/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/unroll-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:03:28,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:03:28,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:03:28,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:03:28,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:03:28,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:03:28,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:03:28,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:03:28,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:03:28,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:03:28,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:03:28,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:03:28,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:03:28,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:03:28,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:03:28,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:03:28,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:03:28,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:03:28,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:03:28,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:03:28,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:03:28,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:03:28,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:03:28,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:03:28,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:03:28,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:03:28,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:03:28,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:03:28,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:03:28,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:03:28,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:03:28,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:03:28,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:03:28,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:03:28,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:03:28,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:03:28,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:03:28,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:03:28,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:03:28,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:03:28,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:03:28,694 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 12:03:28,725 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:03:28,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:03:28,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:03:28,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:03:28,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:03:28,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:03:28,728 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:03:28,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:03:28,728 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:03:28,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:03:28,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:03:28,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:03:28,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:03:28,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:03:28,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:03:28,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:03:28,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:03:28,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:03:28,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:03:28,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:03:28,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:03:28,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:03:28,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:03:28,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:03:28,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:03:28,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:03:28,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:03:28,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:03:28,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:03:28,954 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:03:28,955 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:03:28,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-01-28 12:03:29,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:03:30,176 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:03:30,176 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2023-01-28 12:03:30,182 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9b95444/753f33ac7c764de29f036ea45e0c59f8/FLAGc0edb5899 [2023-01-28 12:03:30,200 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9b95444/753f33ac7c764de29f036ea45e0c59f8 [2023-01-28 12:03:30,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:03:30,204 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:03:30,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:03:30,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:03:30,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:03:30,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b05a359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30, skipping insertion in model container [2023-01-28 12:03:30,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:03:30,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:03:30,367 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/unroll-4.wvr.c[2572,2585] [2023-01-28 12:03:30,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:03:30,380 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:03:30,397 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/unroll-4.wvr.c[2572,2585] [2023-01-28 12:03:30,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:03:30,411 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:03:30,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30 WrapperNode [2023-01-28 12:03:30,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:03:30,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:03:30,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:03:30,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:03:30,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,444 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 157 [2023-01-28 12:03:30,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:03:30,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:03:30,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:03:30,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:03:30,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:03:30,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:03:30,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:03:30,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:03:30,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (1/1) ... [2023-01-28 12:03:30,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:03:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:30,502 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 12:03:30,506 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 12:03:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:03:30,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:03:30,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 12:03:30,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:03:30,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:03:30,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:03:30,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:03:30,544 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 12:03:30,657 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:03:30,659 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:03:30,976 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:03:30,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:03:30,985 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 12:03:30,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:03:30 BoogieIcfgContainer [2023-01-28 12:03:30,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:03:30,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:03:30,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:03:30,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:03:30,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:03:30" (1/3) ... [2023-01-28 12:03:30,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeb16f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:03:30, skipping insertion in model container [2023-01-28 12:03:30,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:03:30" (2/3) ... [2023-01-28 12:03:30,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeb16f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:03:30, skipping insertion in model container [2023-01-28 12:03:30,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:03:30" (3/3) ... [2023-01-28 12:03:30,998 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2023-01-28 12:03:31,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:03:31,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:03:31,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:03:31,145 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:03:31,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 183 transitions, 382 flow [2023-01-28 12:03:31,290 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2023-01-28 12:03:31,290 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:03:31,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 16/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-01-28 12:03:31,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 183 transitions, 382 flow [2023-01-28 12:03:31,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 173 transitions, 358 flow [2023-01-28 12:03:31,303 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:03:31,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 173 transitions, 358 flow [2023-01-28 12:03:31,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 173 transitions, 358 flow [2023-01-28 12:03:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 173 transitions, 358 flow [2023-01-28 12:03:31,346 INFO L130 PetriNetUnfolder]: 16/173 cut-off events. [2023-01-28 12:03:31,346 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:03:31,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 173 events. 16/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-01-28 12:03:31,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 3242 [2023-01-28 12:03:36,120 INFO L134 LiptonReduction]: Checked pairs total: 3238 [2023-01-28 12:03:36,120 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-01-28 12:03:36,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:03:36,140 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;@69c07533, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:03:36,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:03:36,146 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 12:03:36,146 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:03:36,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:36,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:36,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:36,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash 924236132, now seen corresponding path program 1 times [2023-01-28 12:03:36,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970647330] [2023-01-28 12:03:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:36,501 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 12:03:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:36,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970647330] [2023-01-28 12:03:36,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970647330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:03:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:03:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:03:36,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527681873] [2023-01-28 12:03:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:36,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:03:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:03:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:03:36,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 393 [2023-01-28 12:03:36,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 12:03:36,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:36,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 393 [2023-01-28 12:03:36,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:36,610 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-28 12:03:36,610 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 12:03:36,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 189 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-28 12:03:36,613 INFO L137 encePairwiseOnDemand]: 390/393 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 12:03:36,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 12:03:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:03:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:03:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-01-28 12:03:36,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40627650551314676 [2023-01-28 12:03:36,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-01-28 12:03:36,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-01-28 12:03:36,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:36,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-01-28 12:03:36,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 12:03:36,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 12:03:36,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 12:03:36,658 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 479 transitions. [2023-01-28 12:03:36,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 12:03:36,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:03:36,664 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 12:03:36,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 12:03:36,671 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 12:03:36,671 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 12:03:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 12:03:36,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:36,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:36,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:03:36,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:36,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1656557720, now seen corresponding path program 1 times [2023-01-28 12:03:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156928622] [2023-01-28 12:03:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:36,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:03:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:36,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156928622] [2023-01-28 12:03:36,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156928622] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:03:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:03:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 12:03:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925071431] [2023-01-28 12:03:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:03:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:03:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:03:36,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 393 [2023-01-28 12:03:36,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 12:03:36,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:36,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 393 [2023-01-28 12:03:36,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:36,909 INFO L130 PetriNetUnfolder]: 66/117 cut-off events. [2023-01-28 12:03:36,910 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:03:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 9 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-01-28 12:03:36,911 INFO L137 encePairwiseOnDemand]: 389/393 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-01-28 12:03:36,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-01-28 12:03:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:03:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:03:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-01-28 12:03:36,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39609838846480067 [2023-01-28 12:03:36,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-01-28 12:03:36,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-01-28 12:03:36,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:36,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-01-28 12:03:36,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 12:03:36,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 12:03:36,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 12:03:36,917 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 467 transitions. [2023-01-28 12:03:36,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-01-28 12:03:36,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:03:36,919 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-01-28 12:03:36,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-01-28 12:03:36,920 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-01-28 12:03:36,920 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-01-28 12:03:36,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 12:03:36,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:36,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:36,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:03:36,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:36,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1844840923, now seen corresponding path program 1 times [2023-01-28 12:03:36,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:36,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923293751] [2023-01-28 12:03:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:36,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:37,091 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 12:03:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923293751] [2023-01-28 12:03:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923293751] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:03:37,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:03:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:03:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506579294] [2023-01-28 12:03:37,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:03:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:03:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:03:37,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 393 [2023-01-28 12:03:37,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:03:37,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:37,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 393 [2023-01-28 12:03:37,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:37,190 INFO L130 PetriNetUnfolder]: 74/143 cut-off events. [2023-01-28 12:03:37,190 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-01-28 12:03:37,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 143 events. 74/143 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 469 event pairs, 15 based on Foata normal form. 8/150 useless extension candidates. Maximal degree in co-relation 330. Up to 83 conditions per place. [2023-01-28 12:03:37,192 INFO L137 encePairwiseOnDemand]: 389/393 looper letters, 29 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-01-28 12:03:37,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 180 flow [2023-01-28 12:03:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:03:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:03:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-01-28 12:03:37,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41475826972010177 [2023-01-28 12:03:37,196 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-01-28 12:03:37,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-01-28 12:03:37,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:37,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-01-28 12:03:37,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 12:03:37,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 12:03:37,202 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 12:03:37,202 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 4 states and 652 transitions. [2023-01-28 12:03:37,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 36 transitions, 180 flow [2023-01-28 12:03:37,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:03:37,204 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 89 flow [2023-01-28 12:03:37,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-28 12:03:37,205 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-28 12:03:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 89 flow [2023-01-28 12:03:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:03:37,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:37,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:03:37,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:37,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:37,210 INFO L85 PathProgramCache]: Analyzing trace with hash -338318067, now seen corresponding path program 1 times [2023-01-28 12:03:37,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741581944] [2023-01-28 12:03:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:37,360 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 12:03:37,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741581944] [2023-01-28 12:03:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741581944] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:03:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:03:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:03:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933821842] [2023-01-28 12:03:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:03:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:03:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:03:37,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 393 [2023-01-28 12:03:37,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 12:03:37,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:37,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 393 [2023-01-28 12:03:37,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:37,498 INFO L130 PetriNetUnfolder]: 93/182 cut-off events. [2023-01-28 12:03:37,499 INFO L131 PetriNetUnfolder]: For 119/119 co-relation queries the response was YES. [2023-01-28 12:03:37,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 182 events. 93/182 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 615 event pairs, 26 based on Foata normal form. 2/183 useless extension candidates. Maximal degree in co-relation 506. Up to 89 conditions per place. [2023-01-28 12:03:37,502 INFO L137 encePairwiseOnDemand]: 387/393 looper letters, 31 selfloop transitions, 7 changer transitions 11/49 dead transitions. [2023-01-28 12:03:37,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 274 flow [2023-01-28 12:03:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 12:03:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 12:03:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 922 transitions. [2023-01-28 12:03:37,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39100932994062765 [2023-01-28 12:03:37,506 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 922 transitions. [2023-01-28 12:03:37,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 922 transitions. [2023-01-28 12:03:37,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:37,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 922 transitions. [2023-01-28 12:03:37,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.66666666666666) internal successors, (922), 6 states have internal predecessors, (922), 0 states have call successors, (0), 0 states 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 12:03:37,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 393.0) internal successors, (2751), 7 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 12:03:37,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 393.0) internal successors, (2751), 7 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 12:03:37,514 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 89 flow. Second operand 6 states and 922 transitions. [2023-01-28 12:03:37,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 274 flow [2023-01-28 12:03:37,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 264 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 12:03:37,516 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 126 flow [2023-01-28 12:03:37,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-01-28 12:03:37,517 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 12 predicate places. [2023-01-28 12:03:37,517 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 126 flow [2023-01-28 12:03:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 12:03:37,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:37,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 12:03:37,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:37,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1252150367, now seen corresponding path program 2 times [2023-01-28 12:03:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562559735] [2023-01-28 12:03:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:37,651 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 12:03:37,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562559735] [2023-01-28 12:03:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562559735] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59715839] [2023-01-28 12:03:37,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:03:37,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:37,655 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 12:03:37,659 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 12:03:37,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:03:37,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 12:03:37,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:37,899 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 12:03:37,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:37,957 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 12:03:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59715839] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:37,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 12:03:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 7 [2023-01-28 12:03:37,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867542892] [2023-01-28 12:03:37,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:37,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:03:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:03:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 12:03:37,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 393 [2023-01-28 12:03:37,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 12:03:37,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:37,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 393 [2023-01-28 12:03:37,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:38,041 INFO L130 PetriNetUnfolder]: 85/163 cut-off events. [2023-01-28 12:03:38,041 INFO L131 PetriNetUnfolder]: For 248/261 co-relation queries the response was YES. [2023-01-28 12:03:38,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 163 events. 85/163 cut-off events. For 248/261 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 501 event pairs, 16 based on Foata normal form. 19/179 useless extension candidates. Maximal degree in co-relation 561. Up to 106 conditions per place. [2023-01-28 12:03:38,043 INFO L137 encePairwiseOnDemand]: 389/393 looper letters, 29 selfloop transitions, 6 changer transitions 4/40 dead transitions. [2023-01-28 12:03:38,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 262 flow [2023-01-28 12:03:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:03:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:03:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2023-01-28 12:03:38,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40076335877862596 [2023-01-28 12:03:38,045 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2023-01-28 12:03:38,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2023-01-28 12:03:38,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:38,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2023-01-28 12:03:38,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 12:03:38,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 12:03:38,051 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 12:03:38,051 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 126 flow. Second operand 4 states and 630 transitions. [2023-01-28 12:03:38,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 262 flow [2023-01-28 12:03:38,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 248 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 12:03:38,055 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 151 flow [2023-01-28 12:03:38,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-01-28 12:03:38,055 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2023-01-28 12:03:38,056 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 151 flow [2023-01-28 12:03:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 12:03:38,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:38,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:38,067 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 12:03:38,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:38,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:38,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:38,265 INFO L85 PathProgramCache]: Analyzing trace with hash 906879297, now seen corresponding path program 3 times [2023-01-28 12:03:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:38,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138196884] [2023-01-28 12:03:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:38,359 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 12:03:38,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:38,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138196884] [2023-01-28 12:03:38,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138196884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:03:38,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:03:38,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:03:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282777286] [2023-01-28 12:03:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:03:38,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:03:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:03:38,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 393 [2023-01-28 12:03:38,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 12:03:38,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:38,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 393 [2023-01-28 12:03:38,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:38,462 INFO L130 PetriNetUnfolder]: 102/207 cut-off events. [2023-01-28 12:03:38,462 INFO L131 PetriNetUnfolder]: For 409/409 co-relation queries the response was YES. [2023-01-28 12:03:38,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 207 events. 102/207 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 714 event pairs, 36 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 737. Up to 129 conditions per place. [2023-01-28 12:03:38,463 INFO L137 encePairwiseOnDemand]: 388/393 looper letters, 34 selfloop transitions, 8 changer transitions 8/50 dead transitions. [2023-01-28 12:03:38,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 355 flow [2023-01-28 12:03:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:03:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:03:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 769 transitions. [2023-01-28 12:03:38,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39134860050890585 [2023-01-28 12:03:38,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 769 transitions. [2023-01-28 12:03:38,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 769 transitions. [2023-01-28 12:03:38,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:38,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 769 transitions. [2023-01-28 12:03:38,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 12:03:38,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 393.0) internal successors, (2358), 6 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states 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 12:03:38,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 393.0) internal successors, (2358), 6 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states 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 12:03:38,471 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 151 flow. Second operand 5 states and 769 transitions. [2023-01-28 12:03:38,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 355 flow [2023-01-28 12:03:38,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 346 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 12:03:38,475 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 194 flow [2023-01-28 12:03:38,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-01-28 12:03:38,477 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-01-28 12:03:38,478 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 194 flow [2023-01-28 12:03:38,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 12:03:38,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:38,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 12:03:38,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:38,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1096563895, now seen corresponding path program 2 times [2023-01-28 12:03:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:38,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115862168] [2023-01-28 12:03:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:38,578 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 12:03:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:38,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115862168] [2023-01-28 12:03:38,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115862168] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:03:38,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:03:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:03:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832511855] [2023-01-28 12:03:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:03:38,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:03:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:03:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:03:38,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 393 [2023-01-28 12:03:38,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:03:38,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:38,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 393 [2023-01-28 12:03:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:38,685 INFO L130 PetriNetUnfolder]: 96/192 cut-off events. [2023-01-28 12:03:38,686 INFO L131 PetriNetUnfolder]: For 597/607 co-relation queries the response was YES. [2023-01-28 12:03:38,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 192 events. 96/192 cut-off events. For 597/607 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 643 event pairs, 31 based on Foata normal form. 13/199 useless extension candidates. Maximal degree in co-relation 800. Up to 130 conditions per place. [2023-01-28 12:03:38,687 INFO L137 encePairwiseOnDemand]: 389/393 looper letters, 28 selfloop transitions, 6 changer transitions 5/42 dead transitions. [2023-01-28 12:03:38,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 338 flow [2023-01-28 12:03:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:03:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:03:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-01-28 12:03:38,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41475826972010177 [2023-01-28 12:03:38,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-01-28 12:03:38,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-01-28 12:03:38,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:38,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-01-28 12:03:38,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 12:03:38,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 12:03:38,694 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states 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 12:03:38,694 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 194 flow. Second operand 4 states and 652 transitions. [2023-01-28 12:03:38,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 338 flow [2023-01-28 12:03:38,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 313 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-28 12:03:38,699 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 213 flow [2023-01-28 12:03:38,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-01-28 12:03:38,699 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-01-28 12:03:38,700 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 213 flow [2023-01-28 12:03:38,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:03:38,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:38,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:03:38,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:38,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1118128293, now seen corresponding path program 4 times [2023-01-28 12:03:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:38,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455941254] [2023-01-28 12:03:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:38,788 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 12:03:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455941254] [2023-01-28 12:03:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455941254] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704402443] [2023-01-28 12:03:38,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:03:38,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:38,790 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 12:03:38,793 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 12:03:38,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:03:38,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:38,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 12:03:38,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:38,914 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 12:03:38,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:38,979 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 12:03:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704402443] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:38,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2023-01-28 12:03:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526628008] [2023-01-28 12:03:38,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 12:03:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 12:03:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-28 12:03:38,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 393 [2023-01-28 12:03:38,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 213 flow. Second operand has 10 states, 10 states have (on average 148.8) internal successors, (1488), 10 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 12:03:38,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:38,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 393 [2023-01-28 12:03:38,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:39,198 INFO L130 PetriNetUnfolder]: 125/231 cut-off events. [2023-01-28 12:03:39,198 INFO L131 PetriNetUnfolder]: For 749/749 co-relation queries the response was YES. [2023-01-28 12:03:39,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 231 events. 125/231 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 767 event pairs, 20 based on Foata normal form. 24/254 useless extension candidates. Maximal degree in co-relation 956. Up to 92 conditions per place. [2023-01-28 12:03:39,201 INFO L137 encePairwiseOnDemand]: 387/393 looper letters, 39 selfloop transitions, 25 changer transitions 9/73 dead transitions. [2023-01-28 12:03:39,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 582 flow [2023-01-28 12:03:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 12:03:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 12:03:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1382 transitions. [2023-01-28 12:03:39,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907266044670625 [2023-01-28 12:03:39,205 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1382 transitions. [2023-01-28 12:03:39,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1382 transitions. [2023-01-28 12:03:39,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:39,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1382 transitions. [2023-01-28 12:03:39,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.55555555555554) internal successors, (1382), 9 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states 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 12:03:39,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 393.0) internal successors, (3930), 10 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 12:03:39,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 393.0) internal successors, (3930), 10 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 12:03:39,213 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 213 flow. Second operand 9 states and 1382 transitions. [2023-01-28 12:03:39,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 582 flow [2023-01-28 12:03:39,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 73 transitions, 560 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 12:03:39,217 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 373 flow [2023-01-28 12:03:39,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=373, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2023-01-28 12:03:39,218 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 32 predicate places. [2023-01-28 12:03:39,218 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 373 flow [2023-01-28 12:03:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 148.8) internal successors, (1488), 10 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states 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 12:03:39,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:39,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:39,228 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 12:03:39,424 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,SelfDestructingSolverStorable7 [2023-01-28 12:03:39,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:39,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1249714855, now seen corresponding path program 1 times [2023-01-28 12:03:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538068090] [2023-01-28 12:03:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:03:39,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:39,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538068090] [2023-01-28 12:03:39,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538068090] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:39,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158908783] [2023-01-28 12:03:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:39,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:39,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:39,575 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 12:03:39,577 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 12:03:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:39,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 12:03:39,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:39,723 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 12:03:39,758 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 12:03:39,778 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 12:03:39,932 INFO L321 Elim1Store]: treesize reduction 37, result has 64.8 percent of original size [2023-01-28 12:03:39,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 101 [2023-01-28 12:03:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:03:40,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:42,379 WARN L839 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_182 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_182) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ c_~f~0.offset (* 4 (select .cse1 (+ (* (select .cse1 (+ c_~f~0.offset (* ~x2~0 4))) 4) c_~f~0.offset))))))) (or (< .cse0 0) (< ~x1~0 0) (<= c_~size~0 .cse0) (= (select .cse1 (+ (* ~x1~0 4) c_~f~0.offset)) (select .cse1 (+ c_~f~0.offset (* .cse0 4)))) (<= c_~size~0 ~x1~0))))) is different from false [2023-01-28 12:03:42,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:42,977 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 296 treesize of output 176 [2023-01-28 12:03:43,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:43,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 852 treesize of output 804 [2023-01-28 12:03:43,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:43,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 228 [2023-01-28 12:03:43,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:43,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 259 treesize of output 225 [2023-01-28 12:03:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:03:48,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158908783] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:03:48,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:03:48,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-01-28 12:03:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207108201] [2023-01-28 12:03:48,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:03:48,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:03:48,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:03:48,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:03:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=165, Unknown=2, NotChecked=26, Total=240 [2023-01-28 12:03:48,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 393 [2023-01-28 12:03:48,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 373 flow. Second operand has 16 states, 16 states have (on average 107.75) internal successors, (1724), 16 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states 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 12:03:48,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:03:48,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 393 [2023-01-28 12:03:48,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:03:48,896 INFO L130 PetriNetUnfolder]: 275/487 cut-off events. [2023-01-28 12:03:48,896 INFO L131 PetriNetUnfolder]: For 1576/1596 co-relation queries the response was YES. [2023-01-28 12:03:48,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2351 conditions, 487 events. 275/487 cut-off events. For 1576/1596 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1896 event pairs, 8 based on Foata normal form. 38/517 useless extension candidates. Maximal degree in co-relation 1976. Up to 249 conditions per place. [2023-01-28 12:03:48,900 INFO L137 encePairwiseOnDemand]: 385/393 looper letters, 75 selfloop transitions, 35 changer transitions 43/157 dead transitions. [2023-01-28 12:03:48,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 157 transitions, 1394 flow [2023-01-28 12:03:48,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:03:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:03:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2540 transitions. [2023-01-28 12:03:48,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2810045358999889 [2023-01-28 12:03:48,908 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2540 transitions. [2023-01-28 12:03:48,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2540 transitions. [2023-01-28 12:03:48,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:03:48,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2540 transitions. [2023-01-28 12:03:48,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 110.43478260869566) internal successors, (2540), 23 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states 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 12:03:48,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:03:48,927 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:03:48,927 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 373 flow. Second operand 23 states and 2540 transitions. [2023-01-28 12:03:48,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 157 transitions, 1394 flow [2023-01-28 12:03:48,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 157 transitions, 1201 flow, removed 74 selfloop flow, removed 5 redundant places. [2023-01-28 12:03:48,936 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 573 flow [2023-01-28 12:03:48,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=573, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2023-01-28 12:03:48,937 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 55 predicate places. [2023-01-28 12:03:48,937 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 573 flow [2023-01-28 12:03:48,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 107.75) internal successors, (1724), 16 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states 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 12:03:48,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:03:48,938 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:03:48,946 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 12:03:49,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:49,145 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:03:49,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:03:49,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1302241712, now seen corresponding path program 2 times [2023-01-28 12:03:49,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:03:49,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050949305] [2023-01-28 12:03:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:03:49,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:03:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:03:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 12:03:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:03:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050949305] [2023-01-28 12:03:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050949305] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:03:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849931749] [2023-01-28 12:03:49,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:03:49,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:03:49,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:03:49,289 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 12:03:49,314 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 12:03:49,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:03:49,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:03:49,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 12:03:49,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:03:49,458 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 15 treesize of output 11 [2023-01-28 12:03:49,523 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 12:03:49,540 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 12:03:49,692 INFO L321 Elim1Store]: treesize reduction 41, result has 61.0 percent of original size [2023-01-28 12:03:49,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 97 [2023-01-28 12:03:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:03:50,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:03:58,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:58,156 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 296 treesize of output 176 [2023-01-28 12:03:58,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:58,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 852 treesize of output 804 [2023-01-28 12:03:58,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:58,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 228 [2023-01-28 12:03:58,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:03:58,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 259 treesize of output 225 [2023-01-28 12:04:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:04:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849931749] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:01,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-01-28 12:04:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847777119] [2023-01-28 12:04:01,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:01,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 12:04:01,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:01,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 12:04:01,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=213, Unknown=6, NotChecked=0, Total=272 [2023-01-28 12:04:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 393 [2023-01-28 12:04:01,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 573 flow. Second operand has 17 states, 17 states have (on average 107.88235294117646) internal successors, (1834), 17 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states 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 12:04:01,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:01,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 393 [2023-01-28 12:04:01,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:02,501 INFO L130 PetriNetUnfolder]: 225/419 cut-off events. [2023-01-28 12:04:02,501 INFO L131 PetriNetUnfolder]: For 1945/1964 co-relation queries the response was YES. [2023-01-28 12:04:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 419 events. 225/419 cut-off events. For 1945/1964 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1635 event pairs, 4 based on Foata normal form. 43/460 useless extension candidates. Maximal degree in co-relation 2208. Up to 141 conditions per place. [2023-01-28 12:04:02,505 INFO L137 encePairwiseOnDemand]: 385/393 looper letters, 53 selfloop transitions, 24 changer transitions 55/136 dead transitions. [2023-01-28 12:04:02,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 1265 flow [2023-01-28 12:04:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 12:04:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 12:04:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2094 transitions. [2023-01-28 12:04:02,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2804339092004821 [2023-01-28 12:04:02,511 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2094 transitions. [2023-01-28 12:04:02,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2094 transitions. [2023-01-28 12:04:02,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:02,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2094 transitions. [2023-01-28 12:04:02,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 110.21052631578948) internal successors, (2094), 19 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states 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 12:04:02,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 393.0) internal successors, (7860), 20 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states 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 12:04:02,526 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 393.0) internal successors, (7860), 20 states have internal predecessors, (7860), 0 states have call successors, (0), 0 states 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 12:04:02,526 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 573 flow. Second operand 19 states and 2094 transitions. [2023-01-28 12:04:02,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 1265 flow [2023-01-28 12:04:02,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 1158 flow, removed 39 selfloop flow, removed 7 redundant places. [2023-01-28 12:04:02,535 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 471 flow [2023-01-28 12:04:02,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=471, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2023-01-28 12:04:02,536 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 63 predicate places. [2023-01-28 12:04:02,536 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 471 flow [2023-01-28 12:04:02,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 107.88235294117646) internal successors, (1834), 17 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states 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 12:04:02,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:02,537 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:02,545 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 12:04:02,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:02,743 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:02,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1189533459, now seen corresponding path program 3 times [2023-01-28 12:04:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:02,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286330293] [2023-01-28 12:04:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:04:05,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:05,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286330293] [2023-01-28 12:04:05,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286330293] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:05,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620010892] [2023-01-28 12:04:05,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:04:05,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:05,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:05,643 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 12:04:05,644 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 12:04:05,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 12:04:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:04:06,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 12:04:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:06,105 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 12:04:06,148 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 12:04:06,184 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 12:04:06,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:04:06,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 76 [2023-01-28 12:04:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:04:06,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:06,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:04:06,870 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 374 treesize of output 218 [2023-01-28 12:04:07,234 INFO L321 Elim1Store]: treesize reduction 5, result has 98.2 percent of original size [2023-01-28 12:04:07,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 488 treesize of output 691 [2023-01-28 12:04:07,739 INFO L321 Elim1Store]: treesize reduction 8, result has 97.1 percent of original size [2023-01-28 12:04:07,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 376 treesize of output 520 [2023-01-28 12:04:08,222 INFO L321 Elim1Store]: treesize reduction 8, result has 97.1 percent of original size [2023-01-28 12:04:08,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 373 [2023-01-28 12:04:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:04:31,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620010892] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:31,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:31,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-01-28 12:04:31,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968588735] [2023-01-28 12:04:31,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 12:04:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 12:04:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=748, Unknown=2, NotChecked=0, Total=870 [2023-01-28 12:04:31,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:04:31,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 49 transitions, 471 flow. Second operand has 30 states, 30 states have (on average 116.5) internal successors, (3495), 30 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states 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 12:04:31,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:31,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:04:31,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:38,625 INFO L130 PetriNetUnfolder]: 501/889 cut-off events. [2023-01-28 12:04:38,625 INFO L131 PetriNetUnfolder]: For 3648/3687 co-relation queries the response was YES. [2023-01-28 12:04:38,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4649 conditions, 889 events. 501/889 cut-off events. For 3648/3687 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3809 event pairs, 30 based on Foata normal form. 39/917 useless extension candidates. Maximal degree in co-relation 4596. Up to 356 conditions per place. [2023-01-28 12:04:38,634 INFO L137 encePairwiseOnDemand]: 386/393 looper letters, 125 selfloop transitions, 75 changer transitions 13/220 dead transitions. [2023-01-28 12:04:38,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 220 transitions, 2194 flow [2023-01-28 12:04:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:04:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:04:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2922 transitions. [2023-01-28 12:04:38,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3097964376590331 [2023-01-28 12:04:38,643 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2922 transitions. [2023-01-28 12:04:38,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2922 transitions. [2023-01-28 12:04:38,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:38,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2922 transitions. [2023-01-28 12:04:38,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.75) internal successors, (2922), 24 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states 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 12:04:38,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states 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 12:04:38,664 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states 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 12:04:38,664 INFO L175 Difference]: Start difference. First operand has 84 places, 49 transitions, 471 flow. Second operand 24 states and 2922 transitions. [2023-01-28 12:04:38,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 220 transitions, 2194 flow [2023-01-28 12:04:38,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 220 transitions, 1859 flow, removed 101 selfloop flow, removed 16 redundant places. [2023-01-28 12:04:38,678 INFO L231 Difference]: Finished difference. Result has 86 places, 120 transitions, 1292 flow [2023-01-28 12:04:38,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1292, PETRI_PLACES=86, PETRI_TRANSITIONS=120} [2023-01-28 12:04:38,679 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 65 predicate places. [2023-01-28 12:04:38,679 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 120 transitions, 1292 flow [2023-01-28 12:04:38,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 116.5) internal successors, (3495), 30 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states 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 12:04:38,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:38,680 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:38,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:04:38,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 12:04:38,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:38,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:38,892 INFO L85 PathProgramCache]: Analyzing trace with hash -948692765, now seen corresponding path program 4 times [2023-01-28 12:04:38,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:38,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093047059] [2023-01-28 12:04:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:04:41,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093047059] [2023-01-28 12:04:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093047059] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:41,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057863411] [2023-01-28 12:04:41,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:04:41,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:41,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:41,816 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 12:04:41,817 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 12:04:41,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:04:41,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:04:41,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 12:04:41,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:42,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:04:42,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:04:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:04:42,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:42,585 INFO L321 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-01-28 12:04:42,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-01-28 12:04:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:43,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057863411] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:43,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:43,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 5] total 21 [2023-01-28 12:04:43,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127112788] [2023-01-28 12:04:43,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:43,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 12:04:43,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 12:04:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-01-28 12:04:43,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:04:43,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 120 transitions, 1292 flow. Second operand has 23 states, 23 states have (on average 116.91304347826087) internal successors, (2689), 23 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states 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 12:04:43,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:43,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:04:43,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:45,253 INFO L130 PetriNetUnfolder]: 909/1626 cut-off events. [2023-01-28 12:04:45,253 INFO L131 PetriNetUnfolder]: For 6187/6241 co-relation queries the response was YES. [2023-01-28 12:04:45,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 1626 events. 909/1626 cut-off events. For 6187/6241 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8196 event pairs, 146 based on Foata normal form. 44/1654 useless extension candidates. Maximal degree in co-relation 7649. Up to 856 conditions per place. [2023-01-28 12:04:45,268 INFO L137 encePairwiseOnDemand]: 386/393 looper letters, 159 selfloop transitions, 113 changer transitions 7/286 dead transitions. [2023-01-28 12:04:45,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 286 transitions, 3146 flow [2023-01-28 12:04:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:04:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:04:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2793 transitions. [2023-01-28 12:04:45,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3089943577829406 [2023-01-28 12:04:45,273 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2793 transitions. [2023-01-28 12:04:45,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2793 transitions. [2023-01-28 12:04:45,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:45,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2793 transitions. [2023-01-28 12:04:45,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 121.43478260869566) internal successors, (2793), 23 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states 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 12:04:45,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:04:45,288 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:04:45,288 INFO L175 Difference]: Start difference. First operand has 86 places, 120 transitions, 1292 flow. Second operand 23 states and 2793 transitions. [2023-01-28 12:04:45,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 286 transitions, 3146 flow [2023-01-28 12:04:45,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 286 transitions, 2902 flow, removed 120 selfloop flow, removed 2 redundant places. [2023-01-28 12:04:45,311 INFO L231 Difference]: Finished difference. Result has 111 places, 204 transitions, 2299 flow [2023-01-28 12:04:45,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2299, PETRI_PLACES=111, PETRI_TRANSITIONS=204} [2023-01-28 12:04:45,312 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 90 predicate places. [2023-01-28 12:04:45,312 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 204 transitions, 2299 flow [2023-01-28 12:04:45,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 116.91304347826087) internal successors, (2689), 23 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states 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 12:04:45,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:45,313 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:45,319 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 12:04:45,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:45,519 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:45,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1651791961, now seen corresponding path program 5 times [2023-01-28 12:04:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:45,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024402592] [2023-01-28 12:04:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:04:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:48,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024402592] [2023-01-28 12:04:48,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024402592] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:48,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318687103] [2023-01-28 12:04:48,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:04:48,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:48,058 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 12:04:48,060 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 12:04:48,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 12:04:48,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:04:48,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 12:04:48,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:48,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 12:04:48,502 INFO L321 Elim1Store]: treesize reduction 169, result has 27.2 percent of original size [2023-01-28 12:04:48,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 99 [2023-01-28 12:04:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:04:48,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:49,034 INFO L321 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-01-28 12:04:49,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-01-28 12:04:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:04:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318687103] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:49,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:49,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 22 [2023-01-28 12:04:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716514211] [2023-01-28 12:04:49,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:49,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 12:04:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 12:04:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-01-28 12:04:49,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:04:49,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 204 transitions, 2299 flow. Second operand has 24 states, 24 states have (on average 116.91666666666667) internal successors, (2806), 24 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states 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 12:04:49,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:49,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:04:49,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:52,027 INFO L130 PetriNetUnfolder]: 1453/2617 cut-off events. [2023-01-28 12:04:52,027 INFO L131 PetriNetUnfolder]: For 11102/11150 co-relation queries the response was YES. [2023-01-28 12:04:52,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13312 conditions, 2617 events. 1453/2617 cut-off events. For 11102/11150 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15166 event pairs, 242 based on Foata normal form. 37/2640 useless extension candidates. Maximal degree in co-relation 12505. Up to 1581 conditions per place. [2023-01-28 12:04:52,053 INFO L137 encePairwiseOnDemand]: 386/393 looper letters, 209 selfloop transitions, 137 changer transitions 5/358 dead transitions. [2023-01-28 12:04:52,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 358 transitions, 4361 flow [2023-01-28 12:04:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:04:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:04:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2904 transitions. [2023-01-28 12:04:52,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30788804071246817 [2023-01-28 12:04:52,059 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2904 transitions. [2023-01-28 12:04:52,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2904 transitions. [2023-01-28 12:04:52,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:52,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2904 transitions. [2023-01-28 12:04:52,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.0) internal successors, (2904), 24 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 12:04:52,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states 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 12:04:52,079 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states 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 12:04:52,079 INFO L175 Difference]: Start difference. First operand has 111 places, 204 transitions, 2299 flow. Second operand 24 states and 2904 transitions. [2023-01-28 12:04:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 358 transitions, 4361 flow [2023-01-28 12:04:52,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 358 transitions, 4059 flow, removed 136 selfloop flow, removed 6 redundant places. [2023-01-28 12:04:52,132 INFO L231 Difference]: Finished difference. Result has 134 places, 281 transitions, 3428 flow [2023-01-28 12:04:52,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3428, PETRI_PLACES=134, PETRI_TRANSITIONS=281} [2023-01-28 12:04:52,133 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 113 predicate places. [2023-01-28 12:04:52,133 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 281 transitions, 3428 flow [2023-01-28 12:04:52,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 116.91666666666667) internal successors, (2806), 24 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states 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 12:04:52,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:52,134 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:52,143 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 12:04:52,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:52,341 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:52,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1515982353, now seen corresponding path program 6 times [2023-01-28 12:04:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459170208] [2023-01-28 12:04:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:04:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:04:54,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:04:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459170208] [2023-01-28 12:04:54,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459170208] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:04:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894436253] [2023-01-28 12:04:54,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:04:54,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:04:54,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:04:54,947 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 12:04:54,950 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 12:04:55,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 12:04:55,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:04:55,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 12:04:55,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:04:55,312 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:04:55,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:04:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:04:55,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:04:55,806 INFO L321 Elim1Store]: treesize reduction 20, result has 92.7 percent of original size [2023-01-28 12:04:55,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 67 treesize of output 304 [2023-01-28 12:04:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 12:04:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894436253] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:04:56,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:04:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 5] total 21 [2023-01-28 12:04:56,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522657551] [2023-01-28 12:04:56,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:04:56,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 12:04:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:04:56,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 12:04:56,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-01-28 12:04:56,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:04:56,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 281 transitions, 3428 flow. Second operand has 23 states, 23 states have (on average 116.91304347826087) internal successors, (2689), 23 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states 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 12:04:56,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:04:56,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:04:56,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:04:58,677 INFO L130 PetriNetUnfolder]: 2041/3680 cut-off events. [2023-01-28 12:04:58,678 INFO L131 PetriNetUnfolder]: For 17510/17564 co-relation queries the response was YES. [2023-01-28 12:04:58,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19305 conditions, 3680 events. 2041/3680 cut-off events. For 17510/17564 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23388 event pairs, 440 based on Foata normal form. 34/3696 useless extension candidates. Maximal degree in co-relation 18042. Up to 2503 conditions per place. [2023-01-28 12:04:58,710 INFO L137 encePairwiseOnDemand]: 386/393 looper letters, 282 selfloop transitions, 153 changer transitions 9/451 dead transitions. [2023-01-28 12:04:58,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 451 transitions, 5965 flow [2023-01-28 12:04:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:04:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:04:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2896 transitions. [2023-01-28 12:04:58,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3070398642917727 [2023-01-28 12:04:58,715 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2896 transitions. [2023-01-28 12:04:58,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2896 transitions. [2023-01-28 12:04:58,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:04:58,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2896 transitions. [2023-01-28 12:04:58,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 120.66666666666667) internal successors, (2896), 24 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states 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 12:04:58,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states 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 12:04:58,727 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 393.0) internal successors, (9825), 25 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states 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 12:04:58,727 INFO L175 Difference]: Start difference. First operand has 134 places, 281 transitions, 3428 flow. Second operand 24 states and 2896 transitions. [2023-01-28 12:04:58,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 451 transitions, 5965 flow [2023-01-28 12:04:58,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 451 transitions, 5756 flow, removed 67 selfloop flow, removed 11 redundant places. [2023-01-28 12:04:58,791 INFO L231 Difference]: Finished difference. Result has 157 places, 374 transitions, 5065 flow [2023-01-28 12:04:58,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5065, PETRI_PLACES=157, PETRI_TRANSITIONS=374} [2023-01-28 12:04:58,792 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 136 predicate places. [2023-01-28 12:04:58,792 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 374 transitions, 5065 flow [2023-01-28 12:04:58,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 116.91304347826087) internal successors, (2689), 23 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states 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 12:04:58,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:04:58,793 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:04:58,798 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 12:04:58,998 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,SelfDestructingSolverStorable13 [2023-01-28 12:04:58,999 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:04:58,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:04:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 829672547, now seen corresponding path program 7 times [2023-01-28 12:04:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:04:59,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076517905] [2023-01-28 12:04:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:04:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:04:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:01,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076517905] [2023-01-28 12:05:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076517905] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608536673] [2023-01-28 12:05:01,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 12:05:01,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:01,095 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 12:05:01,097 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 12:05:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:01,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 12:05:01,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:01,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:05:01,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:05:01,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:01,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:05:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:01,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:03,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:03,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 378 [2023-01-28 12:05:04,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:04,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 49 treesize of output 256 [2023-01-28 12:05:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:05:07,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608536673] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:07,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:07,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2023-01-28 12:05:07,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031712081] [2023-01-28 12:05:07,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:07,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 12:05:07,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:07,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 12:05:07,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=621, Unknown=3, NotChecked=0, Total=702 [2023-01-28 12:05:07,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:05:07,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 374 transitions, 5065 flow. Second operand has 27 states, 27 states have (on average 116.70370370370371) internal successors, (3151), 27 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 12:05:07,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:07,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:05:07,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:09,838 INFO L130 PetriNetUnfolder]: 2281/4117 cut-off events. [2023-01-28 12:05:09,838 INFO L131 PetriNetUnfolder]: For 21789/21838 co-relation queries the response was YES. [2023-01-28 12:05:09,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22823 conditions, 4117 events. 2281/4117 cut-off events. For 21789/21838 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 26605 event pairs, 474 based on Foata normal form. 39/4144 useless extension candidates. Maximal degree in co-relation 21160. Up to 2658 conditions per place. [2023-01-28 12:05:09,875 INFO L137 encePairwiseOnDemand]: 387/393 looper letters, 357 selfloop transitions, 139 changer transitions 5/508 dead transitions. [2023-01-28 12:05:09,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 508 transitions, 7254 flow [2023-01-28 12:05:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 12:05:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 12:05:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3133 transitions. [2023-01-28 12:05:09,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30661577608142493 [2023-01-28 12:05:09,881 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3133 transitions. [2023-01-28 12:05:09,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3133 transitions. [2023-01-28 12:05:09,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:09,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3133 transitions. [2023-01-28 12:05:09,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 120.5) internal successors, (3133), 26 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states 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 12:05:09,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 393.0) internal successors, (10611), 27 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states 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 12:05:09,895 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 393.0) internal successors, (10611), 27 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states 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 12:05:09,895 INFO L175 Difference]: Start difference. First operand has 157 places, 374 transitions, 5065 flow. Second operand 26 states and 3133 transitions. [2023-01-28 12:05:09,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 508 transitions, 7254 flow [2023-01-28 12:05:10,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 508 transitions, 7052 flow, removed 68 selfloop flow, removed 10 redundant places. [2023-01-28 12:05:10,017 INFO L231 Difference]: Finished difference. Result has 175 places, 419 transitions, 5881 flow [2023-01-28 12:05:10,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=4875, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5881, PETRI_PLACES=175, PETRI_TRANSITIONS=419} [2023-01-28 12:05:10,018 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 154 predicate places. [2023-01-28 12:05:10,018 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 419 transitions, 5881 flow [2023-01-28 12:05:10,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 116.70370370370371) internal successors, (3151), 27 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 12:05:10,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:10,019 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:10,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 12:05:10,225 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,SelfDestructingSolverStorable14 [2023-01-28 12:05:10,226 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:10,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2125766925, now seen corresponding path program 8 times [2023-01-28 12:05:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211377677] [2023-01-28 12:05:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:12,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211377677] [2023-01-28 12:05:12,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211377677] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783416640] [2023-01-28 12:05:12,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:05:12,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:12,538 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 12:05:12,540 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 12:05:12,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:05:12,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:12,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 12:05:12,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:12,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:05:12,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:05:12,925 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:12,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:05:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:12,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:15,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:15,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 378 [2023-01-28 12:05:15,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:15,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 49 treesize of output 256 [2023-01-28 12:05:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:05:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783416640] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:19,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:19,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2023-01-28 12:05:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796165984] [2023-01-28 12:05:19,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 12:05:19,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 12:05:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=615, Unknown=2, NotChecked=0, Total=702 [2023-01-28 12:05:19,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:05:19,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 419 transitions, 5881 flow. Second operand has 27 states, 27 states have (on average 116.70370370370371) internal successors, (3151), 27 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 12:05:19,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:19,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:05:19,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:26,981 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 12:05:28,054 INFO L130 PetriNetUnfolder]: 2836/5125 cut-off events. [2023-01-28 12:05:28,054 INFO L131 PetriNetUnfolder]: For 33537/33588 co-relation queries the response was YES. [2023-01-28 12:05:28,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29593 conditions, 5125 events. 2836/5125 cut-off events. For 33537/33588 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 34904 event pairs, 480 based on Foata normal form. 43/5156 useless extension candidates. Maximal degree in co-relation 27940. Up to 2915 conditions per place. [2023-01-28 12:05:28,095 INFO L137 encePairwiseOnDemand]: 386/393 looper letters, 324 selfloop transitions, 266 changer transitions 2/599 dead transitions. [2023-01-28 12:05:28,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 599 transitions, 9233 flow [2023-01-28 12:05:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 12:05:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 12:05:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3142 transitions. [2023-01-28 12:05:28,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3074965746721472 [2023-01-28 12:05:28,101 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3142 transitions. [2023-01-28 12:05:28,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3142 transitions. [2023-01-28 12:05:28,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:28,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3142 transitions. [2023-01-28 12:05:28,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 120.84615384615384) internal successors, (3142), 26 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states 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 12:05:28,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 393.0) internal successors, (10611), 27 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states 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 12:05:28,114 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 393.0) internal successors, (10611), 27 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states 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 12:05:28,114 INFO L175 Difference]: Start difference. First operand has 175 places, 419 transitions, 5881 flow. Second operand 26 states and 3142 transitions. [2023-01-28 12:05:28,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 599 transitions, 9233 flow [2023-01-28 12:05:28,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 599 transitions, 8779 flow, removed 200 selfloop flow, removed 9 redundant places. [2023-01-28 12:05:28,278 INFO L231 Difference]: Finished difference. Result has 195 places, 518 transitions, 7884 flow [2023-01-28 12:05:28,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=5567, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7884, PETRI_PLACES=195, PETRI_TRANSITIONS=518} [2023-01-28 12:05:28,278 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 174 predicate places. [2023-01-28 12:05:28,278 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 518 transitions, 7884 flow [2023-01-28 12:05:28,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 116.70370370370371) internal successors, (3151), 27 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 12:05:28,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:28,279 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:28,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 12:05:28,486 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,SelfDestructingSolverStorable15 [2023-01-28 12:05:28,486 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:28,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1850858787, now seen corresponding path program 9 times [2023-01-28 12:05:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:28,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769732496] [2023-01-28 12:05:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:28,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769732496] [2023-01-28 12:05:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769732496] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596538805] [2023-01-28 12:05:30,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:05:30,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:30,740 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 12:05:30,742 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 12:05:30,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 12:05:30,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:30,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-28 12:05:30,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:30,956 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 12:05:30,997 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 12:05:31,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:05:31,091 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 20 treesize of output 20 [2023-01-28 12:05:31,217 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:31,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:05:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:31,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:33,424 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_464) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset)) 4))) 4)))))) (select .cse0 (+ (* (select .cse0 (+ c_~f~0.offset (* (select (select |c_#memory_int| c_~f~0.base) (+ (* c_~x1~0 4) c_~f~0.offset)) 4))) 4) c_~f~0.offset))))) is different from false [2023-01-28 12:05:33,497 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int)) (v_ArrVal_464 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_463))) (let ((.cse0 (select (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_464) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (= (select .cse0 (+ (* (select .cse0 (+ (* (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (select .cse1 (+ (* (select .cse1 (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* (select .cse0 (+ (* c_~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))) is different from false [2023-01-28 12:05:33,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:33,507 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 122 [2023-01-28 12:05:33,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:33,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 518 treesize of output 954 [2023-01-28 12:05:34,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:34,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 498 [2023-01-28 12:05:34,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:34,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 389 treesize of output 469 [2023-01-28 12:06:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2023-01-28 12:06:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596538805] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:06:38,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:06:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-01-28 12:06:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230292743] [2023-01-28 12:06:38,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:06:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 12:06:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:06:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 12:06:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=8, NotChecked=102, Total=812 [2023-01-28 12:06:38,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:06:38,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 518 transitions, 7884 flow. Second operand has 29 states, 29 states have (on average 116.62068965517241) internal successors, (3382), 29 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states 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 12:06:38,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:06:38,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:06:38,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:06:43,460 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 12:06:50,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:06:52,134 WARN L539 Checker$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 12:06:54,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:06:56,427 WARN L539 Checker$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 12:06:59,292 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 12:06:59,661 INFO L130 PetriNetUnfolder]: 3048/5510 cut-off events. [2023-01-28 12:06:59,662 INFO L131 PetriNetUnfolder]: For 42651/42702 co-relation queries the response was YES. [2023-01-28 12:06:59,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33131 conditions, 5510 events. 3048/5510 cut-off events. For 42651/42702 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 38054 event pairs, 801 based on Foata normal form. 40/5536 useless extension candidates. Maximal degree in co-relation 31461. Up to 4736 conditions per place. [2023-01-28 12:06:59,702 INFO L137 encePairwiseOnDemand]: 384/393 looper letters, 426 selfloop transitions, 197 changer transitions 1/631 dead transitions. [2023-01-28 12:06:59,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 631 transitions, 10590 flow [2023-01-28 12:06:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:06:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:06:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2755 transitions. [2023-01-28 12:06:59,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3047903529151455 [2023-01-28 12:06:59,708 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2755 transitions. [2023-01-28 12:06:59,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2755 transitions. [2023-01-28 12:06:59,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:06:59,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2755 transitions. [2023-01-28 12:06:59,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 119.78260869565217) internal successors, (2755), 23 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states 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 12:06:59,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:06:59,718 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:06:59,718 INFO L175 Difference]: Start difference. First operand has 195 places, 518 transitions, 7884 flow. Second operand 23 states and 2755 transitions. [2023-01-28 12:06:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 631 transitions, 10590 flow [2023-01-28 12:06:59,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 631 transitions, 10170 flow, removed 186 selfloop flow, removed 8 redundant places. [2023-01-28 12:06:59,942 INFO L231 Difference]: Finished difference. Result has 215 places, 587 transitions, 9342 flow [2023-01-28 12:06:59,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=7574, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9342, PETRI_PLACES=215, PETRI_TRANSITIONS=587} [2023-01-28 12:06:59,943 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 194 predicate places. [2023-01-28 12:06:59,943 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 587 transitions, 9342 flow [2023-01-28 12:06:59,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 116.62068965517241) internal successors, (3382), 29 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states 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 12:06:59,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:06:59,944 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:06:59,954 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 12:07:00,150 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,SelfDestructingSolverStorable16 [2023-01-28 12:07:00,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:07:00,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:07:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2028205311, now seen corresponding path program 10 times [2023-01-28 12:07:00,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:07:00,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845586545] [2023-01-28 12:07:00,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:07:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:07:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:07:02,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:07:02,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845586545] [2023-01-28 12:07:02,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845586545] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:07:02,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040009730] [2023-01-28 12:07:02,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 12:07:02,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:02,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:07:02,738 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 12:07:02,740 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 12:07:02,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 12:07:02,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:07:02,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 12:07:02,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:07:02,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:07:02,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:07:03,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:03,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 70 [2023-01-28 12:07:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:07:03,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:07:03,280 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_499 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_499) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* 4 (select .cse0 (+ (* c_~x2~0 4) c_~f~0.offset))) c_~f~0.offset)) 4))) 4))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ (* (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)) 4) c_~f~0.offset)) 4)))))) is different from false [2023-01-28 12:07:03,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:03,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 378 [2023-01-28 12:07:03,624 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:03,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 49 treesize of output 256 [2023-01-28 12:07:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040009730] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:07:07,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:07:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2023-01-28 12:07:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661463659] [2023-01-28 12:07:07,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:07:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 12:07:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:07:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 12:07:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=583, Unknown=1, NotChecked=48, Total=702 [2023-01-28 12:07:07,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:07:07,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 587 transitions, 9342 flow. Second operand has 27 states, 27 states have (on average 116.62962962962963) internal successors, (3149), 27 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states 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 12:07:07,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:07:07,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:07:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:07:10,505 INFO L130 PetriNetUnfolder]: 3660/6638 cut-off events. [2023-01-28 12:07:10,505 INFO L131 PetriNetUnfolder]: For 59015/59073 co-relation queries the response was YES. [2023-01-28 12:07:10,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43164 conditions, 6638 events. 3660/6638 cut-off events. For 59015/59073 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 47857 event pairs, 733 based on Foata normal form. 47/6657 useless extension candidates. Maximal degree in co-relation 41410. Up to 3079 conditions per place. [2023-01-28 12:07:10,551 INFO L137 encePairwiseOnDemand]: 386/393 looper letters, 428 selfloop transitions, 317 changer transitions 5/757 dead transitions. [2023-01-28 12:07:10,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 757 transitions, 13165 flow [2023-01-28 12:07:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 12:07:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 12:07:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2793 transitions. [2023-01-28 12:07:10,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3089943577829406 [2023-01-28 12:07:10,555 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2793 transitions. [2023-01-28 12:07:10,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2793 transitions. [2023-01-28 12:07:10,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:07:10,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2793 transitions. [2023-01-28 12:07:10,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 121.43478260869566) internal successors, (2793), 23 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states 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 12:07:10,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:07:10,566 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 393.0) internal successors, (9432), 24 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states 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 12:07:10,566 INFO L175 Difference]: Start difference. First operand has 215 places, 587 transitions, 9342 flow. Second operand 23 states and 2793 transitions. [2023-01-28 12:07:10,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 757 transitions, 13165 flow [2023-01-28 12:07:10,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 757 transitions, 12855 flow, removed 131 selfloop flow, removed 8 redundant places. [2023-01-28 12:07:10,835 INFO L231 Difference]: Finished difference. Result has 235 places, 658 transitions, 11671 flow [2023-01-28 12:07:10,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=9044, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=11671, PETRI_PLACES=235, PETRI_TRANSITIONS=658} [2023-01-28 12:07:10,835 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 214 predicate places. [2023-01-28 12:07:10,835 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 658 transitions, 11671 flow [2023-01-28 12:07:10,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 116.62962962962963) internal successors, (3149), 27 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states 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 12:07:10,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:07:10,836 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:07:10,841 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 12:07:11,036 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,SelfDestructingSolverStorable17 [2023-01-28 12:07:11,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:07:11,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:07:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1897845819, now seen corresponding path program 11 times [2023-01-28 12:07:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:07:11,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245326747] [2023-01-28 12:07:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:07:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:07:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:07:12,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:07:12,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245326747] [2023-01-28 12:07:12,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245326747] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:07:12,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546491700] [2023-01-28 12:07:12,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 12:07:12,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:12,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:07:12,947 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 12:07:12,948 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 12:07:13,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 12:07:13,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:07:13,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 12:07:13,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:07:13,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:07:13,296 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 32 treesize of output 28 [2023-01-28 12:07:13,341 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 12:07:13,438 INFO L321 Elim1Store]: treesize reduction 169, result has 27.2 percent of original size [2023-01-28 12:07:13,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 53 treesize of output 99 [2023-01-28 12:07:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:07:13,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:07:13,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:13,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 360 [2023-01-28 12:07:14,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:14,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 92 [2023-01-28 12:07:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:07:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546491700] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:07:16,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:07:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 25 [2023-01-28 12:07:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231699348] [2023-01-28 12:07:16,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:07:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 12:07:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:07:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 12:07:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=625, Unknown=3, NotChecked=0, Total=702 [2023-01-28 12:07:16,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 393 [2023-01-28 12:07:16,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 658 transitions, 11671 flow. Second operand has 27 states, 27 states have (on average 116.62962962962963) internal successors, (3149), 27 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states 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 12:07:16,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:07:16,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 393 [2023-01-28 12:07:16,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:07:21,699 INFO L130 PetriNetUnfolder]: 5948/10847 cut-off events. [2023-01-28 12:07:21,700 INFO L131 PetriNetUnfolder]: For 126022/126097 co-relation queries the response was YES. [2023-01-28 12:07:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75237 conditions, 10847 events. 5948/10847 cut-off events. For 126022/126097 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 84540 event pairs, 1132 based on Foata normal form. 67/10897 useless extension candidates. Maximal degree in co-relation 73446. Up to 5909 conditions per place. [2023-01-28 12:07:21,793 INFO L137 encePairwiseOnDemand]: 387/393 looper letters, 528 selfloop transitions, 515 changer transitions 13/1063 dead transitions. [2023-01-28 12:07:21,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1063 transitions, 21252 flow [2023-01-28 12:07:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 12:07:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 12:07:21,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3041 transitions. [2023-01-28 12:07:21,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3095165394402036 [2023-01-28 12:07:21,799 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3041 transitions. [2023-01-28 12:07:21,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3041 transitions. [2023-01-28 12:07:21,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:07:21,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3041 transitions. [2023-01-28 12:07:21,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 121.64) internal successors, (3041), 25 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states 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 12:07:21,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 393.0) internal successors, (10218), 26 states have internal predecessors, (10218), 0 states have call successors, (0), 0 states 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 12:07:21,812 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 393.0) internal successors, (10218), 26 states have internal predecessors, (10218), 0 states have call successors, (0), 0 states 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 12:07:21,812 INFO L175 Difference]: Start difference. First operand has 235 places, 658 transitions, 11671 flow. Second operand 25 states and 3041 transitions. [2023-01-28 12:07:21,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1063 transitions, 21252 flow [2023-01-28 12:07:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1063 transitions, 20518 flow, removed 298 selfloop flow, removed 13 redundant places. [2023-01-28 12:07:22,271 INFO L231 Difference]: Finished difference. Result has 256 places, 951 transitions, 19572 flow [2023-01-28 12:07:22,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=11329, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=19572, PETRI_PLACES=256, PETRI_TRANSITIONS=951} [2023-01-28 12:07:22,272 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 235 predicate places. [2023-01-28 12:07:22,272 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 951 transitions, 19572 flow [2023-01-28 12:07:22,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 116.62962962962963) internal successors, (3149), 27 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states 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 12:07:22,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:07:22,273 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:07:22,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 12:07:22,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:22,474 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:07:22,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:07:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2049887361, now seen corresponding path program 12 times [2023-01-28 12:07:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:07:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556569491] [2023-01-28 12:07:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:07:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:07:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:07:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:07:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:07:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556569491] [2023-01-28 12:07:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556569491] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:07:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558998930] [2023-01-28 12:07:24,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 12:07:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:07:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:07:24,476 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 12:07:24,477 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 12:07:24,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 12:07:24,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:07:24,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 12:07:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:07:24,877 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:07:24,920 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 12:07:24,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:07:25,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:07:25,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:25,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 76 [2023-01-28 12:07:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:07:25,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:07:25,926 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:25,926 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 527 treesize of output 299 [2023-01-28 12:07:26,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:26,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 19 new quantified variables, introduced 55 case distinctions, treesize of input 2570 treesize of output 2554 [2023-01-28 12:07:27,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:27,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 470 treesize of output 802 [2023-01-28 12:07:28,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:07:28,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 489 treesize of output 575 [2023-01-28 12:12:45,872 WARN L222 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 673 DAG size of output: 830 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 12:13:45,098 WARN L222 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 666 DAG size of output: 825 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 12:13:55,638 WARN L222 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 658 DAG size of output: 942 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 12:17:05,108 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 12:17:05,109 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:17:05,111 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:17:05,113 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 12:17:05,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:05,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:05,310 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 25ms.. [2023-01-28 12:17:05,312 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:17:05,312 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:17:05,312 INFO L445 BasicCegarLoop]: Path program histogram: [12, 4, 2, 1, 1] [2023-01-28 12:17:05,315 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:17:05,315 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:17:05,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:17:05 BasicIcfg [2023-01-28 12:17:05,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:17:05,317 INFO L158 Benchmark]: Toolchain (without parser) took 815113.31ms. Allocated memory was 369.1MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 329.3MB in the beginning and 910.3MB in the end (delta: -581.0MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-01-28 12:17:05,318 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:17:05,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.65ms. Allocated memory is still 369.1MB. Free memory was 329.3MB in the beginning and 317.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:17:05,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.55ms. Allocated memory is still 369.1MB. Free memory was 317.8MB in the beginning and 315.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:17:05,318 INFO L158 Benchmark]: Boogie Preprocessor took 23.03ms. Allocated memory is still 369.1MB. Free memory was 315.7MB in the beginning and 314.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:17:05,318 INFO L158 Benchmark]: RCFGBuilder took 517.97ms. Allocated memory is still 369.1MB. Free memory was 314.0MB in the beginning and 296.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 12:17:05,318 INFO L158 Benchmark]: TraceAbstraction took 814328.96ms. Allocated memory was 369.1MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 295.9MB in the beginning and 910.3MB in the end (delta: -614.4MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-01-28 12:17:05,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.65ms. Allocated memory is still 369.1MB. Free memory was 329.3MB in the beginning and 317.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.55ms. Allocated memory is still 369.1MB. Free memory was 317.8MB in the beginning and 315.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.03ms. Allocated memory is still 369.1MB. Free memory was 315.7MB in the beginning and 314.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 517.97ms. Allocated memory is still 369.1MB. Free memory was 314.0MB in the beginning and 296.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 814328.96ms. Allocated memory was 369.1MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 295.9MB in the beginning and 910.3MB in the end (delta: -614.4MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 164 PlacesBefore, 21 PlacesAfterwards, 173 TransitionsBefore, 17 TransitionsAfterwards, 3242 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 27 ConcurrentYvCompositions, 13 ChoiceCompositions, 210 TotalNumberOfCompositions, 3238 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3193, independent: 3186, independent conditional: 0, independent unconditional: 3186, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1954, independent: 1950, independent conditional: 0, independent unconditional: 1950, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3193, independent: 1236, independent conditional: 0, independent unconditional: 1236, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 1954, unknown conditional: 0, unknown unconditional: 1954] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 25ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 25ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 22 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 25ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 240 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 814.1s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 57.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 144 mSolverCounterUnknown, 1588 SdHoareTripleChecker+Valid, 25.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1588 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 24.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 471 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 291 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10232 IncrementalHoareTripleChecker+Invalid, 11138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 291 mSolverCounterUnsat, 21 mSDtfsCounter, 10232 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 798 GetRequests, 366 SyntacticMatches, 5 SemanticMatches, 427 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2370 ImplicationChecksByTransitivity, 44.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19572occurred in iteration=19, InterpolantAutomatonStates: 298, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 163.1s InterpolantComputationTime, 609 NumberOfCodeBlocks, 609 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 822 ConstructedInterpolants, 48 QuantifiedInterpolants, 20207 SizeOfPredicates, 146 NumberOfNonLiveVariables, 2734 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 45 InterpolantComputations, 7 PerfectInterpolantSequences, 64/438 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