/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:58:00,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:58:00,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:58:00,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:58:00,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:58:00,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:58:00,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:58:00,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:58:00,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:58:00,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:58:00,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:58:00,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:58:00,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:58:00,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:58:00,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:58:00,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:58:00,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:58:00,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:58:00,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:58:00,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:58:00,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:58:00,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:58:00,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:58:00,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:58:00,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:58:00,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:58:00,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:58:00,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:58:00,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:58:00,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:58:00,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:58:00,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:58:00,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:58:00,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:58:00,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:58:00,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:58:00,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:58:00,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:58:00,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:58:00,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:58:00,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:58:00,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 10:58:00,524 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:58:00,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:58:00,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:58:00,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:58:00,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:58:00,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:58:00,526 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:58:00,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:58:00,526 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:58:00,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:58:00,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:58:00,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:58:00,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:58:00,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:58:00,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:58:00,529 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:58:00,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:58:00,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:58:00,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:58:00,710 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:58:00,710 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:58:00,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2023-01-28 10:58:01,581 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:58:01,785 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:58:01,786 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2023-01-28 10:58:01,791 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433e7489b/d233c262fdb94fab819cf79552cacf6b/FLAG0747127d1 [2023-01-28 10:58:02,204 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433e7489b/d233c262fdb94fab819cf79552cacf6b [2023-01-28 10:58:02,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:58:02,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:58:02,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:58:02,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:58:02,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:58:02,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c017bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02, skipping insertion in model container [2023-01-28 10:58:02,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:58:02,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:58:02,344 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2023-01-28 10:58:02,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:58:02,361 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:58:02,379 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2023-01-28 10:58:02,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:58:02,391 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:58:02,391 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:58:02,395 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:58:02,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02 WrapperNode [2023-01-28 10:58:02,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:58:02,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:58:02,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:58:02,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:58:02,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,438 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-01-28 10:58:02,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:58:02,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:58:02,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:58:02,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:58:02,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,456 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:58:02,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:58:02,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:58:02,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:58:02,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (1/1) ... [2023-01-28 10:58:02,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:58:02,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:02,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 10:58:02,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 10:58:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:58:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:58:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:58:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:58:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:58:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:58:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:58:02,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:58:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:58:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:58:02,506 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 10:58:02,573 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:58:02,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:58:02,818 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:58:02,860 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:58:02,860 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 10:58:02,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:58:02 BoogieIcfgContainer [2023-01-28 10:58:02,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:58:02,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:58:02,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:58:02,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:58:02,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:58:02" (1/3) ... [2023-01-28 10:58:02,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682db092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:58:02, skipping insertion in model container [2023-01-28 10:58:02,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:58:02" (2/3) ... [2023-01-28 10:58:02,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682db092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:58:02, skipping insertion in model container [2023-01-28 10:58:02,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:58:02" (3/3) ... [2023-01-28 10:58:02,867 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2023-01-28 10:58:02,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:58:02,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:58:02,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:58:02,971 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 10:58:03,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 145 transitions, 314 flow [2023-01-28 10:58:03,043 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2023-01-28 10:58:03,043 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:58:03,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 12/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-01-28 10:58:03,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 145 transitions, 314 flow [2023-01-28 10:58:03,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 132 transitions, 282 flow [2023-01-28 10:58:03,064 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:58:03,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 282 flow [2023-01-28 10:58:03,071 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 282 flow [2023-01-28 10:58:03,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 282 flow [2023-01-28 10:58:03,092 INFO L130 PetriNetUnfolder]: 12/132 cut-off events. [2023-01-28 10:58:03,093 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:58:03,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 12/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-01-28 10:58:03,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 10:58:06,825 INFO L134 LiptonReduction]: Checked pairs total: 1523 [2023-01-28 10:58:06,825 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-01-28 10:58:06,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:58:06,848 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;@22287c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:58:06,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 10:58:06,852 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-28 10:58:06,853 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:58:06,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:06,853 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] [2023-01-28 10:58:06,853 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)] === [2023-01-28 10:58:06,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash -924859563, now seen corresponding path program 1 times [2023-01-28 10:58:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563955420] [2023-01-28 10:58:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563955420] [2023-01-28 10:58:07,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563955420] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:58:07,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:58:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 10:58:07,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291726157] [2023-01-28 10:58:07,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:58:07,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:58:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:07,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:58:07,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 10:58:07,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:58:07,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:07,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:07,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:58:07,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:07,617 INFO L130 PetriNetUnfolder]: 514/733 cut-off events. [2023-01-28 10:58:07,617 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-28 10:58:07,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 733 events. 514/733 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2552 event pairs, 137 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1179. Up to 348 conditions per place. [2023-01-28 10:58:07,622 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 50 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2023-01-28 10:58:07,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 288 flow [2023-01-28 10:58:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:58:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:58:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 848 transitions. [2023-01-28 10:58:07,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970037453183521 [2023-01-28 10:58:07,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 848 transitions. [2023-01-28 10:58:07,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 848 transitions. [2023-01-28 10:58:07,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:07,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 848 transitions. [2023-01-28 10:58:07,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.0) internal successors, (848), 8 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:07,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:07,646 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:07,647 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 8 states and 848 transitions. [2023-01-28 10:58:07,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 288 flow [2023-01-28 10:58:07,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 62 transitions, 260 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 10:58:07,667 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 118 flow [2023-01-28 10:58:07,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=118, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-01-28 10:58:07,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 10:58:07,671 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 118 flow [2023-01-28 10:58:07,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:07,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:07,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:58:07,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:58:07,672 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)] === [2023-01-28 10:58:07,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1563909876, now seen corresponding path program 1 times [2023-01-28 10:58:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:07,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371226231] [2023-01-28 10:58:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:07,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371226231] [2023-01-28 10:58:07,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371226231] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570118628] [2023-01-28 10:58:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:07,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:07,781 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) [2023-01-28 10:58:07,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 10:58:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:07,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:58:07,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:07,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570118628] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:07,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:58:07,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 10:58:07,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96001325] [2023-01-28 10:58:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:58:07,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:58:07,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:58:07,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:58:07,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-28 10:58:07,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:07,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:07,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-28 10:58:07,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:08,058 INFO L130 PetriNetUnfolder]: 451/682 cut-off events. [2023-01-28 10:58:08,059 INFO L131 PetriNetUnfolder]: For 378/418 co-relation queries the response was YES. [2023-01-28 10:58:08,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 682 events. 451/682 cut-off events. For 378/418 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2501 event pairs, 114 based on Foata normal form. 30/596 useless extension candidates. Maximal degree in co-relation 1921. Up to 527 conditions per place. [2023-01-28 10:58:08,064 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 37 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-01-28 10:58:08,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 256 flow [2023-01-28 10:58:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:58:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:58:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-01-28 10:58:08,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41872659176029964 [2023-01-28 10:58:08,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-01-28 10:58:08,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-01-28 10:58:08,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:08,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-01-28 10:58:08,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:08,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:08,070 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:08,070 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 118 flow. Second operand 5 states and 559 transitions. [2023-01-28 10:58:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 256 flow [2023-01-28 10:58:08,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 245 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 10:58:08,073 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 127 flow [2023-01-28 10:58:08,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-01-28 10:58:08,074 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-28 10:58:08,074 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 127 flow [2023-01-28 10:58:08,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:08,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:08,075 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] [2023-01-28 10:58:08,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 10:58:08,280 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 [2023-01-28 10:58:08,281 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)] === [2023-01-28 10:58:08,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1717822039, now seen corresponding path program 1 times [2023-01-28 10:58:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114000208] [2023-01-28 10:58:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114000208] [2023-01-28 10:58:09,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114000208] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:09,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392196177] [2023-01-28 10:58:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:09,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:09,502 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) [2023-01-28 10:58:09,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 10:58:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:09,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 10:58:09,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:09,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 10:58:09,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:58:09,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:58:09,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:58:10,135 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 10:58:10,136 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 73 treesize of output 59 [2023-01-28 10:58:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:10,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:11,282 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (<= c_~min2~0 c_~min3~0)) (.cse5 (= c_~min2~0 c_~min1~0)) (.cse6 (< c_~min3~0 c_~min2~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (<= c_~min3~0 .cse0) (= .cse1 .cse0) (<= c_~min2~0 .cse0) (<= c_~min1~0 .cse1))))) (or (and (or .cse4 (= c_~min1~0 c_~min3~0)) (or .cse5 .cse6)) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (or (< (select .cse7 c_~A~0.offset) c_~min1~0) (< (select .cse7 .cse3) c_~min3~0))))) (or .cse4 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse8 (select .cse9 c_~A~0.offset))) (or (= .cse8 c_~min3~0) (< (select .cse9 .cse3) c_~min3~0) (<= c_~min1~0 .cse8)))))) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse10 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse11 (select .cse10 .cse3))) (or (< (select .cse10 c_~A~0.offset) c_~min1~0) (<= c_~min3~0 .cse11) (= c_~min1~0 .cse11) (<= c_~min2~0 .cse11))))) (or .cse5 (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse13 (select .cse12 .cse3))) (or (< (select .cse12 c_~A~0.offset) c_~min1~0) (<= c_~min3~0 .cse13) (< .cse13 c_~min2~0)))))) (or (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse15 (select .cse14 c_~A~0.offset))) (or (< (select .cse14 .cse3) c_~min3~0) (= c_~min2~0 .cse15) (<= c_~min1~0 .cse15))))) .cse6) (forall ((v_ArrVal_113 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse17 (select .cse18 c_~A~0.offset)) (.cse16 (select .cse18 .cse3))) (or (<= c_~min3~0 .cse16) (= c_~min2~0 .cse17) (<= c_~min1~0 .cse17) (< .cse16 c_~min2~0))))))) is different from false [2023-01-28 10:58:11,453 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse12 (<= c_~min2~0 c_~min3~0)) (.cse6 (= c_~min2~0 c_~min1~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0))) (.cse15 (< c_~min3~0 c_~min2~0))) (and (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse2))) (or (= c_~min1~0 .cse0) (<= c_~min2~0 .cse0) (<= c_~min3~0 .cse0) (< (select .cse1 c_~A~0.offset) c_~min1~0))))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse5 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse3 (select .cse5 c_~A~0.offset)) (.cse4 (select .cse5 .cse2))) (or (= c_~min2~0 .cse3) (<= c_~min1~0 .cse3) (< .cse4 c_~min2~0) (<= c_~min3~0 .cse4))))) (or .cse6 (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse7 (select .cse8 .cse2))) (or (< .cse7 c_~min2~0) (<= c_~min3~0 .cse7) (< (select .cse8 c_~A~0.offset) c_~min1~0)))))) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse9 (select .cse11 c_~A~0.offset)) (.cse10 (select .cse11 .cse2))) (or (<= c_~min1~0 .cse9) (<= c_~min2~0 .cse10) (= .cse9 .cse10) (<= c_~min3~0 .cse10))))) (or .cse12 (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse13 (select .cse14 c_~A~0.offset))) (or (<= c_~min1~0 .cse13) (< (select .cse14 .cse2) c_~min3~0) (= c_~min3~0 .cse13)))))) (or (and (or .cse12 (= c_~min1~0 c_~min3~0)) (or .cse6 .cse15)) (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (or (< (select .cse16 .cse2) c_~min3~0) (< (select .cse16 c_~A~0.offset) c_~min1~0))))) (or (forall ((v_ArrVal_113 (Array Int Int)) (v_ArrVal_112 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_112) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_113) c_~A~0.base))) (let ((.cse17 (select .cse18 c_~A~0.offset))) (or (= c_~min2~0 .cse17) (<= c_~min1~0 .cse17) (< (select .cse18 .cse2) c_~min3~0))))) .cse15))) is different from false [2023-01-28 10:58:12,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:12,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 89 [2023-01-28 10:58:12,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:12,448 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 541 treesize of output 521 [2023-01-28 10:58:12,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:12,465 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 513 treesize of output 441 [2023-01-28 10:58:12,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:12,482 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 433 treesize of output 401 [2023-01-28 10:58:12,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:12,503 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 205 treesize of output 193 [2023-01-28 10:58:14,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:14,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 85 [2023-01-28 10:58:14,069 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,069 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 4373 treesize of output 4185 [2023-01-28 10:58:14,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:14,168 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 221 [2023-01-28 10:58:14,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:14,179 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 418 treesize of output 354 [2023-01-28 10:58:14,195 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,195 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 218 treesize of output 190 [2023-01-28 10:58:14,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:14,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 65 [2023-01-28 10:58:14,522 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,523 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 764 treesize of output 736 [2023-01-28 10:58:14,553 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,554 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 350 treesize of output 314 [2023-01-28 10:58:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:14,569 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 142 [2023-01-28 10:58:14,582 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,582 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 159 treesize of output 143 [2023-01-28 10:58:14,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:14,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 69 [2023-01-28 10:58:14,837 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,838 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 1688 treesize of output 1612 [2023-01-28 10:58:14,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:14,875 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 156 [2023-01-28 10:58:14,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:14,885 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 142 [2023-01-28 10:58:14,983 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:14,983 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 195 treesize of output 143 [2023-01-28 10:58:15,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:15,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2023-01-28 10:58:15,176 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:15,176 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 2187 treesize of output 2095 [2023-01-28 10:58:15,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:15,244 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 111 [2023-01-28 10:58:15,255 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:15,255 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 235 treesize of output 207 [2023-01-28 10:58:15,272 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:15,272 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 109 treesize of output 97 [2023-01-28 10:58:15,342 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 10:58:15,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 1 [2023-01-28 10:58:15,352 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 10:58:15,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 1 [2023-01-28 10:58:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:15,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392196177] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:15,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:15,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 29 [2023-01-28 10:58:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695771989] [2023-01-28 10:58:15,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:15,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:58:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:58:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=689, Unknown=2, NotChecked=110, Total=930 [2023-01-28 10:58:15,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-28 10:58:15,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 127 flow. Second operand has 31 states, 31 states have (on average 71.03225806451613) internal successors, (2202), 31 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:15,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:15,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-28 10:58:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:17,718 INFO L130 PetriNetUnfolder]: 1091/1613 cut-off events. [2023-01-28 10:58:17,718 INFO L131 PetriNetUnfolder]: For 1313/1313 co-relation queries the response was YES. [2023-01-28 10:58:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4932 conditions, 1613 events. 1091/1613 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6171 event pairs, 160 based on Foata normal form. 17/1414 useless extension candidates. Maximal degree in co-relation 3672. Up to 999 conditions per place. [2023-01-28 10:58:17,726 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 108 selfloop transitions, 67 changer transitions 13/188 dead transitions. [2023-01-28 10:58:17,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 188 transitions, 1077 flow [2023-01-28 10:58:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 10:58:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 10:58:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1906 transitions. [2023-01-28 10:58:17,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2855430711610487 [2023-01-28 10:58:17,731 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1906 transitions. [2023-01-28 10:58:17,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1906 transitions. [2023-01-28 10:58:17,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:17,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1906 transitions. [2023-01-28 10:58:17,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 76.24) internal successors, (1906), 25 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:17,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:17,744 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:17,744 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 127 flow. Second operand 25 states and 1906 transitions. [2023-01-28 10:58:17,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 188 transitions, 1077 flow [2023-01-28 10:58:17,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 188 transitions, 1016 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 10:58:17,752 INFO L231 Difference]: Finished difference. Result has 73 places, 96 transitions, 619 flow [2023-01-28 10:58:17,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=619, PETRI_PLACES=73, PETRI_TRANSITIONS=96} [2023-01-28 10:58:17,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2023-01-28 10:58:17,753 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 96 transitions, 619 flow [2023-01-28 10:58:17,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 71.03225806451613) internal successors, (2202), 31 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:17,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:17,754 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] [2023-01-28 10:58:17,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:58:17,959 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 [2023-01-28 10:58:17,959 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)] === [2023-01-28 10:58:17,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1797774933, now seen corresponding path program 2 times [2023-01-28 10:58:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823394300] [2023-01-28 10:58:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823394300] [2023-01-28 10:58:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823394300] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827892558] [2023-01-28 10:58:18,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:58:18,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:18,533 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) [2023-01-28 10:58:18,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 10:58:18,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:58:18,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:58:18,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:58:18,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:18,871 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:58:18,873 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:18,873 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 64 treesize of output 37 [2023-01-28 10:58:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:18,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:19,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:19,209 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 125 treesize of output 69 [2023-01-28 10:58:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:19,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827892558] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:19,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:19,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-01-28 10:58:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139084493] [2023-01-28 10:58:19,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 10:58:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 10:58:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2023-01-28 10:58:19,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 267 [2023-01-28 10:58:19,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 96 transitions, 619 flow. Second operand has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:19,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:19,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 267 [2023-01-28 10:58:19,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:20,296 INFO L130 PetriNetUnfolder]: 1348/2024 cut-off events. [2023-01-28 10:58:20,297 INFO L131 PetriNetUnfolder]: For 4141/4189 co-relation queries the response was YES. [2023-01-28 10:58:20,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7802 conditions, 2024 events. 1348/2024 cut-off events. For 4141/4189 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8962 event pairs, 148 based on Foata normal form. 43/2055 useless extension candidates. Maximal degree in co-relation 7735. Up to 1321 conditions per place. [2023-01-28 10:58:20,308 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 109 selfloop transitions, 69 changer transitions 4/189 dead transitions. [2023-01-28 10:58:20,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 189 transitions, 1397 flow [2023-01-28 10:58:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 10:58:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 10:58:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1014 transitions. [2023-01-28 10:58:20,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3452502553626149 [2023-01-28 10:58:20,310 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1014 transitions. [2023-01-28 10:58:20,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1014 transitions. [2023-01-28 10:58:20,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:20,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1014 transitions. [2023-01-28 10:58:20,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.18181818181819) internal successors, (1014), 11 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:20,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:20,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:20,316 INFO L175 Difference]: Start difference. First operand has 73 places, 96 transitions, 619 flow. Second operand 11 states and 1014 transitions. [2023-01-28 10:58:20,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 189 transitions, 1397 flow [2023-01-28 10:58:20,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 189 transitions, 1376 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 10:58:20,332 INFO L231 Difference]: Finished difference. Result has 86 places, 128 transitions, 1055 flow [2023-01-28 10:58:20,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=86, PETRI_TRANSITIONS=128} [2023-01-28 10:58:20,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 10:58:20,333 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 128 transitions, 1055 flow [2023-01-28 10:58:20,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:20,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:20,334 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] [2023-01-28 10:58:20,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 10:58:20,539 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 [2023-01-28 10:58:20,540 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)] === [2023-01-28 10:58:20,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash 184588913, now seen corresponding path program 3 times [2023-01-28 10:58:20,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:20,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319758056] [2023-01-28 10:58:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:21,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:21,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319758056] [2023-01-28 10:58:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319758056] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:21,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831531835] [2023-01-28 10:58:21,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:58:21,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:21,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:21,155 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) [2023-01-28 10:58:21,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 10:58:21,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:58:21,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:58:21,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 10:58:21,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:21,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:21,491 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 34 treesize of output 32 [2023-01-28 10:58:21,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:58:21,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:21,607 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 64 treesize of output 37 [2023-01-28 10:58:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:21,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:22,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:22,081 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 241 treesize of output 177 [2023-01-28 10:58:22,086 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 147 treesize of output 141 [2023-01-28 10:58:22,092 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 141 treesize of output 129 [2023-01-28 10:58:22,095 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 129 treesize of output 111 [2023-01-28 10:58:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831531835] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:22,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:22,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 26 [2023-01-28 10:58:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20885439] [2023-01-28 10:58:22,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:22,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 10:58:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 10:58:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=650, Unknown=2, NotChecked=0, Total=756 [2023-01-28 10:58:22,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 267 [2023-01-28 10:58:22,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 128 transitions, 1055 flow. Second operand has 28 states, 28 states have (on average 77.28571428571429) internal successors, (2164), 28 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:22,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:22,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 267 [2023-01-28 10:58:22,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:25,933 INFO L130 PetriNetUnfolder]: 2159/3216 cut-off events. [2023-01-28 10:58:25,933 INFO L131 PetriNetUnfolder]: For 10698/10698 co-relation queries the response was YES. [2023-01-28 10:58:25,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14353 conditions, 3216 events. 2159/3216 cut-off events. For 10698/10698 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15069 event pairs, 161 based on Foata normal form. 44/3260 useless extension candidates. Maximal degree in co-relation 14314. Up to 1871 conditions per place. [2023-01-28 10:58:25,953 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 196 selfloop transitions, 121 changer transitions 2/319 dead transitions. [2023-01-28 10:58:25,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 319 transitions, 2747 flow [2023-01-28 10:58:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 10:58:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 10:58:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1707 transitions. [2023-01-28 10:58:25,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196629213483146 [2023-01-28 10:58:25,958 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1707 transitions. [2023-01-28 10:58:25,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1707 transitions. [2023-01-28 10:58:25,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:25,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1707 transitions. [2023-01-28 10:58:25,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 85.35) internal successors, (1707), 20 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:25,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:25,966 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:25,966 INFO L175 Difference]: Start difference. First operand has 86 places, 128 transitions, 1055 flow. Second operand 20 states and 1707 transitions. [2023-01-28 10:58:25,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 319 transitions, 2747 flow [2023-01-28 10:58:25,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 319 transitions, 2714 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-01-28 10:58:25,998 INFO L231 Difference]: Finished difference. Result has 112 places, 192 transitions, 1994 flow [2023-01-28 10:58:25,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1994, PETRI_PLACES=112, PETRI_TRANSITIONS=192} [2023-01-28 10:58:25,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2023-01-28 10:58:25,998 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 192 transitions, 1994 flow [2023-01-28 10:58:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.28571428571429) internal successors, (2164), 28 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:25,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:25,999 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] [2023-01-28 10:58:26,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 10:58:26,204 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 [2023-01-28 10:58:26,204 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)] === [2023-01-28 10:58:26,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash -542212045, now seen corresponding path program 4 times [2023-01-28 10:58:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:26,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220349398] [2023-01-28 10:58:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:26,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220349398] [2023-01-28 10:58:26,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220349398] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280688278] [2023-01-28 10:58:26,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:58:26,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:26,828 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) [2023-01-28 10:58:26,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 10:58:26,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:58:26,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:58:26,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 10:58:26,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:27,231 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 10:58:27,232 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 77 treesize of output 63 [2023-01-28 10:58:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:27,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:27,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:27,593 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 117 treesize of output 69 [2023-01-28 10:58:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:27,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280688278] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:27,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:27,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 23 [2023-01-28 10:58:27,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574635475] [2023-01-28 10:58:27,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:27,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 10:58:27,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:27,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 10:58:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-01-28 10:58:27,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 267 [2023-01-28 10:58:27,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 192 transitions, 1994 flow. Second operand has 25 states, 25 states have (on average 81.48) internal successors, (2037), 25 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:27,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:27,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 267 [2023-01-28 10:58:27,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:31,173 INFO L130 PetriNetUnfolder]: 3690/5659 cut-off events. [2023-01-28 10:58:31,173 INFO L131 PetriNetUnfolder]: For 33384/33384 co-relation queries the response was YES. [2023-01-28 10:58:31,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29048 conditions, 5659 events. 3690/5659 cut-off events. For 33384/33384 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31189 event pairs, 190 based on Foata normal form. 7/5666 useless extension candidates. Maximal degree in co-relation 28999. Up to 2351 conditions per place. [2023-01-28 10:58:31,210 INFO L137 encePairwiseOnDemand]: 252/267 looper letters, 294 selfloop transitions, 282 changer transitions 36/612 dead transitions. [2023-01-28 10:58:31,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 612 transitions, 6418 flow [2023-01-28 10:58:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-01-28 10:58:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-01-28 10:58:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3986 transitions. [2023-01-28 10:58:31,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32453997720241 [2023-01-28 10:58:31,228 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3986 transitions. [2023-01-28 10:58:31,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3986 transitions. [2023-01-28 10:58:31,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:31,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3986 transitions. [2023-01-28 10:58:31,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 86.65217391304348) internal successors, (3986), 46 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:31,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:31,248 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:31,248 INFO L175 Difference]: Start difference. First operand has 112 places, 192 transitions, 1994 flow. Second operand 46 states and 3986 transitions. [2023-01-28 10:58:31,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 612 transitions, 6418 flow [2023-01-28 10:58:31,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 612 transitions, 6068 flow, removed 153 selfloop flow, removed 7 redundant places. [2023-01-28 10:58:31,341 INFO L231 Difference]: Finished difference. Result has 178 places, 398 transitions, 4869 flow [2023-01-28 10:58:31,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4869, PETRI_PLACES=178, PETRI_TRANSITIONS=398} [2023-01-28 10:58:31,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2023-01-28 10:58:31,342 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 398 transitions, 4869 flow [2023-01-28 10:58:31,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.48) internal successors, (2037), 25 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:31,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:31,343 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] [2023-01-28 10:58:31,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 10:58:31,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:31,548 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)] === [2023-01-28 10:58:31,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:31,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1208376447, now seen corresponding path program 5 times [2023-01-28 10:58:31,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:31,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232581587] [2023-01-28 10:58:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:31,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232581587] [2023-01-28 10:58:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232581587] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916468701] [2023-01-28 10:58:32,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:58:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:32,289 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) [2023-01-28 10:58:32,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 10:58:32,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 10:58:32,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:58:32,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 10:58:32,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:32,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:32,590 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 77 treesize of output 71 [2023-01-28 10:58:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:33,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:33,269 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:58:33,270 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 117 treesize of output 65 [2023-01-28 10:58:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916468701] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:33,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 21 [2023-01-28 10:58:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184553798] [2023-01-28 10:58:33,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:33,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 10:58:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 10:58:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-01-28 10:58:33,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 267 [2023-01-28 10:58:33,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 398 transitions, 4869 flow. Second operand has 23 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:33,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:33,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 267 [2023-01-28 10:58:33,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:36,068 INFO L130 PetriNetUnfolder]: 4546/7224 cut-off events. [2023-01-28 10:58:36,068 INFO L131 PetriNetUnfolder]: For 101225/101596 co-relation queries the response was YES. [2023-01-28 10:58:36,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48306 conditions, 7224 events. 4546/7224 cut-off events. For 101225/101596 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 44972 event pairs, 486 based on Foata normal form. 227/7432 useless extension candidates. Maximal degree in co-relation 48230. Up to 4394 conditions per place. [2023-01-28 10:58:36,120 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 298 selfloop transitions, 339 changer transitions 14/672 dead transitions. [2023-01-28 10:58:36,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 672 transitions, 9216 flow [2023-01-28 10:58:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 10:58:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 10:58:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2015 transitions. [2023-01-28 10:58:36,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3144506866416979 [2023-01-28 10:58:36,123 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2015 transitions. [2023-01-28 10:58:36,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2015 transitions. [2023-01-28 10:58:36,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:36,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2015 transitions. [2023-01-28 10:58:36,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 83.95833333333333) internal successors, (2015), 24 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:36,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 267.0) internal successors, (6675), 25 states have internal predecessors, (6675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:36,131 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 267.0) internal successors, (6675), 25 states have internal predecessors, (6675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:36,131 INFO L175 Difference]: Start difference. First operand has 178 places, 398 transitions, 4869 flow. Second operand 24 states and 2015 transitions. [2023-01-28 10:58:36,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 672 transitions, 9216 flow [2023-01-28 10:58:36,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 672 transitions, 8312 flow, removed 436 selfloop flow, removed 7 redundant places. [2023-01-28 10:58:36,438 INFO L231 Difference]: Finished difference. Result has 199 places, 572 transitions, 7408 flow [2023-01-28 10:58:36,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=7408, PETRI_PLACES=199, PETRI_TRANSITIONS=572} [2023-01-28 10:58:36,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-01-28 10:58:36,439 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 572 transitions, 7408 flow [2023-01-28 10:58:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:36,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:36,440 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] [2023-01-28 10:58:36,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 10:58:36,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:36,645 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)] === [2023-01-28 10:58:36,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1180941759, now seen corresponding path program 6 times [2023-01-28 10:58:36,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:36,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178920650] [2023-01-28 10:58:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:37,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:37,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178920650] [2023-01-28 10:58:37,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178920650] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:37,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779668715] [2023-01-28 10:58:37,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:58:37,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:37,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:37,133 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) [2023-01-28 10:58:37,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 10:58:37,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 10:58:37,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:58:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:58:37,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:37,561 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 10:58:37,561 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 73 treesize of output 59 [2023-01-28 10:58:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:37,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:37,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:37,910 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 101 treesize of output 69 [2023-01-28 10:58:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:38,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779668715] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:38,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:38,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2023-01-28 10:58:38,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803898730] [2023-01-28 10:58:38,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 10:58:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 10:58:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-01-28 10:58:38,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 267 [2023-01-28 10:58:38,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 572 transitions, 7408 flow. Second operand has 26 states, 26 states have (on average 81.65384615384616) internal successors, (2123), 26 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:38,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:38,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 267 [2023-01-28 10:58:38,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:40,608 INFO L130 PetriNetUnfolder]: 5457/8532 cut-off events. [2023-01-28 10:58:40,608 INFO L131 PetriNetUnfolder]: For 139401/139401 co-relation queries the response was YES. [2023-01-28 10:58:40,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61020 conditions, 8532 events. 5457/8532 cut-off events. For 139401/139401 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 51665 event pairs, 1042 based on Foata normal form. 5/8537 useless extension candidates. Maximal degree in co-relation 60938. Up to 7397 conditions per place. [2023-01-28 10:58:40,677 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 557 selfloop transitions, 185 changer transitions 17/759 dead transitions. [2023-01-28 10:58:40,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 759 transitions, 10998 flow [2023-01-28 10:58:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 10:58:40,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 10:58:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2580 transitions. [2023-01-28 10:58:40,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32209737827715357 [2023-01-28 10:58:40,680 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2580 transitions. [2023-01-28 10:58:40,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2580 transitions. [2023-01-28 10:58:40,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:40,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2580 transitions. [2023-01-28 10:58:40,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 86.0) internal successors, (2580), 30 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:40,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 267.0) internal successors, (8277), 31 states have internal predecessors, (8277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:40,689 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 267.0) internal successors, (8277), 31 states have internal predecessors, (8277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:40,689 INFO L175 Difference]: Start difference. First operand has 199 places, 572 transitions, 7408 flow. Second operand 30 states and 2580 transitions. [2023-01-28 10:58:40,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 759 transitions, 10998 flow [2023-01-28 10:58:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 759 transitions, 10246 flow, removed 338 selfloop flow, removed 6 redundant places. [2023-01-28 10:58:41,444 INFO L231 Difference]: Finished difference. Result has 233 places, 645 transitions, 8388 flow [2023-01-28 10:58:41,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6885, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8388, PETRI_PLACES=233, PETRI_TRANSITIONS=645} [2023-01-28 10:58:41,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-01-28 10:58:41,446 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 645 transitions, 8388 flow [2023-01-28 10:58:41,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 81.65384615384616) internal successors, (2123), 26 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:41,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:41,447 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] [2023-01-28 10:58:41,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 10:58:41,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:41,652 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)] === [2023-01-28 10:58:41,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1868694365, now seen corresponding path program 7 times [2023-01-28 10:58:41,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:41,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258432680] [2023-01-28 10:58:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:41,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:42,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:42,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258432680] [2023-01-28 10:58:42,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258432680] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:42,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107755559] [2023-01-28 10:58:42,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:58:42,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:42,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:42,742 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) [2023-01-28 10:58:42,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 10:58:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:42,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 10:58:42,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:43,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:43,095 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 34 treesize of output 32 [2023-01-28 10:58:43,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:58:43,176 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 34 treesize of output 32 [2023-01-28 10:58:43,320 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:58:43,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:43,322 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 64 treesize of output 37 [2023-01-28 10:58:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:43,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:43,720 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~min2~0 c_~min1~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or .cse0 (forall ((v_ArrVal_380 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse2))) (or (<= c_~min3~0 .cse1) (< .cse1 c_~min2~0))))) (or (forall ((v_ArrVal_380 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse2) c_~min3~0)) (and (or (<= c_~min2~0 c_~min3~0) (= c_~min1~0 c_~min3~0)) (or .cse0 (< c_~min3~0 c_~min2~0)))) (forall ((v_ArrVal_380 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_380) c_~A~0.base) .cse2))) (or (<= c_~min3~0 .cse3) (<= c_~min2~0 .cse3) (= c_~min1~0 .cse3)))))) is different from false [2023-01-28 10:58:43,936 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:58:43,938 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 938 treesize of output 826 [2023-01-28 10:58:43,960 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 376 treesize of output 364 [2023-01-28 10:58:43,969 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 364 treesize of output 340 [2023-01-28 10:58:43,976 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 340 treesize of output 322 [2023-01-28 10:58:43,988 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 322 treesize of output 286 [2023-01-28 10:58:43,996 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 286 treesize of output 280 [2023-01-28 10:58:44,025 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 280 treesize of output 268 [2023-01-28 10:58:44,247 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 10:58:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:44,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107755559] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:44,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:44,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2023-01-28 10:58:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071113406] [2023-01-28 10:58:44,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:58:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:58:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=724, Unknown=7, NotChecked=56, Total=930 [2023-01-28 10:58:44,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-28 10:58:44,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 645 transitions, 8388 flow. Second operand has 31 states, 31 states have (on average 71.2258064516129) internal successors, (2208), 31 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:44,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:44,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-28 10:58:44,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:49,502 INFO L130 PetriNetUnfolder]: 6725/10505 cut-off events. [2023-01-28 10:58:49,502 INFO L131 PetriNetUnfolder]: For 164139/164139 co-relation queries the response was YES. [2023-01-28 10:58:49,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75185 conditions, 10505 events. 6725/10505 cut-off events. For 164139/164139 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 66076 event pairs, 834 based on Foata normal form. 4/10509 useless extension candidates. Maximal degree in co-relation 75091. Up to 6770 conditions per place. [2023-01-28 10:58:49,620 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 547 selfloop transitions, 376 changer transitions 8/931 dead transitions. [2023-01-28 10:58:49,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 931 transitions, 13615 flow [2023-01-28 10:58:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 10:58:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 10:58:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1580 transitions. [2023-01-28 10:58:49,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2958801498127341 [2023-01-28 10:58:49,623 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1580 transitions. [2023-01-28 10:58:49,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1580 transitions. [2023-01-28 10:58:49,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:49,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1580 transitions. [2023-01-28 10:58:49,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 79.0) internal successors, (1580), 20 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:49,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:49,629 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:49,629 INFO L175 Difference]: Start difference. First operand has 233 places, 645 transitions, 8388 flow. Second operand 20 states and 1580 transitions. [2023-01-28 10:58:49,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 931 transitions, 13615 flow [2023-01-28 10:58:50,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 931 transitions, 13203 flow, removed 165 selfloop flow, removed 12 redundant places. [2023-01-28 10:58:50,282 INFO L231 Difference]: Finished difference. Result has 250 places, 792 transitions, 11517 flow [2023-01-28 10:58:50,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7985, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11517, PETRI_PLACES=250, PETRI_TRANSITIONS=792} [2023-01-28 10:58:50,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2023-01-28 10:58:50,283 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 792 transitions, 11517 flow [2023-01-28 10:58:50,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 71.2258064516129) internal successors, (2208), 31 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:50,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:50,283 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] [2023-01-28 10:58:50,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 10:58:50,488 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,SelfDestructingSolverStorable8 [2023-01-28 10:58:50,489 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)] === [2023-01-28 10:58:50,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1505548975, now seen corresponding path program 1 times [2023-01-28 10:58:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:50,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827194474] [2023-01-28 10:58:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:50,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:50,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827194474] [2023-01-28 10:58:50,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827194474] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:50,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242684304] [2023-01-28 10:58:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:50,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:50,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:50,585 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) [2023-01-28 10:58:50,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 10:58:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:50,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 10:58:50,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:50,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:58:50,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242684304] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:50,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:50,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 10:58:50,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892892287] [2023-01-28 10:58:50,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:50,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 10:58:50,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 10:58:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-01-28 10:58:50,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:58:50,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 792 transitions, 11517 flow. Second operand has 18 states, 18 states have (on average 100.27777777777777) internal successors, (1805), 18 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:50,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:50,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:58:50,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:54,338 INFO L130 PetriNetUnfolder]: 9623/15486 cut-off events. [2023-01-28 10:58:54,338 INFO L131 PetriNetUnfolder]: For 323543/323580 co-relation queries the response was YES. [2023-01-28 10:58:54,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119250 conditions, 15486 events. 9623/15486 cut-off events. For 323543/323580 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111514 event pairs, 693 based on Foata normal form. 362/15832 useless extension candidates. Maximal degree in co-relation 119146. Up to 3455 conditions per place. [2023-01-28 10:58:54,472 INFO L137 encePairwiseOnDemand]: 258/267 looper letters, 1417 selfloop transitions, 388 changer transitions 30/1850 dead transitions. [2023-01-28 10:58:54,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1850 transitions, 28628 flow [2023-01-28 10:58:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 10:58:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 10:58:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2149 transitions. [2023-01-28 10:58:54,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40243445692883895 [2023-01-28 10:58:54,474 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2149 transitions. [2023-01-28 10:58:54,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2149 transitions. [2023-01-28 10:58:54,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:54,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2149 transitions. [2023-01-28 10:58:54,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 107.45) internal successors, (2149), 20 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:54,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:54,481 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:54,481 INFO L175 Difference]: Start difference. First operand has 250 places, 792 transitions, 11517 flow. Second operand 20 states and 2149 transitions. [2023-01-28 10:58:54,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1850 transitions, 28628 flow [2023-01-28 10:58:56,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 1850 transitions, 27706 flow, removed 371 selfloop flow, removed 8 redundant places. [2023-01-28 10:58:56,122 INFO L231 Difference]: Finished difference. Result has 273 places, 1020 transitions, 16228 flow [2023-01-28 10:58:56,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10915, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=16228, PETRI_PLACES=273, PETRI_TRANSITIONS=1020} [2023-01-28 10:58:56,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-01-28 10:58:56,123 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 1020 transitions, 16228 flow [2023-01-28 10:58:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 100.27777777777777) internal successors, (1805), 18 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:56,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:58:56,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:58:56,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 10:58:56,329 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,SelfDestructingSolverStorable9 [2023-01-28 10:58:56,329 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)] === [2023-01-28 10:58:56,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:58:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash -751990924, now seen corresponding path program 8 times [2023-01-28 10:58:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:58:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132644892] [2023-01-28 10:58:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:58:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:58:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:58:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:56,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:58:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132644892] [2023-01-28 10:58:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132644892] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:58:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855780734] [2023-01-28 10:58:56,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:58:56,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:58:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:58:56,402 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) [2023-01-28 10:58:56,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 10:58:56,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:58:56,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:58:56,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:58:56,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:58:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:56,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:58:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:58:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855780734] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:58:56,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:58:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-01-28 10:58:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580414798] [2023-01-28 10:58:56,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:58:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:58:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:58:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:58:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:58:56,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-28 10:58:56,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1020 transitions, 16228 flow. Second operand has 15 states, 15 states have (on average 107.53333333333333) internal successors, (1613), 15 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:56,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:58:56,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-28 10:58:56,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:58:59,695 INFO L130 PetriNetUnfolder]: 7582/12115 cut-off events. [2023-01-28 10:58:59,695 INFO L131 PetriNetUnfolder]: For 327760/329675 co-relation queries the response was YES. [2023-01-28 10:58:59,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102540 conditions, 12115 events. 7582/12115 cut-off events. For 327760/329675 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 84758 event pairs, 2057 based on Foata normal form. 1018/12761 useless extension candidates. Maximal degree in co-relation 102424. Up to 9305 conditions per place. [2023-01-28 10:58:59,799 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 824 selfloop transitions, 82 changer transitions 2/1021 dead transitions. [2023-01-28 10:58:59,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1021 transitions, 17872 flow [2023-01-28 10:58:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:58:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:58:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2023-01-28 10:58:59,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803638309256287 [2023-01-28 10:58:59,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2023-01-28 10:58:59,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2023-01-28 10:58:59,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:58:59,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2023-01-28 10:58:59,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:59,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:59,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:58:59,803 INFO L175 Difference]: Start difference. First operand has 273 places, 1020 transitions, 16228 flow. Second operand 7 states and 800 transitions. [2023-01-28 10:58:59,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1021 transitions, 17872 flow [2023-01-28 10:59:03,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1021 transitions, 16771 flow, removed 543 selfloop flow, removed 6 redundant places. [2023-01-28 10:59:03,162 INFO L231 Difference]: Finished difference. Result has 276 places, 938 transitions, 14282 flow [2023-01-28 10:59:03,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=13813, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14282, PETRI_PLACES=276, PETRI_TRANSITIONS=938} [2023-01-28 10:59:03,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2023-01-28 10:59:03,163 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 938 transitions, 14282 flow [2023-01-28 10:59:03,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.53333333333333) internal successors, (1613), 15 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:03,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:03,164 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] [2023-01-28 10:59:03,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 10:59:03,368 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,SelfDestructingSolverStorable10 [2023-01-28 10:59:03,368 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)] === [2023-01-28 10:59:03,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1935712453, now seen corresponding path program 2 times [2023-01-28 10:59:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283131570] [2023-01-28 10:59:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:03,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283131570] [2023-01-28 10:59:03,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283131570] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404067704] [2023-01-28 10:59:03,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:59:03,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:03,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:03,457 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) [2023-01-28 10:59:03,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 10:59:03,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:59:03,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:03,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 10:59:03,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:03,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:03,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404067704] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:03,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:03,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-01-28 10:59:03,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344688281] [2023-01-28 10:59:03,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:03,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 10:59:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:03,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 10:59:03,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-01-28 10:59:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:03,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 938 transitions, 14282 flow. Second operand has 15 states, 15 states have (on average 101.4) internal successors, (1521), 15 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:03,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:03,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:06,396 INFO L130 PetriNetUnfolder]: 6570/10984 cut-off events. [2023-01-28 10:59:06,397 INFO L131 PetriNetUnfolder]: For 160592/160651 co-relation queries the response was YES. [2023-01-28 10:59:06,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74733 conditions, 10984 events. 6570/10984 cut-off events. For 160592/160651 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 78737 event pairs, 695 based on Foata normal form. 830/11798 useless extension candidates. Maximal degree in co-relation 74617. Up to 6506 conditions per place. [2023-01-28 10:59:06,485 INFO L137 encePairwiseOnDemand]: 260/267 looper letters, 807 selfloop transitions, 95 changer transitions 27/945 dead transitions. [2023-01-28 10:59:06,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 945 transitions, 14943 flow [2023-01-28 10:59:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:59:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:59:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 963 transitions. [2023-01-28 10:59:06,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40074906367041196 [2023-01-28 10:59:06,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 963 transitions. [2023-01-28 10:59:06,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 963 transitions. [2023-01-28 10:59:06,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:06,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 963 transitions. [2023-01-28 10:59:06,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:06,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:06,490 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:06,490 INFO L175 Difference]: Start difference. First operand has 276 places, 938 transitions, 14282 flow. Second operand 9 states and 963 transitions. [2023-01-28 10:59:06,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 945 transitions, 14943 flow [2023-01-28 10:59:07,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 945 transitions, 14760 flow, removed 89 selfloop flow, removed 8 redundant places. [2023-01-28 10:59:07,537 INFO L231 Difference]: Finished difference. Result has 270 places, 682 transitions, 10231 flow [2023-01-28 10:59:07,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10197, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10231, PETRI_PLACES=270, PETRI_TRANSITIONS=682} [2023-01-28 10:59:07,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2023-01-28 10:59:07,538 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 682 transitions, 10231 flow [2023-01-28 10:59:07,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 101.4) internal successors, (1521), 15 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:07,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:07,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:07,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:07,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 10:59:07,744 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)] === [2023-01-28 10:59:07,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash 86136784, now seen corresponding path program 9 times [2023-01-28 10:59:07,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:07,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287895283] [2023-01-28 10:59:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287895283] [2023-01-28 10:59:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287895283] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498199127] [2023-01-28 10:59:07,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:59:07,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:07,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:07,821 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) [2023-01-28 10:59:07,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 10:59:07,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:59:07,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:07,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:59:07,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:07,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:08,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498199127] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:08,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:08,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 10:59:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173593910] [2023-01-28 10:59:08,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:08,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 10:59:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:08,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 10:59:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-01-28 10:59:08,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-28 10:59:08,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 682 transitions, 10231 flow. Second operand has 14 states, 14 states have (on average 107.5) internal successors, (1505), 14 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:08,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:08,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-28 10:59:08,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:09,706 INFO L130 PetriNetUnfolder]: 4170/7151 cut-off events. [2023-01-28 10:59:09,706 INFO L131 PetriNetUnfolder]: For 124042/125155 co-relation queries the response was YES. [2023-01-28 10:59:09,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50738 conditions, 7151 events. 4170/7151 cut-off events. For 124042/125155 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 51186 event pairs, 958 based on Foata normal form. 846/7770 useless extension candidates. Maximal degree in co-relation 50627. Up to 4054 conditions per place. [2023-01-28 10:59:09,760 INFO L137 encePairwiseOnDemand]: 261/267 looper letters, 464 selfloop transitions, 27 changer transitions 32/611 dead transitions. [2023-01-28 10:59:09,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 611 transitions, 10312 flow [2023-01-28 10:59:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:59:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:59:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 909 transitions. [2023-01-28 10:59:09,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425561797752809 [2023-01-28 10:59:09,761 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 909 transitions. [2023-01-28 10:59:09,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 909 transitions. [2023-01-28 10:59:09,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:09,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 909 transitions. [2023-01-28 10:59:09,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:09,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:09,778 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:09,778 INFO L175 Difference]: Start difference. First operand has 270 places, 682 transitions, 10231 flow. Second operand 8 states and 909 transitions. [2023-01-28 10:59:09,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 611 transitions, 10312 flow [2023-01-28 10:59:10,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 611 transitions, 9957 flow, removed 133 selfloop flow, removed 18 redundant places. [2023-01-28 10:59:10,193 INFO L231 Difference]: Finished difference. Result has 244 places, 513 transitions, 7866 flow [2023-01-28 10:59:10,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7998, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7866, PETRI_PLACES=244, PETRI_TRANSITIONS=513} [2023-01-28 10:59:10,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2023-01-28 10:59:10,194 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 513 transitions, 7866 flow [2023-01-28 10:59:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 107.5) internal successors, (1505), 14 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:10,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:10,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:10,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:10,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 10:59:10,399 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)] === [2023-01-28 10:59:10,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1080724745, now seen corresponding path program 10 times [2023-01-28 10:59:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:10,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235902533] [2023-01-28 10:59:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:10,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235902533] [2023-01-28 10:59:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235902533] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206017687] [2023-01-28 10:59:10,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:59:10,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:10,504 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) [2023-01-28 10:59:10,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 10:59:10,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:59:10,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:10,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 10:59:10,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:10,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:10,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206017687] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:10,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:10,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2023-01-28 10:59:10,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027412945] [2023-01-28 10:59:10,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:10,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 10:59:10,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:10,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 10:59:10,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-01-28 10:59:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:10,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 513 transitions, 7866 flow. Second operand has 16 states, 16 states have (on average 101.0) internal successors, (1616), 16 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:10,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:10,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:10,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:11,900 INFO L130 PetriNetUnfolder]: 3150/5444 cut-off events. [2023-01-28 10:59:11,901 INFO L131 PetriNetUnfolder]: For 84411/84835 co-relation queries the response was YES. [2023-01-28 10:59:11,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38683 conditions, 5444 events. 3150/5444 cut-off events. For 84411/84835 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37278 event pairs, 419 based on Foata normal form. 524/5933 useless extension candidates. Maximal degree in co-relation 38584. Up to 1437 conditions per place. [2023-01-28 10:59:11,938 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 261 selfloop transitions, 120 changer transitions 229/622 dead transitions. [2023-01-28 10:59:11,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 622 transitions, 10184 flow [2023-01-28 10:59:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 10:59:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 10:59:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1993 transitions. [2023-01-28 10:59:11,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3928641829292332 [2023-01-28 10:59:11,940 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1993 transitions. [2023-01-28 10:59:11,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1993 transitions. [2023-01-28 10:59:11,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:11,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1993 transitions. [2023-01-28 10:59:11,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 104.89473684210526) internal successors, (1993), 19 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) [2023-01-28 10:59:11,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 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) [2023-01-28 10:59:11,945 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 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) [2023-01-28 10:59:11,945 INFO L175 Difference]: Start difference. First operand has 244 places, 513 transitions, 7866 flow. Second operand 19 states and 1993 transitions. [2023-01-28 10:59:11,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 622 transitions, 10184 flow [2023-01-28 10:59:12,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 622 transitions, 9810 flow, removed 66 selfloop flow, removed 14 redundant places. [2023-01-28 10:59:12,256 INFO L231 Difference]: Finished difference. Result has 243 places, 333 transitions, 4440 flow [2023-01-28 10:59:12,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7277, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4440, PETRI_PLACES=243, PETRI_TRANSITIONS=333} [2023-01-28 10:59:12,256 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-01-28 10:59:12,256 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 333 transitions, 4440 flow [2023-01-28 10:59:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 101.0) internal successors, (1616), 16 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:12,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:12,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:12,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:12,463 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,SelfDestructingSolverStorable13 [2023-01-28 10:59:12,463 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)] === [2023-01-28 10:59:12,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2111383135, now seen corresponding path program 11 times [2023-01-28 10:59:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942004031] [2023-01-28 10:59:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942004031] [2023-01-28 10:59:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942004031] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166294007] [2023-01-28 10:59:12,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:59:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:12,645 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) [2023-01-28 10:59:12,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 10:59:12,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:59:12,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:12,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:59:12,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:12,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166294007] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:12,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-01-28 10:59:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531223214] [2023-01-28 10:59:12,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:12,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 10:59:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:12,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 10:59:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-01-28 10:59:12,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 10:59:12,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 333 transitions, 4440 flow. Second operand has 19 states, 19 states have (on average 97.42105263157895) internal successors, (1851), 19 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:12,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:12,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 10:59:12,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:14,547 INFO L130 PetriNetUnfolder]: 3075/4688 cut-off events. [2023-01-28 10:59:14,548 INFO L131 PetriNetUnfolder]: For 72109/72109 co-relation queries the response was YES. [2023-01-28 10:59:14,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37275 conditions, 4688 events. 3075/4688 cut-off events. For 72109/72109 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 24248 event pairs, 160 based on Foata normal form. 28/4716 useless extension candidates. Maximal degree in co-relation 37198. Up to 1638 conditions per place. [2023-01-28 10:59:14,587 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 423 selfloop transitions, 383 changer transitions 0/806 dead transitions. [2023-01-28 10:59:14,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 806 transitions, 12145 flow [2023-01-28 10:59:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-01-28 10:59:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-01-28 10:59:14,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4674 transitions. [2023-01-28 10:59:14,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805569125549585 [2023-01-28 10:59:14,591 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4674 transitions. [2023-01-28 10:59:14,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4674 transitions. [2023-01-28 10:59:14,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:14,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4674 transitions. [2023-01-28 10:59:14,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 101.6086956521739) internal successors, (4674), 46 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:14,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:14,602 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 267.0) internal successors, (12549), 47 states have internal predecessors, (12549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:14,602 INFO L175 Difference]: Start difference. First operand has 243 places, 333 transitions, 4440 flow. Second operand 46 states and 4674 transitions. [2023-01-28 10:59:14,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 806 transitions, 12145 flow [2023-01-28 10:59:14,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 806 transitions, 10539 flow, removed 582 selfloop flow, removed 24 redundant places. [2023-01-28 10:59:14,841 INFO L231 Difference]: Finished difference. Result has 224 places, 547 transitions, 8071 flow [2023-01-28 10:59:14,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3808, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8071, PETRI_PLACES=224, PETRI_TRANSITIONS=547} [2023-01-28 10:59:14,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2023-01-28 10:59:14,842 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 547 transitions, 8071 flow [2023-01-28 10:59:14,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 97.42105263157895) internal successors, (1851), 19 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:14,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:14,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:14,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 10:59:15,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:15,047 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)] === [2023-01-28 10:59:15,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:15,047 INFO L85 PathProgramCache]: Analyzing trace with hash 41038503, now seen corresponding path program 12 times [2023-01-28 10:59:15,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:15,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500448795] [2023-01-28 10:59:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:15,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:15,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500448795] [2023-01-28 10:59:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500448795] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97975778] [2023-01-28 10:59:15,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:59:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:15,145 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) [2023-01-28 10:59:15,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 10:59:15,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 10:59:15,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:15,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:59:15,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:15,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:15,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97975778] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:15,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:15,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 10:59:15,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790658855] [2023-01-28 10:59:15,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:15,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 10:59:15,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:15,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 10:59:15,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-28 10:59:15,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:15,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 547 transitions, 8071 flow. Second operand has 19 states, 19 states have (on average 100.15789473684211) internal successors, (1903), 19 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:15,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:15,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:15,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:16,224 INFO L130 PetriNetUnfolder]: 3037/4634 cut-off events. [2023-01-28 10:59:16,224 INFO L131 PetriNetUnfolder]: For 88737/88761 co-relation queries the response was YES. [2023-01-28 10:59:16,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38888 conditions, 4634 events. 3037/4634 cut-off events. For 88737/88761 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24235 event pairs, 447 based on Foata normal form. 68/4684 useless extension candidates. Maximal degree in co-relation 38810. Up to 2265 conditions per place. [2023-01-28 10:59:16,264 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 499 selfloop transitions, 155 changer transitions 0/681 dead transitions. [2023-01-28 10:59:16,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 681 transitions, 11373 flow [2023-01-28 10:59:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:59:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:59:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-01-28 10:59:16,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953391593841032 [2023-01-28 10:59:16,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-01-28 10:59:16,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-01-28 10:59:16,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:16,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-01-28 10:59:16,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:16,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:16,268 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:16,268 INFO L175 Difference]: Start difference. First operand has 224 places, 547 transitions, 8071 flow. Second operand 9 states and 950 transitions. [2023-01-28 10:59:16,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 681 transitions, 11373 flow [2023-01-28 10:59:16,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 681 transitions, 10251 flow, removed 552 selfloop flow, removed 7 redundant places. [2023-01-28 10:59:16,637 INFO L231 Difference]: Finished difference. Result has 221 places, 536 transitions, 7763 flow [2023-01-28 10:59:16,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6875, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7763, PETRI_PLACES=221, PETRI_TRANSITIONS=536} [2023-01-28 10:59:16,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2023-01-28 10:59:16,638 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 536 transitions, 7763 flow [2023-01-28 10:59:16,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.15789473684211) internal successors, (1903), 19 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:16,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:16,638 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:16,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 10:59:16,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 10:59:16,839 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)] === [2023-01-28 10:59:16,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash 594494739, now seen corresponding path program 13 times [2023-01-28 10:59:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:16,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463588046] [2023-01-28 10:59:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463588046] [2023-01-28 10:59:16,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463588046] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829650324] [2023-01-28 10:59:16,938 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:59:16,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:16,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:16,940 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) [2023-01-28 10:59:16,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 10:59:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:17,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:59:17,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:17,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:17,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829650324] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:17,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:17,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-28 10:59:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975586880] [2023-01-28 10:59:17,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:17,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 10:59:17,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 10:59:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-28 10:59:17,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:17,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 536 transitions, 7763 flow. Second operand has 21 states, 21 states have (on average 99.85714285714286) internal successors, (2097), 21 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:17,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:17,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:17,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:18,251 INFO L130 PetriNetUnfolder]: 3160/4855 cut-off events. [2023-01-28 10:59:18,251 INFO L131 PetriNetUnfolder]: For 94953/94996 co-relation queries the response was YES. [2023-01-28 10:59:18,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40294 conditions, 4855 events. 3160/4855 cut-off events. For 94953/94996 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 25936 event pairs, 446 based on Foata normal form. 51/4893 useless extension candidates. Maximal degree in co-relation 40216. Up to 2278 conditions per place. [2023-01-28 10:59:18,293 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 487 selfloop transitions, 235 changer transitions 0/749 dead transitions. [2023-01-28 10:59:18,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 749 transitions, 11740 flow [2023-01-28 10:59:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 10:59:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 10:59:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1487 transitions. [2023-01-28 10:59:18,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39780631353665064 [2023-01-28 10:59:18,309 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1487 transitions. [2023-01-28 10:59:18,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1487 transitions. [2023-01-28 10:59:18,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:18,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1487 transitions. [2023-01-28 10:59:18,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.21428571428571) internal successors, (1487), 14 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:18,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:18,313 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:18,313 INFO L175 Difference]: Start difference. First operand has 221 places, 536 transitions, 7763 flow. Second operand 14 states and 1487 transitions. [2023-01-28 10:59:18,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 749 transitions, 11740 flow [2023-01-28 10:59:18,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 749 transitions, 11436 flow, removed 79 selfloop flow, removed 6 redundant places. [2023-01-28 10:59:18,745 INFO L231 Difference]: Finished difference. Result has 233 places, 603 transitions, 9385 flow [2023-01-28 10:59:18,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7528, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9385, PETRI_PLACES=233, PETRI_TRANSITIONS=603} [2023-01-28 10:59:18,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-01-28 10:59:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 603 transitions, 9385 flow [2023-01-28 10:59:18,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.85714285714286) internal successors, (2097), 21 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:18,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:18,746 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:18,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:18,951 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,SelfDestructingSolverStorable16 [2023-01-28 10:59:18,951 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)] === [2023-01-28 10:59:18,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1361094559, now seen corresponding path program 14 times [2023-01-28 10:59:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283712313] [2023-01-28 10:59:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:19,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283712313] [2023-01-28 10:59:19,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283712313] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:19,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805495560] [2023-01-28 10:59:19,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:59:19,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:19,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:19,049 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) [2023-01-28 10:59:19,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 10:59:19,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:59:19,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:19,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:59:19,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:19,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:19,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805495560] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:19,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 10:59:19,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822313355] [2023-01-28 10:59:19,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:19,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 10:59:19,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 10:59:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-01-28 10:59:19,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:19,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 603 transitions, 9385 flow. Second operand has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:19,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:19,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:19,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:20,343 INFO L130 PetriNetUnfolder]: 3122/4778 cut-off events. [2023-01-28 10:59:20,344 INFO L131 PetriNetUnfolder]: For 83023/83067 co-relation queries the response was YES. [2023-01-28 10:59:20,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39796 conditions, 4778 events. 3122/4778 cut-off events. For 83023/83067 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 25297 event pairs, 499 based on Foata normal form. 57/4826 useless extension candidates. Maximal degree in co-relation 39715. Up to 2395 conditions per place. [2023-01-28 10:59:20,382 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 484 selfloop transitions, 168 changer transitions 0/679 dead transitions. [2023-01-28 10:59:20,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 679 transitions, 11460 flow [2023-01-28 10:59:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:59:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:59:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-01-28 10:59:20,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953391593841032 [2023-01-28 10:59:20,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-01-28 10:59:20,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-01-28 10:59:20,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:20,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-01-28 10:59:20,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:20,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:20,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:20,386 INFO L175 Difference]: Start difference. First operand has 233 places, 603 transitions, 9385 flow. Second operand 9 states and 950 transitions. [2023-01-28 10:59:20,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 679 transitions, 11460 flow [2023-01-28 10:59:20,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 679 transitions, 11048 flow, removed 133 selfloop flow, removed 6 redundant places. [2023-01-28 10:59:20,745 INFO L231 Difference]: Finished difference. Result has 233 places, 598 transitions, 9265 flow [2023-01-28 10:59:20,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8770, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9265, PETRI_PLACES=233, PETRI_TRANSITIONS=598} [2023-01-28 10:59:20,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-01-28 10:59:20,746 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 598 transitions, 9265 flow [2023-01-28 10:59:20,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:20,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:20,746 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:20,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:20,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 10:59:20,951 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)] === [2023-01-28 10:59:20,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash 649905999, now seen corresponding path program 15 times [2023-01-28 10:59:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:20,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420685669] [2023-01-28 10:59:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:20,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:21,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:21,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420685669] [2023-01-28 10:59:21,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420685669] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:21,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895487412] [2023-01-28 10:59:21,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:59:21,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:21,059 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) [2023-01-28 10:59:21,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 10:59:21,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:59:21,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:21,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:59:21,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:21,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:21,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895487412] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:21,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:21,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-01-28 10:59:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683277500] [2023-01-28 10:59:21,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:21,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:59:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:59:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-01-28 10:59:21,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:21,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 598 transitions, 9265 flow. Second operand has 22 states, 22 states have (on average 99.81818181818181) internal successors, (2196), 22 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:21,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:21,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:21,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:22,314 INFO L130 PetriNetUnfolder]: 3089/4714 cut-off events. [2023-01-28 10:59:22,314 INFO L131 PetriNetUnfolder]: For 75240/75287 co-relation queries the response was YES. [2023-01-28 10:59:22,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38909 conditions, 4714 events. 3089/4714 cut-off events. For 75240/75287 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24729 event pairs, 460 based on Foata normal form. 49/4750 useless extension candidates. Maximal degree in co-relation 38829. Up to 2278 conditions per place. [2023-01-28 10:59:22,351 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 435 selfloop transitions, 226 changer transitions 0/688 dead transitions. [2023-01-28 10:59:22,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 688 transitions, 11496 flow [2023-01-28 10:59:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 10:59:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 10:59:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1059 transitions. [2023-01-28 10:59:22,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39662921348314606 [2023-01-28 10:59:22,353 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1059 transitions. [2023-01-28 10:59:22,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1059 transitions. [2023-01-28 10:59:22,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:22,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1059 transitions. [2023-01-28 10:59:22,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.9) internal successors, (1059), 10 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:22,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:22,363 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:22,363 INFO L175 Difference]: Start difference. First operand has 233 places, 598 transitions, 9265 flow. Second operand 10 states and 1059 transitions. [2023-01-28 10:59:22,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 688 transitions, 11496 flow [2023-01-28 10:59:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 688 transitions, 11306 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-01-28 10:59:22,681 INFO L231 Difference]: Finished difference. Result has 235 places, 597 transitions, 9515 flow [2023-01-28 10:59:22,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9063, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9515, PETRI_PLACES=235, PETRI_TRANSITIONS=597} [2023-01-28 10:59:22,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2023-01-28 10:59:22,682 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 597 transitions, 9515 flow [2023-01-28 10:59:22,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 99.81818181818181) internal successors, (2196), 22 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:22,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:22,682 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:22,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:22,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:22,887 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)] === [2023-01-28 10:59:22,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:22,887 INFO L85 PathProgramCache]: Analyzing trace with hash 602700803, now seen corresponding path program 16 times [2023-01-28 10:59:22,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:22,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570373893] [2023-01-28 10:59:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:22,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:22,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570373893] [2023-01-28 10:59:22,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570373893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:22,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128007360] [2023-01-28 10:59:22,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:59:22,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:22,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:23,006 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) [2023-01-28 10:59:23,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 10:59:23,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:59:23,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:23,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:59:23,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:23,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:23,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128007360] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:23,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:23,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-01-28 10:59:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501045975] [2023-01-28 10:59:23,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:23,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 10:59:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 10:59:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-01-28 10:59:23,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 10:59:23,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 597 transitions, 9515 flow. Second operand has 18 states, 18 states have (on average 97.5) internal successors, (1755), 18 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:23,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:23,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 10:59:23,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:24,489 INFO L130 PetriNetUnfolder]: 3108/4717 cut-off events. [2023-01-28 10:59:24,490 INFO L131 PetriNetUnfolder]: For 80236/80236 co-relation queries the response was YES. [2023-01-28 10:59:24,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39590 conditions, 4717 events. 3108/4717 cut-off events. For 80236/80236 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24340 event pairs, 307 based on Foata normal form. 26/4743 useless extension candidates. Maximal degree in co-relation 39510. Up to 2787 conditions per place. [2023-01-28 10:59:24,531 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 434 selfloop transitions, 271 changer transitions 0/705 dead transitions. [2023-01-28 10:59:24,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 705 transitions, 12188 flow [2023-01-28 10:59:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 10:59:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 10:59:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1926 transitions. [2023-01-28 10:59:24,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37965700768775873 [2023-01-28 10:59:24,533 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1926 transitions. [2023-01-28 10:59:24,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1926 transitions. [2023-01-28 10:59:24,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:24,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1926 transitions. [2023-01-28 10:59:24,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.36842105263158) internal successors, (1926), 19 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:24,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 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) [2023-01-28 10:59:24,538 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 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) [2023-01-28 10:59:24,538 INFO L175 Difference]: Start difference. First operand has 235 places, 597 transitions, 9515 flow. Second operand 19 states and 1926 transitions. [2023-01-28 10:59:24,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 705 transitions, 12188 flow [2023-01-28 10:59:24,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 705 transitions, 11575 flow, removed 27 selfloop flow, removed 10 redundant places. [2023-01-28 10:59:24,899 INFO L231 Difference]: Finished difference. Result has 246 places, 600 transitions, 9582 flow [2023-01-28 10:59:24,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8897, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9582, PETRI_PLACES=246, PETRI_TRANSITIONS=600} [2023-01-28 10:59:24,900 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2023-01-28 10:59:24,900 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 600 transitions, 9582 flow [2023-01-28 10:59:24,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.5) internal successors, (1755), 18 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:24,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:24,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:24,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:25,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:25,111 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)] === [2023-01-28 10:59:25,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1056236593, now seen corresponding path program 17 times [2023-01-28 10:59:25,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:25,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432274133] [2023-01-28 10:59:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:25,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432274133] [2023-01-28 10:59:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432274133] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:25,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107194685] [2023-01-28 10:59:25,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:59:25,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:25,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:25,211 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) [2023-01-28 10:59:25,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 10:59:25,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 10:59:25,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:25,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 10:59:25,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:25,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107194685] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:25,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-01-28 10:59:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544653690] [2023-01-28 10:59:25,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 10:59:25,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 10:59:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-01-28 10:59:25,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 10:59:25,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 600 transitions, 9582 flow. Second operand has 20 states, 20 states have (on average 97.6) internal successors, (1952), 20 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:25,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:25,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 10:59:25,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:26,957 INFO L130 PetriNetUnfolder]: 3402/5151 cut-off events. [2023-01-28 10:59:26,957 INFO L131 PetriNetUnfolder]: For 79009/79009 co-relation queries the response was YES. [2023-01-28 10:59:26,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41720 conditions, 5151 events. 3402/5151 cut-off events. For 79009/79009 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26876 event pairs, 317 based on Foata normal form. 24/5175 useless extension candidates. Maximal degree in co-relation 41637. Up to 2791 conditions per place. [2023-01-28 10:59:27,003 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 480 selfloop transitions, 326 changer transitions 0/806 dead transitions. [2023-01-28 10:59:27,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 806 transitions, 13542 flow [2023-01-28 10:59:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 10:59:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 10:59:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2550 transitions. [2023-01-28 10:59:27,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38202247191011235 [2023-01-28 10:59:27,005 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2550 transitions. [2023-01-28 10:59:27,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2550 transitions. [2023-01-28 10:59:27,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:27,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2550 transitions. [2023-01-28 10:59:27,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 102.0) internal successors, (2550), 25 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:27,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:27,011 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:27,011 INFO L175 Difference]: Start difference. First operand has 246 places, 600 transitions, 9582 flow. Second operand 25 states and 2550 transitions. [2023-01-28 10:59:27,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 806 transitions, 13542 flow [2023-01-28 10:59:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 806 transitions, 13127 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-01-28 10:59:27,379 INFO L231 Difference]: Finished difference. Result has 266 places, 649 transitions, 10693 flow [2023-01-28 10:59:27,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=9175, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10693, PETRI_PLACES=266, PETRI_TRANSITIONS=649} [2023-01-28 10:59:27,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2023-01-28 10:59:27,380 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 649 transitions, 10693 flow [2023-01-28 10:59:27,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.6) internal successors, (1952), 20 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:27,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:27,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:27,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:27,585 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,SelfDestructingSolverStorable20 [2023-01-28 10:59:27,585 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)] === [2023-01-28 10:59:27,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1770876167, now seen corresponding path program 18 times [2023-01-28 10:59:27,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:27,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189164503] [2023-01-28 10:59:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:27,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:27,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:27,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189164503] [2023-01-28 10:59:27,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189164503] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:27,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184634935] [2023-01-28 10:59:27,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:59:27,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:27,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:27,702 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) [2023-01-28 10:59:27,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 10:59:27,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 10:59:27,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:27,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:59:27,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:27,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:59:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184634935] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:28,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:28,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-01-28 10:59:28,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075960498] [2023-01-28 10:59:28,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:28,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:59:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:59:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-01-28 10:59:28,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:28,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 649 transitions, 10693 flow. Second operand has 22 states, 22 states have (on average 100.0909090909091) internal successors, (2202), 22 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:28,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:28,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:28,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:29,366 INFO L130 PetriNetUnfolder]: 3324/5055 cut-off events. [2023-01-28 10:59:29,367 INFO L131 PetriNetUnfolder]: For 82166/82215 co-relation queries the response was YES. [2023-01-28 10:59:29,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41727 conditions, 5055 events. 3324/5055 cut-off events. For 82166/82215 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26646 event pairs, 346 based on Foata normal form. 48/5091 useless extension candidates. Maximal degree in co-relation 41635. Up to 1858 conditions per place. [2023-01-28 10:59:29,420 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 381 selfloop transitions, 375 changer transitions 0/789 dead transitions. [2023-01-28 10:59:29,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 789 transitions, 13533 flow [2023-01-28 10:59:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 10:59:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 10:59:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1603 transitions. [2023-01-28 10:59:29,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002496878901373 [2023-01-28 10:59:29,423 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1603 transitions. [2023-01-28 10:59:29,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1603 transitions. [2023-01-28 10:59:29,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:29,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1603 transitions. [2023-01-28 10:59:29,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.86666666666666) internal successors, (1603), 15 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:29,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 267.0) internal successors, (4272), 16 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:29,426 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 267.0) internal successors, (4272), 16 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:29,427 INFO L175 Difference]: Start difference. First operand has 266 places, 649 transitions, 10693 flow. Second operand 15 states and 1603 transitions. [2023-01-28 10:59:29,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 789 transitions, 13533 flow [2023-01-28 10:59:29,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 789 transitions, 13130 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-01-28 10:59:29,841 INFO L231 Difference]: Finished difference. Result has 268 places, 653 transitions, 11136 flow [2023-01-28 10:59:29,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11136, PETRI_PLACES=268, PETRI_TRANSITIONS=653} [2023-01-28 10:59:29,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2023-01-28 10:59:29,841 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 653 transitions, 11136 flow [2023-01-28 10:59:29,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 100.0909090909091) internal successors, (2202), 22 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:29,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:29,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:29,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-28 10:59:30,046 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,SelfDestructingSolverStorable21 [2023-01-28 10:59:30,046 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)] === [2023-01-28 10:59:30,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1819269899, now seen corresponding path program 19 times [2023-01-28 10:59:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651386917] [2023-01-28 10:59:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:30,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:30,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651386917] [2023-01-28 10:59:30,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651386917] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:30,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616949115] [2023-01-28 10:59:30,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:59:30,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:30,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:30,150 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) [2023-01-28 10:59:30,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 10:59:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:30,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 10:59:30,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:30,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:59:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616949115] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:59:30,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:59:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 10:59:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970851069] [2023-01-28 10:59:30,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:59:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 10:59:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:59:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 10:59:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-01-28 10:59:30,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 10:59:30,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 653 transitions, 11136 flow. Second operand has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:30,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:59:30,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 10:59:30,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:59:31,616 INFO L130 PetriNetUnfolder]: 3291/4990 cut-off events. [2023-01-28 10:59:31,616 INFO L131 PetriNetUnfolder]: For 85685/85734 co-relation queries the response was YES. [2023-01-28 10:59:31,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41954 conditions, 4990 events. 3291/4990 cut-off events. For 85685/85734 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 26132 event pairs, 406 based on Foata normal form. 48/5026 useless extension candidates. Maximal degree in co-relation 41862. Up to 1929 conditions per place. [2023-01-28 10:59:31,668 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 370 selfloop transitions, 308 changer transitions 0/710 dead transitions. [2023-01-28 10:59:31,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 710 transitions, 13031 flow [2023-01-28 10:59:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:59:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:59:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 949 transitions. [2023-01-28 10:59:31,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.394923012900541 [2023-01-28 10:59:31,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 949 transitions. [2023-01-28 10:59:31,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 949 transitions. [2023-01-28 10:59:31,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:59:31,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 949 transitions. [2023-01-28 10:59:31,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.44444444444444) internal successors, (949), 9 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:31,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:31,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:31,672 INFO L175 Difference]: Start difference. First operand has 268 places, 653 transitions, 11136 flow. Second operand 9 states and 949 transitions. [2023-01-28 10:59:31,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 710 transitions, 13031 flow [2023-01-28 10:59:32,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 710 transitions, 12319 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-01-28 10:59:32,085 INFO L231 Difference]: Finished difference. Result has 262 places, 645 transitions, 10943 flow [2023-01-28 10:59:32,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10327, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10943, PETRI_PLACES=262, PETRI_TRANSITIONS=645} [2023-01-28 10:59:32,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2023-01-28 10:59:32,086 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 645 transitions, 10943 flow [2023-01-28 10:59:32,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:59:32,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:59:32,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:59:32,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 10:59:32,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:32,294 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)] === [2023-01-28 10:59:32,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:59:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash -567491001, now seen corresponding path program 3 times [2023-01-28 10:59:32,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:59:32,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165642031] [2023-01-28 10:59:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:59:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:59:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:59:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:59:34,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:59:34,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165642031] [2023-01-28 10:59:34,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165642031] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:59:34,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841623908] [2023-01-28 10:59:34,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:59:34,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:59:34,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:59:34,049 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) [2023-01-28 10:59:34,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 10:59:34,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:59:34,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:59:34,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 10:59:34,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:59:34,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 10:59:34,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:59:34,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:59:34,747 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 90 treesize of output 72 [2023-01-28 10:59:34,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:59:34,932 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 90 treesize of output 72 [2023-01-28 10:59:35,758 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:59:35,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 147 treesize of output 89 [2023-01-28 10:59:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:59:36,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:59:41,536 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse11 (+ c_~min1~0 1))) (let ((.cse3 (< c_~min3~0 .cse11)) (.cse0 (< c_~min2~0 .cse11)) (.cse6 (and (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse27 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (or (< (select .cse27 c_~A~0.offset) c_~min2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse28 (select .cse27 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse28) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< .cse28 .cse11))))))) (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse29 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (or (< (select .cse29 c_~A~0.offset) c_~min2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse30 (select .cse29 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse30) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< .cse30 c_~min2~0))))))) (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse31 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (or (< (select .cse31 c_~A~0.offset) c_~min2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse32 (select .cse31 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse32) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= c_~min1~0 .cse32))))))))) (.cse1 (<= c_~min1~0 c_~min2~0)) (.cse5 (and (forall ((v_ArrVal_1088 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1089 (Array Int Int))) (let ((.cse22 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse21 (select .cse22 c_~A~0.offset))) (or (< .cse21 .cse11) (< (select .cse22 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))) c_~min3~0) (<= c_~min2~0 .cse21))))))) (forall ((v_ArrVal_1088 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (forall ((v_ArrVal_1089 (Array Int Int))) (let ((.cse24 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse23 (select .cse24 c_~A~0.offset))) (or (<= c_~min1~0 .cse23) (< (select .cse24 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))) c_~min3~0) (<= c_~min2~0 .cse23))))) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0))) (forall ((v_ArrVal_1088 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (forall ((v_ArrVal_1089 (Array Int Int))) (let ((.cse26 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse25 (select .cse26 c_~A~0.offset))) (or (<= .cse25 c_~min3~0) (< (select .cse26 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))) c_~min3~0) (<= c_~min2~0 .cse25))))) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0))))) (.cse4 (<= c_~min1~0 c_~min3~0))) (and (or (and (<= c_~min2~0 c_~min3~0) .cse0 .cse1) (forall ((v_ArrVal_1089 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int) (v_ArrVal_1088 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (or (< (select .cse2 c_~A~0.offset) c_~min2~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< (select .cse2 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))) c_~min3~0)))) (and .cse3 (< c_~min3~0 c_~min2~0) .cse4)) (or .cse5 .cse3) (or .cse6 .cse0) (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse8 (select .cse9 c_~A~0.offset))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse7 (select .cse9 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse7) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< .cse7 .cse8)))) (<= c_~min1~0 .cse8) (<= c_~min2~0 .cse8))))) (or .cse6 .cse1) (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse10 (select .cse13 c_~A~0.offset))) (or (< .cse10 .cse11) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse12 (select .cse13 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse12) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< .cse12 .cse11)))) (<= c_~min2~0 .cse10))))) (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse15 (select .cse16 c_~A~0.offset))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse14 (select .cse16 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse14) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse15 .cse14) (<= c_~min1~0 .cse14)))) (<= c_~min2~0 .cse15))))) (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1088 (Array Int Int))) (let ((.cse18 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse17 (select .cse18 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= c_~min3~0 .cse17) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= c_~min2~0 .cse17) (<= c_~min1~0 .cse17)))) (< (select .cse18 c_~A~0.offset) c_~min2~0)))) (forall ((v_ArrVal_1088 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (forall ((v_ArrVal_1089 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1088) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1089) c_~A~0.base))) (let ((.cse19 (select .cse20 c_~A~0.offset))) (or (< c_~min3~0 .cse19) (<= c_~min1~0 .cse19) (< (select .cse20 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))) c_~min3~0) (<= c_~min2~0 .cse19))))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0))) (or .cse5 .cse4)))) is different from false [2023-01-28 10:59:48,276 WARN L222 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:00:04,087 WARN L222 SmtUtils]: Spent 12.20s on a formula simplification that was a NOOP. DAG size: 224 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:00:18,675 WARN L222 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 221 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:06:13,416 WARN L222 SmtUtils]: Spent 5.65m on a formula simplification that was a NOOP. DAG size: 357 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:06:16,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:16,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 106 [2023-01-28 11:06:16,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:16,647 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 641 treesize of output 607 [2023-01-28 11:06:16,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:16,701 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 243 treesize of output 235 [2023-01-28 11:06:16,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:16,759 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 165 treesize of output 157 [2023-01-28 11:06:16,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:16,793 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 219 treesize of output 195 [2023-01-28 11:06:19,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 124 [2023-01-28 11:06:19,037 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:19,038 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:19,084 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-01-28 11:06:19,084 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 161 treesize of output 125 [2023-01-28 11:06:19,121 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-01-28 11:06:19,122 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 71 treesize of output 43 [2023-01-28 11:06:19,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 103 [2023-01-28 11:06:19,197 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:19,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:19,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,233 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 151 treesize of output 131 [2023-01-28 11:06:19,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,273 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 67 treesize of output 59 [2023-01-28 11:06:19,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 104 [2023-01-28 11:06:19,848 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:19,849 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:19,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,883 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 124 treesize of output 110 [2023-01-28 11:06:19,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:19,925 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 54 treesize of output 52 [2023-01-28 11:06:20,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 114 [2023-01-28 11:06:20,103 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,146 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-01-28 11:06:20,146 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 215 treesize of output 165 [2023-01-28 11:06:20,178 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-01-28 11:06:20,179 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 73 treesize of output 45 [2023-01-28 11:06:20,238 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:20,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 1 [2023-01-28 11:06:20,263 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:20,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 1 [2023-01-28 11:06:20,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 116 [2023-01-28 11:06:20,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,346 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 11:06:20,347 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 223 treesize of output 174 [2023-01-28 11:06:20,405 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:20,405 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 75 treesize of output 51 [2023-01-28 11:06:20,460 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:20,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 1 [2023-01-28 11:06:20,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 83 [2023-01-28 11:06:20,500 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,500 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,541 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 122 treesize of output 110 [2023-01-28 11:06:20,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,590 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 54 treesize of output 52 [2023-01-28 11:06:20,714 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:20,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 1 [2023-01-28 11:06:20,738 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:20,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 1 [2023-01-28 11:06:20,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 98 [2023-01-28 11:06:20,777 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,777 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:20,810 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:20,810 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 145 treesize of output 115 [2023-01-28 11:06:20,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:20,857 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 63 treesize of output 59 [2023-01-28 11:06:20,982 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:20,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 1 [2023-01-28 11:06:21,004 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 1 [2023-01-28 11:06:21,028 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 1 [2023-01-28 11:06:21,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:21,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 112 [2023-01-28 11:06:21,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,102 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 11:06:21,103 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 207 treesize of output 166 [2023-01-28 11:06:21,142 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:21,142 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 71 treesize of output 51 [2023-01-28 11:06:21,230 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 1 [2023-01-28 11:06:21,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:21,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 91 [2023-01-28 11:06:21,277 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,278 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,312 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:21,312 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 126 treesize of output 100 [2023-01-28 11:06:21,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:21,358 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 56 treesize of output 52 [2023-01-28 11:06:21,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:21,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 93 [2023-01-28 11:06:21,491 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,491 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,541 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 11:06:21,541 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 130 treesize of output 107 [2023-01-28 11:06:21,599 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:21,599 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 58 treesize of output 42 [2023-01-28 11:06:21,657 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 1 [2023-01-28 11:06:21,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:21,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 119 [2023-01-28 11:06:21,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:21,745 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 11:06:21,745 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 213 treesize of output 168 [2023-01-28 11:06:21,805 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:21,805 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 73 treesize of output 51 [2023-01-28 11:06:21,926 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 1 [2023-01-28 11:06:21,954 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 1 [2023-01-28 11:06:21,980 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:21,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-01-28 11:06:22,012 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-01-28 11:06:22,036 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-01-28 11:06:22,068 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 1 [2023-01-28 11:06:22,100 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 1 [2023-01-28 11:06:22,127 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 1 [2023-01-28 11:06:22,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:22,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 83 [2023-01-28 11:06:22,178 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:22,179 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:22,214 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:22,214 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 122 treesize of output 98 [2023-01-28 11:06:22,264 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:22,265 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 54 treesize of output 40 [2023-01-28 11:06:22,362 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 1 [2023-01-28 11:06:22,392 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-01-28 11:06:22,425 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 1 [2023-01-28 11:06:22,455 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 1 [2023-01-28 11:06:22,486 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 1 [2023-01-28 11:06:22,523 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 1 [2023-01-28 11:06:22,549 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 1 [2023-01-28 11:06:22,594 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 1 [2023-01-28 11:06:22,618 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 1 [2023-01-28 11:06:22,641 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 1 [2023-01-28 11:06:22,674 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 1 [2023-01-28 11:06:22,708 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 1 [2023-01-28 11:06:22,748 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 1 [2023-01-28 11:06:22,787 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 1 [2023-01-28 11:06:22,815 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 1 [2023-01-28 11:06:22,841 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 1 [2023-01-28 11:06:22,877 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 1 [2023-01-28 11:06:22,904 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:22,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 199 treesize of output 1 [2023-01-28 11:06:22,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:22,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 99 [2023-01-28 11:06:22,960 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:22,960 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:23,014 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 11:06:23,014 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 155 treesize of output 128 [2023-01-28 11:06:23,083 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:23,083 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 69 treesize of output 51 [2023-01-28 11:06:23,151 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 230 treesize of output 1 [2023-01-28 11:06:23,188 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 1 [2023-01-28 11:06:23,222 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 1 [2023-01-28 11:06:23,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:06:23,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 71 [2023-01-28 11:06:23,263 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:23,264 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 11:06:23,299 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:23,299 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 97 treesize of output 79 [2023-01-28 11:06:23,357 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 11:06:23,357 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 43 treesize of output 33 [2023-01-28 11:06:23,473 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 1 [2023-01-28 11:06:23,507 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 1 [2023-01-28 11:06:23,543 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 1 [2023-01-28 11:06:23,580 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 1 [2023-01-28 11:06:23,615 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 1 [2023-01-28 11:06:23,654 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 1 [2023-01-28 11:06:23,692 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 1 [2023-01-28 11:06:23,722 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 1 [2023-01-28 11:06:23,768 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 1 [2023-01-28 11:06:23,797 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 1 [2023-01-28 11:06:23,824 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 1 [2023-01-28 11:06:23,864 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 1 [2023-01-28 11:06:23,904 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 1 [2023-01-28 11:06:23,930 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 1 [2023-01-28 11:06:23,969 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 1 [2023-01-28 11:06:23,997 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:23,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 1 [2023-01-28 11:06:24,037 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 192 treesize of output 1 [2023-01-28 11:06:24,075 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 1 [2023-01-28 11:06:24,105 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 1 [2023-01-28 11:06:24,144 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 1 [2023-01-28 11:06:24,183 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 1 [2023-01-28 11:06:24,213 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 1 [2023-01-28 11:06:24,243 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 1 [2023-01-28 11:06:24,293 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 1 [2023-01-28 11:06:24,341 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 1 [2023-01-28 11:06:24,381 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 1 [2023-01-28 11:06:24,411 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 1 [2023-01-28 11:06:24,452 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 1 [2023-01-28 11:06:24,502 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 1 [2023-01-28 11:06:24,535 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 203 treesize of output 1 [2023-01-28 11:06:24,578 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 1 [2023-01-28 11:06:24,622 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 207 treesize of output 1 [2023-01-28 11:06:24,655 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 11:06:24,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 213 treesize of output 1 [2023-01-28 11:06:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:06:25,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841623908] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:06:25,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:06:25,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2023-01-28 11:06:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607803615] [2023-01-28 11:06:25,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:06:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-01-28 11:06:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:06:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-01-28 11:06:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1378, Unknown=18, NotChecked=76, Total=1640 [2023-01-28 11:06:25,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-28 11:06:25,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 645 transitions, 10943 flow. Second operand has 41 states, 41 states have (on average 70.82926829268293) internal successors, (2904), 41 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 11:06:25,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:06:25,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-28 11:06:25,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:06:31,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:12,264 WARN L222 SmtUtils]: Spent 25.62s on a formula simplification. DAG size of input: 370 DAG size of output: 140 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:07:32,471 WARN L222 SmtUtils]: Spent 17.15s on a formula simplification. DAG size of input: 281 DAG size of output: 108 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:07:39,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:41,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:45,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:47,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:49,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:51,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:54,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:55,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:07:57,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:08:00,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:08:03,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:08:10,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:08:12,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-01-28 11:12:27,893 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 [2023-01-28 11:12:27,893 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:12:28,669 WARN L238 SmtUtils]: Removed 25 from assertion stack [2023-01-28 11:12:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 11:12:28,670 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 11:12:28,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-01-28 11:12:28,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:12:28,871 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 415 for 245879ms.. [2023-01-28 11:12:28,872 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 11:12:28,872 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 11:12:28,872 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 11:12:28,872 INFO L445 BasicCegarLoop]: Path program histogram: [19, 3, 1, 1] [2023-01-28 11:12:28,875 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:12:28,875 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:12:28,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:12:28 BasicIcfg [2023-01-28 11:12:28,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:12:28,877 INFO L158 Benchmark]: Toolchain (without parser) took 866670.85ms. Allocated memory was 360.7MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 321.1MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-01-28 11:12:28,877 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 309.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:12:28,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.85ms. Allocated memory is still 360.7MB. Free memory was 320.9MB in the beginning and 309.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:12:28,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.96ms. Allocated memory is still 360.7MB. Free memory was 308.5MB in the beginning and 307.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:12:28,877 INFO L158 Benchmark]: Boogie Preprocessor took 19.57ms. Allocated memory is still 360.7MB. Free memory was 307.4MB in the beginning and 305.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:12:28,877 INFO L158 Benchmark]: RCFGBuilder took 403.17ms. Allocated memory is still 360.7MB. Free memory was 305.3MB in the beginning and 284.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 11:12:28,878 INFO L158 Benchmark]: TraceAbstraction took 866013.62ms. Allocated memory was 360.7MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 283.4MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-01-28 11:12:28,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 309.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 188.85ms. Allocated memory is still 360.7MB. Free memory was 320.9MB in the beginning and 309.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.96ms. Allocated memory is still 360.7MB. Free memory was 308.5MB in the beginning and 307.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.57ms. Allocated memory is still 360.7MB. Free memory was 307.4MB in the beginning and 305.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 403.17ms. Allocated memory is still 360.7MB. Free memory was 305.3MB in the beginning and 284.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 866013.62ms. Allocated memory was 360.7MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 283.4MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 130 PlacesBefore, 30 PlacesAfterwards, 132 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 122 TotalNumberOfCompositions, 1523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1404, independent conditional: 0, independent unconditional: 1404, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 717, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 696, independent conditional: 0, independent unconditional: 696, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 717, unknown conditional: 0, unknown unconditional: 717] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 415 for 245879ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 415 for 245879ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 415 for 245879ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 415 for 245879ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 164 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: 865.9s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 419.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 4060 SdHoareTripleChecker+Valid, 56.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4060 mSDsluCounter, 1085 SdHoareTripleChecker+Invalid, 53.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 634 IncrementalHoareTripleChecker+Unchecked, 951 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15391 IncrementalHoareTripleChecker+Invalid, 16240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 134 mSDtfsCounter, 15391 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1595 GetRequests, 801 SyntacticMatches, 44 SemanticMatches, 749 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 6935 ImplicationChecksByTransitivity, 453.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16228occurred in iteration=10, InterpolantAutomatonStates: 408, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 435.0s InterpolantComputationTime, 1128 NumberOfCodeBlocks, 1117 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1612 ConstructedInterpolants, 38 QuantifiedInterpolants, 62560 SizeOfPredicates, 251 NumberOfNonLiveVariables, 4962 ConjunctsInSsa, 455 ConjunctsInUnsatCore, 70 InterpolantComputations, 2 PerfectInterpolantSequences, 156/351 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