/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:26:52,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:26:52,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:26:52,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:26:52,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:26:52,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:26:52,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:26:52,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:26:52,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:26:52,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:26:52,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:26:52,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:26:52,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:26:52,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:26:52,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:26:52,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:26:52,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:26:52,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:26:52,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:26:52,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:26:52,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:26:52,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:26:52,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:26:52,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:26:52,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:26:52,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:26:52,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:26:52,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:26:52,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:26:52,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:26:52,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:26:52,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:26:52,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:26:52,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:26:52,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:26:52,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:26:52,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:26:52,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:26:52,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:26:52,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:26:52,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:26:52,950 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 04:26:52,971 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:26:52,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:26:52,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:26:52,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:26:52,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:26:52,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:26:52,973 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:26:52,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:26:52,974 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:26:52,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:26:52,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:26:52,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:26:52,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:26:52,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:26:52,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:26:52,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:26:52,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:26:53,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:26:53,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:26:53,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:26:53,166 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:26:53,176 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:26:53,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-01-28 04:26:54,070 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:26:54,262 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:26:54,262 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-01-28 04:26:54,268 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a53ea13a/e279e2d6616c4f119ed4c26258d4ba1b/FLAG8ba431a86 [2023-01-28 04:26:54,669 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a53ea13a/e279e2d6616c4f119ed4c26258d4ba1b [2023-01-28 04:26:54,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:26:54,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:26:54,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:26:54,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:26:54,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:26:54,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfeeee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54, skipping insertion in model container [2023-01-28 04:26:54,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:26:54,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:26:54,822 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-01-28 04:26:54,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:26:54,833 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:26:54,845 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c[2599,2612] [2023-01-28 04:26:54,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:26:54,852 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:26:54,852 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:26:54,856 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:26:54,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54 WrapperNode [2023-01-28 04:26:54,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:26:54,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:26:54,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:26:54,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:26:54,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,884 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 275 [2023-01-28 04:26:54,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:26:54,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:26:54,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:26:54,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:26:54,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,902 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:26:54,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:26:54,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:26:54,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:26:54,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (1/1) ... [2023-01-28 04:26:54,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:26:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:26:54,931 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 04:26:54,946 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 04:26:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:26:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:26:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:26:54,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:26:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:26:54,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:26:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:26:54,962 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 04:26:55,030 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:26:55,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:26:55,377 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:26:55,560 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:26:55,561 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-28 04:26:55,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:26:55 BoogieIcfgContainer [2023-01-28 04:26:55,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:26:55,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:26:55,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:26:55,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:26:55,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:26:54" (1/3) ... [2023-01-28 04:26:55,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d97a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:26:55, skipping insertion in model container [2023-01-28 04:26:55,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:26:54" (2/3) ... [2023-01-28 04:26:55,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d97a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:26:55, skipping insertion in model container [2023-01-28 04:26:55,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:26:55" (3/3) ... [2023-01-28 04:26:55,569 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-01-28 04:26:55,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:26:55,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:26:55,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:26:55,646 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:26:55,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 180 transitions, 384 flow [2023-01-28 04:26:55,761 INFO L130 PetriNetUnfolder]: 16/177 cut-off events. [2023-01-28 04:26:55,762 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:26:55,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 177 events. 16/177 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 112 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-01-28 04:26:55,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 180 transitions, 384 flow [2023-01-28 04:26:55,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 352 flow [2023-01-28 04:26:55,781 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:26:55,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 352 flow [2023-01-28 04:26:55,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 352 flow [2023-01-28 04:26:55,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 352 flow [2023-01-28 04:26:55,838 INFO L130 PetriNetUnfolder]: 16/167 cut-off events. [2023-01-28 04:26:55,839 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:26:55,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 167 events. 16/167 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2023-01-28 04:26:55,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 04:27:00,800 INFO L134 LiptonReduction]: Checked pairs total: 1529 [2023-01-28 04:27:00,801 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-01-28 04:27:00,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:27:00,830 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;@5e10474, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:27:00,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:27:00,842 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-01-28 04:27:00,842 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:27:00,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:27:00,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:27:00,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:27:00,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:27:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash -118065051, now seen corresponding path program 1 times [2023-01-28 04:27:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:27:00,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786849021] [2023-01-28 04:27:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:27:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:27:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:27:01,251 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 04:27:01,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:27:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786849021] [2023-01-28 04:27:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786849021] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:27:01,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:27:01,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:27:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570674989] [2023-01-28 04:27:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:27:01,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:27:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:27:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:27:01,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:27:01,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-01-28 04:27:01,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 04:27:01,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:27:01,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-01-28 04:27:01,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:27:01,426 INFO L130 PetriNetUnfolder]: 343/476 cut-off events. [2023-01-28 04:27:01,426 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-01-28 04:27:01,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 476 events. 343/476 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1477 event pairs, 133 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-01-28 04:27:01,430 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-01-28 04:27:01,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 164 flow [2023-01-28 04:27:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:27:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:27:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 607 transitions. [2023-01-28 04:27:01,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42988668555240794 [2023-01-28 04:27:01,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 607 transitions. [2023-01-28 04:27:01,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 607 transitions. [2023-01-28 04:27:01,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:27:01,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 607 transitions. [2023-01-28 04:27:01,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states 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 04:27:01,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states 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 04:27:01,466 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states 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 04:27:01,467 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 4 states and 607 transitions. [2023-01-28 04:27:01,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 164 flow [2023-01-28 04:27:01,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 04:27:01,470 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 72 flow [2023-01-28 04:27:01,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 04:27:01,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-01-28 04:27:01,474 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 72 flow [2023-01-28 04:27:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 04:27:01,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:27:01,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:27:01,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:27:01,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:27:01,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:27:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash -628194304, now seen corresponding path program 1 times [2023-01-28 04:27:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:27:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585262095] [2023-01-28 04:27:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:27:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:27:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:27:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:27:01,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:27:01,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585262095] [2023-01-28 04:27:01,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585262095] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:27:01,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:27:01,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 04:27:01,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331404053] [2023-01-28 04:27:01,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:27:01,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 04:27:01,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:27:01,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 04:27:01,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 04:27:01,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-01-28 04:27:01,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 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 04:27:01,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:27:01,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-01-28 04:27:01,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:27:01,740 INFO L130 PetriNetUnfolder]: 344/481 cut-off events. [2023-01-28 04:27:01,740 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-01-28 04:27:01,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 481 events. 344/481 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1492 event pairs, 133 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 323. Up to 373 conditions per place. [2023-01-28 04:27:01,743 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 31 selfloop transitions, 5 changer transitions 3/41 dead transitions. [2023-01-28 04:27:01,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 180 flow [2023-01-28 04:27:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 04:27:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 04:27:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2023-01-28 04:27:01,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362134088762984 [2023-01-28 04:27:01,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2023-01-28 04:27:01,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2023-01-28 04:27:01,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:27:01,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2023-01-28 04:27:01,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 04:27:01,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states 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 04:27:01,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states 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 04:27:01,751 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 72 flow. Second operand 6 states and 767 transitions. [2023-01-28 04:27:01,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 180 flow [2023-01-28 04:27:01,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 04:27:01,752 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 96 flow [2023-01-28 04:27:01,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-28 04:27:01,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-01-28 04:27:01,753 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 96 flow [2023-01-28 04:27:01,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 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 04:27:01,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:27:01,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:27:01,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:27:01,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:27:01,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:27:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1446722701, now seen corresponding path program 1 times [2023-01-28 04:27:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:27:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566362436] [2023-01-28 04:27:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:27:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:27:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:27:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:27:01,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:27:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566362436] [2023-01-28 04:27:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566362436] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:27:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871322489] [2023-01-28 04:27:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:27:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:27:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:27:01,875 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 04:27:01,880 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 04:27:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:27:01,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:27:01,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:27:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:27:02,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:27:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:27:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871322489] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:27:02,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:27:02,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 04:27:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587955021] [2023-01-28 04:27:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:27:02,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:27:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:27:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:27:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 04:27:02,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 353 [2023-01-28 04:27:02,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 04:27:02,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:27:02,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 353 [2023-01-28 04:27:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:27:02,244 INFO L130 PetriNetUnfolder]: 312/453 cut-off events. [2023-01-28 04:27:02,244 INFO L131 PetriNetUnfolder]: For 114/150 co-relation queries the response was YES. [2023-01-28 04:27:02,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 453 events. 312/453 cut-off events. For 114/150 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1498 event pairs, 134 based on Foata normal form. 36/382 useless extension candidates. Maximal degree in co-relation 1003. Up to 352 conditions per place. [2023-01-28 04:27:02,246 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 34 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-01-28 04:27:02,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 202 flow [2023-01-28 04:27:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:27:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:27:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 661 transitions. [2023-01-28 04:27:02,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3745042492917847 [2023-01-28 04:27:02,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 661 transitions. [2023-01-28 04:27:02,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 661 transitions. [2023-01-28 04:27:02,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:27:02,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 661 transitions. [2023-01-28 04:27:02,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 04:27:02,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states 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 04:27:02,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states 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 04:27:02,252 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 96 flow. Second operand 5 states and 661 transitions. [2023-01-28 04:27:02,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 202 flow [2023-01-28 04:27:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 196 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 04:27:02,254 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 106 flow [2023-01-28 04:27:02,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-01-28 04:27:02,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-01-28 04:27:02,254 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 106 flow [2023-01-28 04:27:02,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 04:27:02,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:27:02,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:27:02,263 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 04:27:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:27:02,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:27:02,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:27:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 768134593, now seen corresponding path program 1 times [2023-01-28 04:27:02,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:27:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943290132] [2023-01-28 04:27:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:27:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:27:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:27:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:27:03,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:27:03,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943290132] [2023-01-28 04:27:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943290132] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:27:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838699462] [2023-01-28 04:27:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:27:03,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:27:03,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:27:03,961 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 04:27:03,963 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 04:27:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:27:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 75 conjunts are in the unsatisfiable core [2023-01-28 04:27:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:27:04,251 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 04:27:04,307 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 04:27:04,361 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 04:27:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:27:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:27:04,613 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:27:04,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-28 04:27:04,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:27:04,762 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 81 [2023-01-28 04:27:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:27:04,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:27:05,522 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:27:05,522 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 111 treesize of output 76 [2023-01-28 04:27:05,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:27:05,744 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 9568246 treesize of output 8519738 [2023-01-28 04:27:06,531 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:27:06,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2070 treesize of output 1966 [2023-01-28 04:27:06,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:27:06,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1910 treesize of output 1646 [2023-01-28 04:27:06,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:27:06,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1590 treesize of output 1214 [2023-01-28 04:28:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838699462] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:19,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:19,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2023-01-28 04:28:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988676118] [2023-01-28 04:28:19,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:19,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-01-28 04:28:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-01-28 04:28:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1453, Unknown=22, NotChecked=0, Total=1640 [2023-01-28 04:28:19,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:28:20,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 106 flow. Second operand has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states 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 04:28:20,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:20,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:28:20,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:23,762 INFO L130 PetriNetUnfolder]: 1358/2022 cut-off events. [2023-01-28 04:28:23,762 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2023-01-28 04:28:23,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2022 events. 1358/2022 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8523 event pairs, 124 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 3147. Up to 853 conditions per place. [2023-01-28 04:28:23,771 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 195 selfloop transitions, 89 changer transitions 4/288 dead transitions. [2023-01-28 04:28:23,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 288 transitions, 1407 flow [2023-01-28 04:28:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 04:28:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 04:28:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3156 transitions. [2023-01-28 04:28:23,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25544314042897615 [2023-01-28 04:28:23,778 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3156 transitions. [2023-01-28 04:28:23,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3156 transitions. [2023-01-28 04:28:23,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:23,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3156 transitions. [2023-01-28 04:28:23,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 90.17142857142858) internal successors, (3156), 35 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states 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 04:28:23,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states 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 04:28:23,796 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 353.0) internal successors, (12708), 36 states have internal predecessors, (12708), 0 states have call successors, (0), 0 states 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 04:28:23,796 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 106 flow. Second operand 35 states and 3156 transitions. [2023-01-28 04:28:23,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 288 transitions, 1407 flow [2023-01-28 04:28:23,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 288 transitions, 1383 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-01-28 04:28:23,802 INFO L231 Difference]: Finished difference. Result has 77 places, 115 transitions, 618 flow [2023-01-28 04:28:23,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=618, PETRI_PLACES=77, PETRI_TRANSITIONS=115} [2023-01-28 04:28:23,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2023-01-28 04:28:23,803 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 115 transitions, 618 flow [2023-01-28 04:28:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 83.48780487804878) internal successors, (3423), 41 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states 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 04:28:23,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:23,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:23,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 04:28:24,009 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,SelfDestructingSolverStorable3 [2023-01-28 04:28:24,012 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:24,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash -644630665, now seen corresponding path program 2 times [2023-01-28 04:28:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:24,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981433931] [2023-01-28 04:28:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981433931] [2023-01-28 04:28:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981433931] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862432084] [2023-01-28 04:28:24,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:28:24,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:24,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:25,000 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 04:28:25,004 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 04:28:25,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:28:25,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:28:25,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 04:28:25,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:25,488 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-28 04:28:25,489 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-28 04:28:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:25,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:25,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:25,635 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-28 04:28:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862432084] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:25,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:25,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-01-28 04:28:25,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985673018] [2023-01-28 04:28:25,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:28:25,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:28:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 04:28:25,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-28 04:28:25,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 115 transitions, 618 flow. Second operand has 34 states, 34 states have (on average 86.79411764705883) internal successors, (2951), 34 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states 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 04:28:25,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:25,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-28 04:28:25,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:28,769 INFO L130 PetriNetUnfolder]: 2763/4217 cut-off events. [2023-01-28 04:28:28,769 INFO L131 PetriNetUnfolder]: For 5950/5950 co-relation queries the response was YES. [2023-01-28 04:28:28,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 4217 events. 2763/4217 cut-off events. For 5950/5950 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21647 event pairs, 162 based on Foata normal form. 46/4257 useless extension candidates. Maximal degree in co-relation 13956. Up to 1788 conditions per place. [2023-01-28 04:28:28,794 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 238 selfloop transitions, 227 changer transitions 23/488 dead transitions. [2023-01-28 04:28:28,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 488 transitions, 3349 flow [2023-01-28 04:28:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 04:28:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 04:28:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4304 transitions. [2023-01-28 04:28:28,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25941775661503225 [2023-01-28 04:28:28,804 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4304 transitions. [2023-01-28 04:28:28,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4304 transitions. [2023-01-28 04:28:28,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:28,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4304 transitions. [2023-01-28 04:28:28,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 91.57446808510639) internal successors, (4304), 47 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states 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 04:28:28,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 0 states have call successors, (0), 0 states 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 04:28:28,829 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 353.0) internal successors, (16944), 48 states have internal predecessors, (16944), 0 states have call successors, (0), 0 states 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 04:28:28,829 INFO L175 Difference]: Start difference. First operand has 77 places, 115 transitions, 618 flow. Second operand 47 states and 4304 transitions. [2023-01-28 04:28:28,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 488 transitions, 3349 flow [2023-01-28 04:28:28,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 488 transitions, 3210 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-01-28 04:28:28,853 INFO L231 Difference]: Finished difference. Result has 138 places, 321 transitions, 2430 flow [2023-01-28 04:28:28,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2430, PETRI_PLACES=138, PETRI_TRANSITIONS=321} [2023-01-28 04:28:28,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2023-01-28 04:28:28,854 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 321 transitions, 2430 flow [2023-01-28 04:28:28,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 86.79411764705883) internal successors, (2951), 34 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states 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 04:28:28,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:28,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:28,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 04:28:29,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:29,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:29,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1317014283, now seen corresponding path program 3 times [2023-01-28 04:28:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126100615] [2023-01-28 04:28:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:29,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126100615] [2023-01-28 04:28:29,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126100615] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:29,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412426462] [2023-01-28 04:28:29,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:28:29,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:29,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:29,942 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 04:28:29,957 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 04:28:30,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:28:30,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:28:30,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 58 conjunts are in the unsatisfiable core [2023-01-28 04:28:30,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:30,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:30,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-01-28 04:28:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:30,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:30,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:30,482 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-28 04:28:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412426462] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:30,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-01-28 04:28:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797252641] [2023-01-28 04:28:30,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:30,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:28:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:28:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-01-28 04:28:30,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-28 04:28:30,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 321 transitions, 2430 flow. Second operand has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states 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 04:28:30,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:30,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-28 04:28:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:31,873 INFO L130 PetriNetUnfolder]: 3091/4725 cut-off events. [2023-01-28 04:28:31,873 INFO L131 PetriNetUnfolder]: For 20115/20115 co-relation queries the response was YES. [2023-01-28 04:28:31,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22519 conditions, 4725 events. 3091/4725 cut-off events. For 20115/20115 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24498 event pairs, 512 based on Foata normal form. 1/4717 useless extension candidates. Maximal degree in co-relation 22443. Up to 3936 conditions per place. [2023-01-28 04:28:31,907 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 280 selfloop transitions, 178 changer transitions 1/459 dead transitions. [2023-01-28 04:28:31,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 459 transitions, 4361 flow [2023-01-28 04:28:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:28:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:28:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1464 transitions. [2023-01-28 04:28:31,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25920679886685555 [2023-01-28 04:28:31,911 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1464 transitions. [2023-01-28 04:28:31,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1464 transitions. [2023-01-28 04:28:31,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:31,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1464 transitions. [2023-01-28 04:28:31,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.5) internal successors, (1464), 16 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 04:28:31,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states 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 04:28:31,918 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states 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 04:28:31,918 INFO L175 Difference]: Start difference. First operand has 138 places, 321 transitions, 2430 flow. Second operand 16 states and 1464 transitions. [2023-01-28 04:28:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 459 transitions, 4361 flow [2023-01-28 04:28:32,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 459 transitions, 4023 flow, removed 158 selfloop flow, removed 8 redundant places. [2023-01-28 04:28:32,056 INFO L231 Difference]: Finished difference. Result has 151 places, 403 transitions, 3362 flow [2023-01-28 04:28:32,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3362, PETRI_PLACES=151, PETRI_TRANSITIONS=403} [2023-01-28 04:28:32,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2023-01-28 04:28:32,058 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 403 transitions, 3362 flow [2023-01-28 04:28:32,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states 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 04:28:32,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:32,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:32,067 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 04:28:32,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:32,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:32,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1906045491, now seen corresponding path program 4 times [2023-01-28 04:28:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:32,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652292152] [2023-01-28 04:28:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:32,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652292152] [2023-01-28 04:28:33,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652292152] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886986161] [2023-01-28 04:28:33,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:28:33,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:33,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:33,416 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 04:28:33,464 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 04:28:33,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:28:33,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:28:33,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 04:28:33,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:33,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:33,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-01-28 04:28:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:33,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:33,963 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:33,963 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-28 04:28:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886986161] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:34,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-01-28 04:28:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695743771] [2023-01-28 04:28:34,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:28:34,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:28:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-01-28 04:28:34,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:28:34,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 403 transitions, 3362 flow. Second operand has 31 states, 31 states have (on average 83.83870967741936) internal successors, (2599), 31 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states 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 04:28:34,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:34,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:28:34,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:35,570 INFO L130 PetriNetUnfolder]: 3211/4940 cut-off events. [2023-01-28 04:28:35,570 INFO L131 PetriNetUnfolder]: For 25595/25595 co-relation queries the response was YES. [2023-01-28 04:28:35,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24901 conditions, 4940 events. 3211/4940 cut-off events. For 25595/25595 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26145 event pairs, 523 based on Foata normal form. 1/4933 useless extension candidates. Maximal degree in co-relation 24772. Up to 4245 conditions per place. [2023-01-28 04:28:35,606 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 281 selfloop transitions, 239 changer transitions 6/526 dead transitions. [2023-01-28 04:28:35,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 526 transitions, 5497 flow [2023-01-28 04:28:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 04:28:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 04:28:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1487 transitions. [2023-01-28 04:28:35,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24779203466088986 [2023-01-28 04:28:35,610 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1487 transitions. [2023-01-28 04:28:35,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1487 transitions. [2023-01-28 04:28:35,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:35,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1487 transitions. [2023-01-28 04:28:35,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 87.47058823529412) internal successors, (1487), 17 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:28:35,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states 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 04:28:35,626 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 353.0) internal successors, (6354), 18 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states 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 04:28:35,626 INFO L175 Difference]: Start difference. First operand has 151 places, 403 transitions, 3362 flow. Second operand 17 states and 1487 transitions. [2023-01-28 04:28:35,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 526 transitions, 5497 flow [2023-01-28 04:28:35,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 526 transitions, 5368 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-01-28 04:28:35,704 INFO L231 Difference]: Finished difference. Result has 167 places, 489 transitions, 4810 flow [2023-01-28 04:28:35,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4810, PETRI_PLACES=167, PETRI_TRANSITIONS=489} [2023-01-28 04:28:35,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2023-01-28 04:28:35,706 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 489 transitions, 4810 flow [2023-01-28 04:28:35,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 83.83870967741936) internal successors, (2599), 31 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states 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 04:28:35,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:35,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:35,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 04:28:35,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:35,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:35,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1960108977, now seen corresponding path program 5 times [2023-01-28 04:28:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041489108] [2023-01-28 04:28:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041489108] [2023-01-28 04:28:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041489108] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809654674] [2023-01-28 04:28:36,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:28:36,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:36,866 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 04:28:36,869 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 04:28:36,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:28:36,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:28:36,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-28 04:28:36,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:37,276 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:28:37,287 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-01-28 04:28:37,287 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-01-28 04:28:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:37,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:37,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:37,398 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-28 04:28:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:37,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809654674] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:37,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-01-28 04:28:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165763187] [2023-01-28 04:28:37,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:37,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:28:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:28:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-01-28 04:28:37,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:28:37,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 489 transitions, 4810 flow. Second operand has 30 states, 30 states have (on average 84.03333333333333) internal successors, (2521), 30 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states 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 04:28:37,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:37,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:28:37,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:40,810 INFO L130 PetriNetUnfolder]: 4979/7630 cut-off events. [2023-01-28 04:28:40,811 INFO L131 PetriNetUnfolder]: For 46355/46355 co-relation queries the response was YES. [2023-01-28 04:28:40,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40374 conditions, 7630 events. 4979/7630 cut-off events. For 46355/46355 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 43784 event pairs, 508 based on Foata normal form. 5/7627 useless extension candidates. Maximal degree in co-relation 40161. Up to 2317 conditions per place. [2023-01-28 04:28:40,860 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 345 selfloop transitions, 531 changer transitions 17/893 dead transitions. [2023-01-28 04:28:40,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 893 transitions, 9731 flow [2023-01-28 04:28:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 04:28:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 04:28:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3842 transitions. [2023-01-28 04:28:40,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25311285328414257 [2023-01-28 04:28:40,865 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3842 transitions. [2023-01-28 04:28:40,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3842 transitions. [2023-01-28 04:28:40,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:40,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3842 transitions. [2023-01-28 04:28:40,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 89.34883720930233) internal successors, (3842), 43 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states 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 04:28:40,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 0 states have call successors, (0), 0 states 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 04:28:40,881 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 353.0) internal successors, (15532), 44 states have internal predecessors, (15532), 0 states have call successors, (0), 0 states 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 04:28:40,881 INFO L175 Difference]: Start difference. First operand has 167 places, 489 transitions, 4810 flow. Second operand 43 states and 3842 transitions. [2023-01-28 04:28:40,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 893 transitions, 9731 flow [2023-01-28 04:28:41,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 893 transitions, 9446 flow, removed 111 selfloop flow, removed 5 redundant places. [2023-01-28 04:28:41,067 INFO L231 Difference]: Finished difference. Result has 220 places, 681 transitions, 8172 flow [2023-01-28 04:28:41,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=8172, PETRI_PLACES=220, PETRI_TRANSITIONS=681} [2023-01-28 04:28:41,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2023-01-28 04:28:41,068 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 681 transitions, 8172 flow [2023-01-28 04:28:41,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 84.03333333333333) internal successors, (2521), 30 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states 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 04:28:41,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:41,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:41,074 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 04:28:41,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:41,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:41,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash -555652735, now seen corresponding path program 6 times [2023-01-28 04:28:41,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:41,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199769680] [2023-01-28 04:28:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:41,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199769680] [2023-01-28 04:28:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199769680] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635178223] [2023-01-28 04:28:42,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:28:42,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:42,117 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 04:28:42,119 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 04:28:42,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:28:42,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:28:42,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 04:28:42,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:42,675 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-28 04:28:42,675 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-28 04:28:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:42,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:42,814 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:42,814 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-28 04:28:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:43,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635178223] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:43,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:43,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-01-28 04:28:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149788414] [2023-01-28 04:28:43,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:28:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:28:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 04:28:43,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-28 04:28:43,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 681 transitions, 8172 flow. Second operand has 34 states, 34 states have (on average 86.82352941176471) internal successors, (2952), 34 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states 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 04:28:43,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:43,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-28 04:28:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:46,954 INFO L130 PetriNetUnfolder]: 7403/11343 cut-off events. [2023-01-28 04:28:46,955 INFO L131 PetriNetUnfolder]: For 79052/79052 co-relation queries the response was YES. [2023-01-28 04:28:46,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66375 conditions, 11343 events. 7403/11343 cut-off events. For 79052/79052 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 69831 event pairs, 394 based on Foata normal form. 2/11343 useless extension candidates. Maximal degree in co-relation 66177. Up to 4430 conditions per place. [2023-01-28 04:28:47,029 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 516 selfloop transitions, 735 changer transitions 10/1261 dead transitions. [2023-01-28 04:28:47,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1261 transitions, 16505 flow [2023-01-28 04:28:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 04:28:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 04:28:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3607 transitions. [2023-01-28 04:28:47,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26200334132345465 [2023-01-28 04:28:47,033 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3607 transitions. [2023-01-28 04:28:47,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3607 transitions. [2023-01-28 04:28:47,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:47,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3607 transitions. [2023-01-28 04:28:47,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 92.48717948717949) internal successors, (3607), 39 states have internal predecessors, (3607), 0 states have call successors, (0), 0 states 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 04:28:47,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states 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 04:28:47,044 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 353.0) internal successors, (14120), 40 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states 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 04:28:47,045 INFO L175 Difference]: Start difference. First operand has 220 places, 681 transitions, 8172 flow. Second operand 39 states and 3607 transitions. [2023-01-28 04:28:47,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1261 transitions, 16505 flow [2023-01-28 04:28:47,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1261 transitions, 15629 flow, removed 331 selfloop flow, removed 14 redundant places. [2023-01-28 04:28:47,680 INFO L231 Difference]: Finished difference. Result has 266 places, 1071 transitions, 14974 flow [2023-01-28 04:28:47,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14974, PETRI_PLACES=266, PETRI_TRANSITIONS=1071} [2023-01-28 04:28:47,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2023-01-28 04:28:47,682 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 1071 transitions, 14974 flow [2023-01-28 04:28:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 86.82352941176471) internal successors, (2952), 34 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states 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 04:28:47,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:47,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:47,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 04:28:47,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:47,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:47,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 539869495, now seen corresponding path program 7 times [2023-01-28 04:28:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549086943] [2023-01-28 04:28:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:47,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:48,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549086943] [2023-01-28 04:28:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549086943] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307223870] [2023-01-28 04:28:48,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:28:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:48,906 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 04:28:48,912 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 04:28:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:49,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 04:28:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:49,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:28:49,316 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2023-01-28 04:28:49,316 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 25 [2023-01-28 04:28:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:49,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:49,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:28:49,377 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 86 [2023-01-28 04:28:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:28:49,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307223870] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:28:49,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:28:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-01-28 04:28:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406929881] [2023-01-28 04:28:49,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:28:49,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:28:49,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:28:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:28:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-01-28 04:28:49,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:28:49,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1071 transitions, 14974 flow. Second operand has 30 states, 30 states have (on average 84.0) internal successors, (2520), 30 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 04:28:49,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:28:49,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:28:49,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:28:53,461 INFO L130 PetriNetUnfolder]: 7704/11866 cut-off events. [2023-01-28 04:28:53,461 INFO L131 PetriNetUnfolder]: For 127931/127931 co-relation queries the response was YES. [2023-01-28 04:28:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80676 conditions, 11866 events. 7704/11866 cut-off events. For 127931/127931 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 73630 event pairs, 1190 based on Foata normal form. 2/11866 useless extension candidates. Maximal degree in co-relation 80197. Up to 9995 conditions per place. [2023-01-28 04:28:53,583 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 792 selfloop transitions, 436 changer transitions 3/1231 dead transitions. [2023-01-28 04:28:53,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1231 transitions, 19249 flow [2023-01-28 04:28:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 04:28:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 04:28:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2656 transitions. [2023-01-28 04:28:53,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25080264400377716 [2023-01-28 04:28:53,586 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2656 transitions. [2023-01-28 04:28:53,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2656 transitions. [2023-01-28 04:28:53,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:28:53,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2656 transitions. [2023-01-28 04:28:53,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 88.53333333333333) internal successors, (2656), 30 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states 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 04:28:53,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states 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 04:28:53,594 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states 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 04:28:53,594 INFO L175 Difference]: Start difference. First operand has 266 places, 1071 transitions, 14974 flow. Second operand 30 states and 2656 transitions. [2023-01-28 04:28:53,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1231 transitions, 19249 flow [2023-01-28 04:28:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1231 transitions, 18908 flow, removed 136 selfloop flow, removed 12 redundant places. [2023-01-28 04:28:54,689 INFO L231 Difference]: Finished difference. Result has 288 places, 1115 transitions, 16568 flow [2023-01-28 04:28:54,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=14641, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16568, PETRI_PLACES=288, PETRI_TRANSITIONS=1115} [2023-01-28 04:28:54,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2023-01-28 04:28:54,690 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1115 transitions, 16568 flow [2023-01-28 04:28:54,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 84.0) internal successors, (2520), 30 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states 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 04:28:54,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:28:54,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:28:54,696 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 04:28:54,898 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,SelfDestructingSolverStorable9 [2023-01-28 04:28:54,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:28:54,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:28:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash -680043111, now seen corresponding path program 8 times [2023-01-28 04:28:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:28:54,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242663961] [2023-01-28 04:28:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:28:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:28:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:28:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:55,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:28:55,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242663961] [2023-01-28 04:28:55,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242663961] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:28:55,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600885227] [2023-01-28 04:28:55,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:28:55,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:28:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:28:55,971 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 04:28:55,973 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 04:28:56,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:28:56,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:28:56,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 77 conjunts are in the unsatisfiable core [2023-01-28 04:28:56,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:28:56,260 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 04:28:56,321 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 04:28:56,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:28:56,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:28:56,539 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:28:56,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-28 04:28:56,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:28:56,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:28:56,600 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:28:56,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2023-01-28 04:28:56,710 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-28 04:28:56,710 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-28 04:28:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:28:56,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:28:58,950 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int))) (or (<= c_~N~0 ~M~0) (= c_~res1~0 (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)) c_~res2~0))) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-01-28 04:29:00,979 WARN L839 $PredicateComparison]: unable to prove that (forall ((~M~0 Int) (v_ArrVal_522 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (or (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_521) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_522)) (.cse1 (* ~M~0 4))) (+ (select (select .cse0 c_~B~0.base) (+ .cse1 c_~B~0.offset)) c_~res2~0 (select (select .cse0 c_~A~0.base) (+ c_~A~0.offset .cse1)))) c_~res1~0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) is different from false [2023-01-28 04:29:08,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:29:08,386 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 105 treesize of output 70 [2023-01-28 04:29:08,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:29:08,482 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 38390 treesize of output 32314 [2023-01-28 04:29:08,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:29:08,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2006 treesize of output 1822 [2023-01-28 04:29:08,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:29:08,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1814 treesize of output 1438 [2023-01-28 04:29:08,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:29:08,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1430 treesize of output 1262 [2023-01-28 04:29:40,921 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:41,161 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:29:42,302 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:29:42,403 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:42,445 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:42,716 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:42,846 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:29:42,924 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:43,036 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:29:43,088 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:43,131 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:43,195 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:43,246 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:43,282 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:43,356 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:43,483 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:44,334 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:29:44,348 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:29:44,781 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:44,951 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:45,020 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:45,092 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:45,173 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:45,231 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:45,285 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:45,493 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:45,781 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:45,899 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:46,046 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:46,312 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:29:47,200 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:47,387 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:47,767 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:47,985 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:48,217 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:48,651 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:48,845 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:48,906 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:49,052 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:49,122 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:49,306 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:49,473 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:49,878 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:50,307 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:50,483 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:50,615 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:51,024 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:51,135 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:51,210 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:51,446 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:29:51,705 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:51,840 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:52,286 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:52,662 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:52,876 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:29:53,077 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:53,419 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:29:53,750 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:29:54,811 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:29:55,709 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:56,098 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:29:56,498 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:29:58,150 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:29:58,810 WARN L718 sPolynomialRelations]: Constructing 16384(two to the power of 14 dual juncts. [2023-01-28 04:30:02,680 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:04,168 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:04,796 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:06,437 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:06,732 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:07,392 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:07,641 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:07,761 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:08,027 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:08,279 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:08,910 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:09,037 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:09,083 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:09,197 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:09,253 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:09,399 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:09,525 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:09,631 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:10,062 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:10,747 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:11,012 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:11,295 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:12,802 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:13,588 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:13,847 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:14,459 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:14,731 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:14,778 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:14,895 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:15,259 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:15,370 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:15,503 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:15,735 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:15,826 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:15,976 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:16,052 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:16,067 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:16,184 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:16,424 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:16,443 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:16,506 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:16,552 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:16,669 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:16,803 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:16,929 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:17,082 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:17,216 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:17,617 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:17,738 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:17,848 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:17,879 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:17,908 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:17,933 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:18,001 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,042 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:18,079 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:18,095 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,269 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:18,297 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,348 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:18,406 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:18,570 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:18,623 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,658 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,703 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:18,758 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,792 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,867 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:18,896 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:18,960 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:19,015 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:19,046 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:19,100 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:19,135 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:19,163 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:19,501 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:20,764 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:20,818 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:21,568 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:22,615 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:22,687 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:22,711 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:22,740 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:22,766 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:22,784 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:22,798 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:22,831 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:22,880 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:22,934 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:23,455 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:30,226 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:30,363 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:31,466 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:31,548 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:32,199 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:32,296 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:32,600 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:32,783 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:32,834 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:32,863 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:32,875 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:32,982 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:33,251 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:33,344 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:33,358 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:33,400 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:33,439 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:33,609 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:33,939 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:34,214 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:34,332 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:34,457 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:34,600 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:34,717 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:34,824 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:35,027 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:35,045 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:35,119 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:35,132 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:35,205 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:35,400 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:35,420 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:35,483 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:35,536 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:35,746 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:35,796 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:35,817 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:35,893 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:36,008 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:36,039 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:36,241 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:36,286 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:36,440 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:36,716 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:36,985 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:37,030 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:37,237 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:37,326 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:37,377 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:37,920 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:38,078 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:38,218 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:38,966 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:40,445 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:42,087 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:44,007 WARN L718 sPolynomialRelations]: Constructing 4096(two to the power of 12 dual juncts. [2023-01-28 04:30:44,698 WARN L718 sPolynomialRelations]: Constructing 8192(two to the power of 13 dual juncts. [2023-01-28 04:30:44,784 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:45,082 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:45,364 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:45,736 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:45,783 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:46,034 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:46,342 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:46,444 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:46,644 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:47,004 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:47,392 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:47,469 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:47,523 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:47,549 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:47,933 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:47,957 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:48,036 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:48,047 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:48,391 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:48,497 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:48,535 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:48,638 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:49,004 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:49,113 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:49,226 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:49,625 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:49,636 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:50,229 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:50,273 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:52,710 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:52,732 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:52,824 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:53,069 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:53,079 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:53,090 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:53,420 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:53,886 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:53,903 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:53,917 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:54,226 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:54,260 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:54,300 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:54,445 WARN L718 sPolynomialRelations]: Constructing 2048(two to the power of 11 dual juncts. [2023-01-28 04:30:54,468 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:54,594 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:54,703 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2023-01-28 04:30:54,829 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:54,926 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:54,991 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:55,080 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:55,303 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:55,336 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:55,373 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:55,401 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:55,430 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:55,479 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:55,505 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:57,977 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:57,992 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:58,012 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 04:30:58,067 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:30:58,121 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:58,139 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:58,335 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:30:59,955 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:30:59,977 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:31:00,016 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:31:00,170 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:31:00,197 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:31:00,217 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:31:00,245 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:31:00,256 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:31:00,280 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:31:01,754 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:31:02,223 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:31:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-28 04:31:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600885227] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:31:18,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:31:18,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 33 [2023-01-28 04:31:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165987673] [2023-01-28 04:31:18,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:31:18,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 04:31:18,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 04:31:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=923, Unknown=21, NotChecked=126, Total=1190 [2023-01-28 04:31:18,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:31:18,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1115 transitions, 16568 flow. Second operand has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 04:31:18,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:18,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:31:18,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:27,158 INFO L130 PetriNetUnfolder]: 8812/13691 cut-off events. [2023-01-28 04:31:27,158 INFO L131 PetriNetUnfolder]: For 151268/151268 co-relation queries the response was YES. [2023-01-28 04:31:27,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94097 conditions, 13691 events. 8812/13691 cut-off events. For 151268/151268 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 89378 event pairs, 671 based on Foata normal form. 8/13697 useless extension candidates. Maximal degree in co-relation 93746. Up to 7849 conditions per place. [2023-01-28 04:31:27,291 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 719 selfloop transitions, 774 changer transitions 11/1504 dead transitions. [2023-01-28 04:31:27,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1504 transitions, 24011 flow [2023-01-28 04:31:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 04:31:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 04:31:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2355 transitions. [2023-01-28 04:31:27,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25659185007626933 [2023-01-28 04:31:27,295 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2355 transitions. [2023-01-28 04:31:27,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2355 transitions. [2023-01-28 04:31:27,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:27,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2355 transitions. [2023-01-28 04:31:27,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 90.57692307692308) internal successors, (2355), 26 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states 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 04:31:27,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states 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 04:31:27,305 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 353.0) internal successors, (9531), 27 states have internal predecessors, (9531), 0 states have call successors, (0), 0 states 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 04:31:27,305 INFO L175 Difference]: Start difference. First operand has 288 places, 1115 transitions, 16568 flow. Second operand 26 states and 2355 transitions. [2023-01-28 04:31:27,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1504 transitions, 24011 flow [2023-01-28 04:31:28,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1504 transitions, 23736 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-01-28 04:31:28,431 INFO L231 Difference]: Finished difference. Result has 309 places, 1263 transitions, 20815 flow [2023-01-28 04:31:28,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16298, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=20815, PETRI_PLACES=309, PETRI_TRANSITIONS=1263} [2023-01-28 04:31:28,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2023-01-28 04:31:28,432 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1263 transitions, 20815 flow [2023-01-28 04:31:28,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 83.8) internal successors, (2933), 35 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states 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 04:31:28,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:28,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:28,438 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 04:31:28,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:28,639 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:31:28,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2060531317, now seen corresponding path program 9 times [2023-01-28 04:31:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285697306] [2023-01-28 04:31:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:29,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:29,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285697306] [2023-01-28 04:31:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285697306] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:29,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885289429] [2023-01-28 04:31:29,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:31:29,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:29,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:29,649 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 04:31:29,678 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 04:31:29,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 04:31:29,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:31:29,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 63 conjunts are in the unsatisfiable core [2023-01-28 04:31:29,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:30,190 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-28 04:31:30,193 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-28 04:31:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:30,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:30,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:30,386 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-01-28 04:31:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:30,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885289429] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:31:30,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:31:30,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 32 [2023-01-28 04:31:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729589585] [2023-01-28 04:31:30,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:31:30,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 04:31:30,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:30,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 04:31:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 04:31:30,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:31:30,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1263 transitions, 20815 flow. Second operand has 34 states, 34 states have (on average 83.91176470588235) internal successors, (2853), 34 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states 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 04:31:30,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:30,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:31:30,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:36,809 INFO L130 PetriNetUnfolder]: 9416/14648 cut-off events. [2023-01-28 04:31:36,809 INFO L131 PetriNetUnfolder]: For 227922/227922 co-relation queries the response was YES. [2023-01-28 04:31:36,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113911 conditions, 14648 events. 9416/14648 cut-off events. For 227922/227922 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 96009 event pairs, 1286 based on Foata normal form. 3/14650 useless extension candidates. Maximal degree in co-relation 113442. Up to 11621 conditions per place. [2023-01-28 04:31:36,963 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 948 selfloop transitions, 580 changer transitions 10/1538 dead transitions. [2023-01-28 04:31:36,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1538 transitions, 27718 flow [2023-01-28 04:31:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 04:31:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 04:31:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3272 transitions. [2023-01-28 04:31:36,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25051680575759894 [2023-01-28 04:31:36,966 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3272 transitions. [2023-01-28 04:31:36,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3272 transitions. [2023-01-28 04:31:36,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:36,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3272 transitions. [2023-01-28 04:31:36,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 88.43243243243244) internal successors, (3272), 37 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states 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 04:31:36,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states 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 04:31:36,975 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 353.0) internal successors, (13414), 38 states have internal predecessors, (13414), 0 states have call successors, (0), 0 states 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 04:31:36,975 INFO L175 Difference]: Start difference. First operand has 309 places, 1263 transitions, 20815 flow. Second operand 37 states and 3272 transitions. [2023-01-28 04:31:36,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1538 transitions, 27718 flow [2023-01-28 04:31:39,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1538 transitions, 27016 flow, removed 166 selfloop flow, removed 12 redundant places. [2023-01-28 04:31:39,220 INFO L231 Difference]: Finished difference. Result has 345 places, 1401 transitions, 24282 flow [2023-01-28 04:31:39,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20183, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=24282, PETRI_PLACES=345, PETRI_TRANSITIONS=1401} [2023-01-28 04:31:39,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-01-28 04:31:39,222 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 1401 transitions, 24282 flow [2023-01-28 04:31:39,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 83.91176470588235) internal successors, (2853), 34 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states 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 04:31:39,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:39,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:39,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 04:31:39,428 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,SelfDestructingSolverStorable11 [2023-01-28 04:31:39,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:31:39,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:39,429 INFO L85 PathProgramCache]: Analyzing trace with hash 952548253, now seen corresponding path program 10 times [2023-01-28 04:31:39,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:39,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194356526] [2023-01-28 04:31:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194356526] [2023-01-28 04:31:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194356526] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167530214] [2023-01-28 04:31:40,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:31:40,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:40,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:40,258 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 04:31:40,261 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 04:31:40,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:31:40,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:31:40,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 04:31:40,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:40,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:40,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2023-01-28 04:31:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:40,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:40,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:40,752 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-01-28 04:31:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:41,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167530214] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:31:41,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:31:41,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2023-01-28 04:31:41,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862049009] [2023-01-28 04:31:41,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:31:41,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:31:41,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:31:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-01-28 04:31:41,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-28 04:31:41,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1401 transitions, 24282 flow. Second operand has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states 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 04:31:41,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:41,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-28 04:31:41,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:46,390 INFO L130 PetriNetUnfolder]: 9502/14834 cut-off events. [2023-01-28 04:31:46,390 INFO L131 PetriNetUnfolder]: For 239366/239366 co-relation queries the response was YES. [2023-01-28 04:31:46,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118370 conditions, 14834 events. 9502/14834 cut-off events. For 239366/239366 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 97989 event pairs, 1587 based on Foata normal form. 3/14835 useless extension candidates. Maximal degree in co-relation 117913. Up to 13724 conditions per place. [2023-01-28 04:31:46,523 INFO L137 encePairwiseOnDemand]: 337/353 looper letters, 1074 selfloop transitions, 398 changer transitions 13/1485 dead transitions. [2023-01-28 04:31:46,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1485 transitions, 28475 flow [2023-01-28 04:31:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:31:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:31:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1636 transitions. [2023-01-28 04:31:46,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25747560591753227 [2023-01-28 04:31:46,526 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1636 transitions. [2023-01-28 04:31:46,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1636 transitions. [2023-01-28 04:31:46,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:46,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1636 transitions. [2023-01-28 04:31:46,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.88888888888889) internal successors, (1636), 18 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states 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 04:31:46,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states 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 04:31:46,531 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states 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 04:31:46,531 INFO L175 Difference]: Start difference. First operand has 345 places, 1401 transitions, 24282 flow. Second operand 18 states and 1636 transitions. [2023-01-28 04:31:46,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1485 transitions, 28475 flow [2023-01-28 04:31:48,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1485 transitions, 27518 flow, removed 445 selfloop flow, removed 10 redundant places. [2023-01-28 04:31:48,827 INFO L231 Difference]: Finished difference. Result has 359 places, 1440 transitions, 25164 flow [2023-01-28 04:31:48,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=23457, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25164, PETRI_PLACES=359, PETRI_TRANSITIONS=1440} [2023-01-28 04:31:48,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2023-01-28 04:31:48,829 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1440 transitions, 25164 flow [2023-01-28 04:31:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 86.87096774193549) internal successors, (2693), 31 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states 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 04:31:48,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:48,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:48,834 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 04:31:49,034 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,SelfDestructingSolverStorable12 [2023-01-28 04:31:49,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:31:49,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash -70647383, now seen corresponding path program 11 times [2023-01-28 04:31:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:49,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025457545] [2023-01-28 04:31:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:49,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025457545] [2023-01-28 04:31:49,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025457545] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:49,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426588276] [2023-01-28 04:31:49,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:31:49,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:49,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:49,678 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 04:31:49,680 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 04:31:49,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:31:49,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:31:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 04:31:49,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:31:50,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:50,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2023-01-28 04:31:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:50,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:31:50,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:31:50,140 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 78 [2023-01-28 04:31:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:31:50,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426588276] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:31:50,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:31:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2023-01-28 04:31:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649022465] [2023-01-28 04:31:50,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:31:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 04:31:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:31:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 04:31:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-01-28 04:31:50,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 353 [2023-01-28 04:31:50,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1440 transitions, 25164 flow. Second operand has 28 states, 28 states have (on average 87.10714285714286) internal successors, (2439), 28 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states 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 04:31:50,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:31:50,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 353 [2023-01-28 04:31:50,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:31:56,484 INFO L130 PetriNetUnfolder]: 9706/15166 cut-off events. [2023-01-28 04:31:56,496 INFO L131 PetriNetUnfolder]: For 226667/226667 co-relation queries the response was YES. [2023-01-28 04:31:56,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118405 conditions, 15166 events. 9706/15166 cut-off events. For 226667/226667 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 100694 event pairs, 1485 based on Foata normal form. 3/15169 useless extension candidates. Maximal degree in co-relation 117948. Up to 11569 conditions per place. [2023-01-28 04:31:56,686 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 886 selfloop transitions, 684 changer transitions 9/1579 dead transitions. [2023-01-28 04:31:56,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1579 transitions, 29964 flow [2023-01-28 04:31:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-28 04:31:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-28 04:31:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2743 transitions. [2023-01-28 04:31:56,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2590179414542021 [2023-01-28 04:31:56,689 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2743 transitions. [2023-01-28 04:31:56,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2743 transitions. [2023-01-28 04:31:56,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:31:56,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2743 transitions. [2023-01-28 04:31:56,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 91.43333333333334) internal successors, (2743), 30 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states 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 04:31:56,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states 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 04:31:56,696 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 353.0) internal successors, (10943), 31 states have internal predecessors, (10943), 0 states have call successors, (0), 0 states 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 04:31:56,696 INFO L175 Difference]: Start difference. First operand has 359 places, 1440 transitions, 25164 flow. Second operand 30 states and 2743 transitions. [2023-01-28 04:31:56,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1579 transitions, 29964 flow [2023-01-28 04:31:58,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1579 transitions, 29495 flow, removed 53 selfloop flow, removed 9 redundant places. [2023-01-28 04:31:58,772 INFO L231 Difference]: Finished difference. Result has 384 places, 1475 transitions, 27023 flow [2023-01-28 04:31:58,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=24699, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=27023, PETRI_PLACES=384, PETRI_TRANSITIONS=1475} [2023-01-28 04:31:58,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2023-01-28 04:31:58,774 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1475 transitions, 27023 flow [2023-01-28 04:31:58,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 87.10714285714286) internal successors, (2439), 28 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states 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 04:31:58,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:31:58,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:31:58,779 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 04:31:58,979 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,SelfDestructingSolverStorable13 [2023-01-28 04:31:58,979 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:31:58,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:31:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash 466247267, now seen corresponding path program 12 times [2023-01-28 04:31:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:31:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866607459] [2023-01-28 04:31:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:31:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:31:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:31:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:31:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:31:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866607459] [2023-01-28 04:31:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866607459] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:31:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555357916] [2023-01-28 04:31:59,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:31:59,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:31:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:31:59,917 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 04:31:59,918 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 04:32:00,035 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:32:00,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-28 04:32:00,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:00,295 INFO L321 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2023-01-28 04:32:00,295 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 43 [2023-01-28 04:32:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:00,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:00,483 INFO L321 Elim1Store]: treesize reduction 49, result has 29.0 percent of original size [2023-01-28 04:32:00,483 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 29 [2023-01-28 04:32:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:00,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555357916] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:00,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-01-28 04:32:00,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228406169] [2023-01-28 04:32:00,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:00,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 04:32:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 04:32:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-01-28 04:32:00,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 353 [2023-01-28 04:32:00,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1475 transitions, 27023 flow. Second operand has 26 states, 26 states have (on average 91.3076923076923) internal successors, (2374), 26 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states 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 04:32:00,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:00,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 353 [2023-01-28 04:32:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:06,557 INFO L130 PetriNetUnfolder]: 9654/15192 cut-off events. [2023-01-28 04:32:06,557 INFO L131 PetriNetUnfolder]: For 246755/247378 co-relation queries the response was YES. [2023-01-28 04:32:06,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123027 conditions, 15192 events. 9654/15192 cut-off events. For 246755/247378 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 103750 event pairs, 1150 based on Foata normal form. 256/15343 useless extension candidates. Maximal degree in co-relation 122546. Up to 8903 conditions per place. [2023-01-28 04:32:06,709 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 836 selfloop transitions, 832 changer transitions 11/1727 dead transitions. [2023-01-28 04:32:06,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1727 transitions, 34217 flow [2023-01-28 04:32:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-28 04:32:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-28 04:32:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2201 transitions. [2023-01-28 04:32:06,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2710924990762409 [2023-01-28 04:32:06,711 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2201 transitions. [2023-01-28 04:32:06,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2201 transitions. [2023-01-28 04:32:06,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:06,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2201 transitions. [2023-01-28 04:32:06,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.69565217391305) internal successors, (2201), 23 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states 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 04:32:06,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states 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 04:32:06,717 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 353.0) internal successors, (8472), 24 states have internal predecessors, (8472), 0 states have call successors, (0), 0 states 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 04:32:06,717 INFO L175 Difference]: Start difference. First operand has 384 places, 1475 transitions, 27023 flow. Second operand 23 states and 2201 transitions. [2023-01-28 04:32:06,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1727 transitions, 34217 flow [2023-01-28 04:32:08,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1727 transitions, 33332 flow, removed 130 selfloop flow, removed 18 redundant places. [2023-01-28 04:32:08,955 INFO L231 Difference]: Finished difference. Result has 394 places, 1617 transitions, 31101 flow [2023-01-28 04:32:08,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26236, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=31101, PETRI_PLACES=394, PETRI_TRANSITIONS=1617} [2023-01-28 04:32:08,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2023-01-28 04:32:08,957 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1617 transitions, 31101 flow [2023-01-28 04:32:08,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 91.3076923076923) internal successors, (2374), 26 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states 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 04:32:08,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:08,957 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:08,962 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 04:32:09,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 04:32:09,162 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:32:09,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash -7374613, now seen corresponding path program 13 times [2023-01-28 04:32:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518115794] [2023-01-28 04:32:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:09,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518115794] [2023-01-28 04:32:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518115794] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840763352] [2023-01-28 04:32:09,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:32:09,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:09,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:09,249 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 04:32:09,268 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 04:32:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:09,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:32:09,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:09,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:09,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840763352] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:09,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:09,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 04:32:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008563051] [2023-01-28 04:32:09,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:09,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:32:09,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:32:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:32:09,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 353 [2023-01-28 04:32:09,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1617 transitions, 31101 flow. Second operand has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states 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 04:32:09,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:09,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 353 [2023-01-28 04:32:09,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:16,359 INFO L130 PetriNetUnfolder]: 11190/18524 cut-off events. [2023-01-28 04:32:16,359 INFO L131 PetriNetUnfolder]: For 386085/389081 co-relation queries the response was YES. [2023-01-28 04:32:16,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156674 conditions, 18524 events. 11190/18524 cut-off events. For 386085/389081 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 142503 event pairs, 2052 based on Foata normal form. 2194/20154 useless extension candidates. Maximal degree in co-relation 156536. Up to 6496 conditions per place. [2023-01-28 04:32:16,589 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1674 selfloop transitions, 202 changer transitions 21/1996 dead transitions. [2023-01-28 04:32:16,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1996 transitions, 42013 flow [2023-01-28 04:32:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:32:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:32:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1620 transitions. [2023-01-28 04:32:16,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38243626062322944 [2023-01-28 04:32:16,591 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1620 transitions. [2023-01-28 04:32:16,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1620 transitions. [2023-01-28 04:32:16,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:16,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1620 transitions. [2023-01-28 04:32:16,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.0) internal successors, (1620), 12 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 04:32:16,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states 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 04:32:16,595 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states 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 04:32:16,595 INFO L175 Difference]: Start difference. First operand has 394 places, 1617 transitions, 31101 flow. Second operand 12 states and 1620 transitions. [2023-01-28 04:32:16,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1996 transitions, 42013 flow [2023-01-28 04:32:20,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 1996 transitions, 40945 flow, removed 233 selfloop flow, removed 18 redundant places. [2023-01-28 04:32:20,543 INFO L231 Difference]: Finished difference. Result has 385 places, 1344 transitions, 26255 flow [2023-01-28 04:32:20,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25198, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26255, PETRI_PLACES=385, PETRI_TRANSITIONS=1344} [2023-01-28 04:32:20,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2023-01-28 04:32:20,544 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1344 transitions, 26255 flow [2023-01-28 04:32:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.5) internal successors, (1785), 14 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states 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 04:32:20,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:20,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:20,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 04:32:20,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:20,750 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:32:20,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -556909332, now seen corresponding path program 14 times [2023-01-28 04:32:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630729507] [2023-01-28 04:32:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:20,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:20,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630729507] [2023-01-28 04:32:20,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630729507] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:20,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492710270] [2023-01-28 04:32:20,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:32:20,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:20,913 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:20,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 04:32:21,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:32:21,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:21,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 04:32:21,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:21,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492710270] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:21,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-01-28 04:32:21,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734161761] [2023-01-28 04:32:21,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:32:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:32:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:32:21,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-01-28 04:32:21,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1344 transitions, 26255 flow. Second operand has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 04:32:21,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:21,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-01-28 04:32:21,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:27,492 INFO L130 PetriNetUnfolder]: 11048/18623 cut-off events. [2023-01-28 04:32:27,493 INFO L131 PetriNetUnfolder]: For 339007/340643 co-relation queries the response was YES. [2023-01-28 04:32:27,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149658 conditions, 18623 events. 11048/18623 cut-off events. For 339007/340643 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 147997 event pairs, 1831 based on Foata normal form. 1287/19715 useless extension candidates. Maximal degree in co-relation 149529. Up to 5357 conditions per place. [2023-01-28 04:32:27,758 INFO L137 encePairwiseOnDemand]: 345/353 looper letters, 1351 selfloop transitions, 278 changer transitions 255/1970 dead transitions. [2023-01-28 04:32:27,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1970 transitions, 40594 flow [2023-01-28 04:32:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 04:32:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 04:32:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1814 transitions. [2023-01-28 04:32:27,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3670578713071631 [2023-01-28 04:32:27,761 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1814 transitions. [2023-01-28 04:32:27,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1814 transitions. [2023-01-28 04:32:27,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:27,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1814 transitions. [2023-01-28 04:32:27,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 129.57142857142858) internal successors, (1814), 14 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states 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 04:32:27,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states 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 04:32:27,772 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 353.0) internal successors, (5295), 15 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states 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 04:32:27,772 INFO L175 Difference]: Start difference. First operand has 385 places, 1344 transitions, 26255 flow. Second operand 14 states and 1814 transitions. [2023-01-28 04:32:27,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1970 transitions, 40594 flow [2023-01-28 04:32:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1970 transitions, 40474 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-01-28 04:32:31,413 INFO L231 Difference]: Finished difference. Result has 395 places, 1254 transitions, 24755 flow [2023-01-28 04:32:31,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25321, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24755, PETRI_PLACES=395, PETRI_TRANSITIONS=1254} [2023-01-28 04:32:31,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-01-28 04:32:31,414 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 1254 transitions, 24755 flow [2023-01-28 04:32:31,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 04:32:31,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:31,415 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:31,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 04:32:31,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 04:32:31,619 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:32:31,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1941623595, now seen corresponding path program 15 times [2023-01-28 04:32:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643123156] [2023-01-28 04:32:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:31,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643123156] [2023-01-28 04:32:31,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643123156] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:31,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856898697] [2023-01-28 04:32:31,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:32:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:31,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:31,719 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:31,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 04:32:31,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:32:31,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:31,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:32:31,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:31,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856898697] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:31,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:31,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 04:32:31,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070497122] [2023-01-28 04:32:31,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:31,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:32:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:32:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:32:31,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 353 [2023-01-28 04:32:31,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1254 transitions, 24755 flow. Second operand has 14 states, 14 states have (on average 130.42857142857142) internal successors, (1826), 14 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states 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 04:32:31,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:31,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 353 [2023-01-28 04:32:31,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:36,080 INFO L130 PetriNetUnfolder]: 7557/12853 cut-off events. [2023-01-28 04:32:36,081 INFO L131 PetriNetUnfolder]: For 265305/267628 co-relation queries the response was YES. [2023-01-28 04:32:36,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106012 conditions, 12853 events. 7557/12853 cut-off events. For 265305/267628 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 98923 event pairs, 2673 based on Foata normal form. 865/13011 useless extension candidates. Maximal degree in co-relation 105881. Up to 8468 conditions per place. [2023-01-28 04:32:36,201 INFO L137 encePairwiseOnDemand]: 348/353 looper letters, 1176 selfloop transitions, 11 changer transitions 11/1327 dead transitions. [2023-01-28 04:32:36,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1327 transitions, 27017 flow [2023-01-28 04:32:36,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:32:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:32:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2023-01-28 04:32:36,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828409550789154 [2023-01-28 04:32:36,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2023-01-28 04:32:36,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2023-01-28 04:32:36,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:36,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2023-01-28 04:32:36,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states 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 04:32:36,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states 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 04:32:36,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 0 states have call successors, (0), 0 states 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 04:32:36,205 INFO L175 Difference]: Start difference. First operand has 395 places, 1254 transitions, 24755 flow. Second operand 7 states and 946 transitions. [2023-01-28 04:32:36,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1327 transitions, 27017 flow [2023-01-28 04:32:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1327 transitions, 26184 flow, removed 200 selfloop flow, removed 21 redundant places. [2023-01-28 04:32:37,671 INFO L231 Difference]: Finished difference. Result has 371 places, 1073 transitions, 19541 flow [2023-01-28 04:32:37,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19654, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19541, PETRI_PLACES=371, PETRI_TRANSITIONS=1073} [2023-01-28 04:32:37,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2023-01-28 04:32:37,672 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 1073 transitions, 19541 flow [2023-01-28 04:32:37,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 130.42857142857142) internal successors, (1826), 14 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states 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 04:32:37,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:37,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:37,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-01-28 04:32:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 04:32:37,877 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:32:37,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1231118575, now seen corresponding path program 1 times [2023-01-28 04:32:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875746856] [2023-01-28 04:32:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:37,955 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 04:32:37,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875746856] [2023-01-28 04:32:37,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875746856] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025861658] [2023-01-28 04:32:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:37,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:37,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:37,969 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 04:32:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:38,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:32:38,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:38,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025861658] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:38,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-01-28 04:32:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723242073] [2023-01-28 04:32:38,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:32:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:32:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:32:38,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:32:38,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 1073 transitions, 19541 flow. Second operand has 17 states, 17 states have (on average 120.6470588235294) internal successors, (2051), 17 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states 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 04:32:38,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:38,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:32:38,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:44,805 INFO L130 PetriNetUnfolder]: 11072/18974 cut-off events. [2023-01-28 04:32:44,805 INFO L131 PetriNetUnfolder]: For 316575/316681 co-relation queries the response was YES. [2023-01-28 04:32:45,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145429 conditions, 18974 events. 11072/18974 cut-off events. For 316575/316681 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 153344 event pairs, 846 based on Foata normal form. 180/19132 useless extension candidates. Maximal degree in co-relation 145303. Up to 5337 conditions per place. [2023-01-28 04:32:45,093 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1550 selfloop transitions, 455 changer transitions 146/2185 dead transitions. [2023-01-28 04:32:45,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 2185 transitions, 41509 flow [2023-01-28 04:32:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 04:32:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 04:32:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3687 transitions. [2023-01-28 04:32:45,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601641105792713 [2023-01-28 04:32:45,096 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3687 transitions. [2023-01-28 04:32:45,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3687 transitions. [2023-01-28 04:32:45,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:45,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3687 transitions. [2023-01-28 04:32:45,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 127.13793103448276) internal successors, (3687), 29 states have internal predecessors, (3687), 0 states have call successors, (0), 0 states 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 04:32:45,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 0 states have call successors, (0), 0 states 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 04:32:45,118 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 353.0) internal successors, (10590), 30 states have internal predecessors, (10590), 0 states have call successors, (0), 0 states 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 04:32:45,118 INFO L175 Difference]: Start difference. First operand has 371 places, 1073 transitions, 19541 flow. Second operand 29 states and 3687 transitions. [2023-01-28 04:32:45,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 2185 transitions, 41509 flow [2023-01-28 04:32:47,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 2185 transitions, 41137 flow, removed 32 selfloop flow, removed 16 redundant places. [2023-01-28 04:32:47,500 INFO L231 Difference]: Finished difference. Result has 396 places, 1387 transitions, 26430 flow [2023-01-28 04:32:47,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19173, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=26430, PETRI_PLACES=396, PETRI_TRANSITIONS=1387} [2023-01-28 04:32:47,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2023-01-28 04:32:47,501 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1387 transitions, 26430 flow [2023-01-28 04:32:47,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 120.6470588235294) internal successors, (2051), 17 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states 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 04:32:47,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:47,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:47,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 04:32:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:47,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:32:47,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash -16239823, now seen corresponding path program 2 times [2023-01-28 04:32:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:47,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432647006] [2023-01-28 04:32:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:47,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:47,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432647006] [2023-01-28 04:32:47,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432647006] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:47,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261555167] [2023-01-28 04:32:47,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:32:47,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:47,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:47,798 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:47,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 04:32:47,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:32:47,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:47,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:32:47,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:47,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:32:48,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261555167] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:48,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:48,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 04:32:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131772596] [2023-01-28 04:32:48,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:48,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 04:32:48,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 04:32:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:32:48,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:32:48,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1387 transitions, 26430 flow. Second operand has 16 states, 16 states have (on average 120.75) internal successors, (1932), 16 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states 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 04:32:48,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:48,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:32:48,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:32:54,989 INFO L130 PetriNetUnfolder]: 10331/18073 cut-off events. [2023-01-28 04:32:54,989 INFO L131 PetriNetUnfolder]: For 379266/379368 co-relation queries the response was YES. [2023-01-28 04:32:55,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151051 conditions, 18073 events. 10331/18073 cut-off events. For 379266/379368 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 148255 event pairs, 1833 based on Foata normal form. 416/18450 useless extension candidates. Maximal degree in co-relation 150916. Up to 5761 conditions per place. [2023-01-28 04:32:55,191 INFO L137 encePairwiseOnDemand]: 344/353 looper letters, 1111 selfloop transitions, 503 changer transitions 184/1832 dead transitions. [2023-01-28 04:32:55,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1832 transitions, 36910 flow [2023-01-28 04:32:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 04:32:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 04:32:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2561 transitions. [2023-01-28 04:32:55,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36274787535410763 [2023-01-28 04:32:55,193 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2561 transitions. [2023-01-28 04:32:55,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2561 transitions. [2023-01-28 04:32:55,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:32:55,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2561 transitions. [2023-01-28 04:32:55,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 128.05) internal successors, (2561), 20 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states 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 04:32:55,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states 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 04:32:55,217 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states 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 04:32:55,217 INFO L175 Difference]: Start difference. First operand has 396 places, 1387 transitions, 26430 flow. Second operand 20 states and 2561 transitions. [2023-01-28 04:32:55,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1832 transitions, 36910 flow [2023-01-28 04:32:58,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1832 transitions, 36291 flow, removed 214 selfloop flow, removed 7 redundant places. [2023-01-28 04:32:58,739 INFO L231 Difference]: Finished difference. Result has 412 places, 1393 transitions, 27440 flow [2023-01-28 04:32:58,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=25405, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=27440, PETRI_PLACES=412, PETRI_TRANSITIONS=1393} [2023-01-28 04:32:58,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2023-01-28 04:32:58,740 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1393 transitions, 27440 flow [2023-01-28 04:32:58,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 120.75) internal successors, (1932), 16 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states 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 04:32:58,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:32:58,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:32:58,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 04:32:58,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:58,945 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:32:58,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:32:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -57058493, now seen corresponding path program 3 times [2023-01-28 04:32:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:32:58,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118950064] [2023-01-28 04:32:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:32:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:32:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:32:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:32:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118950064] [2023-01-28 04:32:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118950064] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:32:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990845504] [2023-01-28 04:32:59,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:32:59,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:32:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:32:59,044 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:32:59,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 04:32:59,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 04:32:59,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:32:59,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:32:59,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:32:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:59,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:32:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:32:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990845504] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:32:59,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:32:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 04:32:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760505435] [2023-01-28 04:32:59,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:32:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:32:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:32:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:32:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:32:59,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:32:59,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1393 transitions, 27440 flow. Second operand has 18 states, 18 states have (on average 120.5) internal successors, (2169), 18 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states 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 04:32:59,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:32:59,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:32:59,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:05,736 INFO L130 PetriNetUnfolder]: 9498/16524 cut-off events. [2023-01-28 04:33:05,736 INFO L131 PetriNetUnfolder]: For 351504/351656 co-relation queries the response was YES. [2023-01-28 04:33:05,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140288 conditions, 16524 events. 9498/16524 cut-off events. For 351504/351656 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 133518 event pairs, 627 based on Foata normal form. 381/16888 useless extension candidates. Maximal degree in co-relation 140150. Up to 4395 conditions per place. [2023-01-28 04:33:05,898 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 1407 selfloop transitions, 316 changer transitions 358/2115 dead transitions. [2023-01-28 04:33:05,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 2115 transitions, 43551 flow [2023-01-28 04:33:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 04:33:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 04:33:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4034 transitions. [2023-01-28 04:33:05,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35711756373937675 [2023-01-28 04:33:05,901 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4034 transitions. [2023-01-28 04:33:05,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4034 transitions. [2023-01-28 04:33:05,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:05,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4034 transitions. [2023-01-28 04:33:05,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 126.0625) internal successors, (4034), 32 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states 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 04:33:05,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states 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 04:33:05,909 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 353.0) internal successors, (11649), 33 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states 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 04:33:05,909 INFO L175 Difference]: Start difference. First operand has 412 places, 1393 transitions, 27440 flow. Second operand 32 states and 4034 transitions. [2023-01-28 04:33:05,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 2115 transitions, 43551 flow [2023-01-28 04:33:08,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 2115 transitions, 42969 flow, removed 215 selfloop flow, removed 9 redundant places. [2023-01-28 04:33:08,548 INFO L231 Difference]: Finished difference. Result has 430 places, 1334 transitions, 26350 flow [2023-01-28 04:33:08,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=26581, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=26350, PETRI_PLACES=430, PETRI_TRANSITIONS=1334} [2023-01-28 04:33:08,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2023-01-28 04:33:08,549 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1334 transitions, 26350 flow [2023-01-28 04:33:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.5) internal successors, (2169), 18 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states 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 04:33:08,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:08,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:08,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:08,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:08,755 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:08,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -720137693, now seen corresponding path program 4 times [2023-01-28 04:33:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682210456] [2023-01-28 04:33:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:33:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682210456] [2023-01-28 04:33:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682210456] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748695296] [2023-01-28 04:33:08,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:33:08,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:08,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:08,845 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:08,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 04:33:08,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:33:08,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:08,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:33:08,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:33:09,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:33:09,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748695296] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:09,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:09,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 04:33:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633085151] [2023-01-28 04:33:09,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:09,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:33:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:33:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:33:09,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:09,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1334 transitions, 26350 flow. Second operand has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states 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 04:33:09,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:09,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:09,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:14,185 INFO L130 PetriNetUnfolder]: 7655/13389 cut-off events. [2023-01-28 04:33:14,185 INFO L131 PetriNetUnfolder]: For 267220/267376 co-relation queries the response was YES. [2023-01-28 04:33:14,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114259 conditions, 13389 events. 7655/13389 cut-off events. For 267220/267376 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 105318 event pairs, 754 based on Foata normal form. 425/13797 useless extension candidates. Maximal degree in co-relation 114122. Up to 4139 conditions per place. [2023-01-28 04:33:14,328 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 1191 selfloop transitions, 419 changer transitions 198/1842 dead transitions. [2023-01-28 04:33:14,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1842 transitions, 37530 flow [2023-01-28 04:33:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-28 04:33:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-28 04:33:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3923 transitions. [2023-01-28 04:33:14,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3584940144384538 [2023-01-28 04:33:14,331 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3923 transitions. [2023-01-28 04:33:14,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3923 transitions. [2023-01-28 04:33:14,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:14,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3923 transitions. [2023-01-28 04:33:14,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 126.54838709677419) internal successors, (3923), 31 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states 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 04:33:14,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states 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 04:33:14,339 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 353.0) internal successors, (11296), 32 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states 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 04:33:14,339 INFO L175 Difference]: Start difference. First operand has 430 places, 1334 transitions, 26350 flow. Second operand 31 states and 3923 transitions. [2023-01-28 04:33:14,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1842 transitions, 37530 flow [2023-01-28 04:33:16,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1842 transitions, 35732 flow, removed 341 selfloop flow, removed 31 redundant places. [2023-01-28 04:33:16,605 INFO L231 Difference]: Finished difference. Result has 433 places, 1227 transitions, 23945 flow [2023-01-28 04:33:16,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=22655, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=23945, PETRI_PLACES=433, PETRI_TRANSITIONS=1227} [2023-01-28 04:33:16,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2023-01-28 04:33:16,607 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1227 transitions, 23945 flow [2023-01-28 04:33:16,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.61111111111111) internal successors, (2171), 18 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states 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 04:33:16,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:16,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:16,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:16,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 04:33:16,808 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:16,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1459680607, now seen corresponding path program 5 times [2023-01-28 04:33:16,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:16,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941577685] [2023-01-28 04:33:16,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:16,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:16,883 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 04:33:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941577685] [2023-01-28 04:33:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941577685] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152254319] [2023-01-28 04:33:16,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:33:16,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:16,885 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:16,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 04:33:16,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:33:16,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:16,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:33:16,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:33:17,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:33:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152254319] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:17,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 04:33:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511419673] [2023-01-28 04:33:17,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:17,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 04:33:17,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 04:33:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:33:17,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:17,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1227 transitions, 23945 flow. Second operand has 16 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states 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 04:33:17,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:17,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:17,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:20,685 INFO L130 PetriNetUnfolder]: 5253/9441 cut-off events. [2023-01-28 04:33:20,686 INFO L131 PetriNetUnfolder]: For 189872/190014 co-relation queries the response was YES. [2023-01-28 04:33:20,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75915 conditions, 9441 events. 5253/9441 cut-off events. For 189872/190014 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 71833 event pairs, 449 based on Foata normal form. 737/10157 useless extension candidates. Maximal degree in co-relation 75777. Up to 3529 conditions per place. [2023-01-28 04:33:20,826 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 728 selfloop transitions, 50 changer transitions 388/1184 dead transitions. [2023-01-28 04:33:20,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1184 transitions, 22834 flow [2023-01-28 04:33:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:33:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:33:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2254 transitions. [2023-01-28 04:33:20,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3547371734340573 [2023-01-28 04:33:20,832 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2254 transitions. [2023-01-28 04:33:20,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2254 transitions. [2023-01-28 04:33:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:20,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2254 transitions. [2023-01-28 04:33:20,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.22222222222223) internal successors, (2254), 18 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states 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 04:33:20,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states 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 04:33:20,839 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 353.0) internal successors, (6707), 19 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states 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 04:33:20,839 INFO L175 Difference]: Start difference. First operand has 433 places, 1227 transitions, 23945 flow. Second operand 18 states and 2254 transitions. [2023-01-28 04:33:20,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1184 transitions, 22834 flow [2023-01-28 04:33:22,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1184 transitions, 22349 flow, removed 50 selfloop flow, removed 24 redundant places. [2023-01-28 04:33:22,045 INFO L231 Difference]: Finished difference. Result has 395 places, 674 transitions, 11876 flow [2023-01-28 04:33:22,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16613, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11876, PETRI_PLACES=395, PETRI_TRANSITIONS=674} [2023-01-28 04:33:22,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2023-01-28 04:33:22,046 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 674 transitions, 11876 flow [2023-01-28 04:33:22,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 120.6875) internal successors, (1931), 16 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states 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 04:33:22,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:22,047 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:22,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 04:33:22,251 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:22,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 989218226, now seen corresponding path program 16 times [2023-01-28 04:33:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144200859] [2023-01-28 04:33:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:33:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144200859] [2023-01-28 04:33:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144200859] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486852028] [2023-01-28 04:33:22,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:33:22,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:22,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:22,327 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:22,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 04:33:22,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:33:22,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:22,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:22,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:33:22,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:22,610 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 04:33:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486852028] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:22,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:22,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-01-28 04:33:22,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690027344] [2023-01-28 04:33:22,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:22,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:33:22,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:22,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:33:22,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:33:22,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 353 [2023-01-28 04:33:22,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 674 transitions, 11876 flow. Second operand has 19 states, 19 states have (on average 117.94736842105263) internal successors, (2241), 19 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states 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 04:33:22,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:22,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 353 [2023-01-28 04:33:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:24,740 INFO L130 PetriNetUnfolder]: 3313/5243 cut-off events. [2023-01-28 04:33:24,740 INFO L131 PetriNetUnfolder]: For 118541/118541 co-relation queries the response was YES. [2023-01-28 04:33:24,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46932 conditions, 5243 events. 3313/5243 cut-off events. For 118541/118541 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29570 event pairs, 320 based on Foata normal form. 385/5625 useless extension candidates. Maximal degree in co-relation 46805. Up to 2053 conditions per place. [2023-01-28 04:33:24,805 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 431 selfloop transitions, 539 changer transitions 0/970 dead transitions. [2023-01-28 04:33:24,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 970 transitions, 18377 flow [2023-01-28 04:33:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-01-28 04:33:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-01-28 04:33:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4622 transitions. [2023-01-28 04:33:24,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3445653794543015 [2023-01-28 04:33:24,809 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4622 transitions. [2023-01-28 04:33:24,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4622 transitions. [2023-01-28 04:33:24,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:24,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4622 transitions. [2023-01-28 04:33:24,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 121.63157894736842) internal successors, (4622), 38 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states 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 04:33:24,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 0 states have call successors, (0), 0 states 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 04:33:24,818 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 353.0) internal successors, (13767), 39 states have internal predecessors, (13767), 0 states have call successors, (0), 0 states 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 04:33:24,818 INFO L175 Difference]: Start difference. First operand has 395 places, 674 transitions, 11876 flow. Second operand 38 states and 4622 transitions. [2023-01-28 04:33:24,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 970 transitions, 18377 flow [2023-01-28 04:33:25,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 970 transitions, 16390 flow, removed 619 selfloop flow, removed 28 redundant places. [2023-01-28 04:33:25,447 INFO L231 Difference]: Finished difference. Result has 318 places, 779 transitions, 14356 flow [2023-01-28 04:33:25,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=7733, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14356, PETRI_PLACES=318, PETRI_TRANSITIONS=779} [2023-01-28 04:33:25,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2023-01-28 04:33:25,448 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 779 transitions, 14356 flow [2023-01-28 04:33:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 117.94736842105263) internal successors, (2241), 19 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states 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 04:33:25,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:25,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:25,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:25,656 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:25,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2072912546, now seen corresponding path program 17 times [2023-01-28 04:33:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257887121] [2023-01-28 04:33:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:25,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257887121] [2023-01-28 04:33:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257887121] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:25,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426400027] [2023-01-28 04:33:25,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:33:25,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:25,831 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:25,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 04:33:25,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:33:25,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:25,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:25,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:26,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:26,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426400027] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:26,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:26,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 04:33:26,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146674323] [2023-01-28 04:33:26,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:26,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:33:26,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:33:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:33:26,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:26,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 779 transitions, 14356 flow. Second operand has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states 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 04:33:26,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:26,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:26,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:28,550 INFO L130 PetriNetUnfolder]: 4158/6657 cut-off events. [2023-01-28 04:33:28,550 INFO L131 PetriNetUnfolder]: For 182123/182208 co-relation queries the response was YES. [2023-01-28 04:33:28,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63313 conditions, 6657 events. 4158/6657 cut-off events. For 182123/182208 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 40055 event pairs, 503 based on Foata normal form. 53/6705 useless extension candidates. Maximal degree in co-relation 63181. Up to 2861 conditions per place. [2023-01-28 04:33:28,632 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 684 selfloop transitions, 355 changer transitions 0/1077 dead transitions. [2023-01-28 04:33:28,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1077 transitions, 21954 flow [2023-01-28 04:33:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 04:33:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 04:33:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1888 transitions. [2023-01-28 04:33:28,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3565627950897073 [2023-01-28 04:33:28,650 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1888 transitions. [2023-01-28 04:33:28,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1888 transitions. [2023-01-28 04:33:28,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:28,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1888 transitions. [2023-01-28 04:33:28,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.86666666666666) internal successors, (1888), 15 states have internal predecessors, (1888), 0 states have call successors, (0), 0 states 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 04:33:28,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states 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 04:33:28,658 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 353.0) internal successors, (5648), 16 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states 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 04:33:28,658 INFO L175 Difference]: Start difference. First operand has 318 places, 779 transitions, 14356 flow. Second operand 15 states and 1888 transitions. [2023-01-28 04:33:28,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1077 transitions, 21954 flow [2023-01-28 04:33:29,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1077 transitions, 20028 flow, removed 656 selfloop flow, removed 11 redundant places. [2023-01-28 04:33:29,841 INFO L231 Difference]: Finished difference. Result has 328 places, 913 transitions, 16650 flow [2023-01-28 04:33:29,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=12772, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16650, PETRI_PLACES=328, PETRI_TRANSITIONS=913} [2023-01-28 04:33:29,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2023-01-28 04:33:29,842 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 913 transitions, 16650 flow [2023-01-28 04:33:29,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states 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 04:33:29,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:29,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:29,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:30,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:30,046 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:30,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1999441316, now seen corresponding path program 18 times [2023-01-28 04:33:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151537450] [2023-01-28 04:33:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:30,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151537450] [2023-01-28 04:33:30,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151537450] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:30,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600750004] [2023-01-28 04:33:30,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:33:30,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:30,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:30,148 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 04:33:30,328 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:33:30,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:30,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:30,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:30,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600750004] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:30,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 04:33:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648425567] [2023-01-28 04:33:30,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:30,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:33:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:33:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:33:30,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:30,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 913 transitions, 16650 flow. Second operand has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states 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 04:33:30,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:30,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:33,375 INFO L130 PetriNetUnfolder]: 5220/8343 cut-off events. [2023-01-28 04:33:33,376 INFO L131 PetriNetUnfolder]: For 223952/224067 co-relation queries the response was YES. [2023-01-28 04:33:33,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81851 conditions, 8343 events. 5220/8343 cut-off events. For 223952/224067 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 51860 event pairs, 514 based on Foata normal form. 75/8400 useless extension candidates. Maximal degree in co-relation 81717. Up to 2937 conditions per place. [2023-01-28 04:33:33,460 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 653 selfloop transitions, 503 changer transitions 0/1194 dead transitions. [2023-01-28 04:33:33,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1194 transitions, 24337 flow [2023-01-28 04:33:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:33:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:33:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2401 transitions. [2023-01-28 04:33:33,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35798419561652006 [2023-01-28 04:33:33,462 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2401 transitions. [2023-01-28 04:33:33,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2401 transitions. [2023-01-28 04:33:33,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:33,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2401 transitions. [2023-01-28 04:33:33,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 126.36842105263158) internal successors, (2401), 19 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states 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 04:33:33,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states 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 04:33:33,471 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 353.0) internal successors, (7060), 20 states have internal predecessors, (7060), 0 states have call successors, (0), 0 states 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 04:33:33,472 INFO L175 Difference]: Start difference. First operand has 328 places, 913 transitions, 16650 flow. Second operand 19 states and 2401 transitions. [2023-01-28 04:33:33,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1194 transitions, 24337 flow [2023-01-28 04:33:34,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1194 transitions, 23973 flow, removed 164 selfloop flow, removed 6 redundant places. [2023-01-28 04:33:34,828 INFO L231 Difference]: Finished difference. Result has 346 places, 992 transitions, 19914 flow [2023-01-28 04:33:34,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=16280, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19914, PETRI_PLACES=346, PETRI_TRANSITIONS=992} [2023-01-28 04:33:34,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2023-01-28 04:33:34,829 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 992 transitions, 19914 flow [2023-01-28 04:33:34,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 120.2) internal successors, (2404), 20 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states 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 04:33:34,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:34,830 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:34,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-01-28 04:33:35,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 04:33:35,034 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:35,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2058981304, now seen corresponding path program 19 times [2023-01-28 04:33:35,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:35,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407802981] [2023-01-28 04:33:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:35,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:35,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407802981] [2023-01-28 04:33:35,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407802981] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:35,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488259311] [2023-01-28 04:33:35,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:33:35,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:35,138 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:35,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 04:33:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:35,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:35,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:35,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:35,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488259311] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:35,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:35,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-01-28 04:33:35,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650908862] [2023-01-28 04:33:35,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:35,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:33:35,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:35,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:33:35,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:33:35,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:35,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 992 transitions, 19914 flow. Second operand has 18 states, 18 states have (on average 120.44444444444444) internal successors, (2168), 18 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states 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 04:33:35,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:35,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:35,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:37,971 INFO L130 PetriNetUnfolder]: 5148/8230 cut-off events. [2023-01-28 04:33:37,971 INFO L131 PetriNetUnfolder]: For 247984/248087 co-relation queries the response was YES. [2023-01-28 04:33:38,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84492 conditions, 8230 events. 5148/8230 cut-off events. For 247984/248087 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 50848 event pairs, 841 based on Foata normal form. 87/8307 useless extension candidates. Maximal degree in co-relation 84354. Up to 4387 conditions per place. [2023-01-28 04:33:38,061 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 802 selfloop transitions, 267 changer transitions 0/1106 dead transitions. [2023-01-28 04:33:38,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1106 transitions, 24119 flow [2023-01-28 04:33:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:33:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:33:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2023-01-28 04:33:38,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35439093484419265 [2023-01-28 04:33:38,062 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2023-01-28 04:33:38,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2023-01-28 04:33:38,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:38,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2023-01-28 04:33:38,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states 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 04:33:38,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 04:33:38,065 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 04:33:38,065 INFO L175 Difference]: Start difference. First operand has 346 places, 992 transitions, 19914 flow. Second operand 10 states and 1251 transitions. [2023-01-28 04:33:38,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1106 transitions, 24119 flow [2023-01-28 04:33:39,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1106 transitions, 22799 flow, removed 271 selfloop flow, removed 20 redundant places. [2023-01-28 04:33:39,377 INFO L231 Difference]: Finished difference. Result has 329 places, 983 transitions, 19476 flow [2023-01-28 04:33:39,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18024, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19476, PETRI_PLACES=329, PETRI_TRANSITIONS=983} [2023-01-28 04:33:39,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2023-01-28 04:33:39,378 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 983 transitions, 19476 flow [2023-01-28 04:33:39,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 120.44444444444444) internal successors, (2168), 18 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states 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 04:33:39,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:39,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:39,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-01-28 04:33:39,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 04:33:39,582 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:39,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:39,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1537945544, now seen corresponding path program 20 times [2023-01-28 04:33:39,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:39,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376302383] [2023-01-28 04:33:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:39,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:39,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376302383] [2023-01-28 04:33:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376302383] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47242814] [2023-01-28 04:33:39,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:33:39,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:39,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:39,687 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:39,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 04:33:39,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:33:39,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:39,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:39,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:39,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:40,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47242814] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:40,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:40,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 04:33:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857882457] [2023-01-28 04:33:40,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:40,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:33:40,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:33:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:33:40,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:40,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 983 transitions, 19476 flow. Second operand has 21 states, 21 states have (on average 119.95238095238095) internal successors, (2519), 21 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states 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 04:33:40,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:40,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:42,726 INFO L130 PetriNetUnfolder]: 5100/8131 cut-off events. [2023-01-28 04:33:42,726 INFO L131 PetriNetUnfolder]: For 240212/240299 co-relation queries the response was YES. [2023-01-28 04:33:42,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82978 conditions, 8131 events. 5100/8131 cut-off events. For 240212/240299 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49891 event pairs, 839 based on Foata normal form. 69/8194 useless extension candidates. Maximal degree in co-relation 82842. Up to 4221 conditions per place. [2023-01-28 04:33:42,832 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 681 selfloop transitions, 365 changer transitions 0/1083 dead transitions. [2023-01-28 04:33:42,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1083 transitions, 23229 flow [2023-01-28 04:33:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:33:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:33:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1384 transitions. [2023-01-28 04:33:42,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35642544424414113 [2023-01-28 04:33:42,834 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1384 transitions. [2023-01-28 04:33:42,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1384 transitions. [2023-01-28 04:33:42,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:42,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1384 transitions. [2023-01-28 04:33:42,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 125.81818181818181) internal successors, (1384), 11 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 04:33:42,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states 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 04:33:42,836 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states 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 04:33:42,836 INFO L175 Difference]: Start difference. First operand has 329 places, 983 transitions, 19476 flow. Second operand 11 states and 1384 transitions. [2023-01-28 04:33:42,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1083 transitions, 23229 flow [2023-01-28 04:33:43,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1083 transitions, 22878 flow, removed 93 selfloop flow, removed 5 redundant places. [2023-01-28 04:33:44,012 INFO L231 Difference]: Finished difference. Result has 333 places, 982 transitions, 19839 flow [2023-01-28 04:33:44,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19109, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19839, PETRI_PLACES=333, PETRI_TRANSITIONS=982} [2023-01-28 04:33:44,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2023-01-28 04:33:44,016 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 982 transitions, 19839 flow [2023-01-28 04:33:44,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 119.95238095238095) internal successors, (2519), 21 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states 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 04:33:44,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:44,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:44,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:44,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 04:33:44,222 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:44,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1116558660, now seen corresponding path program 21 times [2023-01-28 04:33:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581640795] [2023-01-28 04:33:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581640795] [2023-01-28 04:33:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581640795] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519787078] [2023-01-28 04:33:44,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:33:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:44,326 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:44,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-01-28 04:33:44,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:33:44,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:44,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:44,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:44,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:44,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519787078] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:44,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:44,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 04:33:44,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294051952] [2023-01-28 04:33:44,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:44,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:33:44,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:44,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:33:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:33:44,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:44,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 982 transitions, 19839 flow. Second operand has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states 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 04:33:44,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:44,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:44,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:47,226 INFO L130 PetriNetUnfolder]: 5019/7953 cut-off events. [2023-01-28 04:33:47,226 INFO L131 PetriNetUnfolder]: For 244884/244971 co-relation queries the response was YES. [2023-01-28 04:33:47,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81842 conditions, 7953 events. 5019/7953 cut-off events. For 244884/244971 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48070 event pairs, 877 based on Foata normal form. 85/8028 useless extension candidates. Maximal degree in co-relation 81706. Up to 4387 conditions per place. [2023-01-28 04:33:47,309 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1036 dead transitions. [2023-01-28 04:33:47,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1036 transitions, 22821 flow [2023-01-28 04:33:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:33:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:33:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2023-01-28 04:33:47,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35439093484419265 [2023-01-28 04:33:47,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2023-01-28 04:33:47,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2023-01-28 04:33:47,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:47,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2023-01-28 04:33:47,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states 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 04:33:47,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 04:33:47,314 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 04:33:47,314 INFO L175 Difference]: Start difference. First operand has 333 places, 982 transitions, 19839 flow. Second operand 10 states and 1251 transitions. [2023-01-28 04:33:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1036 transitions, 22821 flow [2023-01-28 04:33:48,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1036 transitions, 22186 flow, removed 45 selfloop flow, removed 10 redundant places. [2023-01-28 04:33:48,487 INFO L231 Difference]: Finished difference. Result has 327 places, 958 transitions, 19481 flow [2023-01-28 04:33:48,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19481, PETRI_PLACES=327, PETRI_TRANSITIONS=958} [2023-01-28 04:33:48,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2023-01-28 04:33:48,488 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 958 transitions, 19481 flow [2023-01-28 04:33:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states 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 04:33:48,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:48,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:48,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-01-28 04:33:48,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 04:33:48,693 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:48,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1471763192, now seen corresponding path program 22 times [2023-01-28 04:33:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:48,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969125029] [2023-01-28 04:33:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:48,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:48,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969125029] [2023-01-28 04:33:48,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969125029] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134677265] [2023-01-28 04:33:48,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:33:48,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:48,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:48,784 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:48,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-01-28 04:33:48,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:33:48,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:48,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:48,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:49,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 04:33:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134677265] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:49,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:49,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-01-28 04:33:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302686733] [2023-01-28 04:33:49,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:49,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:33:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:33:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:33:49,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:49,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 958 transitions, 19481 flow. Second operand has 21 states, 21 states have (on average 120.23809523809524) internal successors, (2525), 21 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states 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 04:33:49,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:49,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:49,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:51,778 INFO L130 PetriNetUnfolder]: 4936/7811 cut-off events. [2023-01-28 04:33:51,778 INFO L131 PetriNetUnfolder]: For 243527/243620 co-relation queries the response was YES. [2023-01-28 04:33:51,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80534 conditions, 7811 events. 4936/7811 cut-off events. For 243527/243620 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 47012 event pairs, 526 based on Foata normal form. 103/7890 useless extension candidates. Maximal degree in co-relation 80398. Up to 2911 conditions per place. [2023-01-28 04:33:51,864 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 604 selfloop transitions, 498 changer transitions 0/1137 dead transitions. [2023-01-28 04:33:51,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1137 transitions, 24707 flow [2023-01-28 04:33:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 04:33:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 04:33:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2028 transitions. [2023-01-28 04:33:51,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590651558073654 [2023-01-28 04:33:51,867 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2028 transitions. [2023-01-28 04:33:51,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2028 transitions. [2023-01-28 04:33:51,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:51,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2028 transitions. [2023-01-28 04:33:51,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.75) internal successors, (2028), 16 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states 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 04:33:51,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states 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 04:33:51,871 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 353.0) internal successors, (6001), 17 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states 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 04:33:51,871 INFO L175 Difference]: Start difference. First operand has 327 places, 958 transitions, 19481 flow. Second operand 16 states and 2028 transitions. [2023-01-28 04:33:51,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1137 transitions, 24707 flow [2023-01-28 04:33:53,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1137 transitions, 24396 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-01-28 04:33:53,162 INFO L231 Difference]: Finished difference. Result has 332 places, 958 transitions, 20411 flow [2023-01-28 04:33:53,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19090, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20411, PETRI_PLACES=332, PETRI_TRANSITIONS=958} [2023-01-28 04:33:53,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2023-01-28 04:33:53,163 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 958 transitions, 20411 flow [2023-01-28 04:33:53,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 120.23809523809524) internal successors, (2525), 21 states have internal predecessors, (2525), 0 states have call successors, (0), 0 states 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 04:33:53,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:53,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:53,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-01-28 04:33:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:53,369 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:53,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1034104112, now seen corresponding path program 23 times [2023-01-28 04:33:53,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:53,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589397241] [2023-01-28 04:33:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:53,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589397241] [2023-01-28 04:33:53,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589397241] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:53,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399213993] [2023-01-28 04:33:53,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:33:53,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:53,497 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:53,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-01-28 04:33:53,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:33:53,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:53,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:33:53,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:53,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399213993] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:53,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:53,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2023-01-28 04:33:53,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825973961] [2023-01-28 04:33:53,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:53,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:33:53,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:53,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:33:53,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:33:53,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 353 [2023-01-28 04:33:53,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 958 transitions, 20411 flow. Second operand has 17 states, 17 states have (on average 117.6470588235294) internal successors, (2000), 17 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:53,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:53,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 353 [2023-01-28 04:33:53,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:33:56,604 INFO L130 PetriNetUnfolder]: 4976/7810 cut-off events. [2023-01-28 04:33:56,604 INFO L131 PetriNetUnfolder]: For 245461/245461 co-relation queries the response was YES. [2023-01-28 04:33:56,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81765 conditions, 7810 events. 4976/7810 cut-off events. For 245461/245461 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 45950 event pairs, 345 based on Foata normal form. 46/7853 useless extension candidates. Maximal degree in co-relation 81630. Up to 2863 conditions per place. [2023-01-28 04:33:56,721 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 584 selfloop transitions, 569 changer transitions 0/1153 dead transitions. [2023-01-28 04:33:56,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1153 transitions, 26748 flow [2023-01-28 04:33:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 04:33:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 04:33:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2438 transitions. [2023-01-28 04:33:56,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3453257790368272 [2023-01-28 04:33:56,723 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2438 transitions. [2023-01-28 04:33:56,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2438 transitions. [2023-01-28 04:33:56,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:33:56,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2438 transitions. [2023-01-28 04:33:56,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 121.9) internal successors, (2438), 20 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states 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 04:33:56,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states 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 04:33:56,728 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 353.0) internal successors, (7413), 21 states have internal predecessors, (7413), 0 states have call successors, (0), 0 states 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 04:33:56,728 INFO L175 Difference]: Start difference. First operand has 332 places, 958 transitions, 20411 flow. Second operand 20 states and 2438 transitions. [2023-01-28 04:33:56,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1153 transitions, 26748 flow [2023-01-28 04:33:58,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1153 transitions, 25541 flow, removed 94 selfloop flow, removed 12 redundant places. [2023-01-28 04:33:58,296 INFO L231 Difference]: Finished difference. Result has 341 places, 993 transitions, 21826 flow [2023-01-28 04:33:58,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=19320, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=533, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=21826, PETRI_PLACES=341, PETRI_TRANSITIONS=993} [2023-01-28 04:33:58,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2023-01-28 04:33:58,298 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 993 transitions, 21826 flow [2023-01-28 04:33:58,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 117.6470588235294) internal successors, (2000), 17 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:33:58,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:33:58,298 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:33:58,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-01-28 04:33:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:58,499 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:33:58,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:33:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash -844689024, now seen corresponding path program 24 times [2023-01-28 04:33:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:33:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708877228] [2023-01-28 04:33:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:33:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:33:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:33:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:33:58,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708877228] [2023-01-28 04:33:58,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708877228] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:33:58,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172252910] [2023-01-28 04:33:58,625 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:33:58,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:33:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:33:58,633 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:33:58,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-01-28 04:33:58,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:33:58,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:33:58,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:33:58,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:33:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:58,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:33:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 04:33:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172252910] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:33:58,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:33:58,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 04:33:58,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653790932] [2023-01-28 04:33:58,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:33:58,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:33:58,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:33:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:33:58,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:33:58,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 353 [2023-01-28 04:33:59,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 993 transitions, 21826 flow. Second operand has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states 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 04:33:59,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:33:59,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 353 [2023-01-28 04:33:59,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:34:01,538 INFO L130 PetriNetUnfolder]: 4844/7599 cut-off events. [2023-01-28 04:34:01,538 INFO L131 PetriNetUnfolder]: For 245831/245942 co-relation queries the response was YES. [2023-01-28 04:34:01,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80606 conditions, 7599 events. 4844/7599 cut-off events. For 245831/245942 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 44737 event pairs, 1064 based on Foata normal form. 41/7614 useless extension candidates. Maximal degree in co-relation 80468. Up to 5787 conditions per place. [2023-01-28 04:34:01,648 INFO L137 encePairwiseOnDemand]: 343/353 looper letters, 702 selfloop transitions, 298 changer transitions 0/1039 dead transitions. [2023-01-28 04:34:01,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1039 transitions, 24366 flow [2023-01-28 04:34:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:34:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:34:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1244 transitions. [2023-01-28 04:34:01,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35240793201133147 [2023-01-28 04:34:01,650 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1244 transitions. [2023-01-28 04:34:01,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1244 transitions. [2023-01-28 04:34:01,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:34:01,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1244 transitions. [2023-01-28 04:34:01,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.4) internal successors, (1244), 10 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states 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 04:34:01,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 04:34:01,653 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 353.0) internal successors, (3883), 11 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states 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 04:34:01,653 INFO L175 Difference]: Start difference. First operand has 341 places, 993 transitions, 21826 flow. Second operand 10 states and 1244 transitions. [2023-01-28 04:34:01,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1039 transitions, 24366 flow [2023-01-28 04:34:02,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1039 transitions, 24002 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-01-28 04:34:02,827 INFO L231 Difference]: Finished difference. Result has 345 places, 994 transitions, 22014 flow [2023-01-28 04:34:02,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21237, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22014, PETRI_PLACES=345, PETRI_TRANSITIONS=994} [2023-01-28 04:34:02,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2023-01-28 04:34:02,828 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 994 transitions, 22014 flow [2023-01-28 04:34:02,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.15789473684211) internal successors, (2283), 19 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states 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 04:34:02,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:34:02,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:34:02,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-01-28 04:34:03,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-01-28 04:34:03,033 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:34:03,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:34:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 964857070, now seen corresponding path program 6 times [2023-01-28 04:34:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:34:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770054001] [2023-01-28 04:34:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:34:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:34:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:34:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:34:04,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:34:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770054001] [2023-01-28 04:34:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770054001] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:34:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633264124] [2023-01-28 04:34:04,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:34:04,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:34:04,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:34:04,262 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:34:04,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-01-28 04:34:04,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:34:04,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:34:04,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 118 conjunts are in the unsatisfiable core [2023-01-28 04:34:04,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:34:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:04,448 INFO L321 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2023-01-28 04:34:04,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2023-01-28 04:34:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:04,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:04,650 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-01-28 04:34:04,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 37 [2023-01-28 04:34:04,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 04:34:04,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:34:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:05,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:05,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-01-28 04:34:05,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:05,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:05,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2023-01-28 04:34:05,329 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:05,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:34:05,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 15 [2023-01-28 04:34:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:34:05,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:34:05,688 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= c_~res1~0 (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse1 (select .cse3 c_~A~0.base)) (.cse0 (select .cse3 c_~B~0.base)) (.cse2 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse0 c_~B~0.offset) c_~res2~0 (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset .cse2)) (select .cse0 (+ .cse2 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-01-28 04:34:05,792 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int))) (or (= (let ((.cse2 (select |c_#memory_int| c_~B~0.base)) (.cse0 (select |c_#memory_int| c_~A~0.base)) (.cse1 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ (select .cse0 (+ c_~A~0.offset .cse1)) (select .cse2 (+ c_~B~0.offset .cse1)) c_~res1~0 (select .cse2 (+ 4 c_~B~0.offset .cse1)) (select .cse0 (+ c_~A~0.offset 4 .cse1)))) (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse4 (select .cse6 c_~A~0.base)) (.cse3 (select .cse6 c_~B~0.base)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4))) (+ (select .cse3 c_~B~0.offset) c_~res2~0 (select .cse4 c_~A~0.offset) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 c_~B~0.offset)))))) (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1))) is different from false [2023-01-28 04:34:05,922 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread3Thread1of1ForFork1_~i~2#1_144| Int) (v_ArrVal_1762 (Array Int Int)) (v_ArrVal_1761 (Array Int Int)) (v_ArrVal_1760 (Array Int Int))) (or (<= c_~N~0 |v_thread3Thread1of1ForFork1_~i~2#1_144|) (< |v_thread3Thread1of1ForFork1_~i~2#1_144| 1) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1760))) (= (let ((.cse1 (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse0 (select .cse2 c_~A~0.base))) (+ (select .cse0 (+ c_~A~0.offset 4)) c_~res1~0 (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse1 (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (select .cse0 c_~A~0.offset))) (let ((.cse6 (store (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1761) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1762))) (let ((.cse3 (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse5 (* |v_thread3Thread1of1ForFork1_~i~2#1_144| 4)) (.cse4 (select .cse6 c_~A~0.base))) (+ (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (select .cse4 (+ c_~A~0.offset .cse5)) (select .cse3 (+ .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~res2~0 (select .cse4 c_~A~0.offset)))))))) is different from false [2023-01-28 04:34:05,930 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:05,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 118 [2023-01-28 04:34:06,074 INFO L321 Elim1Store]: treesize reduction 16, result has 89.7 percent of original size [2023-01-28 04:34:06,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110582 treesize of output 86145 [2023-01-28 04:34:06,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:06,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:06,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:06,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2614 treesize of output 2398 [2023-01-28 04:34:06,391 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:06,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:06,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:06,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 2358 treesize of output 2022 [2023-01-28 04:34:06,520 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:06,521 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:34:06,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:34:06,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1910 treesize of output 1438 [2023-01-28 04:35:03,773 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:35:22,249 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:35:29,125 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 04:37:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-01-28 04:37:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633264124] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:37:27,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:37:27,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2023-01-28 04:37:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436673199] [2023-01-28 04:37:27,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:37:27,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-01-28 04:37:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:37:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-01-28 04:37:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1475, Unknown=13, NotChecked=240, Total=1892 [2023-01-28 04:37:27,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 353 [2023-01-28 04:37:27,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 994 transitions, 22014 flow. Second operand has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states 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 04:37:27,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:37:27,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 353 [2023-01-28 04:37:27,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:37:35,020 INFO L130 PetriNetUnfolder]: 7755/12152 cut-off events. [2023-01-28 04:37:35,020 INFO L131 PetriNetUnfolder]: For 424246/424246 co-relation queries the response was YES. [2023-01-28 04:37:35,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132468 conditions, 12152 events. 7755/12152 cut-off events. For 424246/424246 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 76776 event pairs, 639 based on Foata normal form. 13/12159 useless extension candidates. Maximal degree in co-relation 132329. Up to 7555 conditions per place. [2023-01-28 04:37:35,203 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 1029 selfloop transitions, 765 changer transitions 16/1810 dead transitions. [2023-01-28 04:37:35,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1810 transitions, 44533 flow [2023-01-28 04:37:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-01-28 04:37:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-01-28 04:37:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2536 transitions. [2023-01-28 04:37:35,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2565762849048968 [2023-01-28 04:37:35,205 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2536 transitions. [2023-01-28 04:37:35,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2536 transitions. [2023-01-28 04:37:35,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:37:35,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2536 transitions. [2023-01-28 04:37:35,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 90.57142857142857) internal successors, (2536), 28 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states 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 04:37:35,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 0 states have call successors, (0), 0 states 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 04:37:35,213 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 353.0) internal successors, (10237), 29 states have internal predecessors, (10237), 0 states have call successors, (0), 0 states 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 04:37:35,213 INFO L175 Difference]: Start difference. First operand has 345 places, 994 transitions, 22014 flow. Second operand 28 states and 2536 transitions. [2023-01-28 04:37:35,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1810 transitions, 44533 flow [2023-01-28 04:37:38,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1810 transitions, 43349 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 04:37:38,983 INFO L231 Difference]: Finished difference. Result has 377 places, 1524 transitions, 37404 flow [2023-01-28 04:37:38,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=21444, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=37404, PETRI_PLACES=377, PETRI_TRANSITIONS=1524} [2023-01-28 04:37:38,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2023-01-28 04:37:38,984 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1524 transitions, 37404 flow [2023-01-28 04:37:38,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 83.54545454545455) internal successors, (3676), 44 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states 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 04:37:38,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:37:38,985 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:37:38,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-01-28 04:37:39,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:37:39,190 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:37:39,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:37:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash 66394832, now seen corresponding path program 7 times [2023-01-28 04:37:39,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:37:39,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359960557] [2023-01-28 04:37:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:37:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:37:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:37:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:37:39,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:37:39,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359960557] [2023-01-28 04:37:39,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359960557] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:37:39,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305716621] [2023-01-28 04:37:39,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:37:39,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:37:39,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:37:39,905 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:37:39,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-01-28 04:37:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:37:40,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 89 conjunts are in the unsatisfiable core [2023-01-28 04:37:40,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:37:40,409 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:37:40,427 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-01-28 04:37:40,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 37 [2023-01-28 04:37:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:37:40,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:37:40,930 INFO L321 Elim1Store]: treesize reduction 16, result has 95.1 percent of original size [2023-01-28 04:37:40,931 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 8 new quantified variables, introduced 28 case distinctions, treesize of input 71 treesize of output 326 [2023-01-28 04:38:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:38:09,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305716621] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:38:09,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:38:09,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 30 [2023-01-28 04:38:09,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624262612] [2023-01-28 04:38:09,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:38:09,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-28 04:38:09,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:38:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-28 04:38:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-01-28 04:38:09,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 353 [2023-01-28 04:38:09,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1524 transitions, 37404 flow. Second operand has 32 states, 32 states have (on average 97.96875) internal successors, (3135), 32 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 04:38:09,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:38:09,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 353 [2023-01-28 04:38:09,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:38:22,246 INFO L130 PetriNetUnfolder]: 11680/18604 cut-off events. [2023-01-28 04:38:22,246 INFO L131 PetriNetUnfolder]: For 763154/763154 co-relation queries the response was YES. [2023-01-28 04:38:22,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214074 conditions, 18604 events. 11680/18604 cut-off events. For 763154/763154 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 130586 event pairs, 539 based on Foata normal form. 12/18615 useless extension candidates. Maximal degree in co-relation 213922. Up to 9991 conditions per place. [2023-01-28 04:38:22,497 INFO L137 encePairwiseOnDemand]: 336/353 looper letters, 1215 selfloop transitions, 1630 changer transitions 21/2866 dead transitions. [2023-01-28 04:38:22,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 2866 transitions, 73839 flow [2023-01-28 04:38:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-01-28 04:38:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-01-28 04:38:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 5478 transitions. [2023-01-28 04:38:22,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2984310307256483 [2023-01-28 04:38:22,501 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 5478 transitions. [2023-01-28 04:38:22,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 5478 transitions. [2023-01-28 04:38:22,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:38:22,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 5478 transitions. [2023-01-28 04:38:22,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 105.34615384615384) internal successors, (5478), 52 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states 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 04:38:22,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states 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 04:38:22,513 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 353.0) internal successors, (18709), 53 states have internal predecessors, (18709), 0 states have call successors, (0), 0 states 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 04:38:22,513 INFO L175 Difference]: Start difference. First operand has 377 places, 1524 transitions, 37404 flow. Second operand 52 states and 5478 transitions. [2023-01-28 04:38:22,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 2866 transitions, 73839 flow [2023-01-28 04:38:29,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 2866 transitions, 71805 flow, removed 1009 selfloop flow, removed 5 redundant places. [2023-01-28 04:38:29,665 INFO L231 Difference]: Finished difference. Result has 450 places, 2499 transitions, 67777 flow [2023-01-28 04:38:29,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=36352, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=67777, PETRI_PLACES=450, PETRI_TRANSITIONS=2499} [2023-01-28 04:38:29,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2023-01-28 04:38:29,666 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 2499 transitions, 67777 flow [2023-01-28 04:38:29,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 97.96875) internal successors, (3135), 32 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 04:38:29,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:38:29,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:38:29,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-01-28 04:38:29,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:38:29,874 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:38:29,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:38:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1612068568, now seen corresponding path program 8 times [2023-01-28 04:38:29,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:38:29,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788476652] [2023-01-28 04:38:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:38:29,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:38:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:38:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:38:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:38:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788476652] [2023-01-28 04:38:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788476652] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:38:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401271125] [2023-01-28 04:38:30,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:38:30,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:38:30,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:38:30,902 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:38:30,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-01-28 04:38:31,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:38:31,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:38:31,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 106 conjunts are in the unsatisfiable core [2023-01-28 04:38:31,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:38:31,283 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 04:38:31,334 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 04:38:31,388 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 04:38:31,437 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 04:38:31,801 INFO L321 Elim1Store]: treesize reduction 48, result has 54.3 percent of original size [2023-01-28 04:38:31,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 51 treesize of output 71 [2023-01-28 04:38:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:38:31,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:11,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 86 [2023-01-28 04:40:11,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,408 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 20470 treesize of output 18750 [2023-01-28 04:40:11,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2326 treesize of output 1746 [2023-01-28 04:40:11,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1686 treesize of output 1426 [2023-01-28 04:40:11,673 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1366 treesize of output 1266 Received shutdown request... [2023-01-28 04:40:43,463 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:40:43,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:43,482 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 04:40:43,482 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:40:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-01-28 04:40:43,671 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-5-3-10-4-4-3-4-3-3-2-2-2-1 context. [2023-01-28 04:40:43,673 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:40:43,673 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:40:43,673 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:40:43,673 INFO L445 BasicCegarLoop]: Path program histogram: [24, 8, 1, 1, 1] [2023-01-28 04:40:43,676 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:40:43,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:40:43,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:40:43 BasicIcfg [2023-01-28 04:40:43,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:40:43,678 INFO L158 Benchmark]: Toolchain (without parser) took 829005.47ms. Allocated memory was 427.8MB in the beginning and 9.8GB in the end (delta: 9.3GB). Free memory was 388.0MB in the beginning and 4.8GB in the end (delta: -4.4GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-01-28 04:40:43,679 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 427.8MB. Free memory is still 376.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:40:43,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.21ms. Allocated memory is still 427.8MB. Free memory was 388.0MB in the beginning and 376.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:40:43,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.91ms. Allocated memory is still 427.8MB. Free memory was 376.0MB in the beginning and 373.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:40:43,679 INFO L158 Benchmark]: Boogie Preprocessor took 19.69ms. Allocated memory is still 427.8MB. Free memory was 373.5MB in the beginning and 371.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:40:43,679 INFO L158 Benchmark]: RCFGBuilder took 657.78ms. Allocated memory was 427.8MB in the beginning and 610.3MB in the end (delta: 182.5MB). Free memory was 371.5MB in the beginning and 560.6MB in the end (delta: -189.2MB). Peak memory consumption was 55.7MB. Max. memory is 16.0GB. [2023-01-28 04:40:43,680 INFO L158 Benchmark]: TraceAbstraction took 828113.20ms. Allocated memory was 610.3MB in the beginning and 9.8GB in the end (delta: 9.2GB). Free memory was 560.6MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-01-28 04:40:43,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 427.8MB. Free memory is still 376.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 181.21ms. Allocated memory is still 427.8MB. Free memory was 388.0MB in the beginning and 376.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.91ms. Allocated memory is still 427.8MB. Free memory was 376.0MB in the beginning and 373.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.69ms. Allocated memory is still 427.8MB. Free memory was 373.5MB in the beginning and 371.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 657.78ms. Allocated memory was 427.8MB in the beginning and 610.3MB in the end (delta: 182.5MB). Free memory was 371.5MB in the beginning and 560.6MB in the end (delta: -189.2MB). Peak memory consumption was 55.7MB. Max. memory is 16.0GB. * TraceAbstraction took 828113.20ms. Allocated memory was 610.3MB in the beginning and 9.8GB in the end (delta: 9.2GB). Free memory was 560.6MB in the beginning and 4.8GB in the end (delta: -4.2GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 161 PlacesBefore, 31 PlacesAfterwards, 167 TransitionsBefore, 26 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 8 FixpointIterations, 105 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 6 ConcurrentYvCompositions, 11 ChoiceCompositions, 173 TotalNumberOfCompositions, 1529 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1434, independent: 1416, independent conditional: 0, independent unconditional: 1416, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 698, independent: 690, independent conditional: 0, independent unconditional: 690, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1434, independent: 726, independent conditional: 0, independent unconditional: 726, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 698, unknown conditional: 0, unknown unconditional: 698] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-5-3-10-4-4-3-4-3-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 91]: 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 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-5-3-10-4-4-3-4-3-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-5-3-10-4-4-3-4-3-3-2-2-2-1 context. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-48-5-3-10-4-4-3-4-3-3-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 195 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 828.0s, OverallIterations: 35, TraceHistogramMax: 2, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 200.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 60 mSolverCounterUnknown, 7385 SdHoareTripleChecker+Valid, 16.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7385 mSDsluCounter, 2213 SdHoareTripleChecker+Invalid, 13.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1131 IncrementalHoareTripleChecker+Unchecked, 1998 mSDsCounter, 680 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28027 IncrementalHoareTripleChecker+Invalid, 29898 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 680 mSolverCounterUnsat, 215 mSDtfsCounter, 28027 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2510 GetRequests, 1187 SyntacticMatches, 52 SemanticMatches, 1271 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 13823 ImplicationChecksByTransitivity, 44.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67777occurred in iteration=34, InterpolantAutomatonStates: 768, 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: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 476.1s InterpolantComputationTime, 1725 NumberOfCodeBlocks, 1725 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 2468 ConstructedInterpolants, 59 QuantifiedInterpolants, 25901 SizeOfPredicates, 495 NumberOfNonLiveVariables, 10157 ConjunctsInSsa, 1116 ConjunctsInUnsatCore, 98 InterpolantComputations, 3 PerfectInterpolantSequences, 305/613 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