/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:11:04,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:11:04,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:11:04,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:11:04,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:11:04,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:11:04,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:11:04,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:11:04,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:11:04,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:11:04,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:11:04,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:11:04,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:11:04,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:11:04,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:11:04,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:11:04,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:11:04,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:11:04,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:11:04,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:11:04,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:11:04,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:11:04,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:11:04,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:11:04,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:11:04,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:11:04,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:11:04,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:11:04,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:11:04,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:11:04,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:11:04,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:11:04,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:11:04,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:11:04,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:11:04,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:11:04,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:11:04,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:11:04,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:11:04,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:11:04,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:11:04,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 20:11:04,515 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:11:04,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:11:04,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:11:04,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:11:04,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:11:04,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:11:04,516 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:11:04,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:11:04,517 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:11:04,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:11:04,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:11:04,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:11:04,519 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:11:04,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:11:04,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:11:04,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:11:04,744 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:11:04,745 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:11:04,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2023-01-27 20:11:05,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:11:06,120 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:11:06,120 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2023-01-27 20:11:06,126 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9898b373a/6bb32a478b054aaeb2eb8d0505216230/FLAG1b907ee41 [2023-01-27 20:11:06,136 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9898b373a/6bb32a478b054aaeb2eb8d0505216230 [2023-01-27 20:11:06,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:11:06,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:11:06,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:11:06,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:11:06,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:11:06,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517e001e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06, skipping insertion in model container [2023-01-27 20:11:06,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:11:06,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:11:06,308 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2023-01-27 20:11:06,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:11:06,337 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:11:06,364 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2023-01-27 20:11:06,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:11:06,379 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:11:06,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06 WrapperNode [2023-01-27 20:11:06,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:11:06,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:11:06,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:11:06,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:11:06,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,421 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 277 [2023-01-27 20:11:06,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:11:06,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:11:06,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:11:06,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:11:06,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:11:06,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:11:06,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:11:06,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:11:06,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (1/1) ... [2023-01-27 20:11:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:11:06,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:06,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:11:06,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:11:06,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:11:06,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:11:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:11:06,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:11:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:11:06,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:11:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:11:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:11:06,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:11:06,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:11:06,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:11:06,528 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:11:06,617 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:11:06,619 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:11:07,025 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:11:07,039 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:11:07,040 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 20:11:07,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:11:07 BoogieIcfgContainer [2023-01-27 20:11:07,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:11:07,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:11:07,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:11:07,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:11:07,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:11:06" (1/3) ... [2023-01-27 20:11:07,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe1838c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:11:07, skipping insertion in model container [2023-01-27 20:11:07,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:11:06" (2/3) ... [2023-01-27 20:11:07,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe1838c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:11:07, skipping insertion in model container [2023-01-27 20:11:07,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:11:07" (3/3) ... [2023-01-27 20:11:07,056 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2023-01-27 20:11:07,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:11:07,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:11:07,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:11:07,204 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:11:07,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 318 transitions, 660 flow [2023-01-27 20:11:07,359 INFO L130 PetriNetUnfolder]: 28/315 cut-off events. [2023-01-27 20:11:07,359 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:11:07,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 28/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 492 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-01-27 20:11:07,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 318 transitions, 660 flow [2023-01-27 20:11:07,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 305 transitions, 628 flow [2023-01-27 20:11:07,381 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:11:07,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 305 transitions, 628 flow [2023-01-27 20:11:07,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 305 transitions, 628 flow [2023-01-27 20:11:07,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 305 transitions, 628 flow [2023-01-27 20:11:07,445 INFO L130 PetriNetUnfolder]: 28/305 cut-off events. [2023-01-27 20:11:07,446 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:11:07,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 305 events. 28/305 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 491 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-01-27 20:11:07,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 15390 [2023-01-27 20:11:14,997 INFO L134 LiptonReduction]: Checked pairs total: 14128 [2023-01-27 20:11:14,997 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-01-27 20:11:15,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:11:15,030 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;@4358bb56, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:11:15,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:11:15,045 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-01-27 20:11:15,045 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:11:15,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:15,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:15,047 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)] === [2023-01-27 20:11:15,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:15,052 INFO L85 PathProgramCache]: Analyzing trace with hash -153494726, now seen corresponding path program 1 times [2023-01-27 20:11:15,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439552252] [2023-01-27 20:11:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:11:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439552252] [2023-01-27 20:11:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439552252] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:15,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:11:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247000480] [2023-01-27 20:11:15,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:15,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:11:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:11:15,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:11:15,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 661 [2023-01-27 20:11:15,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:15,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:15,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 661 [2023-01-27 20:11:15,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:15,594 INFO L130 PetriNetUnfolder]: 370/545 cut-off events. [2023-01-27 20:11:15,595 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-01-27 20:11:15,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 545 events. 370/545 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1531 event pairs, 253 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 936. Up to 543 conditions per place. [2023-01-27 20:11:15,601 INFO L137 encePairwiseOnDemand]: 653/661 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-01-27 20:11:15,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 150 flow [2023-01-27 20:11:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:11:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:11:15,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-01-27 20:11:15,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059505799293999 [2023-01-27 20:11:15,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-01-27 20:11:15,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-01-27 20:11:15,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:15,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-01-27 20:11:15,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:15,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:15,640 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:15,642 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 805 transitions. [2023-01-27 20:11:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 150 flow [2023-01-27 20:11:15,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:11:15,649 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 98 flow [2023-01-27 20:11:15,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-01-27 20:11:15,656 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-01-27 20:11:15,656 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 98 flow [2023-01-27 20:11:15,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:15,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:15,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:15,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:11:15,658 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)] === [2023-01-27 20:11:15,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:15,658 INFO L85 PathProgramCache]: Analyzing trace with hash 567514681, now seen corresponding path program 1 times [2023-01-27 20:11:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301744790] [2023-01-27 20:11:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:11:15,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:15,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301744790] [2023-01-27 20:11:15,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301744790] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:15,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655996659] [2023-01-27 20:11:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:15,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:15,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:15,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:15,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:11:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:16,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:11:16,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:11:16,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:11:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:11:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655996659] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:11:16,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:11:16,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-01-27 20:11:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826150879] [2023-01-27 20:11:16,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:11:16,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:11:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:11:16,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:11:16,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 661 [2023-01-27 20:11:16,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 259.875) internal successors, (2079), 8 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:16,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:16,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 661 [2023-01-27 20:11:16,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:16,262 INFO L130 PetriNetUnfolder]: 370/554 cut-off events. [2023-01-27 20:11:16,262 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 20:11:16,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 554 events. 370/554 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1529 event pairs, 253 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 1106. Up to 543 conditions per place. [2023-01-27 20:11:16,265 INFO L137 encePairwiseOnDemand]: 654/661 looper letters, 27 selfloop transitions, 15 changer transitions 0/42 dead transitions. [2023-01-27 20:11:16,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 218 flow [2023-01-27 20:11:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:11:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:11:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1587 transitions. [2023-01-27 20:11:16,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001512859304085 [2023-01-27 20:11:16,274 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1587 transitions. [2023-01-27 20:11:16,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1587 transitions. [2023-01-27 20:11:16,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:16,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1587 transitions. [2023-01-27 20:11:16,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.5) internal successors, (1587), 6 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:16,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:16,287 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:16,287 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 98 flow. Second operand 6 states and 1587 transitions. [2023-01-27 20:11:16,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 218 flow [2023-01-27 20:11:16,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:11:16,289 INFO L231 Difference]: Finished difference. Result has 38 places, 42 transitions, 188 flow [2023-01-27 20:11:16,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=38, PETRI_TRANSITIONS=42} [2023-01-27 20:11:16,290 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-01-27 20:11:16,290 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 42 transitions, 188 flow [2023-01-27 20:11:16,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 259.875) internal successors, (2079), 8 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:16,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:16,291 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:16,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:16,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:16,499 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)] === [2023-01-27 20:11:16,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1258852288, now seen corresponding path program 2 times [2023-01-27 20:11:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:16,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352214152] [2023-01-27 20:11:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:11:16,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352214152] [2023-01-27 20:11:16,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352214152] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588458811] [2023-01-27 20:11:16,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:11:16,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:16,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:16,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:11:16,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:11:16,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:11:16,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 20:11:16,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:11:16,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:11:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588458811] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:16,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:11:16,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-27 20:11:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082148413] [2023-01-27 20:11:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:16,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:11:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:11:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:11:16,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 661 [2023-01-27 20:11:16,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:16,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:16,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 661 [2023-01-27 20:11:16,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:17,155 INFO L130 PetriNetUnfolder]: 644/962 cut-off events. [2023-01-27 20:11:17,155 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 20:11:17,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 962 events. 644/962 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3428 event pairs, 253 based on Foata normal form. 14/762 useless extension candidates. Maximal degree in co-relation 1928. Up to 555 conditions per place. [2023-01-27 20:11:17,161 INFO L137 encePairwiseOnDemand]: 657/661 looper letters, 69 selfloop transitions, 3 changer transitions 2/74 dead transitions. [2023-01-27 20:11:17,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 74 transitions, 407 flow [2023-01-27 20:11:17,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:11:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:11:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1167 transitions. [2023-01-27 20:11:17,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413767019667171 [2023-01-27 20:11:17,164 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1167 transitions. [2023-01-27 20:11:17,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1167 transitions. [2023-01-27 20:11:17,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:17,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1167 transitions. [2023-01-27 20:11:17,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.75) internal successors, (1167), 4 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:17,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:17,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:17,173 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 188 flow. Second operand 4 states and 1167 transitions. [2023-01-27 20:11:17,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 74 transitions, 407 flow [2023-01-27 20:11:17,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 74 transitions, 383 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-27 20:11:17,179 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 184 flow [2023-01-27 20:11:17,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-01-27 20:11:17,180 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-01-27 20:11:17,180 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 184 flow [2023-01-27 20:11:17,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:17,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:17,181 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:17,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:17,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-27 20:11:17,389 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)] === [2023-01-27 20:11:17,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash 445073096, now seen corresponding path program 3 times [2023-01-27 20:11:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:17,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432979129] [2023-01-27 20:11:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:11:17,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:17,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432979129] [2023-01-27 20:11:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432979129] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091010048] [2023-01-27 20:11:17,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:11:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:17,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:17,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:11:17,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:11:17,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:11:17,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 20:11:17,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:11:17,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:11:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091010048] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:11:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-01-27 20:11:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274210944] [2023-01-27 20:11:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:17,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:11:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:17,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:11:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:11:17,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 661 [2023-01-27 20:11:17,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:17,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:17,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 661 [2023-01-27 20:11:17,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:17,995 INFO L130 PetriNetUnfolder]: 758/1124 cut-off events. [2023-01-27 20:11:17,995 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2023-01-27 20:11:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1124 events. 758/1124 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4232 event pairs, 104 based on Foata normal form. 24/974 useless extension candidates. Maximal degree in co-relation 2598. Up to 775 conditions per place. [2023-01-27 20:11:18,001 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 63 selfloop transitions, 5 changer transitions 1/69 dead transitions. [2023-01-27 20:11:18,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 392 flow [2023-01-27 20:11:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:11:18,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:11:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1158 transitions. [2023-01-27 20:11:18,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4379727685325265 [2023-01-27 20:11:18,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1158 transitions. [2023-01-27 20:11:18,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1158 transitions. [2023-01-27 20:11:18,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:18,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1158 transitions. [2023-01-27 20:11:18,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 289.5) internal successors, (1158), 4 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:18,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:18,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:18,013 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 184 flow. Second operand 4 states and 1158 transitions. [2023-01-27 20:11:18,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 392 flow [2023-01-27 20:11:18,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 69 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:11:18,016 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 213 flow [2023-01-27 20:11:18,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-27 20:11:18,017 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-01-27 20:11:18,018 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 213 flow [2023-01-27 20:11:18,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:18,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:18,019 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:18,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:18,225 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)] === [2023-01-27 20:11:18,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash -447520588, now seen corresponding path program 4 times [2023-01-27 20:11:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:18,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033216732] [2023-01-27 20:11:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:11:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:18,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033216732] [2023-01-27 20:11:18,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033216732] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:18,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194554163] [2023-01-27 20:11:18,458 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:11:18,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:18,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:18,460 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:18,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:11:18,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:11:18,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:11:18,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:11:18,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:11:18,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:11:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:11:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194554163] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:11:18,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:11:18,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-27 20:11:18,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724594199] [2023-01-27 20:11:18,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:11:18,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 20:11:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:18,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 20:11:18,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-01-27 20:11:18,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 661 [2023-01-27 20:11:18,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 213 flow. Second operand has 17 states, 17 states have (on average 258.3529411764706) internal successors, (4392), 17 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:18,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:18,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 661 [2023-01-27 20:11:18,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:19,036 INFO L130 PetriNetUnfolder]: 758/1127 cut-off events. [2023-01-27 20:11:19,036 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2023-01-27 20:11:19,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2864 conditions, 1127 events. 758/1127 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3903 event pairs, 525 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 2770. Up to 1113 conditions per place. [2023-01-27 20:11:19,041 INFO L137 encePairwiseOnDemand]: 654/661 looper letters, 31 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2023-01-27 20:11:19,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 329 flow [2023-01-27 20:11:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:11:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:11:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1840 transitions. [2023-01-27 20:11:19,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397665874216555 [2023-01-27 20:11:19,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1840 transitions. [2023-01-27 20:11:19,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1840 transitions. [2023-01-27 20:11:19,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:19,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1840 transitions. [2023-01-27 20:11:19,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 262.85714285714283) internal successors, (1840), 7 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 661.0) internal successors, (5288), 8 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 661.0) internal successors, (5288), 8 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,059 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 213 flow. Second operand 7 states and 1840 transitions. [2023-01-27 20:11:19,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 329 flow [2023-01-27 20:11:19,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:11:19,062 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 278 flow [2023-01-27 20:11:19,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-01-27 20:11:19,064 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-01-27 20:11:19,064 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 278 flow [2023-01-27 20:11:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 258.3529411764706) internal successors, (4392), 17 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:19,066 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:19,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:19,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:19,273 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)] === [2023-01-27 20:11:19,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1897962517, now seen corresponding path program 5 times [2023-01-27 20:11:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512909894] [2023-01-27 20:11:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:11:19,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512909894] [2023-01-27 20:11:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512909894] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:19,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:19,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:11:19,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132690539] [2023-01-27 20:11:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:19,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:11:19,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:11:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:11:19,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 661 [2023-01-27 20:11:19,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:19,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 661 [2023-01-27 20:11:19,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:19,839 INFO L130 PetriNetUnfolder]: 659/978 cut-off events. [2023-01-27 20:11:19,839 INFO L131 PetriNetUnfolder]: For 654/654 co-relation queries the response was YES. [2023-01-27 20:11:19,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2516 conditions, 978 events. 659/978 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3439 event pairs, 229 based on Foata normal form. 24/858 useless extension candidates. Maximal degree in co-relation 2402. Up to 582 conditions per place. [2023-01-27 20:11:19,845 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 68 selfloop transitions, 6 changer transitions 3/77 dead transitions. [2023-01-27 20:11:19,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 501 flow [2023-01-27 20:11:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:11:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:11:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1165 transitions. [2023-01-27 20:11:19,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406202723146747 [2023-01-27 20:11:19,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1165 transitions. [2023-01-27 20:11:19,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1165 transitions. [2023-01-27 20:11:19,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:19,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1165 transitions. [2023-01-27 20:11:19,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,855 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 278 flow. Second operand 4 states and 1165 transitions. [2023-01-27 20:11:19,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 501 flow [2023-01-27 20:11:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 465 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:11:19,858 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 262 flow [2023-01-27 20:11:19,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-01-27 20:11:19,859 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-01-27 20:11:19,859 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 262 flow [2023-01-27 20:11:19,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:19,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:19,860 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:11:19,860 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)] === [2023-01-27 20:11:19,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash 372837355, now seen corresponding path program 1 times [2023-01-27 20:11:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287878359] [2023-01-27 20:11:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287878359] [2023-01-27 20:11:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287878359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:20,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:11:20,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4620039] [2023-01-27 20:11:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:20,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:11:20,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:11:20,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:11:20,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 661 [2023-01-27 20:11:20,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:20,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:20,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 661 [2023-01-27 20:11:20,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:20,330 INFO L130 PetriNetUnfolder]: 976/1420 cut-off events. [2023-01-27 20:11:20,330 INFO L131 PetriNetUnfolder]: For 1859/1859 co-relation queries the response was YES. [2023-01-27 20:11:20,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3968 conditions, 1420 events. 976/1420 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5119 event pairs, 250 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 3870. Up to 916 conditions per place. [2023-01-27 20:11:20,339 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 71 selfloop transitions, 6 changer transitions 2/79 dead transitions. [2023-01-27 20:11:20,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 548 flow [2023-01-27 20:11:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:11:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:11:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1119 transitions. [2023-01-27 20:11:20,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232223903177005 [2023-01-27 20:11:20,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1119 transitions. [2023-01-27 20:11:20,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1119 transitions. [2023-01-27 20:11:20,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:20,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1119 transitions. [2023-01-27 20:11:20,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.75) internal successors, (1119), 4 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:20,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:20,349 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:20,349 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 262 flow. Second operand 4 states and 1119 transitions. [2023-01-27 20:11:20,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 548 flow [2023-01-27 20:11:20,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 520 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 20:11:20,354 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 294 flow [2023-01-27 20:11:20,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-01-27 20:11:20,355 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-01-27 20:11:20,355 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 294 flow [2023-01-27 20:11:20,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:20,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:20,356 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:11:20,356 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)] === [2023-01-27 20:11:20,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1786123932, now seen corresponding path program 1 times [2023-01-27 20:11:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619179564] [2023-01-27 20:11:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:20,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619179564] [2023-01-27 20:11:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619179564] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:20,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:20,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:11:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724662749] [2023-01-27 20:11:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:11:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:11:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:11:20,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 661 [2023-01-27 20:11:20,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:20,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:20,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 661 [2023-01-27 20:11:20,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:21,153 INFO L130 PetriNetUnfolder]: 1778/2594 cut-off events. [2023-01-27 20:11:21,153 INFO L131 PetriNetUnfolder]: For 2916/2916 co-relation queries the response was YES. [2023-01-27 20:11:21,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 2594 events. 1778/2594 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11140 event pairs, 691 based on Foata normal form. 20/2402 useless extension candidates. Maximal degree in co-relation 7186. Up to 1445 conditions per place. [2023-01-27 20:11:21,168 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 85 selfloop transitions, 5 changer transitions 17/107 dead transitions. [2023-01-27 20:11:21,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 107 transitions, 719 flow [2023-01-27 20:11:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:11:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:11:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1433 transitions. [2023-01-27 20:11:21,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335854765506808 [2023-01-27 20:11:21,172 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1433 transitions. [2023-01-27 20:11:21,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1433 transitions. [2023-01-27 20:11:21,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:21,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1433 transitions. [2023-01-27 20:11:21,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 286.6) internal successors, (1433), 5 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:21,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:21,180 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:21,180 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 294 flow. Second operand 5 states and 1433 transitions. [2023-01-27 20:11:21,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 107 transitions, 719 flow [2023-01-27 20:11:21,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 717 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 20:11:21,184 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 320 flow [2023-01-27 20:11:21,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-01-27 20:11:21,185 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 26 predicate places. [2023-01-27 20:11:21,185 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 320 flow [2023-01-27 20:11:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:21,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:21,186 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:11:21,186 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)] === [2023-01-27 20:11:21,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:21,186 INFO L85 PathProgramCache]: Analyzing trace with hash 412239492, now seen corresponding path program 2 times [2023-01-27 20:11:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:21,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022924829] [2023-01-27 20:11:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022924829] [2023-01-27 20:11:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022924829] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:21,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287922157] [2023-01-27 20:11:21,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:11:21,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:21,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:21,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:21,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:11:21,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:11:21,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:11:21,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 20:11:21,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:21,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:11:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287922157] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 20:11:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2023-01-27 20:11:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588943916] [2023-01-27 20:11:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:21,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:11:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:11:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:11:21,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 661 [2023-01-27 20:11:21,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:21,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:21,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 661 [2023-01-27 20:11:21,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:22,366 INFO L130 PetriNetUnfolder]: 1810/2621 cut-off events. [2023-01-27 20:11:22,366 INFO L131 PetriNetUnfolder]: For 4276/4276 co-relation queries the response was YES. [2023-01-27 20:11:22,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8286 conditions, 2621 events. 1810/2621 cut-off events. For 4276/4276 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10967 event pairs, 221 based on Foata normal form. 36/2657 useless extension candidates. Maximal degree in co-relation 8182. Up to 695 conditions per place. [2023-01-27 20:11:22,385 INFO L137 encePairwiseOnDemand]: 653/661 looper letters, 113 selfloop transitions, 18 changer transitions 4/135 dead transitions. [2023-01-27 20:11:22,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 135 transitions, 962 flow [2023-01-27 20:11:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:11:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:11:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1993 transitions. [2023-01-27 20:11:22,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43073265614869244 [2023-01-27 20:11:22,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1993 transitions. [2023-01-27 20:11:22,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1993 transitions. [2023-01-27 20:11:22,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:22,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1993 transitions. [2023-01-27 20:11:22,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:22,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 661.0) internal successors, (5288), 8 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:22,399 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 661.0) internal successors, (5288), 8 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:22,399 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 320 flow. Second operand 7 states and 1993 transitions. [2023-01-27 20:11:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 135 transitions, 962 flow [2023-01-27 20:11:22,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 135 transitions, 948 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:11:22,410 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 425 flow [2023-01-27 20:11:22,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2023-01-27 20:11:22,411 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2023-01-27 20:11:22,411 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 425 flow [2023-01-27 20:11:22,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:22,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:22,412 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:22,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:22,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:22,618 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)] === [2023-01-27 20:11:22,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash -191395198, now seen corresponding path program 3 times [2023-01-27 20:11:22,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:22,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790213224] [2023-01-27 20:11:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:22,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:22,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790213224] [2023-01-27 20:11:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790213224] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:22,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:22,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:11:22,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47932486] [2023-01-27 20:11:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:22,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:11:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:22,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:11:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:11:22,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 661 [2023-01-27 20:11:22,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:22,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:22,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 661 [2023-01-27 20:11:22,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:23,304 INFO L130 PetriNetUnfolder]: 2058/2982 cut-off events. [2023-01-27 20:11:23,304 INFO L131 PetriNetUnfolder]: For 5964/5964 co-relation queries the response was YES. [2023-01-27 20:11:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10320 conditions, 2982 events. 2058/2982 cut-off events. For 5964/5964 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12878 event pairs, 633 based on Foata normal form. 20/3002 useless extension candidates. Maximal degree in co-relation 10214. Up to 1481 conditions per place. [2023-01-27 20:11:23,324 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 93 selfloop transitions, 13 changer transitions 16/122 dead transitions. [2023-01-27 20:11:23,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 122 transitions, 927 flow [2023-01-27 20:11:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:11:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:11:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1433 transitions. [2023-01-27 20:11:23,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335854765506808 [2023-01-27 20:11:23,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1433 transitions. [2023-01-27 20:11:23,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1433 transitions. [2023-01-27 20:11:23,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:23,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1433 transitions. [2023-01-27 20:11:23,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 286.6) internal successors, (1433), 5 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:23,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:23,334 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:23,334 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 425 flow. Second operand 5 states and 1433 transitions. [2023-01-27 20:11:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 122 transitions, 927 flow [2023-01-27 20:11:23,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 912 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 20:11:23,358 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 507 flow [2023-01-27 20:11:23,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2023-01-27 20:11:23,359 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2023-01-27 20:11:23,359 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 507 flow [2023-01-27 20:11:23,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:23,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:23,359 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:23,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:11:23,360 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)] === [2023-01-27 20:11:23,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:23,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1805816700, now seen corresponding path program 4 times [2023-01-27 20:11:23,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:23,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090285058] [2023-01-27 20:11:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:23,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:23,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090285058] [2023-01-27 20:11:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090285058] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:23,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:11:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242236875] [2023-01-27 20:11:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:11:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:11:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:11:23,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 661 [2023-01-27 20:11:23,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:23,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:23,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 661 [2023-01-27 20:11:23,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:24,048 INFO L130 PetriNetUnfolder]: 1966/2849 cut-off events. [2023-01-27 20:11:24,049 INFO L131 PetriNetUnfolder]: For 7858/7858 co-relation queries the response was YES. [2023-01-27 20:11:24,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 2849 events. 1966/2849 cut-off events. For 7858/7858 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12097 event pairs, 683 based on Foata normal form. 20/2869 useless extension candidates. Maximal degree in co-relation 10442. Up to 1800 conditions per place. [2023-01-27 20:11:24,069 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 87 selfloop transitions, 14 changer transitions 18/119 dead transitions. [2023-01-27 20:11:24,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 119 transitions, 984 flow [2023-01-27 20:11:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:11:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:11:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1430 transitions. [2023-01-27 20:11:24,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43267776096822996 [2023-01-27 20:11:24,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1430 transitions. [2023-01-27 20:11:24,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1430 transitions. [2023-01-27 20:11:24,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:24,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1430 transitions. [2023-01-27 20:11:24,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 286.0) internal successors, (1430), 5 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,079 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 507 flow. Second operand 5 states and 1430 transitions. [2023-01-27 20:11:24,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 119 transitions, 984 flow [2023-01-27 20:11:24,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 119 transitions, 967 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 20:11:24,104 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 590 flow [2023-01-27 20:11:24,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2023-01-27 20:11:24,104 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 40 predicate places. [2023-01-27 20:11:24,104 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 590 flow [2023-01-27 20:11:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:24,105 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:11:24,105 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)] === [2023-01-27 20:11:24,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1234754154, now seen corresponding path program 5 times [2023-01-27 20:11:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563225974] [2023-01-27 20:11:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:24,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:24,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563225974] [2023-01-27 20:11:24,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563225974] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:24,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:24,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:11:24,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384513568] [2023-01-27 20:11:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:24,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:11:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:11:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:11:24,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 661 [2023-01-27 20:11:24,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:24,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 661 [2023-01-27 20:11:24,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:24,819 INFO L130 PetriNetUnfolder]: 1982/2860 cut-off events. [2023-01-27 20:11:24,819 INFO L131 PetriNetUnfolder]: For 9015/9015 co-relation queries the response was YES. [2023-01-27 20:11:24,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10869 conditions, 2860 events. 1982/2860 cut-off events. For 9015/9015 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12057 event pairs, 587 based on Foata normal form. 36/2896 useless extension candidates. Maximal degree in co-relation 10758. Up to 1481 conditions per place. [2023-01-27 20:11:24,837 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 113 selfloop transitions, 20 changer transitions 2/135 dead transitions. [2023-01-27 20:11:24,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 1110 flow [2023-01-27 20:11:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:11:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:11:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2023-01-27 20:11:24,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324256177508825 [2023-01-27 20:11:24,842 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2023-01-27 20:11:24,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2023-01-27 20:11:24,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:24,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2023-01-27 20:11:24,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,850 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,850 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 590 flow. Second operand 6 states and 1715 transitions. [2023-01-27 20:11:24,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 1110 flow [2023-01-27 20:11:24,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 135 transitions, 1091 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 20:11:24,877 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 659 flow [2023-01-27 20:11:24,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=659, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2023-01-27 20:11:24,878 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2023-01-27 20:11:24,878 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 659 flow [2023-01-27 20:11:24,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:24,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:24,879 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:24,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:11:24,879 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)] === [2023-01-27 20:11:24,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash -960619028, now seen corresponding path program 6 times [2023-01-27 20:11:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157497527] [2023-01-27 20:11:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:24,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:11:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157497527] [2023-01-27 20:11:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157497527] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:11:25,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:11:25,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:11:25,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246784198] [2023-01-27 20:11:25,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:11:25,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:11:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:11:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:11:25,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 661 [2023-01-27 20:11:25,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 659 flow. Second operand has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:25,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:25,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 661 [2023-01-27 20:11:25,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:25,589 INFO L130 PetriNetUnfolder]: 1978/2850 cut-off events. [2023-01-27 20:11:25,590 INFO L131 PetriNetUnfolder]: For 10685/10685 co-relation queries the response was YES. [2023-01-27 20:11:25,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 2850 events. 1978/2850 cut-off events. For 10685/10685 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11901 event pairs, 669 based on Foata normal form. 36/2886 useless extension candidates. Maximal degree in co-relation 11499. Up to 1666 conditions per place. [2023-01-27 20:11:25,610 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 110 selfloop transitions, 16 changer transitions 5/131 dead transitions. [2023-01-27 20:11:25,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 1155 flow [2023-01-27 20:11:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:11:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:11:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2023-01-27 20:11:25,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43116490166414523 [2023-01-27 20:11:25,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1710 transitions. [2023-01-27 20:11:25,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1710 transitions. [2023-01-27 20:11:25,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:25,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1710 transitions. [2023-01-27 20:11:25,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:25,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:25,623 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 661.0) internal successors, (4627), 7 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:25,623 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 659 flow. Second operand 6 states and 1710 transitions. [2023-01-27 20:11:25,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 1155 flow [2023-01-27 20:11:25,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 1135 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:11:25,663 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 675 flow [2023-01-27 20:11:25,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=675, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2023-01-27 20:11:25,664 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-01-27 20:11:25,664 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 675 flow [2023-01-27 20:11:25,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.6) internal successors, (1388), 5 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:25,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:25,665 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:25,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 20:11:25,665 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)] === [2023-01-27 20:11:25,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1450948268, now seen corresponding path program 1 times [2023-01-27 20:11:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109019183] [2023-01-27 20:11:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:25,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:11:28,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109019183] [2023-01-27 20:11:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109019183] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673602339] [2023-01-27 20:11:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:28,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:28,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:28,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:28,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:11:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:28,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-27 20:11:28,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:28,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:11:28,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 20:11:29,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:11:29,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:11:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:11:29,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:11:30,102 WARN L839 $PredicateComparison]: unable to prove that (forall ((~o_4~0.base Int) (v_ArrVal_967 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_967))) (let ((.cse0 (select (select .cse1 ~o_4~0.base) c_~o_4~0.offset)) (.cse2 (select .cse1 ~o_2~0.base))) (or (< .cse0 (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset)) (< (select .cse2 c_~o_2~0.offset) (+ .cse0 1)) (< |c_thread1Thread1of1ForFork2_#t~mem1#1| (+ (select .cse2 (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 1)))))) is different from false [2023-01-27 20:11:30,229 INFO L321 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-01-27 20:11:30,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 188 treesize of output 233 [2023-01-27 20:11:30,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:11:30,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 156 [2023-01-27 20:11:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:11:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673602339] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:11:41,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:11:41,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 12] total 47 [2023-01-27 20:11:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002090000] [2023-01-27 20:11:41,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:11:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-01-27 20:11:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:41,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-01-27 20:11:41,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2072, Unknown=1, NotChecked=92, Total=2352 [2023-01-27 20:11:41,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 661 [2023-01-27 20:11:41,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 675 flow. Second operand has 49 states, 49 states have (on average 194.85714285714286) internal successors, (9548), 49 states have internal predecessors, (9548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:41,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:41,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 661 [2023-01-27 20:11:41,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:48,186 INFO L130 PetriNetUnfolder]: 5790/8410 cut-off events. [2023-01-27 20:11:48,186 INFO L131 PetriNetUnfolder]: For 30070/30070 co-relation queries the response was YES. [2023-01-27 20:11:48,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33259 conditions, 8410 events. 5790/8410 cut-off events. For 30070/30070 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 44922 event pairs, 435 based on Foata normal form. 3/8413 useless extension candidates. Maximal degree in co-relation 33144. Up to 2105 conditions per place. [2023-01-27 20:11:48,249 INFO L137 encePairwiseOnDemand]: 641/661 looper letters, 361 selfloop transitions, 190 changer transitions 28/579 dead transitions. [2023-01-27 20:11:48,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 579 transitions, 5132 flow [2023-01-27 20:11:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-27 20:11:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-27 20:11:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7931 transitions. [2023-01-27 20:11:48,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076535164281004 [2023-01-27 20:11:48,271 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7931 transitions. [2023-01-27 20:11:48,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7931 transitions. [2023-01-27 20:11:48,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:48,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7931 transitions. [2023-01-27 20:11:48,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 203.35897435897436) internal successors, (7931), 39 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:48,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 661.0) internal successors, (26440), 40 states have internal predecessors, (26440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:48,324 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 661.0) internal successors, (26440), 40 states have internal predecessors, (26440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:48,324 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 675 flow. Second operand 39 states and 7931 transitions. [2023-01-27 20:11:48,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 579 transitions, 5132 flow [2023-01-27 20:11:48,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 579 transitions, 4672 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-01-27 20:11:48,469 INFO L231 Difference]: Finished difference. Result has 135 places, 274 transitions, 3074 flow [2023-01-27 20:11:48,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3074, PETRI_PLACES=135, PETRI_TRANSITIONS=274} [2023-01-27 20:11:48,470 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2023-01-27 20:11:48,470 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 274 transitions, 3074 flow [2023-01-27 20:11:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 194.85714285714286) internal successors, (9548), 49 states have internal predecessors, (9548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:48,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:48,472 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:48,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 20:11:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:48,679 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)] === [2023-01-27 20:11:48,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash -926238340, now seen corresponding path program 2 times [2023-01-27 20:11:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:48,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005007677] [2023-01-27 20:11:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:11:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005007677] [2023-01-27 20:11:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005007677] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130180465] [2023-01-27 20:11:50,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:11:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:50,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:50,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:11:50,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:11:50,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:11:50,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 52 conjunts are in the unsatisfiable core [2023-01-27 20:11:50,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:11:51,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:11:51,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:11:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:11:51,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:11:52,023 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:11:52,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:11:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:11:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130180465] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:11:52,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:11:52,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 10] total 44 [2023-01-27 20:11:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210447205] [2023-01-27 20:11:52,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:11:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-01-27 20:11:52,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:11:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-01-27 20:11:52,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1742, Unknown=0, NotChecked=0, Total=1980 [2023-01-27 20:11:52,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 661 [2023-01-27 20:11:52,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 274 transitions, 3074 flow. Second operand has 45 states, 45 states have (on average 195.0222222222222) internal successors, (8776), 45 states have internal predecessors, (8776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:52,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:11:52,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 661 [2023-01-27 20:11:52,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:11:55,597 INFO L130 PetriNetUnfolder]: 7422/10743 cut-off events. [2023-01-27 20:11:55,597 INFO L131 PetriNetUnfolder]: For 70157/70157 co-relation queries the response was YES. [2023-01-27 20:11:55,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56089 conditions, 10743 events. 7422/10743 cut-off events. For 70157/70157 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 59383 event pairs, 1456 based on Foata normal form. 2/10745 useless extension candidates. Maximal degree in co-relation 55941. Up to 6321 conditions per place. [2023-01-27 20:11:55,668 INFO L137 encePairwiseOnDemand]: 642/661 looper letters, 264 selfloop transitions, 264 changer transitions 125/653 dead transitions. [2023-01-27 20:11:55,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 653 transitions, 7992 flow [2023-01-27 20:11:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-27 20:11:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-27 20:11:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 5632 transitions. [2023-01-27 20:11:55,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30430084287875514 [2023-01-27 20:11:55,675 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 5632 transitions. [2023-01-27 20:11:55,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 5632 transitions. [2023-01-27 20:11:55,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:11:55,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 5632 transitions. [2023-01-27 20:11:55,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 201.14285714285714) internal successors, (5632), 28 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:55,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 661.0) internal successors, (19169), 29 states have internal predecessors, (19169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:55,701 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 661.0) internal successors, (19169), 29 states have internal predecessors, (19169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:55,701 INFO L175 Difference]: Start difference. First operand has 135 places, 274 transitions, 3074 flow. Second operand 28 states and 5632 transitions. [2023-01-27 20:11:55,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 653 transitions, 7992 flow [2023-01-27 20:11:56,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 653 transitions, 7775 flow, removed 96 selfloop flow, removed 5 redundant places. [2023-01-27 20:11:56,055 INFO L231 Difference]: Finished difference. Result has 172 places, 406 transitions, 5443 flow [2023-01-27 20:11:56,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5443, PETRI_PLACES=172, PETRI_TRANSITIONS=406} [2023-01-27 20:11:56,055 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 138 predicate places. [2023-01-27 20:11:56,056 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 406 transitions, 5443 flow [2023-01-27 20:11:56,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 195.0222222222222) internal successors, (8776), 45 states have internal predecessors, (8776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:11:56,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:11:56,057 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:11:56,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 20:11:56,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:56,264 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)] === [2023-01-27 20:11:56,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:11:56,265 INFO L85 PathProgramCache]: Analyzing trace with hash -241748976, now seen corresponding path program 3 times [2023-01-27 20:11:56,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:11:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248644893] [2023-01-27 20:11:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:11:56,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:11:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:11:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:11:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:11:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248644893] [2023-01-27 20:11:59,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248644893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:11:59,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917398064] [2023-01-27 20:11:59,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:11:59,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:11:59,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:11:59,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:11:59,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:12:00,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 20:12:00,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:00,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:00,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:00,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:00,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:00,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:01,071 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:12:01,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:12:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917398064] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:12:01,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:12:01,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 15, 10] total 50 [2023-01-27 20:12:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208687561] [2023-01-27 20:12:01,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:12:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-01-27 20:12:01,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-01-27 20:12:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2329, Unknown=0, NotChecked=0, Total=2550 [2023-01-27 20:12:01,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 661 [2023-01-27 20:12:01,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 406 transitions, 5443 flow. Second operand has 51 states, 51 states have (on average 191.80392156862746) internal successors, (9782), 51 states have internal predecessors, (9782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:01,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:01,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 661 [2023-01-27 20:12:01,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:08,288 INFO L130 PetriNetUnfolder]: 9549/13709 cut-off events. [2023-01-27 20:12:08,289 INFO L131 PetriNetUnfolder]: For 165171/165171 co-relation queries the response was YES. [2023-01-27 20:12:08,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94940 conditions, 13709 events. 9549/13709 cut-off events. For 165171/165171 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 77647 event pairs, 1592 based on Foata normal form. 1/13710 useless extension candidates. Maximal degree in co-relation 94766. Up to 6221 conditions per place. [2023-01-27 20:12:08,432 INFO L137 encePairwiseOnDemand]: 643/661 looper letters, 357 selfloop transitions, 465 changer transitions 40/862 dead transitions. [2023-01-27 20:12:08,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 862 transitions, 12362 flow [2023-01-27 20:12:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-27 20:12:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-27 20:12:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7688 transitions. [2023-01-27 20:12:08,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29822723922572636 [2023-01-27 20:12:08,446 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7688 transitions. [2023-01-27 20:12:08,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7688 transitions. [2023-01-27 20:12:08,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:08,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7688 transitions. [2023-01-27 20:12:08,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 197.12820512820514) internal successors, (7688), 39 states have internal predecessors, (7688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:08,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 661.0) internal successors, (26440), 40 states have internal predecessors, (26440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:08,592 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 661.0) internal successors, (26440), 40 states have internal predecessors, (26440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:08,592 INFO L175 Difference]: Start difference. First operand has 172 places, 406 transitions, 5443 flow. Second operand 39 states and 7688 transitions. [2023-01-27 20:12:08,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 862 transitions, 12362 flow [2023-01-27 20:12:09,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 862 transitions, 11940 flow, removed 201 selfloop flow, removed 7 redundant places. [2023-01-27 20:12:09,653 INFO L231 Difference]: Finished difference. Result has 217 places, 628 transitions, 9722 flow [2023-01-27 20:12:09,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=5172, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=9722, PETRI_PLACES=217, PETRI_TRANSITIONS=628} [2023-01-27 20:12:09,653 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 183 predicate places. [2023-01-27 20:12:09,653 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 628 transitions, 9722 flow [2023-01-27 20:12:09,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 191.80392156862746) internal successors, (9782), 51 states have internal predecessors, (9782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:09,655 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:09,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:09,855 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,SelfDestructingSolverStorable15 [2023-01-27 20:12:09,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:12:09,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash 108272644, now seen corresponding path program 4 times [2023-01-27 20:12:09,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:09,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044607010] [2023-01-27 20:12:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:09,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:10,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044607010] [2023-01-27 20:12:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044607010] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:10,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586285984] [2023-01-27 20:12:10,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:12:10,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:10,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:10,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:11,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 20:12:11,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:12:11,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:11,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:11,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:11,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:11,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:11,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:12,022 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:12:12,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:12:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:12,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586285984] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:12:12,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:12:12,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 29 [2023-01-27 20:12:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514057179] [2023-01-27 20:12:12,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:12:12,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 20:12:12,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 20:12:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:12:12,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:12:12,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 628 transitions, 9722 flow. Second operand has 30 states, 30 states have (on average 224.2) internal successors, (6726), 30 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:12,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:12,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:12:12,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:16,095 INFO L130 PetriNetUnfolder]: 9249/13287 cut-off events. [2023-01-27 20:12:16,095 INFO L131 PetriNetUnfolder]: For 263156/263156 co-relation queries the response was YES. [2023-01-27 20:12:16,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107755 conditions, 13287 events. 9249/13287 cut-off events. For 263156/263156 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 74596 event pairs, 1848 based on Foata normal form. 1/13288 useless extension candidates. Maximal degree in co-relation 107579. Up to 6290 conditions per place. [2023-01-27 20:12:16,223 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 395 selfloop transitions, 405 changer transitions 4/804 dead transitions. [2023-01-27 20:12:16,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 804 transitions, 13251 flow [2023-01-27 20:12:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 20:12:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 20:12:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4647 transitions. [2023-01-27 20:12:16,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515128593040847 [2023-01-27 20:12:16,229 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4647 transitions. [2023-01-27 20:12:16,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4647 transitions. [2023-01-27 20:12:16,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:16,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4647 transitions. [2023-01-27 20:12:16,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 232.35) internal successors, (4647), 20 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:16,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 661.0) internal successors, (13881), 21 states have internal predecessors, (13881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:16,244 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 661.0) internal successors, (13881), 21 states have internal predecessors, (13881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:16,244 INFO L175 Difference]: Start difference. First operand has 217 places, 628 transitions, 9722 flow. Second operand 20 states and 4647 transitions. [2023-01-27 20:12:16,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 804 transitions, 13251 flow [2023-01-27 20:12:17,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 804 transitions, 12974 flow, removed 119 selfloop flow, removed 11 redundant places. [2023-01-27 20:12:17,662 INFO L231 Difference]: Finished difference. Result has 222 places, 631 transitions, 10345 flow [2023-01-27 20:12:17,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=9481, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10345, PETRI_PLACES=222, PETRI_TRANSITIONS=631} [2023-01-27 20:12:17,663 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 188 predicate places. [2023-01-27 20:12:17,663 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 631 transitions, 10345 flow [2023-01-27 20:12:17,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 224.2) internal successors, (6726), 30 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:17,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:17,664 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:17,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:17,869 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,SelfDestructingSolverStorable16 [2023-01-27 20:12:17,869 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:12:17,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1357652534, now seen corresponding path program 5 times [2023-01-27 20:12:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:17,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975865971] [2023-01-27 20:12:17,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975865971] [2023-01-27 20:12:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975865971] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913839779] [2023-01-27 20:12:19,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:12:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:19,005 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:19,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 20:12:19,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:12:19,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:19,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:19,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:19,664 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:19,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:19,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:20,113 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:12:20,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:12:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913839779] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:12:20,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:12:20,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 29 [2023-01-27 20:12:20,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349510346] [2023-01-27 20:12:20,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:12:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 20:12:20,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 20:12:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:12:20,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:12:20,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 631 transitions, 10345 flow. Second operand has 30 states, 30 states have (on average 224.2) internal successors, (6726), 30 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:20,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:20,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:12:20,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:24,585 INFO L130 PetriNetUnfolder]: 9282/13347 cut-off events. [2023-01-27 20:12:24,585 INFO L131 PetriNetUnfolder]: For 273433/273433 co-relation queries the response was YES. [2023-01-27 20:12:24,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110482 conditions, 13347 events. 9282/13347 cut-off events. For 273433/273433 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 75111 event pairs, 1823 based on Foata normal form. 1/13348 useless extension candidates. Maximal degree in co-relation 110330. Up to 5982 conditions per place. [2023-01-27 20:12:24,719 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 377 selfloop transitions, 450 changer transitions 4/831 dead transitions. [2023-01-27 20:12:24,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 831 transitions, 14091 flow [2023-01-27 20:12:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 20:12:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 20:12:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5570 transitions. [2023-01-27 20:12:24,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511094301563288 [2023-01-27 20:12:24,726 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5570 transitions. [2023-01-27 20:12:24,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5570 transitions. [2023-01-27 20:12:24,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:24,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5570 transitions. [2023-01-27 20:12:24,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 232.08333333333334) internal successors, (5570), 24 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:24,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 661.0) internal successors, (16525), 25 states have internal predecessors, (16525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:24,747 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 661.0) internal successors, (16525), 25 states have internal predecessors, (16525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:24,747 INFO L175 Difference]: Start difference. First operand has 222 places, 631 transitions, 10345 flow. Second operand 24 states and 5570 transitions. [2023-01-27 20:12:24,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 831 transitions, 14091 flow [2023-01-27 20:12:26,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 831 transitions, 13567 flow, removed 18 selfloop flow, removed 13 redundant places. [2023-01-27 20:12:26,356 INFO L231 Difference]: Finished difference. Result has 233 places, 633 transitions, 10776 flow [2023-01-27 20:12:26,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=9840, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10776, PETRI_PLACES=233, PETRI_TRANSITIONS=633} [2023-01-27 20:12:26,356 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 199 predicate places. [2023-01-27 20:12:26,356 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 633 transitions, 10776 flow [2023-01-27 20:12:26,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 224.2) internal successors, (6726), 30 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:26,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:26,357 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:26,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:26,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-27 20:12:26,559 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:12:26,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1373405120, now seen corresponding path program 6 times [2023-01-27 20:12:26,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:26,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027897807] [2023-01-27 20:12:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:26,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:27,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:27,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027897807] [2023-01-27 20:12:27,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027897807] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:27,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758183094] [2023-01-27 20:12:27,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:12:27,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:27,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:27,769 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:27,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 20:12:27,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:12:27,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:27,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:27,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:28,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:28,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:28,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:28,723 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:12:28,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:12:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758183094] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:12:28,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:12:28,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 29 [2023-01-27 20:12:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890677635] [2023-01-27 20:12:28,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:12:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 20:12:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 20:12:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2023-01-27 20:12:28,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:12:28,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 633 transitions, 10776 flow. Second operand has 30 states, 30 states have (on average 224.26666666666668) internal successors, (6728), 30 states have internal predecessors, (6728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:28,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:28,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:12:28,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:32,904 INFO L130 PetriNetUnfolder]: 9544/13736 cut-off events. [2023-01-27 20:12:32,905 INFO L131 PetriNetUnfolder]: For 275225/275225 co-relation queries the response was YES. [2023-01-27 20:12:32,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114096 conditions, 13736 events. 9544/13736 cut-off events. For 275225/275225 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 77811 event pairs, 2092 based on Foata normal form. 2/13738 useless extension candidates. Maximal degree in co-relation 113943. Up to 6324 conditions per place. [2023-01-27 20:12:33,021 INFO L137 encePairwiseOnDemand]: 646/661 looper letters, 394 selfloop transitions, 406 changer transitions 7/807 dead transitions. [2023-01-27 20:12:33,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 807 transitions, 14328 flow [2023-01-27 20:12:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 20:12:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 20:12:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4190 transitions. [2023-01-27 20:12:33,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35216002689527653 [2023-01-27 20:12:33,027 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4190 transitions. [2023-01-27 20:12:33,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4190 transitions. [2023-01-27 20:12:33,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:33,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4190 transitions. [2023-01-27 20:12:33,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 232.77777777777777) internal successors, (4190), 18 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:33,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 661.0) internal successors, (12559), 19 states have internal predecessors, (12559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:33,041 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 661.0) internal successors, (12559), 19 states have internal predecessors, (12559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:33,041 INFO L175 Difference]: Start difference. First operand has 233 places, 633 transitions, 10776 flow. Second operand 18 states and 4190 transitions. [2023-01-27 20:12:33,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 807 transitions, 14328 flow [2023-01-27 20:12:34,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 807 transitions, 13516 flow, removed 1 selfloop flow, removed 21 redundant places. [2023-01-27 20:12:34,843 INFO L231 Difference]: Finished difference. Result has 232 places, 643 transitions, 11018 flow [2023-01-27 20:12:34,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=9967, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11018, PETRI_PLACES=232, PETRI_TRANSITIONS=643} [2023-01-27 20:12:34,844 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 198 predicate places. [2023-01-27 20:12:34,844 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 643 transitions, 11018 flow [2023-01-27 20:12:34,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 224.26666666666668) internal successors, (6728), 30 states have internal predecessors, (6728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:34,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:34,845 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:34,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-27 20:12:35,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:35,046 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:12:35,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1841694086, now seen corresponding path program 7 times [2023-01-27 20:12:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189478010] [2023-01-27 20:12:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:35,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:36,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:36,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189478010] [2023-01-27 20:12:36,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189478010] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:36,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553541178] [2023-01-27 20:12:36,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:12:36,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:36,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:36,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-27 20:12:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:36,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:36,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:36,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:36,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:36,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:37,072 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:12:37,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:12:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:37,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553541178] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:12:37,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:12:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 28 [2023-01-27 20:12:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121589447] [2023-01-27 20:12:37,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:12:37,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 20:12:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 20:12:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:12:37,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:12:37,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 643 transitions, 11018 flow. Second operand has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:37,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:37,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:12:37,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:41,427 INFO L130 PetriNetUnfolder]: 9700/13961 cut-off events. [2023-01-27 20:12:41,427 INFO L131 PetriNetUnfolder]: For 303723/303723 co-relation queries the response was YES. [2023-01-27 20:12:41,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118679 conditions, 13961 events. 9700/13961 cut-off events. For 303723/303723 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 79327 event pairs, 1961 based on Foata normal form. 1/13962 useless extension candidates. Maximal degree in co-relation 118523. Up to 6026 conditions per place. [2023-01-27 20:12:41,551 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 381 selfloop transitions, 450 changer transitions 4/835 dead transitions. [2023-01-27 20:12:41,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 835 transitions, 14806 flow [2023-01-27 20:12:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:12:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:12:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5108 transitions. [2023-01-27 20:12:41,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125842387567047 [2023-01-27 20:12:41,559 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5108 transitions. [2023-01-27 20:12:41,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5108 transitions. [2023-01-27 20:12:41,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:41,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5108 transitions. [2023-01-27 20:12:41,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 232.1818181818182) internal successors, (5108), 22 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:41,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 661.0) internal successors, (15203), 23 states have internal predecessors, (15203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:41,574 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 661.0) internal successors, (15203), 23 states have internal predecessors, (15203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:41,574 INFO L175 Difference]: Start difference. First operand has 232 places, 643 transitions, 11018 flow. Second operand 22 states and 5108 transitions. [2023-01-27 20:12:41,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 835 transitions, 14806 flow [2023-01-27 20:12:43,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 835 transitions, 14108 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-01-27 20:12:43,624 INFO L231 Difference]: Finished difference. Result has 242 places, 649 transitions, 11357 flow [2023-01-27 20:12:43,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=10324, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11357, PETRI_PLACES=242, PETRI_TRANSITIONS=649} [2023-01-27 20:12:43,625 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 208 predicate places. [2023-01-27 20:12:43,625 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 649 transitions, 11357 flow [2023-01-27 20:12:43,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:43,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:43,626 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:43,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:43,832 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:12:43,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash 88049456, now seen corresponding path program 8 times [2023-01-27 20:12:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653444610] [2023-01-27 20:12:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:44,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653444610] [2023-01-27 20:12:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653444610] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590894048] [2023-01-27 20:12:44,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:12:44,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:44,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:44,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-27 20:12:45,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:12:45,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:45,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:45,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:45,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:45,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:45,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:45,759 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:12:45,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:12:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590894048] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:12:45,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:12:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 28 [2023-01-27 20:12:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360712899] [2023-01-27 20:12:45,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:12:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 20:12:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:12:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 20:12:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:12:45,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:12:45,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 649 transitions, 11357 flow. Second operand has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:45,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:12:45,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:12:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:12:50,601 INFO L130 PetriNetUnfolder]: 10636/15302 cut-off events. [2023-01-27 20:12:50,601 INFO L131 PetriNetUnfolder]: For 355221/355221 co-relation queries the response was YES. [2023-01-27 20:12:50,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132720 conditions, 15302 events. 10636/15302 cut-off events. For 355221/355221 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 88386 event pairs, 2110 based on Foata normal form. 1/15303 useless extension candidates. Maximal degree in co-relation 132562. Up to 6176 conditions per place. [2023-01-27 20:12:50,742 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 387 selfloop transitions, 485 changer transitions 10/882 dead transitions. [2023-01-27 20:12:50,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 882 transitions, 16005 flow [2023-01-27 20:12:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:12:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:12:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5116 transitions. [2023-01-27 20:12:50,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518085545317013 [2023-01-27 20:12:50,747 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5116 transitions. [2023-01-27 20:12:50,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5116 transitions. [2023-01-27 20:12:50,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:12:50,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5116 transitions. [2023-01-27 20:12:50,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 232.54545454545453) internal successors, (5116), 22 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:50,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 661.0) internal successors, (15203), 23 states have internal predecessors, (15203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:50,764 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 661.0) internal successors, (15203), 23 states have internal predecessors, (15203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:50,764 INFO L175 Difference]: Start difference. First operand has 242 places, 649 transitions, 11357 flow. Second operand 22 states and 5116 transitions. [2023-01-27 20:12:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 882 transitions, 16005 flow [2023-01-27 20:12:53,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 882 transitions, 15346 flow, removed 18 selfloop flow, removed 15 redundant places. [2023-01-27 20:12:53,011 INFO L231 Difference]: Finished difference. Result has 255 places, 693 transitions, 12660 flow [2023-01-27 20:12:53,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=10712, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12660, PETRI_PLACES=255, PETRI_TRANSITIONS=693} [2023-01-27 20:12:53,012 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 221 predicate places. [2023-01-27 20:12:53,012 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 693 transitions, 12660 flow [2023-01-27 20:12:53,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:12:53,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:12:53,013 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:12:53,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-27 20:12:53,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-01-27 20:12:53,224 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:12:53,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:12:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2022146210, now seen corresponding path program 9 times [2023-01-27 20:12:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:12:53,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983031652] [2023-01-27 20:12:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:12:53,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:12:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:12:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:12:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983031652] [2023-01-27 20:12:54,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983031652] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:12:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896156846] [2023-01-27 20:12:54,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:12:54,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:12:54,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:12:54,239 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:12:54,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-27 20:12:54,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:12:54,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:12:54,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:12:54,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:12:54,757 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:12:54,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:12:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:12:54,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:12:55,330 INFO L321 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2023-01-27 20:12:55,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 212 [2023-01-27 20:13:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:04,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896156846] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:13:04,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:13:04,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 34 [2023-01-27 20:13:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335382864] [2023-01-27 20:13:04,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:13:04,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-27 20:13:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:13:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-27 20:13:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2023-01-27 20:13:04,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:13:04,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 693 transitions, 12660 flow. Second operand has 35 states, 35 states have (on average 224.17142857142858) internal successors, (7846), 35 states have internal predecessors, (7846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:04,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:13:04,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:13:04,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:13:13,093 INFO L130 PetriNetUnfolder]: 15889/22824 cut-off events. [2023-01-27 20:13:13,094 INFO L131 PetriNetUnfolder]: For 625947/625947 co-relation queries the response was YES. [2023-01-27 20:13:13,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207122 conditions, 22824 events. 15889/22824 cut-off events. For 625947/625947 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 139499 event pairs, 2274 based on Foata normal form. 1/22825 useless extension candidates. Maximal degree in co-relation 206957. Up to 11312 conditions per place. [2023-01-27 20:13:13,352 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 502 selfloop transitions, 737 changer transitions 104/1343 dead transitions. [2023-01-27 20:13:13,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1343 transitions, 24846 flow [2023-01-27 20:13:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-01-27 20:13:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-01-27 20:13:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 9511 transitions. [2023-01-27 20:13:13,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35094645954023834 [2023-01-27 20:13:13,360 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 9511 transitions. [2023-01-27 20:13:13,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 9511 transitions. [2023-01-27 20:13:13,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:13:13,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 9511 transitions. [2023-01-27 20:13:13,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 231.97560975609755) internal successors, (9511), 41 states have internal predecessors, (9511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:13,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 661.0) internal successors, (27762), 42 states have internal predecessors, (27762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:13,389 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 661.0) internal successors, (27762), 42 states have internal predecessors, (27762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:13,389 INFO L175 Difference]: Start difference. First operand has 255 places, 693 transitions, 12660 flow. Second operand 41 states and 9511 transitions. [2023-01-27 20:13:13,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1343 transitions, 24846 flow [2023-01-27 20:13:18,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1343 transitions, 24120 flow, removed 93 selfloop flow, removed 11 redundant places. [2023-01-27 20:13:18,559 INFO L231 Difference]: Finished difference. Result has 312 places, 986 transitions, 19927 flow [2023-01-27 20:13:18,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=12080, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=19927, PETRI_PLACES=312, PETRI_TRANSITIONS=986} [2023-01-27 20:13:18,560 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 278 predicate places. [2023-01-27 20:13:18,560 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 986 transitions, 19927 flow [2023-01-27 20:13:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 224.17142857142858) internal successors, (7846), 35 states have internal predecessors, (7846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:18,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:13:18,562 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:13:18,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-27 20:13:18,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:18,762 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:13:18,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:13:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1152200182, now seen corresponding path program 10 times [2023-01-27 20:13:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:13:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116079041] [2023-01-27 20:13:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:13:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:13:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:13:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:19,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:13:19,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116079041] [2023-01-27 20:13:19,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116079041] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:13:19,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003460445] [2023-01-27 20:13:19,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:13:19,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:19,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:13:19,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:13:19,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-27 20:13:20,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:13:20,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:13:20,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:13:20,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:13:20,534 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:13:20,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:13:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:20,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:13:21,054 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:13:21,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:13:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:21,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003460445] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:13:21,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:13:21,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 31 [2023-01-27 20:13:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152111025] [2023-01-27 20:13:21,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:13:21,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 20:13:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:13:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 20:13:21,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-01-27 20:13:21,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:13:21,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 986 transitions, 19927 flow. Second operand has 32 states, 32 states have (on average 224.34375) internal successors, (7179), 32 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:21,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:13:21,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:13:21,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:13:28,715 INFO L130 PetriNetUnfolder]: 14237/20718 cut-off events. [2023-01-27 20:13:28,715 INFO L131 PetriNetUnfolder]: For 1305159/1305159 co-relation queries the response was YES. [2023-01-27 20:13:28,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233153 conditions, 20718 events. 14237/20718 cut-off events. For 1305159/1305159 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 128836 event pairs, 2620 based on Foata normal form. 1/20719 useless extension candidates. Maximal degree in co-relation 232960. Up to 8048 conditions per place. [2023-01-27 20:13:29,001 INFO L137 encePairwiseOnDemand]: 645/661 looper letters, 571 selfloop transitions, 651 changer transitions 15/1237 dead transitions. [2023-01-27 20:13:29,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1237 transitions, 26183 flow [2023-01-27 20:13:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-27 20:13:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-27 20:13:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5804 transitions. [2023-01-27 20:13:29,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35122541603630864 [2023-01-27 20:13:29,005 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5804 transitions. [2023-01-27 20:13:29,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5804 transitions. [2023-01-27 20:13:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:13:29,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5804 transitions. [2023-01-27 20:13:29,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 232.16) internal successors, (5804), 25 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:29,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 661.0) internal successors, (17186), 26 states have internal predecessors, (17186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:29,023 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 661.0) internal successors, (17186), 26 states have internal predecessors, (17186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:29,024 INFO L175 Difference]: Start difference. First operand has 312 places, 986 transitions, 19927 flow. Second operand 25 states and 5804 transitions. [2023-01-27 20:13:29,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1237 transitions, 26183 flow [2023-01-27 20:13:38,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1237 transitions, 24561 flow, removed 721 selfloop flow, removed 7 redundant places. [2023-01-27 20:13:38,529 INFO L231 Difference]: Finished difference. Result has 335 places, 1018 transitions, 20982 flow [2023-01-27 20:13:38,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=18659, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=622, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=20982, PETRI_PLACES=335, PETRI_TRANSITIONS=1018} [2023-01-27 20:13:38,530 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 301 predicate places. [2023-01-27 20:13:38,530 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 1018 transitions, 20982 flow [2023-01-27 20:13:38,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.34375) internal successors, (7179), 32 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:38,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:13:38,531 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:13:38,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-27 20:13:38,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:38,733 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:13:38,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:13:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -200624508, now seen corresponding path program 11 times [2023-01-27 20:13:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:13:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570540040] [2023-01-27 20:13:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:13:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:13:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:13:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:13:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570540040] [2023-01-27 20:13:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570540040] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:13:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468672967] [2023-01-27 20:13:39,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:13:39,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:13:39,633 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:13:39,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-27 20:13:39,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:13:39,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:13:39,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:13:39,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:13:40,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:13:40,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:13:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:40,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:13:40,552 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:13:40,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:13:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:40,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468672967] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:13:40,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:13:40,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 28 [2023-01-27 20:13:40,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510921845] [2023-01-27 20:13:40,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:13:40,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 20:13:40,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:13:40,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 20:13:40,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:13:40,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:13:40,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1018 transitions, 20982 flow. Second operand has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:40,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:13:40,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:13:40,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:13:48,273 INFO L130 PetriNetUnfolder]: 14235/20721 cut-off events. [2023-01-27 20:13:48,273 INFO L131 PetriNetUnfolder]: For 1367761/1367761 co-relation queries the response was YES. [2023-01-27 20:13:48,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231070 conditions, 20721 events. 14235/20721 cut-off events. For 1367761/1367761 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 128859 event pairs, 2780 based on Foata normal form. 1/20722 useless extension candidates. Maximal degree in co-relation 230870. Up to 8347 conditions per place. [2023-01-27 20:13:48,563 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 604 selfloop transitions, 612 changer transitions 1/1217 dead transitions. [2023-01-27 20:13:48,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1217 transitions, 25977 flow [2023-01-27 20:13:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 20:13:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 20:13:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5105 transitions. [2023-01-27 20:13:48,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510521248796589 [2023-01-27 20:13:48,568 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5105 transitions. [2023-01-27 20:13:48,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5105 transitions. [2023-01-27 20:13:48,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:13:48,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5105 transitions. [2023-01-27 20:13:48,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 232.04545454545453) internal successors, (5105), 22 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:48,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 661.0) internal successors, (15203), 23 states have internal predecessors, (15203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:48,583 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 661.0) internal successors, (15203), 23 states have internal predecessors, (15203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:48,583 INFO L175 Difference]: Start difference. First operand has 335 places, 1018 transitions, 20982 flow. Second operand 22 states and 5105 transitions. [2023-01-27 20:13:48,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1217 transitions, 25977 flow [2023-01-27 20:13:56,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1217 transitions, 24942 flow, removed 104 selfloop flow, removed 11 redundant places. [2023-01-27 20:13:56,077 INFO L231 Difference]: Finished difference. Result has 347 places, 1022 transitions, 21310 flow [2023-01-27 20:13:56,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=19976, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1018, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=608, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=21310, PETRI_PLACES=347, PETRI_TRANSITIONS=1022} [2023-01-27 20:13:56,078 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 313 predicate places. [2023-01-27 20:13:56,078 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 1022 transitions, 21310 flow [2023-01-27 20:13:56,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:56,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:13:56,080 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:13:56,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-27 20:13:56,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-27 20:13:56,287 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:13:56,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:13:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1811565466, now seen corresponding path program 12 times [2023-01-27 20:13:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:13:56,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743642519] [2023-01-27 20:13:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:13:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:13:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:13:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:57,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:13:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743642519] [2023-01-27 20:13:57,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743642519] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:13:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683248080] [2023-01-27 20:13:57,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:13:57,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:13:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:13:57,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:13:57,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-27 20:13:57,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:13:57,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:13:57,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:13:57,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:13:57,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:13:57,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:13:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:57,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:13:58,223 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:13:58,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:13:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:13:58,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683248080] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:13:58,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:13:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 28 [2023-01-27 20:13:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817406494] [2023-01-27 20:13:58,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:13:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-27 20:13:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:13:58,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-27 20:13:58,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-01-27 20:13:58,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:13:58,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 1022 transitions, 21310 flow. Second operand has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:13:58,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:13:58,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:13:58,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:06,028 INFO L130 PetriNetUnfolder]: 14353/20892 cut-off events. [2023-01-27 20:14:06,029 INFO L131 PetriNetUnfolder]: For 1365519/1365519 co-relation queries the response was YES. [2023-01-27 20:14:06,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232730 conditions, 20892 events. 14353/20892 cut-off events. For 1365519/1365519 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 130072 event pairs, 3020 based on Foata normal form. 1/20893 useless extension candidates. Maximal degree in co-relation 232528. Up to 8765 conditions per place. [2023-01-27 20:14:06,370 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 634 selfloop transitions, 557 changer transitions 1/1192 dead transitions. [2023-01-27 20:14:06,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1192 transitions, 25885 flow [2023-01-27 20:14:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 20:14:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 20:14:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4182 transitions. [2023-01-27 20:14:06,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35148764498234997 [2023-01-27 20:14:06,375 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4182 transitions. [2023-01-27 20:14:06,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4182 transitions. [2023-01-27 20:14:06,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:06,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4182 transitions. [2023-01-27 20:14:06,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:06,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 661.0) internal successors, (12559), 19 states have internal predecessors, (12559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:06,386 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 661.0) internal successors, (12559), 19 states have internal predecessors, (12559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:06,387 INFO L175 Difference]: Start difference. First operand has 347 places, 1022 transitions, 21310 flow. Second operand 18 states and 4182 transitions. [2023-01-27 20:14:06,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1192 transitions, 25885 flow [2023-01-27 20:14:13,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1192 transitions, 24892 flow, removed 17 selfloop flow, removed 15 redundant places. [2023-01-27 20:14:13,836 INFO L231 Difference]: Finished difference. Result has 351 places, 1027 transitions, 21579 flow [2023-01-27 20:14:13,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=20318, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21579, PETRI_PLACES=351, PETRI_TRANSITIONS=1027} [2023-01-27 20:14:13,837 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 317 predicate places. [2023-01-27 20:14:13,837 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 1027 transitions, 21579 flow [2023-01-27 20:14:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 224.24137931034483) internal successors, (6503), 29 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:13,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:13,838 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:13,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-27 20:14:14,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:14,039 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:14,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2143579886, now seen corresponding path program 13 times [2023-01-27 20:14:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721734791] [2023-01-27 20:14:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:14,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:14,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721734791] [2023-01-27 20:14:14,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721734791] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:14:14,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814387699] [2023-01-27 20:14:14,943 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:14:14,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:14,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:14:14,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:14:14,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-27 20:14:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:15,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:14:15,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:14:15,441 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:14:15,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:14:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:15,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:14:15,939 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:14:15,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:14:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:16,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814387699] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:14:16,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:14:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 31 [2023-01-27 20:14:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54534170] [2023-01-27 20:14:16,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:14:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 20:14:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 20:14:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2023-01-27 20:14:16,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:14:16,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 1027 transitions, 21579 flow. Second operand has 32 states, 32 states have (on average 224.28125) internal successors, (7177), 32 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:16,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:16,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:14:16,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:24,762 INFO L130 PetriNetUnfolder]: 14386/20952 cut-off events. [2023-01-27 20:14:24,762 INFO L131 PetriNetUnfolder]: For 1375809/1375809 co-relation queries the response was YES. [2023-01-27 20:14:24,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233924 conditions, 20952 events. 14386/20952 cut-off events. For 1375809/1375809 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 130551 event pairs, 2818 based on Foata normal form. 1/20953 useless extension candidates. Maximal degree in co-relation 233720. Up to 8060 conditions per place. [2023-01-27 20:14:25,097 INFO L137 encePairwiseOnDemand]: 645/661 looper letters, 575 selfloop transitions, 656 changer transitions 1/1232 dead transitions. [2023-01-27 20:14:25,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1232 transitions, 26532 flow [2023-01-27 20:14:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 20:14:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 20:14:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6026 transitions. [2023-01-27 20:14:25,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35063423716978936 [2023-01-27 20:14:25,102 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6026 transitions. [2023-01-27 20:14:25,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6026 transitions. [2023-01-27 20:14:25,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:25,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6026 transitions. [2023-01-27 20:14:25,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 231.76923076923077) internal successors, (6026), 26 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 661.0) internal successors, (17847), 27 states have internal predecessors, (17847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,118 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 661.0) internal successors, (17847), 27 states have internal predecessors, (17847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:25,118 INFO L175 Difference]: Start difference. First operand has 351 places, 1027 transitions, 21579 flow. Second operand 26 states and 6026 transitions. [2023-01-27 20:14:25,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1232 transitions, 26532 flow [2023-01-27 20:14:32,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1232 transitions, 25591 flow, removed 34 selfloop flow, removed 11 redundant places. [2023-01-27 20:14:32,657 INFO L231 Difference]: Finished difference. Result has 366 places, 1029 transitions, 22013 flow [2023-01-27 20:14:32,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=20639, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=654, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=22013, PETRI_PLACES=366, PETRI_TRANSITIONS=1029} [2023-01-27 20:14:32,658 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 332 predicate places. [2023-01-27 20:14:32,659 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 1029 transitions, 22013 flow [2023-01-27 20:14:32,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.28125) internal successors, (7177), 32 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:32,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:32,660 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:32,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-27 20:14:32,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:32,870 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:32,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash 512198078, now seen corresponding path program 14 times [2023-01-27 20:14:32,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:32,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469624555] [2023-01-27 20:14:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:32,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:33,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:33,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469624555] [2023-01-27 20:14:33,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469624555] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:14:33,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902237944] [2023-01-27 20:14:33,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:14:33,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:14:33,701 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:14:33,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-27 20:14:33,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:14:33,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:14:33,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:14:33,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:14:34,255 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:14:34,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:14:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:34,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:14:34,700 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:14:34,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:14:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902237944] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:14:34,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:14:34,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 30 [2023-01-27 20:14:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672066216] [2023-01-27 20:14:34,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:14:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 20:14:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 20:14:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2023-01-27 20:14:34,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:14:34,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1029 transitions, 22013 flow. Second operand has 31 states, 31 states have (on average 224.2258064516129) internal successors, (6951), 31 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:34,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:34,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:14:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:14:43,513 INFO L130 PetriNetUnfolder]: 14812/21565 cut-off events. [2023-01-27 20:14:43,514 INFO L131 PetriNetUnfolder]: For 1464180/1464180 co-relation queries the response was YES. [2023-01-27 20:14:43,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244650 conditions, 21565 events. 14812/21565 cut-off events. For 1464180/1464180 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 134805 event pairs, 2164 based on Foata normal form. 1/21566 useless extension candidates. Maximal degree in co-relation 244445. Up to 7558 conditions per place. [2023-01-27 20:14:43,794 INFO L137 encePairwiseOnDemand]: 647/661 looper letters, 545 selfloop transitions, 735 changer transitions 31/1311 dead transitions. [2023-01-27 20:14:43,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1311 transitions, 29088 flow [2023-01-27 20:14:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-27 20:14:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-27 20:14:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7418 transitions. [2023-01-27 20:14:43,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35069969742813917 [2023-01-27 20:14:43,799 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7418 transitions. [2023-01-27 20:14:43,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7418 transitions. [2023-01-27 20:14:43,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:14:43,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7418 transitions. [2023-01-27 20:14:43,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 231.8125) internal successors, (7418), 32 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:43,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 661.0) internal successors, (21813), 33 states have internal predecessors, (21813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:43,817 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 661.0) internal successors, (21813), 33 states have internal predecessors, (21813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:43,817 INFO L175 Difference]: Start difference. First operand has 366 places, 1029 transitions, 22013 flow. Second operand 32 states and 7418 transitions. [2023-01-27 20:14:43,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1311 transitions, 29088 flow [2023-01-27 20:14:51,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1311 transitions, 28119 flow, removed 9 selfloop flow, removed 19 redundant places. [2023-01-27 20:14:51,072 INFO L231 Difference]: Finished difference. Result has 388 places, 1056 transitions, 23394 flow [2023-01-27 20:14:51,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=21065, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=23394, PETRI_PLACES=388, PETRI_TRANSITIONS=1056} [2023-01-27 20:14:51,073 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 354 predicate places. [2023-01-27 20:14:51,073 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 1056 transitions, 23394 flow [2023-01-27 20:14:51,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 224.2258064516129) internal successors, (6951), 31 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:51,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:14:51,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:14:51,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-27 20:14:51,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:51,275 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:14:51,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:14:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash -114577488, now seen corresponding path program 15 times [2023-01-27 20:14:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:14:51,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634961734] [2023-01-27 20:14:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:14:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:14:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:14:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:52,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:14:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634961734] [2023-01-27 20:14:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634961734] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:14:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157626678] [2023-01-27 20:14:52,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:14:52,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:14:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:14:52,173 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:14:52,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-27 20:14:52,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 20:14:52,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:14:52,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:14:52,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:14:52,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:14:52,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:14:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:52,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:14:53,105 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:14:53,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:14:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:14:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157626678] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:14:53,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:14:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 31 [2023-01-27 20:14:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853802417] [2023-01-27 20:14:53,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:14:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 20:14:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:14:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 20:14:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2023-01-27 20:14:53,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:14:53,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1056 transitions, 23394 flow. Second operand has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:14:53,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:14:53,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:14:53,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:03,511 INFO L130 PetriNetUnfolder]: 16930/24652 cut-off events. [2023-01-27 20:15:03,511 INFO L131 PetriNetUnfolder]: For 2148876/2148876 co-relation queries the response was YES. [2023-01-27 20:15:03,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296665 conditions, 24652 events. 16930/24652 cut-off events. For 2148876/2148876 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 157169 event pairs, 3749 based on Foata normal form. 2/24654 useless extension candidates. Maximal degree in co-relation 296450. Up to 16740 conditions per place. [2023-01-27 20:15:04,030 INFO L137 encePairwiseOnDemand]: 646/661 looper letters, 769 selfloop transitions, 614 changer transitions 2/1385 dead transitions. [2023-01-27 20:15:04,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 1385 transitions, 32958 flow [2023-01-27 20:15:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 20:15:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 20:15:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5340 transitions. [2023-01-27 20:15:04,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512464645135828 [2023-01-27 20:15:04,034 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5340 transitions. [2023-01-27 20:15:04,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5340 transitions. [2023-01-27 20:15:04,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:04,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5340 transitions. [2023-01-27 20:15:04,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 232.17391304347825) internal successors, (5340), 23 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:04,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 661.0) internal successors, (15864), 24 states have internal predecessors, (15864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:04,043 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 661.0) internal successors, (15864), 24 states have internal predecessors, (15864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:04,043 INFO L175 Difference]: Start difference. First operand has 388 places, 1056 transitions, 23394 flow. Second operand 23 states and 5340 transitions. [2023-01-27 20:15:04,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 1385 transitions, 32958 flow [2023-01-27 20:15:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1385 transitions, 31570 flow, removed 180 selfloop flow, removed 24 redundant places. [2023-01-27 20:15:14,848 INFO L231 Difference]: Finished difference. Result has 394 places, 1185 transitions, 27133 flow [2023-01-27 20:15:14,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=22242, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=27133, PETRI_PLACES=394, PETRI_TRANSITIONS=1185} [2023-01-27 20:15:14,850 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 360 predicate places. [2023-01-27 20:15:14,850 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1185 transitions, 27133 flow [2023-01-27 20:15:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.25) internal successors, (7176), 32 states have internal predecessors, (7176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:14,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:14,851 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:14,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-27 20:15:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-27 20:15:15,054 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:15:15,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:15:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1117117038, now seen corresponding path program 16 times [2023-01-27 20:15:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:15:15,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447794415] [2023-01-27 20:15:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:15:15,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:15:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:15:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:15:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:15:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447794415] [2023-01-27 20:15:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447794415] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:15:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313580792] [2023-01-27 20:15:16,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:15:16,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:15:16,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:15:16,061 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:15:16,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-27 20:15:16,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:15:16,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:15:16,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-27 20:15:16,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:15:16,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:15:16,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:15:16,705 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:15:16,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-27 20:15:16,900 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:15:16,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:15:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:15:16,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:15:17,473 INFO L321 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-01-27 20:15:17,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 213 [2023-01-27 20:15:17,498 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:15:17,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 115 [2023-01-27 20:15:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:15:18,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313580792] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:15:18,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:15:18,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 13] total 42 [2023-01-27 20:15:18,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665625697] [2023-01-27 20:15:18,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:15:18,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-01-27 20:15:18,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:15:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-01-27 20:15:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1687, Unknown=27, NotChecked=0, Total=1892 [2023-01-27 20:15:18,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 661 [2023-01-27 20:15:18,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1185 transitions, 27133 flow. Second operand has 44 states, 44 states have (on average 213.88636363636363) internal successors, (9411), 44 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:18,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:15:18,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 661 [2023-01-27 20:15:18,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:15:31,411 WARN L222 SmtUtils]: Spent 12.51s on a formula simplification. DAG size of input: 119 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:15:43,833 INFO L130 PetriNetUnfolder]: 19526/28482 cut-off events. [2023-01-27 20:15:43,833 INFO L131 PetriNetUnfolder]: For 2306874/2306874 co-relation queries the response was YES. [2023-01-27 20:15:44,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341984 conditions, 28482 events. 19526/28482 cut-off events. For 2306874/2306874 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 185986 event pairs, 2582 based on Foata normal form. 1/28483 useless extension candidates. Maximal degree in co-relation 341767. Up to 10829 conditions per place. [2023-01-27 20:15:44,347 INFO L137 encePairwiseOnDemand]: 646/661 looper letters, 734 selfloop transitions, 898 changer transitions 2/1634 dead transitions. [2023-01-27 20:15:44,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 1634 transitions, 38435 flow [2023-01-27 20:15:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-27 20:15:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-27 20:15:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6426 transitions. [2023-01-27 20:15:44,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33522875476029007 [2023-01-27 20:15:44,351 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6426 transitions. [2023-01-27 20:15:44,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6426 transitions. [2023-01-27 20:15:44,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:15:44,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6426 transitions. [2023-01-27 20:15:44,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 221.58620689655172) internal successors, (6426), 29 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:44,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 661.0) internal successors, (19830), 30 states have internal predecessors, (19830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:44,369 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 661.0) internal successors, (19830), 30 states have internal predecessors, (19830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:44,369 INFO L175 Difference]: Start difference. First operand has 394 places, 1185 transitions, 27133 flow. Second operand 29 states and 6426 transitions. [2023-01-27 20:15:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 1634 transitions, 38435 flow [2023-01-27 20:15:59,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1634 transitions, 37892 flow, removed 112 selfloop flow, removed 10 redundant places. [2023-01-27 20:15:59,964 INFO L231 Difference]: Finished difference. Result has 420 places, 1361 transitions, 33356 flow [2023-01-27 20:15:59,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=26590, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=726, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=33356, PETRI_PLACES=420, PETRI_TRANSITIONS=1361} [2023-01-27 20:15:59,965 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 386 predicate places. [2023-01-27 20:15:59,965 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1361 transitions, 33356 flow [2023-01-27 20:15:59,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 213.88636363636363) internal successors, (9411), 44 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:15:59,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:15:59,967 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:15:59,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-27 20:16:00,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-27 20:16:00,168 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:16:00,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:16:00,168 INFO L85 PathProgramCache]: Analyzing trace with hash -509182254, now seen corresponding path program 17 times [2023-01-27 20:16:00,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:16:00,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513048673] [2023-01-27 20:16:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:16:00,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:16:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:16:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:16:01,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:16:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513048673] [2023-01-27 20:16:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513048673] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:16:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550165938] [2023-01-27 20:16:01,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 20:16:01,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:16:01,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:16:01,862 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:16:01,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-27 20:16:02,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-27 20:16:02,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:16:02,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-27 20:16:02,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:16:02,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:16:02,801 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-27 20:16:02,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2023-01-27 20:16:02,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-01-27 20:16:02,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:16:02,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-01-27 20:16:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:16:02,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:16:03,641 INFO L321 Elim1Store]: treesize reduction 15, result has 87.6 percent of original size [2023-01-27 20:16:03,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 181 [2023-01-27 20:16:03,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:16:03,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2023-01-27 20:16:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:16:04,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550165938] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:16:04,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:16:04,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 12] total 44 [2023-01-27 20:16:04,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036443321] [2023-01-27 20:16:04,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:16:04,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-01-27 20:16:04,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:16:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-01-27 20:16:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1863, Unknown=34, NotChecked=0, Total=2070 [2023-01-27 20:16:04,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 661 [2023-01-27 20:16:04,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1361 transitions, 33356 flow. Second operand has 46 states, 46 states have (on average 190.7608695652174) internal successors, (8775), 46 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:16:04,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:16:04,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 661 [2023-01-27 20:16:04,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:16:32,577 WARN L222 SmtUtils]: Spent 28.14s on a formula simplification. DAG size of input: 111 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:17:03,079 WARN L222 SmtUtils]: Spent 17.79s on a formula simplification. DAG size of input: 96 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 20:17:13,787 INFO L130 PetriNetUnfolder]: 19886/29040 cut-off events. [2023-01-27 20:17:13,787 INFO L131 PetriNetUnfolder]: For 2484812/2484812 co-relation queries the response was YES. [2023-01-27 20:17:14,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360018 conditions, 29040 events. 19886/29040 cut-off events. For 2484812/2484812 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 190581 event pairs, 3729 based on Foata normal form. 5/29045 useless extension candidates. Maximal degree in co-relation 359792. Up to 12260 conditions per place. [2023-01-27 20:17:14,403 INFO L137 encePairwiseOnDemand]: 641/661 looper letters, 731 selfloop transitions, 870 changer transitions 4/1605 dead transitions. [2023-01-27 20:17:14,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1605 transitions, 40221 flow [2023-01-27 20:17:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-27 20:17:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-27 20:17:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5958 transitions. [2023-01-27 20:17:14,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3004538577912254 [2023-01-27 20:17:14,408 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5958 transitions. [2023-01-27 20:17:14,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5958 transitions. [2023-01-27 20:17:14,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:17:14,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5958 transitions. [2023-01-27 20:17:14,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 198.6) internal successors, (5958), 30 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:14,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 661.0) internal successors, (20491), 31 states have internal predecessors, (20491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:14,426 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 661.0) internal successors, (20491), 31 states have internal predecessors, (20491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:14,426 INFO L175 Difference]: Start difference. First operand has 420 places, 1361 transitions, 33356 flow. Second operand 30 states and 5958 transitions. [2023-01-27 20:17:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1605 transitions, 40221 flow [2023-01-27 20:17:32,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1605 transitions, 39768 flow, removed 69 selfloop flow, removed 9 redundant places. [2023-01-27 20:17:32,534 INFO L231 Difference]: Finished difference. Result has 444 places, 1377 transitions, 35471 flow [2023-01-27 20:17:32,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=32911, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=35471, PETRI_PLACES=444, PETRI_TRANSITIONS=1377} [2023-01-27 20:17:32,535 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 410 predicate places. [2023-01-27 20:17:32,535 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1377 transitions, 35471 flow [2023-01-27 20:17:32,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 190.7608695652174) internal successors, (8775), 46 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:32,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:17:32,536 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:17:32,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-27 20:17:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:17:32,747 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:17:32,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:17:32,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1541222210, now seen corresponding path program 18 times [2023-01-27 20:17:32,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:17:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381688304] [2023-01-27 20:17:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:17:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:17:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:17:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:17:34,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:17:34,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381688304] [2023-01-27 20:17:34,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381688304] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:17:34,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611924316] [2023-01-27 20:17:34,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 20:17:34,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:17:34,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:17:34,081 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:17:34,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-27 20:17:34,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 20:17:34,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:17:34,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 67 conjunts are in the unsatisfiable core [2023-01-27 20:17:34,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:17:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:17:34,575 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-01-27 20:17:34,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-01-27 20:17:34,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:17:34,658 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-01-27 20:17:34,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-01-27 20:17:35,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:17:35,289 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:17:35,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-27 20:17:35,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:17:35,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:17:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:17:35,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:17:36,265 INFO L321 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-01-27 20:17:36,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 213 [2023-01-27 20:17:36,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:17:36,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 115 [2023-01-27 20:17:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:17:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611924316] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:17:39,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:17:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 13] total 43 [2023-01-27 20:17:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538448828] [2023-01-27 20:17:39,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:17:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-01-27 20:17:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:17:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-01-27 20:17:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1796, Unknown=5, NotChecked=0, Total=1980 [2023-01-27 20:17:39,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 661 [2023-01-27 20:17:39,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1377 transitions, 35471 flow. Second operand has 45 states, 45 states have (on average 207.86666666666667) internal successors, (9354), 45 states have internal predecessors, (9354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:17:39,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:17:39,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 661 [2023-01-27 20:17:39,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:18:17,890 INFO L130 PetriNetUnfolder]: 30275/43810 cut-off events. [2023-01-27 20:18:17,890 INFO L131 PetriNetUnfolder]: For 4183722/4183722 co-relation queries the response was YES. [2023-01-27 20:18:18,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570696 conditions, 43810 events. 30275/43810 cut-off events. For 4183722/4183722 co-relation queries the response was YES. Maximal size of possible extension queue 2514. Compared 301026 event pairs, 3361 based on Foata normal form. 3/43813 useless extension candidates. Maximal degree in co-relation 570457. Up to 12079 conditions per place. [2023-01-27 20:18:18,996 INFO L137 encePairwiseOnDemand]: 643/661 looper letters, 1144 selfloop transitions, 2545 changer transitions 3/3692 dead transitions. [2023-01-27 20:18:18,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 3692 transitions, 95978 flow [2023-01-27 20:18:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-01-27 20:18:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-01-27 20:18:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 15194 transitions. [2023-01-27 20:18:19,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3237518910741301 [2023-01-27 20:18:19,004 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 15194 transitions. [2023-01-27 20:18:19,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 15194 transitions. [2023-01-27 20:18:19,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:18:19,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 15194 transitions. [2023-01-27 20:18:19,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 214.0) internal successors, (15194), 71 states have internal predecessors, (15194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:19,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 661.0) internal successors, (47592), 72 states have internal predecessors, (47592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:19,054 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 661.0) internal successors, (47592), 72 states have internal predecessors, (47592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:19,055 INFO L175 Difference]: Start difference. First operand has 444 places, 1377 transitions, 35471 flow. Second operand 71 states and 15194 transitions. [2023-01-27 20:18:19,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 3692 transitions, 95978 flow [2023-01-27 20:18:56,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 3692 transitions, 94537 flow, removed 299 selfloop flow, removed 18 redundant places. [2023-01-27 20:18:56,857 INFO L231 Difference]: Finished difference. Result has 529 places, 3156 transitions, 87832 flow [2023-01-27 20:18:56,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=34823, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=998, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=87832, PETRI_PLACES=529, PETRI_TRANSITIONS=3156} [2023-01-27 20:18:56,858 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 495 predicate places. [2023-01-27 20:18:56,859 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 3156 transitions, 87832 flow [2023-01-27 20:18:56,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 207.86666666666667) internal successors, (9354), 45 states have internal predecessors, (9354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:56,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:18:56,860 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:18:56,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-27 20:18:57,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:18:57,063 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:18:57,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:18:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash -510515560, now seen corresponding path program 19 times [2023-01-27 20:18:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:18:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769155968] [2023-01-27 20:18:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:18:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:18:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:18:57,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:18:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769155968] [2023-01-27 20:18:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769155968] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:18:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314409110] [2023-01-27 20:18:57,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 20:18:57,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:18:57,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:18:57,905 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:18:57,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-27 20:18:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:18:58,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:18:58,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:18:58,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:18:58,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:18:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:18:58,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:18:58,913 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:18:58,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:18:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:18:59,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314409110] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:18:59,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:18:59,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 31 [2023-01-27 20:18:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368289942] [2023-01-27 20:18:59,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:18:59,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 20:18:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:18:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 20:18:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2023-01-27 20:18:59,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:18:59,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 3156 transitions, 87832 flow. Second operand has 32 states, 32 states have (on average 224.1875) internal successors, (7174), 32 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:18:59,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:18:59,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:18:59,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:19:27,415 INFO L130 PetriNetUnfolder]: 30547/44221 cut-off events. [2023-01-27 20:19:27,415 INFO L131 PetriNetUnfolder]: For 4663987/4663987 co-relation queries the response was YES. [2023-01-27 20:19:29,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629357 conditions, 44221 events. 30547/44221 cut-off events. For 4663987/4663987 co-relation queries the response was YES. Maximal size of possible extension queue 2556. Compared 304149 event pairs, 6172 based on Foata normal form. 3/44224 useless extension candidates. Maximal degree in co-relation 629090. Up to 36329 conditions per place. [2023-01-27 20:19:29,396 INFO L137 encePairwiseOnDemand]: 645/661 looper letters, 2110 selfloop transitions, 1252 changer transitions 2/3364 dead transitions. [2023-01-27 20:19:29,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 3364 transitions, 99136 flow [2023-01-27 20:19:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 20:19:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 20:19:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4862 transitions. [2023-01-27 20:19:29,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3502629493552338 [2023-01-27 20:19:29,399 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4862 transitions. [2023-01-27 20:19:29,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4862 transitions. [2023-01-27 20:19:29,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:19:29,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4862 transitions. [2023-01-27 20:19:29,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 231.52380952380952) internal successors, (4862), 21 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:29,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 661.0) internal successors, (14542), 22 states have internal predecessors, (14542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:29,408 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 661.0) internal successors, (14542), 22 states have internal predecessors, (14542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:19:29,408 INFO L175 Difference]: Start difference. First operand has 529 places, 3156 transitions, 87832 flow. Second operand 21 states and 4862 transitions. [2023-01-27 20:19:29,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 3364 transitions, 99136 flow [2023-01-27 20:20:30,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 3364 transitions, 95583 flow, removed 1600 selfloop flow, removed 12 redundant places. [2023-01-27 20:20:30,763 INFO L231 Difference]: Finished difference. Result has 540 places, 3192 transitions, 89156 flow [2023-01-27 20:20:30,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=84633, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=89156, PETRI_PLACES=540, PETRI_TRANSITIONS=3192} [2023-01-27 20:20:30,765 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 506 predicate places. [2023-01-27 20:20:30,765 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 3192 transitions, 89156 flow [2023-01-27 20:20:30,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.1875) internal successors, (7174), 32 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:30,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:20:30,766 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:20:30,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-27 20:20:30,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:20:30,972 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:20:30,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:20:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 865527998, now seen corresponding path program 20 times [2023-01-27 20:20:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:20:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137422828] [2023-01-27 20:20:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:20:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:20:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:20:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:20:31,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:20:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137422828] [2023-01-27 20:20:31,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137422828] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:20:31,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398678046] [2023-01-27 20:20:31,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:20:31,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:20:31,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:20:31,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:20:31,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-27 20:20:31,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:20:31,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:20:31,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:20:31,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:20:32,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:20:32,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:20:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:20:32,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:20:32,837 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:20:32,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:20:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:20:32,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398678046] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:20:32,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:20:32,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 35 [2023-01-27 20:20:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197055668] [2023-01-27 20:20:32,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:20:32,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-27 20:20:32,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:20:32,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-27 20:20:32,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2023-01-27 20:20:32,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:20:32,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 3192 transitions, 89156 flow. Second operand has 36 states, 36 states have (on average 224.11111111111111) internal successors, (8068), 36 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:20:32,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:20:32,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:20:32,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:04,192 INFO L130 PetriNetUnfolder]: 32126/46500 cut-off events. [2023-01-27 20:21:04,193 INFO L131 PetriNetUnfolder]: For 4850587/4850587 co-relation queries the response was YES. [2023-01-27 20:21:05,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652585 conditions, 46500 events. 32126/46500 cut-off events. For 4850587/4850587 co-relation queries the response was YES. Maximal size of possible extension queue 2703. Compared 322569 event pairs, 6398 based on Foata normal form. 1/46501 useless extension candidates. Maximal degree in co-relation 652320. Up to 38048 conditions per place. [2023-01-27 20:21:06,396 INFO L137 encePairwiseOnDemand]: 645/661 looper letters, 2240 selfloop transitions, 1292 changer transitions 1/3533 dead transitions. [2023-01-27 20:21:06,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 3533 transitions, 105247 flow [2023-01-27 20:21:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 20:21:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 20:21:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5313 transitions. [2023-01-27 20:21:06,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494704992435703 [2023-01-27 20:21:06,400 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5313 transitions. [2023-01-27 20:21:06,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5313 transitions. [2023-01-27 20:21:06,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:06,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5313 transitions. [2023-01-27 20:21:06,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 231.0) internal successors, (5313), 23 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 661.0) internal successors, (15864), 24 states have internal predecessors, (15864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:06,409 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 661.0) internal successors, (15864), 24 states have internal predecessors, (15864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:06,410 INFO L175 Difference]: Start difference. First operand has 540 places, 3192 transitions, 89156 flow. Second operand 23 states and 5313 transitions. [2023-01-27 20:21:06,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 3533 transitions, 105247 flow [2023-01-27 20:22:03,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 3533 transitions, 104637 flow, removed 117 selfloop flow, removed 12 redundant places. [2023-01-27 20:22:03,955 INFO L231 Difference]: Finished difference. Result has 554 places, 3327 transitions, 97032 flow [2023-01-27 20:22:03,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=88554, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=97032, PETRI_PLACES=554, PETRI_TRANSITIONS=3327} [2023-01-27 20:22:03,958 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 520 predicate places. [2023-01-27 20:22:03,958 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 3327 transitions, 97032 flow [2023-01-27 20:22:03,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 224.11111111111111) internal successors, (8068), 36 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:03,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:22:03,959 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:22:03,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-01-27 20:22:04,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-01-27 20:22:04,160 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:22:04,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:22:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash 206481308, now seen corresponding path program 21 times [2023-01-27 20:22:04,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:22:04,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219411104] [2023-01-27 20:22:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:22:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:22:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:22:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:22:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219411104] [2023-01-27 20:22:04,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219411104] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:22:04,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386574511] [2023-01-27 20:22:04,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:22:04,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:22:04,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:04,875 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:22:04,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-27 20:22:05,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 20:22:05,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:22:05,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-27 20:22:05,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:22:05,479 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:22:05,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:22:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:05,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:22:05,938 INFO L321 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-01-27 20:22:05,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-01-27 20:22:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:22:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386574511] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:22:06,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:22:06,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 31 [2023-01-27 20:22:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33638235] [2023-01-27 20:22:06,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:22:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 20:22:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:22:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 20:22:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-01-27 20:22:06,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 661 [2023-01-27 20:22:06,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 3327 transitions, 97032 flow. Second operand has 32 states, 32 states have (on average 224.1875) internal successors, (7174), 32 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:06,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:22:06,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 661 [2023-01-27 20:22:06,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:22:39,367 INFO L130 PetriNetUnfolder]: 32418/46926 cut-off events. [2023-01-27 20:22:39,367 INFO L131 PetriNetUnfolder]: For 5016989/5016989 co-relation queries the response was YES. [2023-01-27 20:22:41,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669159 conditions, 46926 events. 32418/46926 cut-off events. For 5016989/5016989 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 325989 event pairs, 6239 based on Foata normal form. 2/46928 useless extension candidates. Maximal degree in co-relation 668890. Up to 37766 conditions per place. [2023-01-27 20:22:41,762 INFO L137 encePairwiseOnDemand]: 646/661 looper letters, 2035 selfloop transitions, 1507 changer transitions 2/3544 dead transitions. [2023-01-27 20:22:41,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 3544 transitions, 108568 flow [2023-01-27 20:22:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 20:22:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 20:22:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5322 transitions. [2023-01-27 20:22:41,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35006248766690784 [2023-01-27 20:22:41,769 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5322 transitions. [2023-01-27 20:22:41,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5322 transitions. [2023-01-27 20:22:41,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:22:41,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5322 transitions. [2023-01-27 20:22:41,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 231.3913043478261) internal successors, (5322), 23 states have internal predecessors, (5322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 661.0) internal successors, (15864), 24 states have internal predecessors, (15864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,779 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 661.0) internal successors, (15864), 24 states have internal predecessors, (15864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:22:41,780 INFO L175 Difference]: Start difference. First operand has 554 places, 3327 transitions, 97032 flow. Second operand 23 states and 5322 transitions. [2023-01-27 20:22:41,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 3544 transitions, 108568 flow [2023-01-27 20:23:41,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 3544 transitions, 107904 flow, removed 145 selfloop flow, removed 14 redundant places. [2023-01-27 20:23:41,432 INFO L231 Difference]: Finished difference. Result has 565 places, 3357 transitions, 101063 flow [2023-01-27 20:23:41,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=96372, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1831, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=101063, PETRI_PLACES=565, PETRI_TRANSITIONS=3357} [2023-01-27 20:23:41,435 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 531 predicate places. [2023-01-27 20:23:41,435 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 3357 transitions, 101063 flow [2023-01-27 20:23:41,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 224.1875) internal successors, (7174), 32 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:41,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:41,436 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:41,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-27 20:23:41,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-27 20:23:41,644 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:23:41,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1755597948, now seen corresponding path program 22 times [2023-01-27 20:23:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:41,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000024233] [2023-01-27 20:23:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:41,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:42,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000024233] [2023-01-27 20:23:42,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000024233] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980039917] [2023-01-27 20:23:42,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:23:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:42,823 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:23:42,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-27 20:23:43,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:23:43,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:23:43,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-27 20:23:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:43,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:23:43,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:23:43,479 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 20:23:43,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-27 20:23:43,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:23:43,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-01-27 20:23:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:43,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:44,471 INFO L321 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-01-27 20:23:44,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 213 [2023-01-27 20:23:44,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:23:44,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 115 [2023-01-27 20:23:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:46,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980039917] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:46,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:46,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 13] total 45 [2023-01-27 20:23:46,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431768870] [2023-01-27 20:23:46,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-01-27 20:23:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-01-27 20:23:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1969, Unknown=5, NotChecked=0, Total=2162 [2023-01-27 20:23:46,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 661 [2023-01-27 20:23:46,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 3357 transitions, 101063 flow. Second operand has 47 states, 47 states have (on average 211.91489361702128) internal successors, (9960), 47 states have internal predecessors, (9960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:46,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:46,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 661 [2023-01-27 20:23:46,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-27 20:23:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:23:48,382 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:23:48,387 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:23:48,387 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:23:48,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-01-27 20:23:48,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-01-27 20:23:48,583 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 210/661 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 2316 conditions, 195 events (88/194 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 1017 event pairs, 9 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 2121. Up to 52 conditions per place.). [2023-01-27 20:23:48,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:23:48,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:23:48,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:23:48,585 INFO L445 BasicCegarLoop]: Path program histogram: [22, 6, 5, 1, 1] [2023-01-27 20:23:48,588 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:23:48,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:23:48,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:23:48 BasicIcfg [2023-01-27 20:23:48,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:23:48,591 INFO L158 Benchmark]: Toolchain (without parser) took 762452.63ms. Allocated memory was 383.8MB in the beginning and 14.6GB in the end (delta: 14.2GB). Free memory was 349.1MB in the beginning and 7.4GB in the end (delta: -7.1GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-01-27 20:23:48,592 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:23:48,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.36ms. Allocated memory is still 383.8MB. Free memory was 348.7MB in the beginning and 336.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 20:23:48,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.45ms. Allocated memory is still 383.8MB. Free memory was 336.8MB in the beginning and 334.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 20:23:48,593 INFO L158 Benchmark]: Boogie Preprocessor took 31.72ms. Allocated memory is still 383.8MB. Free memory was 334.0MB in the beginning and 331.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:23:48,593 INFO L158 Benchmark]: RCFGBuilder took 591.68ms. Allocated memory is still 383.8MB. Free memory was 331.9MB in the beginning and 307.1MB in the end (delta: 24.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-27 20:23:48,594 INFO L158 Benchmark]: TraceAbstraction took 761542.94ms. Allocated memory was 383.8MB in the beginning and 14.6GB in the end (delta: 14.2GB). Free memory was 306.4MB in the beginning and 7.4GB in the end (delta: -7.1GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. [2023-01-27 20:23:48,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 240.36ms. Allocated memory is still 383.8MB. Free memory was 348.7MB in the beginning and 336.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.45ms. Allocated memory is still 383.8MB. Free memory was 336.8MB in the beginning and 334.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.72ms. Allocated memory is still 383.8MB. Free memory was 334.0MB in the beginning and 331.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 591.68ms. Allocated memory is still 383.8MB. Free memory was 331.9MB in the beginning and 307.1MB in the end (delta: 24.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 761542.94ms. Allocated memory was 383.8MB in the beginning and 14.6GB in the end (delta: 14.2GB). Free memory was 306.4MB in the beginning and 7.4GB in the end (delta: -7.1GB). Peak memory consumption was 7.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 287 PlacesBefore, 34 PlacesAfterwards, 305 TransitionsBefore, 31 TransitionsAfterwards, 15390 CoEnabledTransitionPairs, 7 FixpointIterations, 128 TrivialSequentialCompositions, 126 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 34 ConcurrentYvCompositions, 21 ChoiceCompositions, 343 TotalNumberOfCompositions, 14128 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13349, independent: 13300, independent conditional: 0, independent unconditional: 13300, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8708, independent: 8685, independent conditional: 0, independent unconditional: 8685, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13349, independent: 4615, independent conditional: 0, independent unconditional: 4615, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 8708, unknown conditional: 0, unknown unconditional: 8708] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 210/661 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 2316 conditions, 195 events (88/194 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 1017 event pairs, 9 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 2121. Up to 52 conditions per place.). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 210/661 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 2316 conditions, 195 events (88/194 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 1017 event pairs, 9 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 2121. Up to 52 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 210/661 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 2316 conditions, 195 events (88/194 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 1017 event pairs, 9 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 2121. Up to 52 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (47states, 210/661 universal loopers) in iteration 35,while PetriNetUnfolder was constructing finite prefix that currently has 2316 conditions, 195 events (88/194 cut-off events. For 11943/11943 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 1017 event pairs, 9 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 2121. Up to 52 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 417 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 761.3s, OverallIterations: 35, TraceHistogramMax: 5, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 658.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 17 mSolverCounterUnknown, 11036 SdHoareTripleChecker+Valid, 33.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11036 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 28.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 398 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1332 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52727 IncrementalHoareTripleChecker+Invalid, 54474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1332 mSolverCounterUnsat, 0 mSDtfsCounter, 52727 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3162 GetRequests, 1718 SyntacticMatches, 50 SemanticMatches, 1394 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23356 ImplicationChecksByTransitivity, 120.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101063occurred in iteration=34, InterpolantAutomatonStates: 662, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 80.5s InterpolantComputationTime, 2480 NumberOfCodeBlocks, 2414 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 3416 ConstructedInterpolants, 242 QuantifiedInterpolants, 37758 SizeOfPredicates, 828 NumberOfNonLiveVariables, 12590 ConjunctsInSsa, 1258 ConjunctsInUnsatCore, 87 InterpolantComputations, 11 PerfectInterpolantSequences, 3520/3854 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown