/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:48:20,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:48:20,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:48:20,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:48:20,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:48:20,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:48:20,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:48:20,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:48:20,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:48:20,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:48:20,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:48:20,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:48:20,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:48:20,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:48:20,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:48:20,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:48:20,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:48:20,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:48:20,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:48:20,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:48:20,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:48:20,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:48:20,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:48:20,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:48:20,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:48:20,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:48:20,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:48:20,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:48:20,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:48:20,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:48:20,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:48:20,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:48:20,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:48:20,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:48:20,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:48:20,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:48:20,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:48:20,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:48:20,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:48:20,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:48:20,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:48:20,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:48:20,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:48:20,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:48:20,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:48:20,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:48:20,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:48:20,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:48:20,588 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:48:20,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:48:20,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:48:20,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:48:20,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:48:20,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:48:20,590 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:48:20,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:48:20,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:48:20,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:48:20,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:48:20,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:48:20,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:48:20,761 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:48:20,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2022-09-20 20:48:20,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6509195/2387466b277d4027879e1a7956ffd6f3/FLAG184a2c4ca [2022-09-20 20:48:21,169 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:48:21,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2022-09-20 20:48:21,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6509195/2387466b277d4027879e1a7956ffd6f3/FLAG184a2c4ca [2022-09-20 20:48:21,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa6509195/2387466b277d4027879e1a7956ffd6f3 [2022-09-20 20:48:21,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:48:21,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:48:21,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:48:21,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:48:21,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:48:21,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462afdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21, skipping insertion in model container [2022-09-20 20:48:21,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:48:21,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:48:21,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-09-20 20:48:21,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:48:21,352 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:48:21,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2728,2741] [2022-09-20 20:48:21,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:48:21,381 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:48:21,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21 WrapperNode [2022-09-20 20:48:21,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:48:21,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:48:21,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:48:21,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:48:21,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,416 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 277 [2022-09-20 20:48:21,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:48:21,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:48:21,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:48:21,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:48:21,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:48:21,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:48:21,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:48:21,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:48:21,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (1/1) ... [2022-09-20 20:48:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:48:21,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:21,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 20:48:21,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 20:48:21,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:48:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:48:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:48:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:48:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:48:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:48:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:48:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:48:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 20:48:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 20:48:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:48:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 20:48:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:48:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:48:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:48:21,529 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:48:21,616 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:48:21,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:48:21,924 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:48:21,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:48:21,938 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 20:48:21,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:48:21 BoogieIcfgContainer [2022-09-20 20:48:21,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:48:21,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:48:21,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:48:21,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:48:21,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:48:21" (1/3) ... [2022-09-20 20:48:21,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338989e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:48:21, skipping insertion in model container [2022-09-20 20:48:21,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:48:21" (2/3) ... [2022-09-20 20:48:21,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338989e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:48:21, skipping insertion in model container [2022-09-20 20:48:21,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:48:21" (3/3) ... [2022-09-20 20:48:21,949 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2022-09-20 20:48:21,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:48:21,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:48:21,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:48:22,024 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 20:48:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 350 transitions, 724 flow [2022-09-20 20:48:22,158 INFO L130 PetriNetUnfolder]: 28/347 cut-off events. [2022-09-20 20:48:22,158 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:48:22,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 28/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-09-20 20:48:22,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 350 transitions, 724 flow [2022-09-20 20:48:22,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 336 transitions, 690 flow [2022-09-20 20:48:22,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:48:22,191 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;@77e9c027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:48:22,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 20:48:22,258 INFO L130 PetriNetUnfolder]: 27/331 cut-off events. [2022-09-20 20:48:22,258 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:48:22,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:22,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:22,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1394465591, now seen corresponding path program 1 times [2022-09-20 20:48:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:22,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843718957] [2022-09-20 20:48:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843718957] [2022-09-20 20:48:22,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843718957] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:48:22,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:48:22,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:48:22,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970426468] [2022-09-20 20:48:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:22,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 20:48:22,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 20:48:22,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 20:48:22,533 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 350 [2022-09-20 20:48:22,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 336 transitions, 690 flow. Second operand has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:22,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:22,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 350 [2022-09-20 20:48:22,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:22,593 INFO L130 PetriNetUnfolder]: 9/317 cut-off events. [2022-09-20 20:48:22,593 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-20 20:48:22,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 317 events. 9/317 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 567 event pairs, 0 based on Foata normal form. 25/320 useless extension candidates. Maximal degree in co-relation 256. Up to 7 conditions per place. [2022-09-20 20:48:22,597 INFO L137 encePairwiseOnDemand]: 331/350 looper letters, 6 selfloop transitions, 0 changer transitions 7/317 dead transitions. [2022-09-20 20:48:22,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 317 transitions, 664 flow [2022-09-20 20:48:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 20:48:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 20:48:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 673 transitions. [2022-09-20 20:48:22,612 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9614285714285714 [2022-09-20 20:48:22,612 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 673 transitions. [2022-09-20 20:48:22,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 673 transitions. [2022-09-20 20:48:22,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:22,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 673 transitions. [2022-09-20 20:48:22,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 336.5) internal successors, (673), 2 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:22,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:22,628 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 350.0) internal successors, (1050), 3 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:22,629 INFO L175 Difference]: Start difference. First operand has 318 places, 336 transitions, 690 flow. Second operand 2 states and 673 transitions. [2022-09-20 20:48:22,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 317 transitions, 664 flow [2022-09-20 20:48:22,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 317 transitions, 652 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 20:48:22,639 INFO L231 Difference]: Finished difference. Result has 313 places, 310 transitions, 626 flow [2022-09-20 20:48:22,641 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=626, PETRI_PLACES=313, PETRI_TRANSITIONS=310} [2022-09-20 20:48:22,645 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, -5 predicate places. [2022-09-20 20:48:22,645 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 310 transitions, 626 flow [2022-09-20 20:48:22,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 328.0) internal successors, (656), 2 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:22,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:22,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:22,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:48:22,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:22,647 INFO L85 PathProgramCache]: Analyzing trace with hash 833383285, now seen corresponding path program 1 times [2022-09-20 20:48:22,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364954239] [2022-09-20 20:48:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:22,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:22,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364954239] [2022-09-20 20:48:22,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364954239] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:48:22,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:48:22,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:48:22,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768563435] [2022-09-20 20:48:22,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:22,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:48:22,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:48:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:48:22,924 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-09-20 20:48:22,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 310 transitions, 626 flow. Second operand has 7 states, 7 states have (on average 272.42857142857144) internal successors, (1907), 7 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:22,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:22,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-09-20 20:48:22,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:23,666 INFO L130 PetriNetUnfolder]: 635/4764 cut-off events. [2022-09-20 20:48:23,669 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-09-20 20:48:23,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 4764 events. 635/4764 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 45633 event pairs, 123 based on Foata normal form. 1/4185 useless extension candidates. Maximal degree in co-relation 5700. Up to 334 conditions per place. [2022-09-20 20:48:23,706 INFO L137 encePairwiseOnDemand]: 341/350 looper letters, 95 selfloop transitions, 9 changer transitions 4/360 dead transitions. [2022-09-20 20:48:23,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 360 transitions, 954 flow [2022-09-20 20:48:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:48:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:48:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-09-20 20:48:23,710 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8016326530612244 [2022-09-20 20:48:23,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-09-20 20:48:23,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-09-20 20:48:23,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:23,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-09-20 20:48:23,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:23,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:23,719 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:23,720 INFO L175 Difference]: Start difference. First operand has 313 places, 310 transitions, 626 flow. Second operand 7 states and 1964 transitions. [2022-09-20 20:48:23,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 360 transitions, 954 flow [2022-09-20 20:48:23,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 360 transitions, 954 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:48:23,727 INFO L231 Difference]: Finished difference. Result has 317 places, 317 transitions, 688 flow [2022-09-20 20:48:23,727 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=317, PETRI_TRANSITIONS=317} [2022-09-20 20:48:23,728 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, -1 predicate places. [2022-09-20 20:48:23,728 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 317 transitions, 688 flow [2022-09-20 20:48:23,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.42857142857144) internal successors, (1907), 7 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:23,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:23,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:23,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:48:23,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:23,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:23,730 INFO L85 PathProgramCache]: Analyzing trace with hash -739899855, now seen corresponding path program 2 times [2022-09-20 20:48:23,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:23,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061296783] [2022-09-20 20:48:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:24,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061296783] [2022-09-20 20:48:24,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061296783] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:48:24,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:48:24,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-20 20:48:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449490245] [2022-09-20 20:48:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-20 20:48:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:24,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-20 20:48:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-09-20 20:48:24,056 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-09-20 20:48:24,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 317 transitions, 688 flow. Second operand has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:24,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:24,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-09-20 20:48:24,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:25,409 INFO L130 PetriNetUnfolder]: 992/8107 cut-off events. [2022-09-20 20:48:25,409 INFO L131 PetriNetUnfolder]: For 726/870 co-relation queries the response was YES. [2022-09-20 20:48:25,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 8107 events. 992/8107 cut-off events. For 726/870 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 92966 event pairs, 389 based on Foata normal form. 10/7206 useless extension candidates. Maximal degree in co-relation 10253. Up to 613 conditions per place. [2022-09-20 20:48:25,467 INFO L137 encePairwiseOnDemand]: 328/350 looper letters, 141 selfloop transitions, 23 changer transitions 6/404 dead transitions. [2022-09-20 20:48:25,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 404 transitions, 1257 flow [2022-09-20 20:48:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:48:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:48:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5043 transitions. [2022-09-20 20:48:25,476 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7204285714285714 [2022-09-20 20:48:25,476 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5043 transitions. [2022-09-20 20:48:25,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5043 transitions. [2022-09-20 20:48:25,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:25,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5043 transitions. [2022-09-20 20:48:25,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 252.15) internal successors, (5043), 20 states have internal predecessors, (5043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:25,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:25,500 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 350.0) internal successors, (7350), 21 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:25,500 INFO L175 Difference]: Start difference. First operand has 317 places, 317 transitions, 688 flow. Second operand 20 states and 5043 transitions. [2022-09-20 20:48:25,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 404 transitions, 1257 flow [2022-09-20 20:48:25,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 404 transitions, 1239 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-09-20 20:48:25,509 INFO L231 Difference]: Finished difference. Result has 342 places, 331 transitions, 819 flow [2022-09-20 20:48:25,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=819, PETRI_PLACES=342, PETRI_TRANSITIONS=331} [2022-09-20 20:48:25,511 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 24 predicate places. [2022-09-20 20:48:25,511 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 331 transitions, 819 flow [2022-09-20 20:48:25,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 248.5) internal successors, (3479), 14 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:25,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:25,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:48:25,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash 148770181, now seen corresponding path program 1 times [2022-09-20 20:48:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:25,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53830986] [2022-09-20 20:48:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:25,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:25,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53830986] [2022-09-20 20:48:25,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53830986] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830322692] [2022-09-20 20:48:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:25,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:25,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:48:25,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 20:48:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:25,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjunts are in the unsatisfiable core [2022-09-20 20:48:25,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:48:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:26,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:48:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:26,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830322692] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:26,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 20:48:26,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 13] total 26 [2022-09-20 20:48:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965381076] [2022-09-20 20:48:26,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:26,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 20:48:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 20:48:26,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-09-20 20:48:26,501 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-09-20 20:48:26,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 331 transitions, 819 flow. Second operand has 13 states, 13 states have (on average 249.15384615384616) internal successors, (3239), 13 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:26,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:26,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-09-20 20:48:26,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:28,473 INFO L130 PetriNetUnfolder]: 1651/14023 cut-off events. [2022-09-20 20:48:28,473 INFO L131 PetriNetUnfolder]: For 1414/1426 co-relation queries the response was YES. [2022-09-20 20:48:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17509 conditions, 14023 events. 1651/14023 cut-off events. For 1414/1426 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 176111 event pairs, 872 based on Foata normal form. 15/12466 useless extension candidates. Maximal degree in co-relation 17491. Up to 678 conditions per place. [2022-09-20 20:48:28,557 INFO L137 encePairwiseOnDemand]: 328/350 looper letters, 150 selfloop transitions, 28 changer transitions 4/420 dead transitions. [2022-09-20 20:48:28,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 420 transitions, 1450 flow [2022-09-20 20:48:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:48:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:48:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4320 transitions. [2022-09-20 20:48:28,564 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7260504201680672 [2022-09-20 20:48:28,564 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4320 transitions. [2022-09-20 20:48:28,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4320 transitions. [2022-09-20 20:48:28,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:28,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4320 transitions. [2022-09-20 20:48:28,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.11764705882354) internal successors, (4320), 17 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:28,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:28,579 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 350.0) internal successors, (6300), 18 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:28,579 INFO L175 Difference]: Start difference. First operand has 342 places, 331 transitions, 819 flow. Second operand 17 states and 4320 transitions. [2022-09-20 20:48:28,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 420 transitions, 1450 flow [2022-09-20 20:48:28,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 420 transitions, 1428 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-09-20 20:48:28,587 INFO L231 Difference]: Finished difference. Result has 358 places, 346 transitions, 955 flow [2022-09-20 20:48:28,588 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=955, PETRI_PLACES=358, PETRI_TRANSITIONS=346} [2022-09-20 20:48:28,588 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 40 predicate places. [2022-09-20 20:48:28,588 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 346 transitions, 955 flow [2022-09-20 20:48:28,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.15384615384616) internal successors, (3239), 13 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:28,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:28,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:28,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 20:48:28,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:28,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash -822710308, now seen corresponding path program 1 times [2022-09-20 20:48:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:28,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347274010] [2022-09-20 20:48:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347274010] [2022-09-20 20:48:29,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347274010] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423892443] [2022-09-20 20:48:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:29,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:29,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:48:29,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 20:48:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:29,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 20:48:29,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:48:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:29,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:48:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:29,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423892443] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:29,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 20:48:29,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-09-20 20:48:29,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778705526] [2022-09-20 20:48:29,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:29,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:48:29,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:48:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-09-20 20:48:29,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-09-20 20:48:29,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 346 transitions, 955 flow. Second operand has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:29,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:29,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-09-20 20:48:29,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:31,980 INFO L130 PetriNetUnfolder]: 3077/16161 cut-off events. [2022-09-20 20:48:31,980 INFO L131 PetriNetUnfolder]: For 2757/2788 co-relation queries the response was YES. [2022-09-20 20:48:32,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23109 conditions, 16161 events. 3077/16161 cut-off events. For 2757/2788 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 194608 event pairs, 1155 based on Foata normal form. 16/14112 useless extension candidates. Maximal degree in co-relation 23087. Up to 1177 conditions per place. [2022-09-20 20:48:32,075 INFO L137 encePairwiseOnDemand]: 332/350 looper letters, 146 selfloop transitions, 25 changer transitions 1/432 dead transitions. [2022-09-20 20:48:32,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 432 transitions, 1548 flow [2022-09-20 20:48:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:48:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:48:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4987 transitions. [2022-09-20 20:48:32,082 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7915873015873016 [2022-09-20 20:48:32,082 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4987 transitions. [2022-09-20 20:48:32,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4987 transitions. [2022-09-20 20:48:32,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:32,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4987 transitions. [2022-09-20 20:48:32,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.05555555555554) internal successors, (4987), 18 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:32,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:32,098 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 350.0) internal successors, (6650), 19 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:32,098 INFO L175 Difference]: Start difference. First operand has 358 places, 346 transitions, 955 flow. Second operand 18 states and 4987 transitions. [2022-09-20 20:48:32,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 432 transitions, 1548 flow [2022-09-20 20:48:32,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 432 transitions, 1531 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-20 20:48:32,116 INFO L231 Difference]: Finished difference. Result has 368 places, 352 transitions, 1013 flow [2022-09-20 20:48:32,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1013, PETRI_PLACES=368, PETRI_TRANSITIONS=352} [2022-09-20 20:48:32,117 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 50 predicate places. [2022-09-20 20:48:32,117 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 352 transitions, 1013 flow [2022-09-20 20:48:32,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.45454545454544) internal successors, (2997), 11 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:32,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:32,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:32,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-20 20:48:32,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:32,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1765842763, now seen corresponding path program 1 times [2022-09-20 20:48:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:32,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686731921] [2022-09-20 20:48:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 20:48:32,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:32,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686731921] [2022-09-20 20:48:32,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686731921] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:32,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934310089] [2022-09-20 20:48:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:32,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:32,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:32,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:48:32,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 20:48:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:32,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 14 conjunts are in the unsatisfiable core [2022-09-20 20:48:32,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:48:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 20:48:32,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:48:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 20:48:33,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934310089] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:33,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 20:48:33,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 13] total 29 [2022-09-20 20:48:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570714880] [2022-09-20 20:48:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:33,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 20:48:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:33,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 20:48:33,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-09-20 20:48:33,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 350 [2022-09-20 20:48:33,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 352 transitions, 1013 flow. Second operand has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:33,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:33,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 350 [2022-09-20 20:48:33,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:36,996 INFO L130 PetriNetUnfolder]: 3602/29087 cut-off events. [2022-09-20 20:48:36,996 INFO L131 PetriNetUnfolder]: For 6919/7295 co-relation queries the response was YES. [2022-09-20 20:48:37,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39819 conditions, 29087 events. 3602/29087 cut-off events. For 6919/7295 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 422806 event pairs, 1058 based on Foata normal form. 77/26214 useless extension candidates. Maximal degree in co-relation 39797. Up to 1954 conditions per place. [2022-09-20 20:48:37,297 INFO L137 encePairwiseOnDemand]: 325/350 looper letters, 180 selfloop transitions, 53 changer transitions 5/480 dead transitions. [2022-09-20 20:48:37,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 480 transitions, 2042 flow [2022-09-20 20:48:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-20 20:48:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-20 20:48:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5783 transitions. [2022-09-20 20:48:37,305 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7183850931677018 [2022-09-20 20:48:37,305 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5783 transitions. [2022-09-20 20:48:37,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5783 transitions. [2022-09-20 20:48:37,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:37,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5783 transitions. [2022-09-20 20:48:37,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 251.43478260869566) internal successors, (5783), 23 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:37,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 350.0) internal successors, (8400), 24 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:37,322 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 350.0) internal successors, (8400), 24 states have internal predecessors, (8400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:37,322 INFO L175 Difference]: Start difference. First operand has 368 places, 352 transitions, 1013 flow. Second operand 23 states and 5783 transitions. [2022-09-20 20:48:37,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 480 transitions, 2042 flow [2022-09-20 20:48:37,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 480 transitions, 1989 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-09-20 20:48:37,335 INFO L231 Difference]: Finished difference. Result has 389 places, 380 transitions, 1317 flow [2022-09-20 20:48:37,335 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1317, PETRI_PLACES=389, PETRI_TRANSITIONS=380} [2022-09-20 20:48:37,336 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 71 predicate places. [2022-09-20 20:48:37,336 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 380 transitions, 1317 flow [2022-09-20 20:48:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.53846153846155) internal successors, (3244), 13 states have internal predecessors, (3244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:37,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:37,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:37,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 20:48:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:37,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash -167152059, now seen corresponding path program 1 times [2022-09-20 20:48:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:37,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058549775] [2022-09-20 20:48:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 20:48:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058549775] [2022-09-20 20:48:37,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058549775] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192075390] [2022-09-20 20:48:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:37,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:37,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 20:48:37,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 20:48:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:37,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 20:48:37,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:48:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 20:48:38,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:48:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 20:48:38,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192075390] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:38,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 20:48:38,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-09-20 20:48:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088354638] [2022-09-20 20:48:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:38,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:48:38,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:48:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-09-20 20:48:38,458 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-09-20 20:48:38,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 380 transitions, 1317 flow. Second operand has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:38,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:38,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-09-20 20:48:38,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:45,270 INFO L130 PetriNetUnfolder]: 6858/54299 cut-off events. [2022-09-20 20:48:45,270 INFO L131 PetriNetUnfolder]: For 12375/12667 co-relation queries the response was YES. [2022-09-20 20:48:45,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74862 conditions, 54299 events. 6858/54299 cut-off events. For 12375/12667 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 878567 event pairs, 2882 based on Foata normal form. 90/49386 useless extension candidates. Maximal degree in co-relation 74833. Up to 2309 conditions per place. [2022-09-20 20:48:45,830 INFO L137 encePairwiseOnDemand]: 332/350 looper letters, 204 selfloop transitions, 30 changer transitions 1/501 dead transitions. [2022-09-20 20:48:45,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 501 transitions, 2281 flow [2022-09-20 20:48:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:48:45,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:48:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5273 transitions. [2022-09-20 20:48:45,837 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7929323308270677 [2022-09-20 20:48:45,837 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5273 transitions. [2022-09-20 20:48:45,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5273 transitions. [2022-09-20 20:48:45,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:45,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5273 transitions. [2022-09-20 20:48:45,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 277.5263157894737) internal successors, (5273), 19 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:45,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:45,854 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:45,854 INFO L175 Difference]: Start difference. First operand has 389 places, 380 transitions, 1317 flow. Second operand 19 states and 5273 transitions. [2022-09-20 20:48:45,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 501 transitions, 2281 flow [2022-09-20 20:48:45,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 501 transitions, 2266 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-20 20:48:45,882 INFO L231 Difference]: Finished difference. Result has 402 places, 387 transitions, 1396 flow [2022-09-20 20:48:45,883 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1396, PETRI_PLACES=402, PETRI_TRANSITIONS=387} [2022-09-20 20:48:45,883 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 84 predicate places. [2022-09-20 20:48:45,883 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 387 transitions, 1396 flow [2022-09-20 20:48:45,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 272.90909090909093) internal successors, (3002), 11 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:45,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:45,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:45,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 20:48:46,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:46,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1760111040, now seen corresponding path program 1 times [2022-09-20 20:48:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:46,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842831321] [2022-09-20 20:48:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:46,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:46,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842831321] [2022-09-20 20:48:46,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842831321] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:48:46,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:48:46,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:48:46,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437746066] [2022-09-20 20:48:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:46,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:48:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:48:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:48:46,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 350 [2022-09-20 20:48:46,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 387 transitions, 1396 flow. Second operand has 7 states, 7 states have (on average 278.85714285714283) internal successors, (1952), 7 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:46,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:46,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 350 [2022-09-20 20:48:46,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:48,692 INFO L130 PetriNetUnfolder]: 1462/17618 cut-off events. [2022-09-20 20:48:48,692 INFO L131 PetriNetUnfolder]: For 4931/5125 co-relation queries the response was YES. [2022-09-20 20:48:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24308 conditions, 17618 events. 1462/17618 cut-off events. For 4931/5125 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 237878 event pairs, 920 based on Foata normal form. 94/16340 useless extension candidates. Maximal degree in co-relation 24278. Up to 1781 conditions per place. [2022-09-20 20:48:48,821 INFO L137 encePairwiseOnDemand]: 339/350 looper letters, 75 selfloop transitions, 8 changer transitions 56/409 dead transitions. [2022-09-20 20:48:48,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 409 transitions, 1725 flow [2022-09-20 20:48:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:48:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:48:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2834 transitions. [2022-09-20 20:48:48,823 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8097142857142857 [2022-09-20 20:48:48,823 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2834 transitions. [2022-09-20 20:48:48,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2834 transitions. [2022-09-20 20:48:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:48,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2834 transitions. [2022-09-20 20:48:48,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 283.4) internal successors, (2834), 10 states have internal predecessors, (2834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:48,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:48,830 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:48,831 INFO L175 Difference]: Start difference. First operand has 402 places, 387 transitions, 1396 flow. Second operand 10 states and 2834 transitions. [2022-09-20 20:48:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 409 transitions, 1725 flow [2022-09-20 20:48:48,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 409 transitions, 1678 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-09-20 20:48:48,844 INFO L231 Difference]: Finished difference. Result has 399 places, 351 transitions, 1140 flow [2022-09-20 20:48:48,844 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1140, PETRI_PLACES=399, PETRI_TRANSITIONS=351} [2022-09-20 20:48:48,845 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 81 predicate places. [2022-09-20 20:48:48,845 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 351 transitions, 1140 flow [2022-09-20 20:48:48,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.85714285714283) internal successors, (1952), 7 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:48,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:48,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:48:48,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1725265916, now seen corresponding path program 1 times [2022-09-20 20:48:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:48,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512984964] [2022-09-20 20:48:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:48:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512984964] [2022-09-20 20:48:48,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512984964] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499266069] [2022-09-20 20:48:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:48,967 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) [2022-09-20 20:48:48,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 20:48:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:49,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 20:48:49,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:48:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:48:49,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:48:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:48:49,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499266069] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:49,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 20:48:49,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-09-20 20:48:49,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644433837] [2022-09-20 20:48:49,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:48:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:49,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:48:49,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-09-20 20:48:49,638 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 350 [2022-09-20 20:48:49,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 351 transitions, 1140 flow. Second operand has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:49,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:49,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 350 [2022-09-20 20:48:49,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:53,319 INFO L130 PetriNetUnfolder]: 4774/29293 cut-off events. [2022-09-20 20:48:53,320 INFO L131 PetriNetUnfolder]: For 10326/10519 co-relation queries the response was YES. [2022-09-20 20:48:53,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44684 conditions, 29293 events. 4774/29293 cut-off events. For 10326/10519 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 411877 event pairs, 1410 based on Foata normal form. 157/26913 useless extension candidates. Maximal degree in co-relation 44654. Up to 2050 conditions per place. [2022-09-20 20:48:53,591 INFO L137 encePairwiseOnDemand]: 333/350 looper letters, 158 selfloop transitions, 24 changer transitions 0/444 dead transitions. [2022-09-20 20:48:53,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 444 transitions, 1880 flow [2022-09-20 20:48:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:48:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:48:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5246 transitions. [2022-09-20 20:48:53,595 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7888721804511278 [2022-09-20 20:48:53,595 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5246 transitions. [2022-09-20 20:48:53,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5246 transitions. [2022-09-20 20:48:53,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:53,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5246 transitions. [2022-09-20 20:48:53,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 276.10526315789474) internal successors, (5246), 19 states have internal predecessors, (5246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:53,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:53,730 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 350.0) internal successors, (7000), 20 states have internal predecessors, (7000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:53,730 INFO L175 Difference]: Start difference. First operand has 399 places, 351 transitions, 1140 flow. Second operand 19 states and 5246 transitions. [2022-09-20 20:48:53,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 444 transitions, 1880 flow [2022-09-20 20:48:53,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 444 transitions, 1773 flow, removed 5 selfloop flow, removed 27 redundant places. [2022-09-20 20:48:53,744 INFO L231 Difference]: Finished difference. Result has 378 places, 357 transitions, 1116 flow [2022-09-20 20:48:53,745 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1116, PETRI_PLACES=378, PETRI_TRANSITIONS=357} [2022-09-20 20:48:53,745 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 60 predicate places. [2022-09-20 20:48:53,746 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 357 transitions, 1116 flow [2022-09-20 20:48:53,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:53,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:53,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:53,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 20:48:53,959 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 [2022-09-20 20:48:53,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:53,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1346504926, now seen corresponding path program 1 times [2022-09-20 20:48:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:53,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24924197] [2022-09-20 20:48:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 20:48:54,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:54,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24924197] [2022-09-20 20:48:54,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24924197] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:48:54,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:48:54,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:48:54,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990307957] [2022-09-20 20:48:54,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:48:54,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:48:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:48:54,028 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 350 [2022-09-20 20:48:54,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 357 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:54,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:54,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 350 [2022-09-20 20:48:54,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:55,207 INFO L130 PetriNetUnfolder]: 1456/9292 cut-off events. [2022-09-20 20:48:55,207 INFO L131 PetriNetUnfolder]: For 3710/3828 co-relation queries the response was YES. [2022-09-20 20:48:55,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14659 conditions, 9292 events. 1456/9292 cut-off events. For 3710/3828 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 105149 event pairs, 871 based on Foata normal form. 120/8633 useless extension candidates. Maximal degree in co-relation 14638. Up to 1825 conditions per place. [2022-09-20 20:48:55,271 INFO L137 encePairwiseOnDemand]: 341/350 looper letters, 71 selfloop transitions, 10 changer transitions 29/377 dead transitions. [2022-09-20 20:48:55,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 377 transitions, 1416 flow [2022-09-20 20:48:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 20:48:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 20:48:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2264 transitions. [2022-09-20 20:48:55,275 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8085714285714286 [2022-09-20 20:48:55,275 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2264 transitions. [2022-09-20 20:48:55,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2264 transitions. [2022-09-20 20:48:55,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:55,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2264 transitions. [2022-09-20 20:48:55,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 283.0) internal successors, (2264), 8 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:55,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 350.0) internal successors, (3150), 9 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:55,281 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 350.0) internal successors, (3150), 9 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:55,281 INFO L175 Difference]: Start difference. First operand has 378 places, 357 transitions, 1116 flow. Second operand 8 states and 2264 transitions. [2022-09-20 20:48:55,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 377 transitions, 1416 flow [2022-09-20 20:48:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 377 transitions, 1371 flow, removed 4 selfloop flow, removed 14 redundant places. [2022-09-20 20:48:55,293 INFO L231 Difference]: Finished difference. Result has 371 places, 346 transitions, 1025 flow [2022-09-20 20:48:55,294 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1025, PETRI_PLACES=371, PETRI_TRANSITIONS=346} [2022-09-20 20:48:55,294 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 53 predicate places. [2022-09-20 20:48:55,294 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 346 transitions, 1025 flow [2022-09-20 20:48:55,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:55,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:55,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:55,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:48:55,295 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:48:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1362879371, now seen corresponding path program 1 times [2022-09-20 20:48:55,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:55,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986894454] [2022-09-20 20:48:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:55,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:48:55,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:55,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986894454] [2022-09-20 20:48:55,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986894454] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:48:55,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075783892] [2022-09-20 20:48:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:55,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:48:55,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:48:55,474 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) [2022-09-20 20:48:55,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 20:48:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:55,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-20 20:48:55,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:48:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 20:48:55,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:48:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 20:48:56,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075783892] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:48:56,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:48:56,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 32 [2022-09-20 20:48:56,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274013007] [2022-09-20 20:48:56,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:48:56,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-20 20:48:56,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-20 20:48:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2022-09-20 20:48:56,222 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 350 [2022-09-20 20:48:56,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 346 transitions, 1025 flow. Second operand has 32 states, 32 states have (on average 242.375) internal successors, (7756), 32 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:56,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:56,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 350 [2022-09-20 20:48:56,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:49:00,240 INFO L130 PetriNetUnfolder]: 3427/24324 cut-off events. [2022-09-20 20:49:00,240 INFO L131 PetriNetUnfolder]: For 10047/10800 co-relation queries the response was YES. [2022-09-20 20:49:00,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37659 conditions, 24324 events. 3427/24324 cut-off events. For 10047/10800 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 335700 event pairs, 1297 based on Foata normal form. 287/22672 useless extension candidates. Maximal degree in co-relation 37639. Up to 1941 conditions per place. [2022-09-20 20:49:00,500 INFO L137 encePairwiseOnDemand]: 317/350 looper letters, 277 selfloop transitions, 72 changer transitions 15/592 dead transitions. [2022-09-20 20:49:00,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 592 transitions, 2856 flow [2022-09-20 20:49:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-20 20:49:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-09-20 20:49:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11672 transitions. [2022-09-20 20:49:00,509 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6947619047619048 [2022-09-20 20:49:00,509 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11672 transitions. [2022-09-20 20:49:00,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11672 transitions. [2022-09-20 20:49:00,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:49:00,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11672 transitions. [2022-09-20 20:49:00,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 243.16666666666666) internal successors, (11672), 48 states have internal predecessors, (11672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:00,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 350.0) internal successors, (17150), 49 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:00,537 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 350.0) internal successors, (17150), 49 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:00,537 INFO L175 Difference]: Start difference. First operand has 371 places, 346 transitions, 1025 flow. Second operand 48 states and 11672 transitions. [2022-09-20 20:49:00,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 592 transitions, 2856 flow [2022-09-20 20:49:00,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 592 transitions, 2750 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-09-20 20:49:00,562 INFO L231 Difference]: Finished difference. Result has 424 places, 395 transitions, 1520 flow [2022-09-20 20:49:00,563 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1520, PETRI_PLACES=424, PETRI_TRANSITIONS=395} [2022-09-20 20:49:00,563 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 106 predicate places. [2022-09-20 20:49:00,563 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 395 transitions, 1520 flow [2022-09-20 20:49:00,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 242.375) internal successors, (7756), 32 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:00,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:49:00,564 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:49:00,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-20 20:49:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:49:00,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:49:00,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:49:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2067946875, now seen corresponding path program 2 times [2022-09-20 20:49:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:49:00,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852937275] [2022-09-20 20:49:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:49:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:49:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:49:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 20:49:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:49:00,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852937275] [2022-09-20 20:49:00,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852937275] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:49:00,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093954668] [2022-09-20 20:49:00,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 20:49:00,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:49:00,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:49:00,964 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) [2022-09-20 20:49:00,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 20:49:01,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 20:49:01,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 20:49:01,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 20:49:01,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:49:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-20 20:49:01,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 20:49:01,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093954668] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:49:01,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 20:49:01,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 21 [2022-09-20 20:49:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044724213] [2022-09-20 20:49:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:49:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:49:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:49:01,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:49:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-09-20 20:49:01,160 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-09-20 20:49:01,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 395 transitions, 1520 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:01,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:49:01,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-09-20 20:49:01,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:49:05,717 INFO L130 PetriNetUnfolder]: 4291/31228 cut-off events. [2022-09-20 20:49:05,717 INFO L131 PetriNetUnfolder]: For 13607/15025 co-relation queries the response was YES. [2022-09-20 20:49:05,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48009 conditions, 31228 events. 4291/31228 cut-off events. For 13607/15025 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 441129 event pairs, 810 based on Foata normal form. 304/28787 useless extension candidates. Maximal degree in co-relation 47972. Up to 2649 conditions per place. [2022-09-20 20:49:05,995 INFO L137 encePairwiseOnDemand]: 341/350 looper letters, 141 selfloop transitions, 22 changer transitions 4/474 dead transitions. [2022-09-20 20:49:05,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 474 transitions, 2295 flow [2022-09-20 20:49:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:49:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:49:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2022-09-20 20:49:05,998 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8004081632653062 [2022-09-20 20:49:05,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2022-09-20 20:49:05,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2022-09-20 20:49:05,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:49:05,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2022-09-20 20:49:06,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:06,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:06,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:06,001 INFO L175 Difference]: Start difference. First operand has 424 places, 395 transitions, 1520 flow. Second operand 7 states and 1961 transitions. [2022-09-20 20:49:06,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 474 transitions, 2295 flow [2022-09-20 20:49:06,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 474 transitions, 2242 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-09-20 20:49:06,021 INFO L231 Difference]: Finished difference. Result has 423 places, 413 transitions, 1738 flow [2022-09-20 20:49:06,022 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1738, PETRI_PLACES=423, PETRI_TRANSITIONS=413} [2022-09-20 20:49:06,022 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 105 predicate places. [2022-09-20 20:49:06,022 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 413 transitions, 1738 flow [2022-09-20 20:49:06,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:06,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:49:06,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:49:06,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-20 20:49:06,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:49:06,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:49:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:49:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash 671100829, now seen corresponding path program 3 times [2022-09-20 20:49:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:49:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603260812] [2022-09-20 20:49:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:49:06,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:49:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:49:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 20:49:06,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:49:06,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603260812] [2022-09-20 20:49:06,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603260812] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:49:06,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625261122] [2022-09-20 20:49:06,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 20:49:06,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:49:06,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:49:06,419 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) [2022-09-20 20:49:06,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-20 20:49:06,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-20 20:49:06,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 20:49:06,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 20:49:06,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:49:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-20 20:49:06,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 20:49:06,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625261122] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:49:06,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 20:49:06,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 20 [2022-09-20 20:49:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093911344] [2022-09-20 20:49:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:49:06,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:49:06,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:49:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:49:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-09-20 20:49:06,638 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 350 [2022-09-20 20:49:06,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 413 transitions, 1738 flow. Second operand has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:06,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:49:06,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 350 [2022-09-20 20:49:06,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:49:11,273 INFO L130 PetriNetUnfolder]: 4796/33357 cut-off events. [2022-09-20 20:49:11,273 INFO L131 PetriNetUnfolder]: For 25009/26926 co-relation queries the response was YES. [2022-09-20 20:49:11,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54805 conditions, 33357 events. 4796/33357 cut-off events. For 25009/26926 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 481598 event pairs, 930 based on Foata normal form. 485/30871 useless extension candidates. Maximal degree in co-relation 54768. Up to 3163 conditions per place. [2022-09-20 20:49:11,577 INFO L137 encePairwiseOnDemand]: 341/350 looper letters, 130 selfloop transitions, 41 changer transitions 4/482 dead transitions. [2022-09-20 20:49:11,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 482 transitions, 2481 flow [2022-09-20 20:49:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:49:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:49:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-09-20 20:49:11,579 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8012244897959183 [2022-09-20 20:49:11,579 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-09-20 20:49:11,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-09-20 20:49:11,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:49:11,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-09-20 20:49:11,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:11,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:11,583 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:11,583 INFO L175 Difference]: Start difference. First operand has 423 places, 413 transitions, 1738 flow. Second operand 7 states and 1963 transitions. [2022-09-20 20:49:11,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 482 transitions, 2481 flow [2022-09-20 20:49:11,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 482 transitions, 2446 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-20 20:49:11,614 INFO L231 Difference]: Finished difference. Result has 429 places, 428 transitions, 2026 flow [2022-09-20 20:49:11,615 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2026, PETRI_PLACES=429, PETRI_TRANSITIONS=428} [2022-09-20 20:49:11,615 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 111 predicate places. [2022-09-20 20:49:11,615 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 428 transitions, 2026 flow [2022-09-20 20:49:11,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.85714285714283) internal successors, (1910), 7 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:11,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:49:11,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:49:11,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-20 20:49:11,831 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,SelfDestructingSolverStorable12 [2022-09-20 20:49:11,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:49:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:49:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash -118735961, now seen corresponding path program 4 times [2022-09-20 20:49:11,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:49:11,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585067397] [2022-09-20 20:49:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:49:11,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:49:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:49:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:49:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:49:12,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585067397] [2022-09-20 20:49:12,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585067397] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:49:12,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709766508] [2022-09-20 20:49:12,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 20:49:12,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:49:12,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:49:12,012 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) [2022-09-20 20:49:12,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-20 20:49:12,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 20:49:12,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 20:49:12,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 20:49:12,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:49:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 20:49:12,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:49:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-20 20:49:12,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709766508] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:49:12,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:49:12,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 37 [2022-09-20 20:49:12,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099427515] [2022-09-20 20:49:12,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:49:12,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-09-20 20:49:12,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:49:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-09-20 20:49:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-09-20 20:49:12,913 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 350 [2022-09-20 20:49:12,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 428 transitions, 2026 flow. Second operand has 37 states, 37 states have (on average 241.40540540540542) internal successors, (8932), 37 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:12,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:49:12,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 350 [2022-09-20 20:49:12,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:49:20,872 INFO L130 PetriNetUnfolder]: 6690/49055 cut-off events. [2022-09-20 20:49:20,872 INFO L131 PetriNetUnfolder]: For 51567/56405 co-relation queries the response was YES. [2022-09-20 20:49:21,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81901 conditions, 49055 events. 6690/49055 cut-off events. For 51567/56405 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 753080 event pairs, 2997 based on Foata normal form. 438/44925 useless extension candidates. Maximal degree in co-relation 81861. Up to 4273 conditions per place. [2022-09-20 20:49:21,437 INFO L137 encePairwiseOnDemand]: 322/350 looper letters, 301 selfloop transitions, 78 changer transitions 4/611 dead transitions. [2022-09-20 20:49:21,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 611 transitions, 4283 flow [2022-09-20 20:49:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-20 20:49:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-20 20:49:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 8258 transitions. [2022-09-20 20:49:21,444 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6939495798319327 [2022-09-20 20:49:21,444 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 8258 transitions. [2022-09-20 20:49:21,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 8258 transitions. [2022-09-20 20:49:21,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:49:21,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 8258 transitions. [2022-09-20 20:49:21,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 242.88235294117646) internal successors, (8258), 34 states have internal predecessors, (8258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:21,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 350.0) internal successors, (12250), 35 states have internal predecessors, (12250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:21,457 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 350.0) internal successors, (12250), 35 states have internal predecessors, (12250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:21,457 INFO L175 Difference]: Start difference. First operand has 429 places, 428 transitions, 2026 flow. Second operand 34 states and 8258 transitions. [2022-09-20 20:49:21,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 611 transitions, 4283 flow [2022-09-20 20:49:21,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 611 transitions, 4167 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-09-20 20:49:21,532 INFO L231 Difference]: Finished difference. Result has 466 places, 447 transitions, 2365 flow [2022-09-20 20:49:21,532 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2365, PETRI_PLACES=466, PETRI_TRANSITIONS=447} [2022-09-20 20:49:21,532 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 148 predicate places. [2022-09-20 20:49:21,533 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 447 transitions, 2365 flow [2022-09-20 20:49:21,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 241.40540540540542) internal successors, (8932), 37 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:21,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:49:21,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:49:21,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-20 20:49:21,751 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,SelfDestructingSolverStorable13 [2022-09-20 20:49:21,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:49:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:49:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2061324802, now seen corresponding path program 1 times [2022-09-20 20:49:21,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:49:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336859048] [2022-09-20 20:49:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:49:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:49:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:49:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:49:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:49:21,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336859048] [2022-09-20 20:49:21,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336859048] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:49:21,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:49:21,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:49:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259748454] [2022-09-20 20:49:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:49:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:49:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:49:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:49:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:49:21,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 350 [2022-09-20 20:49:21,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 447 transitions, 2365 flow. Second operand has 7 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:21,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:49:21,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 350 [2022-09-20 20:49:21,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:49:25,706 INFO L130 PetriNetUnfolder]: 2852/21180 cut-off events. [2022-09-20 20:49:25,706 INFO L131 PetriNetUnfolder]: For 18643/19855 co-relation queries the response was YES. [2022-09-20 20:49:25,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36146 conditions, 21180 events. 2852/21180 cut-off events. For 18643/19855 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 285150 event pairs, 1570 based on Foata normal form. 281/19731 useless extension candidates. Maximal degree in co-relation 36099. Up to 3839 conditions per place. [2022-09-20 20:49:25,916 INFO L137 encePairwiseOnDemand]: 339/350 looper letters, 94 selfloop transitions, 16 changer transitions 57/463 dead transitions. [2022-09-20 20:49:25,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 463 transitions, 2718 flow [2022-09-20 20:49:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:49:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:49:25,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2822 transitions. [2022-09-20 20:49:25,918 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8062857142857143 [2022-09-20 20:49:25,919 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2822 transitions. [2022-09-20 20:49:25,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2822 transitions. [2022-09-20 20:49:25,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:49:25,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2822 transitions. [2022-09-20 20:49:25,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 282.2) internal successors, (2822), 10 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:25,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:25,923 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 350.0) internal successors, (3850), 11 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:25,923 INFO L175 Difference]: Start difference. First operand has 466 places, 447 transitions, 2365 flow. Second operand 10 states and 2822 transitions. [2022-09-20 20:49:25,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 463 transitions, 2718 flow [2022-09-20 20:49:25,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 463 transitions, 2577 flow, removed 31 selfloop flow, removed 21 redundant places. [2022-09-20 20:49:25,960 INFO L231 Difference]: Finished difference. Result has 451 places, 404 transitions, 1835 flow [2022-09-20 20:49:25,961 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1835, PETRI_PLACES=451, PETRI_TRANSITIONS=404} [2022-09-20 20:49:25,961 INFO L287 CegarLoopForPetriNet]: 318 programPoint places, 133 predicate places. [2022-09-20 20:49:25,961 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 404 transitions, 1835 flow [2022-09-20 20:49:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:25,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:49:25,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:49:25,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 20:49:25,962 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:49:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:49:25,962 INFO L85 PathProgramCache]: Analyzing trace with hash 265611176, now seen corresponding path program 5 times [2022-09-20 20:49:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:49:25,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109854321] [2022-09-20 20:49:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:49:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:49:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:49:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 20:49:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:49:26,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109854321] [2022-09-20 20:49:26,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109854321] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 20:49:26,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065201393] [2022-09-20 20:49:26,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 20:49:26,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 20:49:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:49:26,131 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) [2022-09-20 20:49:26,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-20 20:49:26,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-09-20 20:49:26,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 20:49:26,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 18 conjunts are in the unsatisfiable core [2022-09-20 20:49:26,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 20:49:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-20 20:49:26,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 20:49:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-20 20:49:26,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065201393] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 20:49:26,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 20:49:26,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 45 [2022-09-20 20:49:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752032399] [2022-09-20 20:49:26,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 20:49:26,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-09-20 20:49:26,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:49:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-09-20 20:49:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-09-20 20:49:26,998 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 350 [2022-09-20 20:49:27,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 404 transitions, 1835 flow. Second operand has 45 states, 45 states have (on average 236.57777777777778) internal successors, (10646), 45 states have internal predecessors, (10646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:49:27,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:49:27,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 350 [2022-09-20 20:49:27,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand