26:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 54.172413793103445) internal successors, (1571), 29 states have internal predecessors, (1571), 0 states have call successors, (0), 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 21:26:44,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:26:44,502 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:26:44,510 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 21:26:44,708 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,SelfDestructingSolverStorable14 [2023-01-27 21:26:44,708 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 21:26:44,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:26:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1690291124, now seen corresponding path program 9 times [2023-01-27 21:26:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:26:44,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262625119] [2023-01-27 21:26:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:26:44,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:26:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:26:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:26:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:26:45,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262625119] [2023-01-27 21:26:45,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262625119] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:26:45,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945407645] [2023-01-27 21:26:45,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:26:45,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:26:45,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:26:45,705 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 21:26:45,709 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 21:26:45,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 21:26:45,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:26:45,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 21:26:45,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:26:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:26:46,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:26:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:26:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945407645] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:26:48,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:26:48,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-27 21:26:48,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707087742] [2023-01-27 21:26:48,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:26:48,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:26:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:26:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:26:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:26:48,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 148 [2023-01-27 21:26:48,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 3022 transitions, 95128 flow. Second operand has 31 states, 31 states have (on average 56.03225806451613) internal successors, (1737), 31 states have internal predecessors, (1737), 0 states have call successors, (0), 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 21:26:48,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:26:48,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 148 [2023-01-27 21:26:48,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:27:16,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-27 21:27:32,468 INFO L130 PetriNetUnfolder]: 7520/13076 cut-off events. [2023-01-27 21:27:32,469 INFO L131 PetriNetUnfolder]: For 453939/453939 co-relation queries the response was YES. [2023-01-27 21:27:32,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157351 conditions, 13076 events. 7520/13076 cut-off events. For 453939/453939 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 100157 event pairs, 11 based on Foata normal form. 23/13099 useless extension candidates. Maximal degree in co-relation 156874. Up to 4879 conditions per place. [2023-01-27 21:27:32,647 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 1179 selfloop transitions, 2276 changer transitions 139/3594 dead transitions. [2023-01-27 21:27:32,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 3594 transitions, 115554 flow [2023-01-27 21:27:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-27 21:27:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-27 21:27:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3726 transitions. [2023-01-27 21:27:32,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996138996138996 [2023-01-27 21:27:32,650 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3726 transitions. [2023-01-27 21:27:32,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3726 transitions. [2023-01-27 21:27:32,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:27:32,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3726 transitions. [2023-01-27 21:27:32,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 59.142857142857146) internal successors, (3726), 63 states have internal predecessors, (3726), 0 states have call successors, (0), 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 21:27:32,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 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 21:27:32,734 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 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 21:27:32,734 INFO L175 Difference]: Start difference. First operand has 667 places, 3022 transitions, 95128 flow. Second operand 63 states and 3726 transitions. [2023-01-27 21:27:32,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 3594 transitions, 115554 flow [2023-01-27 21:27:44,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 3594 transitions, 114756 flow, removed 382 selfloop flow, removed 26 redundant places. [2023-01-27 21:27:44,457 INFO L231 Difference]: Finished difference. Result has 700 places, 3242 transitions, 111497 flow [2023-01-27 21:27:44,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94556, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2068, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=878, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=111497, PETRI_PLACES=700, PETRI_TRANSITIONS=3242} [2023-01-27 21:27:44,460 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 678 predicate places. [2023-01-27 21:27:44,461 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 3242 transitions, 111497 flow [2023-01-27 21:27:44,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 56.03225806451613) internal successors, (1737), 31 states have internal predecessors, (1737), 0 states have call successors, (0), 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 21:27:44,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:27:44,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:27:44,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 21:27:44,666 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,SelfDestructingSolverStorable15 [2023-01-27 21:27:44,667 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 21:27:44,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:27:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1527671576, now seen corresponding path program 10 times [2023-01-27 21:27:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:27:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301890909] [2023-01-27 21:27:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:27:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:27:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:27:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:27:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:27:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301890909] [2023-01-27 21:27:45,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301890909] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:27:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271554324] [2023-01-27 21:27:45,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:27:45,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:27:45,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:27:45,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:27:45,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 21:27:45,876 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:27:45,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:27:45,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 21:27:45,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:27:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:27:46,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:27:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:27:48,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271554324] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:27:48,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:27:48,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-27 21:27:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486184150] [2023-01-27 21:27:48,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:27:48,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:27:48,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:27:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:27:48,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2023-01-27 21:27:48,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:27:48,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 3242 transitions, 111497 flow. Second operand has 30 states, 30 states have (on average 53.96666666666667) internal successors, (1619), 30 states have internal predecessors, (1619), 0 states have call successors, (0), 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 21:27:48,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:27:48,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:27:48,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:28:44,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:28:57,307 INFO L130 PetriNetUnfolder]: 9166/15920 cut-off events. [2023-01-27 21:28:57,308 INFO L131 PetriNetUnfolder]: For 693042/693042 co-relation queries the response was YES. [2023-01-27 21:28:57,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203258 conditions, 15920 events. 9166/15920 cut-off events. For 693042/693042 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 125359 event pairs, 13 based on Foata normal form. 23/15943 useless extension candidates. Maximal degree in co-relation 202799. Up to 4028 conditions per place. [2023-01-27 21:28:57,559 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 817 selfloop transitions, 3468 changer transitions 145/4430 dead transitions. [2023-01-27 21:28:57,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 4430 transitions, 153499 flow [2023-01-27 21:28:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-01-27 21:28:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-01-27 21:28:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 6119 transitions. [2023-01-27 21:28:57,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828203203203203 [2023-01-27 21:28:57,565 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 6119 transitions. [2023-01-27 21:28:57,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 6119 transitions. [2023-01-27 21:28:57,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:28:57,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 6119 transitions. [2023-01-27 21:28:57,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 56.657407407407405) internal successors, (6119), 108 states have internal predecessors, (6119), 0 states have call successors, (0), 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 21:28:57,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 148.0) internal successors, (16132), 109 states have internal predecessors, (16132), 0 states have call successors, (0), 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 21:28:57,586 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 148.0) internal successors, (16132), 109 states have internal predecessors, (16132), 0 states have call successors, (0), 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 21:28:57,586 INFO L175 Difference]: Start difference. First operand has 700 places, 3242 transitions, 111497 flow. Second operand 108 states and 6119 transitions. [2023-01-27 21:28:57,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 4430 transitions, 153499 flow [2023-01-27 21:29:12,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 4430 transitions, 152676 flow, removed 211 selfloop flow, removed 30 redundant places. [2023-01-27 21:29:12,608 INFO L231 Difference]: Finished difference. Result has 789 places, 3977 transitions, 147983 flow [2023-01-27 21:29:12,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=110914, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2760, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=147983, PETRI_PLACES=789, PETRI_TRANSITIONS=3977} [2023-01-27 21:29:12,611 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 767 predicate places. [2023-01-27 21:29:12,611 INFO L495 AbstractCegarLoop]: Abstraction has has 789 places, 3977 transitions, 147983 flow [2023-01-27 21:29:12,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.96666666666667) internal successors, (1619), 30 states have internal predecessors, (1619), 0 states have call successors, (0), 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 21:29:12,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:29:12,612 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:29:12,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 21:29:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-27 21:29:12,813 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 21:29:12,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:29:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1153779590, now seen corresponding path program 11 times [2023-01-27 21:29:12,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:29:12,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316820800] [2023-01-27 21:29:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:29:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:29:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:29:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:29:13,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:29:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316820800] [2023-01-27 21:29:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316820800] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:29:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120047684] [2023-01-27 21:29:13,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:29:13,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:29:13,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:29:13,751 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:29:13,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 21:29:13,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-27 21:29:13,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:29:13,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 21:29:13,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:29:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:29:15,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:29:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:29:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120047684] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:29:16,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:29:16,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-01-27 21:29:16,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976869528] [2023-01-27 21:29:16,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:29:16,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:29:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:29:16,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:29:16,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2023-01-27 21:29:16,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:29:16,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 3977 transitions, 147983 flow. Second operand has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 21:29:16,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:29:16,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:29:16,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:01,039 INFO L130 PetriNetUnfolder]: 9716/16905 cut-off events. [2023-01-27 21:30:01,040 INFO L131 PetriNetUnfolder]: For 831286/831286 co-relation queries the response was YES. [2023-01-27 21:30:01,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228406 conditions, 16905 events. 9716/16905 cut-off events. For 831286/831286 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 134391 event pairs, 36 based on Foata normal form. 28/16933 useless extension candidates. Maximal degree in co-relation 227863. Up to 6590 conditions per place. [2023-01-27 21:30:01,326 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 1350 selfloop transitions, 3090 changer transitions 141/4581 dead transitions. [2023-01-27 21:30:01,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 845 places, 4581 transitions, 172073 flow [2023-01-27 21:30:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-01-27 21:30:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-01-27 21:30:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 4129 transitions. [2023-01-27 21:30:01,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38748123123123124 [2023-01-27 21:30:01,331 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 4129 transitions. [2023-01-27 21:30:01,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 4129 transitions. [2023-01-27 21:30:01,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:30:01,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 4129 transitions. [2023-01-27 21:30:01,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 57.34722222222222) internal successors, (4129), 72 states have internal predecessors, (4129), 0 states have call successors, (0), 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 21:30:01,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 148.0) internal successors, (10804), 73 states have internal predecessors, (10804), 0 states have call successors, (0), 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 21:30:01,344 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 148.0) internal successors, (10804), 73 states have internal predecessors, (10804), 0 states have call successors, (0), 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 21:30:01,344 INFO L175 Difference]: Start difference. First operand has 789 places, 3977 transitions, 147983 flow. Second operand 72 states and 4129 transitions. [2023-01-27 21:30:01,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 845 places, 4581 transitions, 172073 flow [2023-01-27 21:30:23,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 4581 transitions, 169285 flow, removed 730 selfloop flow, removed 33 redundant places. [2023-01-27 21:30:23,240 INFO L231 Difference]: Finished difference. Result has 833 places, 4205 transitions, 161485 flow [2023-01-27 21:30:23,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=145640, PETRI_DIFFERENCE_MINUEND_PLACES=741, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2872, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=161485, PETRI_PLACES=833, PETRI_TRANSITIONS=4205} [2023-01-27 21:30:23,244 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 811 predicate places. [2023-01-27 21:30:23,244 INFO L495 AbstractCegarLoop]: Abstraction has has 833 places, 4205 transitions, 161485 flow [2023-01-27 21:30:23,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 21:30:23,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:30:23,244 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:30:23,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 21:30:23,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:23,451 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 21:30:23,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:30:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1004786846, now seen corresponding path program 12 times [2023-01-27 21:30:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:30:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835596236] [2023-01-27 21:30:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:30:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:30:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:30:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:30:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:30:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835596236] [2023-01-27 21:30:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835596236] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:30:25,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378221219] [2023-01-27 21:30:25,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 21:30:25,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:30:25,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:30:25,161 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:30:25,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 21:30:25,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 21:30:25,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:30:25,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 21:30:25,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:30:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:30:26,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:30:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:30:33,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378221219] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:30:33,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:30:33,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 29 [2023-01-27 21:30:33,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310486368] [2023-01-27 21:30:33,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:30:33,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 21:30:33,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:30:33,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 21:30:33,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=788, Unknown=1, NotChecked=0, Total=930 [2023-01-27 21:30:33,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-27 21:30:33,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 4205 transitions, 161485 flow. Second operand has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 21:30:33,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:30:33,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-27 21:30:33,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:30:47,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:31:20,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 21:32:22,071 WARN L222 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 176 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:33:16,023 INFO L130 PetriNetUnfolder]: 12177/21255 cut-off events. [2023-01-27 21:33:16,024 INFO L131 PetriNetUnfolder]: For 1116900/1116900 co-relation queries the response was YES. [2023-01-27 21:33:16,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292489 conditions, 21255 events. 12177/21255 cut-off events. For 1116900/1116900 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 175716 event pairs, 88 based on Foata normal form. 57/21312 useless extension candidates. Maximal degree in co-relation 291957. Up to 5513 conditions per place. [2023-01-27 21:33:16,343 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 1067 selfloop transitions, 4366 changer transitions 320/5753 dead transitions. [2023-01-27 21:33:16,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 5753 transitions, 223100 flow [2023-01-27 21:33:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-01-27 21:33:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-01-27 21:33:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 7133 transitions. [2023-01-27 21:33:16,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37949563736965314 [2023-01-27 21:33:16,350 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 7133 transitions. [2023-01-27 21:33:16,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 7133 transitions. [2023-01-27 21:33:16,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:33:16,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 7133 transitions. [2023-01-27 21:33:16,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 56.16535433070866) internal successors, (7133), 127 states have internal predecessors, (7133), 0 states have call successors, (0), 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 21:33:16,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 148.0) internal successors, (18944), 128 states have internal predecessors, (18944), 0 states have call successors, (0), 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 21:33:16,370 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 148.0) internal successors, (18944), 128 states have internal predecessors, (18944), 0 states have call successors, (0), 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 21:33:16,370 INFO L175 Difference]: Start difference. First operand has 833 places, 4205 transitions, 161485 flow. Second operand 127 states and 7133 transitions. [2023-01-27 21:33:16,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 5753 transitions, 223100 flow [2023-01-27 21:33:44,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 5753 transitions, 222501 flow, removed 153 selfloop flow, removed 28 redundant places. [2023-01-27 21:33:44,539 INFO L231 Difference]: Finished difference. Result has 984 places, 5238 transitions, 216976 flow [2023-01-27 21:33:44,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=161080, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=216976, PETRI_PLACES=984, PETRI_TRANSITIONS=5238} [2023-01-27 21:33:44,542 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 962 predicate places. [2023-01-27 21:33:44,542 INFO L495 AbstractCegarLoop]: Abstraction has has 984 places, 5238 transitions, 216976 flow [2023-01-27 21:33:44,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 21:33:44,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:33:44,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:33:44,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 21:33:44,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:33:44,748 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 21:33:44,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:33:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash 897443102, now seen corresponding path program 13 times [2023-01-27 21:33:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:33:44,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132720400] [2023-01-27 21:33:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:33:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:33:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:33:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:33:45,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:33:45,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132720400] [2023-01-27 21:33:45,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132720400] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:33:45,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678680490] [2023-01-27 21:33:45,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:33:45,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:33:45,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:33:45,150 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:33:45,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 21:33:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:33:45,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-27 21:33:45,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:33:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:33:45,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:33:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:33:45,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678680490] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:33:45,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:33:45,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2023-01-27 21:33:45,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534182896] [2023-01-27 21:33:45,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:33:45,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 21:33:45,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:33:45,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 21:33:45,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-01-27 21:33:45,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-27 21:33:45,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 5238 transitions, 216976 flow. Second operand has 14 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 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 21:33:45,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:33:45,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-27 21:33:45,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:34:26,750 INFO L130 PetriNetUnfolder]: 13975/24160 cut-off events. [2023-01-27 21:34:26,751 INFO L131 PetriNetUnfolder]: For 1527445/1527445 co-relation queries the response was YES. [2023-01-27 21:34:27,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369376 conditions, 24160 events. 13975/24160 cut-off events. For 1527445/1527445 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 197863 event pairs, 9 based on Foata normal form. 84/24244 useless extension candidates. Maximal degree in co-relation 368715. Up to 10187 conditions per place. [2023-01-27 21:34:27,378 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 2241 selfloop transitions, 4477 changer transitions 0/6718 dead transitions. [2023-01-27 21:34:27,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 987 places, 6718 transitions, 285768 flow [2023-01-27 21:34:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 21:34:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 21:34:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2136 transitions. [2023-01-27 21:34:27,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2023-01-27 21:34:27,383 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2136 transitions. [2023-01-27 21:34:27,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2136 transitions. [2023-01-27 21:34:27,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:34:27,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2136 transitions. [2023-01-27 21:34:27,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 64.72727272727273) internal successors, (2136), 33 states have internal predecessors, (2136), 0 states have call successors, (0), 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 21:34:27,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 148.0) internal successors, (5032), 34 states have internal predecessors, (5032), 0 states have call successors, (0), 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 21:34:27,389 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 148.0) internal successors, (5032), 34 states have internal predecessors, (5032), 0 states have call successors, (0), 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 21:34:27,389 INFO L175 Difference]: Start difference. First operand has 984 places, 5238 transitions, 216976 flow. Second operand 33 states and 2136 transitions. [2023-01-27 21:34:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 987 places, 6718 transitions, 285768 flow [2023-01-27 21:35:19,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 6718 transitions, 279042 flow, removed 1307 selfloop flow, removed 65 redundant places. [2023-01-27 21:35:19,899 INFO L231 Difference]: Finished difference. Result has 945 places, 6202 transitions, 274211 flow [2023-01-27 21:35:19,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=212052, PETRI_DIFFERENCE_MINUEND_PLACES=890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=274211, PETRI_PLACES=945, PETRI_TRANSITIONS=6202} [2023-01-27 21:35:19,903 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 923 predicate places. [2023-01-27 21:35:19,903 INFO L495 AbstractCegarLoop]: Abstraction has has 945 places, 6202 transitions, 274211 flow [2023-01-27 21:35:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 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 21:35:19,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:35:19,904 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:35:19,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 21:35:20,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:35:20,104 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 21:35:20,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:35:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash 131298591, now seen corresponding path program 14 times [2023-01-27 21:35:20,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:35:20,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694403264] [2023-01-27 21:35:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:35:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:35:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:35:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:35:28,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:35:28,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694403264] [2023-01-27 21:35:28,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694403264] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:35:28,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320654242] [2023-01-27 21:35:28,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:35:28,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:35:28,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:35:28,336 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:35:28,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 21:35:28,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:35:28,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:35:28,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 21:35:28,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:35:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:35:30,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-01-27 21:35:35,143 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 21:35:35,148 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:35:35,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-01-27 21:35:35,173 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:35:35,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:35:35,348 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-5-1 context. [2023-01-27 21:35:35,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 21:35:35,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 21:35:35,351 INFO L445 BasicCegarLoop]: Path program histogram: [14, 5, 1, 1] [2023-01-27 21:35:35,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:35:35,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:35:35,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:35:35 BasicIcfg [2023-01-27 21:35:35,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:35:35,356 INFO L158 Benchmark]: Toolchain (without parser) took 825041.78ms. Allocated memory was 373.3MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 333.5MB in the beginning and 1.3GB in the end (delta: -989.1MB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-01-27 21:35:35,356 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:35:35,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.46ms. Allocated memory is still 373.3MB. Free memory was 333.1MB in the beginning and 322.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 21:35:35,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.15ms. Allocated memory is still 373.3MB. Free memory was 322.3MB in the beginning and 320.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:35:35,357 INFO L158 Benchmark]: Boogie Preprocessor took 33.06ms. Allocated memory is still 373.3MB. Free memory was 320.8MB in the beginning and 319.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:35:35,357 INFO L158 Benchmark]: RCFGBuilder took 383.73ms. Allocated memory is still 373.3MB. Free memory was 319.4MB in the beginning and 304.0MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 21:35:35,358 INFO L158 Benchmark]: TraceAbstraction took 824294.04ms. Allocated memory was 373.3MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 303.6MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-01-27 21:35:35,359 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 255.9MB. Free memory is still 213.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 282.46ms. Allocated memory is still 373.3MB. Free memory was 333.1MB in the beginning and 322.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.15ms. Allocated memory is still 373.3MB. Free memory was 322.3MB in the beginning and 320.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.06ms. Allocated memory is still 373.3MB. Free memory was 320.8MB in the beginning and 319.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 383.73ms. Allocated memory is still 373.3MB. Free memory was 319.4MB in the beginning and 304.0MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 824294.04ms. Allocated memory was 373.3MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 303.6MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 74 PlacesBefore, 22 PlacesAfterwards, 73 TransitionsBefore, 17 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 65 TotalNumberOfCompositions, 617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 529, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 218, independent: 213, independent conditional: 0, independent unconditional: 213, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 529, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 218, unknown conditional: 0, unknown unconditional: 218] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-5-1 context. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-5-1 context. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-5-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 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: 824.1s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 742.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 4734 SdHoareTripleChecker+Valid, 79.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4734 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 76.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 1145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20247 IncrementalHoareTripleChecker+Invalid, 21394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1145 mSolverCounterUnsat, 14 mSDtfsCounter, 20247 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1602 GetRequests, 350 SyntacticMatches, 23 SemanticMatches, 1229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37014 ImplicationChecksByTransitivity, 399.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274211occurred in iteration=20, InterpolantAutomatonStates: 1068, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 57.9s InterpolantComputationTime, 680 NumberOfCodeBlocks, 680 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 936 ConstructedInterpolants, 0 QuantifiedInterpolants, 33571 SizeOfPredicates, 150 NumberOfNonLiveVariables, 2106 ConjunctsInSsa, 442 ConjunctsInUnsatCore, 52 InterpolantComputations, 4 PerfectInterpolantSequences, 18/312 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown