/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/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:13:48,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:13:48,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:13:48,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:13:48,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:13:48,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:13:48,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:13:48,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:13:48,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:13:48,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:13:48,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:13:48,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:13:48,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:13:48,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:13:48,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:13:48,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:13:48,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:13:48,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:13:48,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:13:48,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:13:48,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:13:48,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:13:48,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:13:48,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:13:48,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:13:48,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:13:48,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:13:48,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:13:48,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:13:48,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:13:48,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:13:48,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:13:48,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:13:48,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:13:48,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:13:48,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:13:48,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:13:48,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:13:48,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:13:48,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:13:48,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:13:48,569 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 03:13:48,594 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:13:48,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:13:48,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:13:48,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:13:48,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:13:48,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:13:48,596 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:13:48,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:13:48,596 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:13:48,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:13:48,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:13:48,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:13:48,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:13:48,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:13:48,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:13:48,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:13:48,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:13:48,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:13:48,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:13:48,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:13:48,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:13:48,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:13:48,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:13:48,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:13:48,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:13:48,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:13:48,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:13:48,794 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:13:48,794 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:13:48,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-01-28 03:13:49,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:13:49,882 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:13:49,882 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-01-28 03:13:49,887 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1573431d5/8a01cde91ad34611ab7fd354e02a157b/FLAGe23e61c0d [2023-01-28 03:13:49,900 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1573431d5/8a01cde91ad34611ab7fd354e02a157b [2023-01-28 03:13:49,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:13:49,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:13:49,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:13:49,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:13:49,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:13:49,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:13:49" (1/1) ... [2023-01-28 03:13:49,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c5c0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:49, skipping insertion in model container [2023-01-28 03:13:49,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:13:49" (1/1) ... [2023-01-28 03:13:49,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:13:49,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:13:50,053 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/mult-dist.wvr.c[2116,2129] [2023-01-28 03:13:50,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:13:50,067 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:13:50,089 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/mult-dist.wvr.c[2116,2129] [2023-01-28 03:13:50,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:13:50,103 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:13:50,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50 WrapperNode [2023-01-28 03:13:50,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:13:50,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:13:50,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:13:50,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:13:50,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,135 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-01-28 03:13:50,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:13:50,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:13:50,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:13:50,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:13:50,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:13:50,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:13:50,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:13:50,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:13:50,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (1/1) ... [2023-01-28 03:13:50,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:13:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:50,181 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 03:13:50,202 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 03:13:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:13:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:13:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:13:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:13:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:13:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:13:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:13:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:13:50,213 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 03:13:50,270 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:13:50,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:13:50,437 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:13:50,442 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:13:50,442 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 03:13:50,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:13:50 BoogieIcfgContainer [2023-01-28 03:13:50,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:13:50,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:13:50,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:13:50,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:13:50,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:13:49" (1/3) ... [2023-01-28 03:13:50,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d5392e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:13:50, skipping insertion in model container [2023-01-28 03:13:50,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:13:50" (2/3) ... [2023-01-28 03:13:50,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d5392e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:13:50, skipping insertion in model container [2023-01-28 03:13:50,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:13:50" (3/3) ... [2023-01-28 03:13:50,448 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-01-28 03:13:50,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:13:50,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:13:50,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:13:50,546 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 03:13:50,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 234 flow [2023-01-28 03:13:50,640 INFO L130 PetriNetUnfolder]: 7/102 cut-off events. [2023-01-28 03:13:50,641 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:13:50,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 7/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-01-28 03:13:50,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 234 flow [2023-01-28 03:13:50,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:50,650 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:13:50,660 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:50,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:50,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 202 flow [2023-01-28 03:13:50,691 INFO L130 PetriNetUnfolder]: 7/92 cut-off events. [2023-01-28 03:13:50,691 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:13:50,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 92 events. 7/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-01-28 03:13:50,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 03:13:52,793 INFO L134 LiptonReduction]: Checked pairs total: 1314 [2023-01-28 03:13:52,793 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-01-28 03:13:52,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:13:52,805 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;@7b432475, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:13:52,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 03:13:52,809 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-01-28 03:13:52,809 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:13:52,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:52,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:52,810 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 03:13:52,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1681500982, now seen corresponding path program 1 times [2023-01-28 03:13:52,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:52,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039396227] [2023-01-28 03:13:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:52,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:53,305 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 03:13:53,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:53,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039396227] [2023-01-28 03:13:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039396227] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:53,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:53,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 03:13:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789244264] [2023-01-28 03:13:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:53,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:13:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:13:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:13:53,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 183 [2023-01-28 03:13:53,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:53,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 183 [2023-01-28 03:13:53,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:53,438 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-01-28 03:13:53,438 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-01-28 03:13:53,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1611 event pairs, 39 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-01-28 03:13:53,445 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-01-28 03:13:53,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-01-28 03:13:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:13:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:13:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-01-28 03:13:53,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409836065573771 [2023-01-28 03:13:53,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-01-28 03:13:53,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-01-28 03:13:53,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:53,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-01-28 03:13:53,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,464 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 297 transitions. [2023-01-28 03:13:53,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-01-28 03:13:53,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 03:13:53,468 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-01-28 03:13:53,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-01-28 03:13:53,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-01-28 03:13:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-01-28 03:13:53,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:53,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:13:53,475 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 03:13:53,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash -296399337, now seen corresponding path program 1 times [2023-01-28 03:13:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:53,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568468669] [2023-01-28 03:13:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:53,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:53,664 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 03:13:53,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568468669] [2023-01-28 03:13:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568468669] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:53,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:53,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:13:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516044076] [2023-01-28 03:13:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:53,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:13:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:13:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:13:53,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:13:53,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:53,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:13:53,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:53,932 INFO L130 PetriNetUnfolder]: 596/906 cut-off events. [2023-01-28 03:13:53,932 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-01-28 03:13:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 906 events. 596/906 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3355 event pairs, 166 based on Foata normal form. 6/912 useless extension candidates. Maximal degree in co-relation 616. Up to 420 conditions per place. [2023-01-28 03:13:53,936 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 69 selfloop transitions, 8 changer transitions 8/85 dead transitions. [2023-01-28 03:13:53,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 85 transitions, 416 flow [2023-01-28 03:13:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:13:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:13:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-01-28 03:13:53,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707259953161593 [2023-01-28 03:13:53,939 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-01-28 03:13:53,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-01-28 03:13:53,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:53,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-01-28 03:13:53,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:13:53,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:13:53,943 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 603 transitions. [2023-01-28 03:13:53,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 85 transitions, 416 flow [2023-01-28 03:13:53,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 85 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 03:13:53,945 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 139 flow [2023-01-28 03:13:53,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-28 03:13:53,946 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-01-28 03:13:53,946 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 139 flow [2023-01-28 03:13:53,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:53,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:53,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:53,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:13:53,947 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 03:13:53,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -748397025, now seen corresponding path program 2 times [2023-01-28 03:13:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:53,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47835587] [2023-01-28 03:13:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:53,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:54,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47835587] [2023-01-28 03:13:54,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47835587] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:54,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408306830] [2023-01-28 03:13:54,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:13:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:54,093 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 03:13:54,140 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 03:13:54,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:13:54,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:13:54,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 03:13:54,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:54,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:13:54,431 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 03:13:54,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408306830] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:54,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:13:54,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-01-28 03:13:54,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410318850] [2023-01-28 03:13:54,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:54,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:13:54,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:54,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:13:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-01-28 03:13:54,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-01-28 03:13:54,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:54,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:54,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-01-28 03:13:54,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:54,719 INFO L130 PetriNetUnfolder]: 832/1268 cut-off events. [2023-01-28 03:13:54,720 INFO L131 PetriNetUnfolder]: For 1476/1531 co-relation queries the response was YES. [2023-01-28 03:13:54,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4023 conditions, 1268 events. 832/1268 cut-off events. For 1476/1531 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5353 event pairs, 172 based on Foata normal form. 6/1272 useless extension candidates. Maximal degree in co-relation 1710. Up to 409 conditions per place. [2023-01-28 03:13:54,726 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 99 selfloop transitions, 17 changer transitions 1/118 dead transitions. [2023-01-28 03:13:54,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 118 transitions, 705 flow [2023-01-28 03:13:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:13:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:13:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 729 transitions. [2023-01-28 03:13:54,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979508196721312 [2023-01-28 03:13:54,728 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 729 transitions. [2023-01-28 03:13:54,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 729 transitions. [2023-01-28 03:13:54,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:54,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 729 transitions. [2023-01-28 03:13:54,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:54,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:54,732 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:54,732 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 139 flow. Second operand 8 states and 729 transitions. [2023-01-28 03:13:54,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 118 transitions, 705 flow [2023-01-28 03:13:54,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 118 transitions, 675 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 03:13:54,736 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 294 flow [2023-01-28 03:13:54,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=294, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-01-28 03:13:54,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-01-28 03:13:54,736 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 294 flow [2023-01-28 03:13:54,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:54,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:54,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:54,750 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 03:13:54,948 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 03:13:54,948 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 03:13:54,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1550280123, now seen corresponding path program 3 times [2023-01-28 03:13:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040620647] [2023-01-28 03:13:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:55,094 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 03:13:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040620647] [2023-01-28 03:13:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040620647] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:13:55,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:13:55,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:13:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94053040] [2023-01-28 03:13:55,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:13:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:13:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:13:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:13:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:13:55,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:13:55,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 294 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:13:55,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:13:55,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:13:55,436 INFO L130 PetriNetUnfolder]: 1203/1834 cut-off events. [2023-01-28 03:13:55,436 INFO L131 PetriNetUnfolder]: For 5174/5174 co-relation queries the response was YES. [2023-01-28 03:13:55,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 1834 events. 1203/1834 cut-off events. For 5174/5174 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8187 event pairs, 336 based on Foata normal form. 12/1846 useless extension candidates. Maximal degree in co-relation 5374. Up to 928 conditions per place. [2023-01-28 03:13:55,447 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 108 selfloop transitions, 29 changer transitions 18/155 dead transitions. [2023-01-28 03:13:55,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 155 transitions, 1178 flow [2023-01-28 03:13:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:13:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:13:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 860 transitions. [2023-01-28 03:13:55,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46994535519125685 [2023-01-28 03:13:55,449 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 860 transitions. [2023-01-28 03:13:55,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 860 transitions. [2023-01-28 03:13:55,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:13:55,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 860 transitions. [2023-01-28 03:13:55,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,455 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,455 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 294 flow. Second operand 10 states and 860 transitions. [2023-01-28 03:13:55,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 155 transitions, 1178 flow [2023-01-28 03:13:55,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 155 transitions, 1174 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 03:13:55,469 INFO L231 Difference]: Finished difference. Result has 62 places, 73 transitions, 620 flow [2023-01-28 03:13:55,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=620, PETRI_PLACES=62, PETRI_TRANSITIONS=73} [2023-01-28 03:13:55,470 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-01-28 03:13:55,470 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 73 transitions, 620 flow [2023-01-28 03:13:55,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:13:55,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:13:55,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:13:55,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:13:55,471 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 03:13:55,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:13:55,472 INFO L85 PathProgramCache]: Analyzing trace with hash 382118611, now seen corresponding path program 4 times [2023-01-28 03:13:55,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:13:55,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273358203] [2023-01-28 03:13:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:13:55,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:13:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:13:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:13:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273358203] [2023-01-28 03:13:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273358203] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:13:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056740940] [2023-01-28 03:13:55,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:13:55,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:13:55,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:13:55,642 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 03:13:55,670 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 03:13:55,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:13:55,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:13:55,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:13:55,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:13:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:13:55,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:14:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:14:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056740940] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:14:02,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:14:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-01-28 03:14:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896000171] [2023-01-28 03:14:02,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:14:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:14:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:14:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:14:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=170, Unknown=2, NotChecked=0, Total=240 [2023-01-28 03:14:02,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:14:02,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 73 transitions, 620 flow. Second operand has 16 states, 16 states have (on average 77.125) internal successors, (1234), 16 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:14:02,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:14:02,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:14:02,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:14:04,670 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse3 (mod c_thread2Thread1of1ForFork2_~i~1 4294967296))) (and (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse0 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 0) (< 1 .cse0) (let ((.cse1 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse1 .cse2) 4294967296) 4294967296) .cse3) .cse1)) (< .cse0 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse4 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse4) (let ((.cse5 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse5 .cse2) 4294967296) 4294967296) .cse3) .cse5)) (< .cse4 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-01-28 03:14:06,835 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (.cse2 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse3 (mod c_thread2Thread1of1ForFork2_~i~1 4294967296))) (and (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse0 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 0) (< 1 .cse0) (let ((.cse1 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse1 .cse2) 4294967296) 4294967296) .cse3) .cse1)) (< .cse0 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))) (or (< .cse4 (mod c_~a~0 4294967296)) (let ((.cse5 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse5 .cse2) 4294967296) 4294967296) .cse3) .cse5))) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse6 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 .cse4) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse6) (let ((.cse7 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse7 .cse2) 4294967296) 4294967296) .cse3) .cse7)) (< .cse6 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-01-28 03:14:19,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:21,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:23,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:25,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:27,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:29,714 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse3 (mod c_thread2Thread1of1ForFork2_~i~1 4294967296))) (and (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse0 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 0) (< 1 .cse0) (let ((.cse1 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse1 .cse2) 4294967296) 4294967296) .cse3) .cse1)) (< .cse0 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))) (let ((.cse4 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse4 .cse2) 4294967296) 4294967296) .cse3) .cse4)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse5 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse5) (let ((.cse6 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse6 .cse2) 4294967296) 4294967296) .cse3) .cse6)) (< .cse5 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-01-28 03:14:31,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:33,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:35,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:37,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:39,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:41,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:43,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:46,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:48,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:50,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:52,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:54,084 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296)) (.cse2 (mod c_thread2Thread1of1ForFork2_~i~1 4294967296))) (and (< .cse0 (mod (+ c_~b~0 c_~a~0) 4294967296)) (= c_thread2Thread1of1ForFork2_~i~1 0) (let ((.cse1 (* 4294967295 c_~a~0))) (< (+ (* (div (+ .cse1 .cse0) 4294967296) 4294967296) .cse2) .cse1)) (forall ((aux_div_aux_mod_~a~0_21_32 Int) (aux_mod_aux_mod_~a~0_21_32 Int)) (let ((.cse3 (+ aux_mod_aux_mod_~a~0_21_32 (* aux_div_aux_mod_~a~0_21_32 4294967296)))) (or (<= aux_mod_aux_mod_~a~0_21_32 (mod c_thread1Thread1of1ForFork1_~i~0 4294967296)) (< (mod (+ c_thread1Thread1of1ForFork1_~i~0 1) 4294967296) .cse3) (let ((.cse4 (* aux_mod_aux_mod_~a~0_21_32 4294967295))) (< (+ (* (div (+ .cse4 .cse0) 4294967296) 4294967296) .cse2) .cse4)) (< .cse3 0) (>= aux_mod_aux_mod_~a~0_21_32 4294967296)))))) is different from false [2023-01-28 03:14:56,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:14:58,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:00,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:02,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:04,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:06,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:08,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:10,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:12,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:14,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:16,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:18,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:20,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:22,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:24,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:26,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:28,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:30,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:32,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:34,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:36,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:38,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:41,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:43,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:45,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:47,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:49,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:51,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:15:51,162 INFO L130 PetriNetUnfolder]: 2496/3864 cut-off events. [2023-01-28 03:15:51,163 INFO L131 PetriNetUnfolder]: For 17690/17690 co-relation queries the response was YES. [2023-01-28 03:15:51,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17294 conditions, 3864 events. 2496/3864 cut-off events. For 17690/17690 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20171 event pairs, 319 based on Foata normal form. 48/3912 useless extension candidates. Maximal degree in co-relation 15363. Up to 1344 conditions per place. [2023-01-28 03:15:51,188 INFO L137 encePairwiseOnDemand]: 170/183 looper letters, 203 selfloop transitions, 127 changer transitions 3/333 dead transitions. [2023-01-28 03:15:51,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 333 transitions, 2787 flow [2023-01-28 03:15:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 03:15:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 03:15:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2054 transitions. [2023-01-28 03:15:51,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46766848816029144 [2023-01-28 03:15:51,193 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2054 transitions. [2023-01-28 03:15:51,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2054 transitions. [2023-01-28 03:15:51,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:15:51,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2054 transitions. [2023-01-28 03:15:51,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 85.58333333333333) internal successors, (2054), 24 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:51,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 183.0) internal successors, (4575), 25 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:51,203 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 183.0) internal successors, (4575), 25 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:51,204 INFO L175 Difference]: Start difference. First operand has 62 places, 73 transitions, 620 flow. Second operand 24 states and 2054 transitions. [2023-01-28 03:15:51,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 333 transitions, 2787 flow [2023-01-28 03:15:51,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 333 transitions, 2729 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-01-28 03:15:51,238 INFO L231 Difference]: Finished difference. Result has 105 places, 169 transitions, 1935 flow [2023-01-28 03:15:51,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1935, PETRI_PLACES=105, PETRI_TRANSITIONS=169} [2023-01-28 03:15:51,239 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2023-01-28 03:15:51,239 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 169 transitions, 1935 flow [2023-01-28 03:15:51,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 77.125) internal successors, (1234), 16 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:51,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:15:51,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:15:51,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:15:51,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:51,445 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 03:15:51,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:15:51,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2033487921, now seen corresponding path program 1 times [2023-01-28 03:15:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:15:51,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732457599] [2023-01-28 03:15:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:15:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732457599] [2023-01-28 03:15:51,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732457599] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:15:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691875943] [2023-01-28 03:15:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:51,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:51,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:15:51,601 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 03:15:51,603 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 03:15:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:51,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 03:15:51,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:15:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:51,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:15:51,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:51,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691875943] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:51,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:15:51,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-01-28 03:15:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096626523] [2023-01-28 03:15:51,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:51,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:15:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:51,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:15:51,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:15:51,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:15:51,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 169 transitions, 1935 flow. Second operand has 10 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:51,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:51,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:15:51,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:52,515 INFO L130 PetriNetUnfolder]: 2754/4321 cut-off events. [2023-01-28 03:15:52,516 INFO L131 PetriNetUnfolder]: For 81554/81554 co-relation queries the response was YES. [2023-01-28 03:15:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32673 conditions, 4321 events. 2754/4321 cut-off events. For 81554/81554 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23695 event pairs, 554 based on Foata normal form. 38/4359 useless extension candidates. Maximal degree in co-relation 28097. Up to 1622 conditions per place. [2023-01-28 03:15:52,553 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 230 selfloop transitions, 78 changer transitions 4/312 dead transitions. [2023-01-28 03:15:52,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 312 transitions, 4144 flow [2023-01-28 03:15:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:15:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:15:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 873 transitions. [2023-01-28 03:15:52,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47704918032786886 [2023-01-28 03:15:52,555 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 873 transitions. [2023-01-28 03:15:52,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 873 transitions. [2023-01-28 03:15:52,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:15:52,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 873 transitions. [2023-01-28 03:15:52,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.3) internal successors, (873), 10 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:52,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:52,559 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:52,559 INFO L175 Difference]: Start difference. First operand has 105 places, 169 transitions, 1935 flow. Second operand 10 states and 873 transitions. [2023-01-28 03:15:52,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 312 transitions, 4144 flow [2023-01-28 03:15:52,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 312 transitions, 3838 flow, removed 153 selfloop flow, removed 0 redundant places. [2023-01-28 03:15:52,673 INFO L231 Difference]: Finished difference. Result has 119 places, 200 transitions, 2404 flow [2023-01-28 03:15:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2404, PETRI_PLACES=119, PETRI_TRANSITIONS=200} [2023-01-28 03:15:52,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2023-01-28 03:15:52,674 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 200 transitions, 2404 flow [2023-01-28 03:15:52,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:52,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:15:52,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:15:52,689 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 03:15:52,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:52,879 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 03:15:52,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:15:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1972104569, now seen corresponding path program 2 times [2023-01-28 03:15:52,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:15:52,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457443915] [2023-01-28 03:15:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:15:52,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:15:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:15:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:15:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457443915] [2023-01-28 03:15:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457443915] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:15:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96145744] [2023-01-28 03:15:52,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:15:52,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:15:52,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:15:52,981 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 03:15:52,983 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 03:15:53,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:15:53,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:15:53,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 03:15:53,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:15:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:53,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:15:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:15:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96145744] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:15:53,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:15:53,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 10 [2023-01-28 03:15:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978080817] [2023-01-28 03:15:53,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:15:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 03:15:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:15:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 03:15:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:15:53,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:15:53,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 200 transitions, 2404 flow. Second operand has 10 states, 10 states have (on average 77.6) internal successors, (776), 10 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:15:53,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:15:53,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:15:53,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:15:56,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:03,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:06,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:08,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:11,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:19,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:21,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:23,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:25,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:27,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:30,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:34,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:36,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:38,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:40,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:42,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:44,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:47,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:48,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:51,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:53,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:16:58,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:00,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:03,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:07,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:09,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:13,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:15,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:18,993 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_thread3Thread1of1ForFork0_~i~2 4294967296))) (and (forall ((aux_mod_~b~0_40 Int)) (or (< (mod c_thread2Thread1of1ForFork2_~i~1 4294967296) (mod (+ (* 4294967295 aux_mod_~b~0_40) 4294967295) 4294967296)) (< 4294967294 (+ .cse0 aux_mod_~b~0_40)) (> 0 aux_mod_~b~0_40))) (= c_thread1Thread1of1ForFork1_~i~0 0) (<= (+ (* (div c_~a~0 4294967296) 4294967296) 1) c_~a~0) (< (+ c_~b~0 (* (div (+ 4294967295 (- c_~b~0)) 4294967296) 4294967296)) (+ .cse0 1)))) is different from false [2023-01-28 03:17:20,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:23,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:25,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:27,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:28,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:30,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:32,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:35,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:37,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:39,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:43,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:44,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:45,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:48,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:17:56,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:18:00,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:18:02,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:18:05,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-01-28 03:18:05,864 INFO L130 PetriNetUnfolder]: 3572/5609 cut-off events. [2023-01-28 03:18:05,865 INFO L131 PetriNetUnfolder]: For 125494/125494 co-relation queries the response was YES. [2023-01-28 03:18:05,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45178 conditions, 5609 events. 3572/5609 cut-off events. For 125494/125494 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 32020 event pairs, 578 based on Foata normal form. 20/5603 useless extension candidates. Maximal degree in co-relation 40186. Up to 2169 conditions per place. [2023-01-28 03:18:05,903 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 248 selfloop transitions, 165 changer transitions 2/415 dead transitions. [2023-01-28 03:18:05,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 415 transitions, 5895 flow [2023-01-28 03:18:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 03:18:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 03:18:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1221 transitions. [2023-01-28 03:18:05,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765807962529274 [2023-01-28 03:18:05,906 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1221 transitions. [2023-01-28 03:18:05,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1221 transitions. [2023-01-28 03:18:05,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:05,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1221 transitions. [2023-01-28 03:18:05,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.21428571428571) internal successors, (1221), 14 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:05,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:05,911 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:05,911 INFO L175 Difference]: Start difference. First operand has 119 places, 200 transitions, 2404 flow. Second operand 14 states and 1221 transitions. [2023-01-28 03:18:05,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 415 transitions, 5895 flow [2023-01-28 03:18:06,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 415 transitions, 5774 flow, removed 39 selfloop flow, removed 1 redundant places. [2023-01-28 03:18:06,115 INFO L231 Difference]: Finished difference. Result has 141 places, 283 transitions, 4147 flow [2023-01-28 03:18:06,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4147, PETRI_PLACES=141, PETRI_TRANSITIONS=283} [2023-01-28 03:18:06,116 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2023-01-28 03:18:06,116 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 283 transitions, 4147 flow [2023-01-28 03:18:06,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 10 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:06,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:06,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:06,121 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 03:18:06,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:06,317 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 03:18:06,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1333362537, now seen corresponding path program 3 times [2023-01-28 03:18:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488660673] [2023-01-28 03:18:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:06,429 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 03:18:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488660673] [2023-01-28 03:18:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488660673] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:18:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:18:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:18:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559840699] [2023-01-28 03:18:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:18:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:18:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:18:06,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:18:06,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 283 transitions, 4147 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:06,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:06,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:18:06,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:07,286 INFO L130 PetriNetUnfolder]: 3588/5629 cut-off events. [2023-01-28 03:18:07,286 INFO L131 PetriNetUnfolder]: For 166278/166278 co-relation queries the response was YES. [2023-01-28 03:18:07,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50745 conditions, 5629 events. 3588/5629 cut-off events. For 166278/166278 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32331 event pairs, 596 based on Foata normal form. 40/5657 useless extension candidates. Maximal degree in co-relation 45460. Up to 2187 conditions per place. [2023-01-28 03:18:07,335 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 250 selfloop transitions, 152 changer transitions 2/404 dead transitions. [2023-01-28 03:18:07,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 404 transitions, 6496 flow [2023-01-28 03:18:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 03:18:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 03:18:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 871 transitions. [2023-01-28 03:18:07,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47595628415300545 [2023-01-28 03:18:07,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 871 transitions. [2023-01-28 03:18:07,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 871 transitions. [2023-01-28 03:18:07,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:07,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 871 transitions. [2023-01-28 03:18:07,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:07,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:07,341 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:07,341 INFO L175 Difference]: Start difference. First operand has 141 places, 283 transitions, 4147 flow. Second operand 10 states and 871 transitions. [2023-01-28 03:18:07,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 404 transitions, 6496 flow [2023-01-28 03:18:07,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 404 transitions, 6275 flow, removed 103 selfloop flow, removed 1 redundant places. [2023-01-28 03:18:07,682 INFO L231 Difference]: Finished difference. Result has 152 places, 304 transitions, 4759 flow [2023-01-28 03:18:07,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4759, PETRI_PLACES=152, PETRI_TRANSITIONS=304} [2023-01-28 03:18:07,683 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2023-01-28 03:18:07,683 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 304 transitions, 4759 flow [2023-01-28 03:18:07,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:07,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:07,683 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] [2023-01-28 03:18:07,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 03:18:07,683 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 03:18:07,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -325682471, now seen corresponding path program 5 times [2023-01-28 03:18:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:07,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131096027] [2023-01-28 03:18:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131096027] [2023-01-28 03:18:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131096027] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233689113] [2023-01-28 03:18:07,790 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:18:07,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:07,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:07,791 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 03:18:07,797 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 03:18:07,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:18:07,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:18:07,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:18:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:07,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:08,001 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 03:18:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233689113] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:18:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2023-01-28 03:18:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926894285] [2023-01-28 03:18:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:08,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:18:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:18:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 03:18:08,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-01-28 03:18:08,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 304 transitions, 4759 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:08,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:08,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-01-28 03:18:08,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:08,786 INFO L130 PetriNetUnfolder]: 3830/6007 cut-off events. [2023-01-28 03:18:08,786 INFO L131 PetriNetUnfolder]: For 185544/185746 co-relation queries the response was YES. [2023-01-28 03:18:08,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54866 conditions, 6007 events. 3830/6007 cut-off events. For 185544/185746 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 35129 event pairs, 1113 based on Foata normal form. 46/6014 useless extension candidates. Maximal degree in co-relation 48898. Up to 2669 conditions per place. [2023-01-28 03:18:08,925 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 308 selfloop transitions, 65 changer transitions 0/379 dead transitions. [2023-01-28 03:18:08,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 379 transitions, 6459 flow [2023-01-28 03:18:08,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:18:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:18:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 546 transitions. [2023-01-28 03:18:08,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972677595628415 [2023-01-28 03:18:08,927 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 546 transitions. [2023-01-28 03:18:08,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 546 transitions. [2023-01-28 03:18:08,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:08,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 546 transitions. [2023-01-28 03:18:08,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:08,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:08,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:08,929 INFO L175 Difference]: Start difference. First operand has 152 places, 304 transitions, 4759 flow. Second operand 6 states and 546 transitions. [2023-01-28 03:18:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 379 transitions, 6459 flow [2023-01-28 03:18:09,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 379 transitions, 6012 flow, removed 69 selfloop flow, removed 5 redundant places. [2023-01-28 03:18:09,326 INFO L231 Difference]: Finished difference. Result has 154 places, 321 transitions, 4830 flow [2023-01-28 03:18:09,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4830, PETRI_PLACES=154, PETRI_TRANSITIONS=321} [2023-01-28 03:18:09,326 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2023-01-28 03:18:09,327 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 321 transitions, 4830 flow [2023-01-28 03:18:09,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:09,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:09,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:09,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:18:09,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:09,528 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 03:18:09,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2059082981, now seen corresponding path program 6 times [2023-01-28 03:18:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:09,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047875501] [2023-01-28 03:18:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:09,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047875501] [2023-01-28 03:18:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047875501] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763088796] [2023-01-28 03:18:09,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:18:09,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:09,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:09,651 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 03:18:09,653 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 03:18:09,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:18:09,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:18:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:18:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:09,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:09,858 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 03:18:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763088796] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:09,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:18:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-01-28 03:18:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369975216] [2023-01-28 03:18:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:09,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:18:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:18:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:18:09,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-01-28 03:18:09,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 321 transitions, 4830 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:09,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:09,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-01-28 03:18:09,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:10,801 INFO L130 PetriNetUnfolder]: 3810/5967 cut-off events. [2023-01-28 03:18:10,801 INFO L131 PetriNetUnfolder]: For 164914/165060 co-relation queries the response was YES. [2023-01-28 03:18:10,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53328 conditions, 5967 events. 3810/5967 cut-off events. For 164914/165060 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 34761 event pairs, 1123 based on Foata normal form. 51/5981 useless extension candidates. Maximal degree in co-relation 52343. Up to 2669 conditions per place. [2023-01-28 03:18:10,861 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 305 selfloop transitions, 68 changer transitions 0/379 dead transitions. [2023-01-28 03:18:10,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 379 transitions, 6250 flow [2023-01-28 03:18:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:18:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:18:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-01-28 03:18:10,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544626593806923 [2023-01-28 03:18:10,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-01-28 03:18:10,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-01-28 03:18:10,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:10,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-01-28 03:18:10,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:10,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:10,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:10,870 INFO L175 Difference]: Start difference. First operand has 154 places, 321 transitions, 4830 flow. Second operand 6 states and 544 transitions. [2023-01-28 03:18:10,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 379 transitions, 6250 flow [2023-01-28 03:18:11,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 379 transitions, 6139 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-28 03:18:11,191 INFO L231 Difference]: Finished difference. Result has 158 places, 325 transitions, 4960 flow [2023-01-28 03:18:11,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4725, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4960, PETRI_PLACES=158, PETRI_TRANSITIONS=325} [2023-01-28 03:18:11,192 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2023-01-28 03:18:11,192 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 325 transitions, 4960 flow [2023-01-28 03:18:11,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:11,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:11,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:11,200 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 03:18:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:11,397 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 03:18:11,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2045915515, now seen corresponding path program 7 times [2023-01-28 03:18:11,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:11,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235337872] [2023-01-28 03:18:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:11,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:11,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235337872] [2023-01-28 03:18:11,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235337872] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:11,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756383750] [2023-01-28 03:18:11,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:18:11,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:11,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:11,510 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 03:18:11,515 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 03:18:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:11,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 03:18:11,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:11,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:11,840 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 03:18:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756383750] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:11,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:18:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-01-28 03:18:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069750211] [2023-01-28 03:18:11,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:11,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:18:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:18:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:18:11,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-01-28 03:18:11,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 325 transitions, 4960 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:11,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:11,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-01-28 03:18:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:12,787 INFO L130 PetriNetUnfolder]: 3802/5949 cut-off events. [2023-01-28 03:18:12,787 INFO L131 PetriNetUnfolder]: For 164462/164608 co-relation queries the response was YES. [2023-01-28 03:18:12,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53269 conditions, 5949 events. 3802/5949 cut-off events. For 164462/164608 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34539 event pairs, 1095 based on Foata normal form. 41/5953 useless extension candidates. Maximal degree in co-relation 52415. Up to 2654 conditions per place. [2023-01-28 03:18:12,833 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 292 selfloop transitions, 76 changer transitions 0/374 dead transitions. [2023-01-28 03:18:12,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 374 transitions, 6263 flow [2023-01-28 03:18:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:18:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:18:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-01-28 03:18:12,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2023-01-28 03:18:12,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-01-28 03:18:12,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-01-28 03:18:12,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:12,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-01-28 03:18:12,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:12,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:12,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:12,846 INFO L175 Difference]: Start difference. First operand has 158 places, 325 transitions, 4960 flow. Second operand 6 states and 540 transitions. [2023-01-28 03:18:12,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 374 transitions, 6263 flow [2023-01-28 03:18:13,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 374 transitions, 6126 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 03:18:13,118 INFO L231 Difference]: Finished difference. Result has 163 places, 327 transitions, 5055 flow [2023-01-28 03:18:13,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5055, PETRI_PLACES=163, PETRI_TRANSITIONS=327} [2023-01-28 03:18:13,118 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2023-01-28 03:18:13,118 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 327 transitions, 5055 flow [2023-01-28 03:18:13,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:13,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:13,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:13,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 03:18:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:13,323 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 03:18:13,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1300590985, now seen corresponding path program 4 times [2023-01-28 03:18:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:13,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76049661] [2023-01-28 03:18:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:13,530 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 03:18:13,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:13,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76049661] [2023-01-28 03:18:13,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76049661] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:18:13,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:18:13,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:18:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607673910] [2023-01-28 03:18:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:18:13,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:18:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:18:13,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:18:13,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 327 transitions, 5055 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:13,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:13,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:18:13,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:14,618 INFO L130 PetriNetUnfolder]: 4320/6759 cut-off events. [2023-01-28 03:18:14,618 INFO L131 PetriNetUnfolder]: For 190795/190795 co-relation queries the response was YES. [2023-01-28 03:18:14,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61477 conditions, 6759 events. 4320/6759 cut-off events. For 190795/190795 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 39469 event pairs, 806 based on Foata normal form. 16/6759 useless extension candidates. Maximal degree in co-relation 60582. Up to 2744 conditions per place. [2023-01-28 03:18:14,681 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 302 selfloop transitions, 132 changer transitions 0/434 dead transitions. [2023-01-28 03:18:14,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 434 transitions, 7388 flow [2023-01-28 03:18:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:18:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:18:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-01-28 03:18:14,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722872755659641 [2023-01-28 03:18:14,683 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-01-28 03:18:14,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-01-28 03:18:14,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:14,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-01-28 03:18:14,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:14,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:14,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:14,685 INFO L175 Difference]: Start difference. First operand has 163 places, 327 transitions, 5055 flow. Second operand 7 states and 605 transitions. [2023-01-28 03:18:14,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 434 transitions, 7388 flow [2023-01-28 03:18:15,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 434 transitions, 7246 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 03:18:15,152 INFO L231 Difference]: Finished difference. Result has 171 places, 349 transitions, 5726 flow [2023-01-28 03:18:15,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4933, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5726, PETRI_PLACES=171, PETRI_TRANSITIONS=349} [2023-01-28 03:18:15,153 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2023-01-28 03:18:15,153 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 349 transitions, 5726 flow [2023-01-28 03:18:15,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:15,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:15,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:15,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 03:18:15,153 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 03:18:15,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:15,153 INFO L85 PathProgramCache]: Analyzing trace with hash -15966389, now seen corresponding path program 5 times [2023-01-28 03:18:15,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:15,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348786319] [2023-01-28 03:18:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:15,315 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 03:18:15,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348786319] [2023-01-28 03:18:15,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348786319] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:18:15,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:18:15,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:18:15,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941452438] [2023-01-28 03:18:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:15,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:18:15,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:18:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:18:15,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:18:15,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 349 transitions, 5726 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:15,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:15,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:18:15,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:16,432 INFO L130 PetriNetUnfolder]: 4331/6857 cut-off events. [2023-01-28 03:18:16,433 INFO L131 PetriNetUnfolder]: For 209287/209287 co-relation queries the response was YES. [2023-01-28 03:18:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63306 conditions, 6857 events. 4331/6857 cut-off events. For 209287/209287 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 41379 event pairs, 1060 based on Foata normal form. 54/6895 useless extension candidates. Maximal degree in co-relation 62423. Up to 3019 conditions per place. [2023-01-28 03:18:16,487 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 290 selfloop transitions, 123 changer transitions 10/423 dead transitions. [2023-01-28 03:18:16,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 423 transitions, 7569 flow [2023-01-28 03:18:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:18:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:18:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2023-01-28 03:18:16,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47306791569086654 [2023-01-28 03:18:16,488 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2023-01-28 03:18:16,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2023-01-28 03:18:16,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:16,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2023-01-28 03:18:16,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:16,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:16,491 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:16,491 INFO L175 Difference]: Start difference. First operand has 171 places, 349 transitions, 5726 flow. Second operand 7 states and 606 transitions. [2023-01-28 03:18:16,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 423 transitions, 7569 flow [2023-01-28 03:18:16,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 423 transitions, 7403 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 03:18:16,836 INFO L231 Difference]: Finished difference. Result has 180 places, 352 transitions, 6048 flow [2023-01-28 03:18:16,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=5551, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6048, PETRI_PLACES=180, PETRI_TRANSITIONS=352} [2023-01-28 03:18:16,836 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2023-01-28 03:18:16,837 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 352 transitions, 6048 flow [2023-01-28 03:18:16,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:16,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:16,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 03:18:16,837 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 03:18:16,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash -890730435, now seen corresponding path program 6 times [2023-01-28 03:18:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103962187] [2023-01-28 03:18:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:16,940 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 03:18:16,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:16,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103962187] [2023-01-28 03:18:16,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103962187] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:18:16,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:18:16,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:18:16,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518449670] [2023-01-28 03:18:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:16,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:18:16,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:18:16,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:18:16,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:18:16,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 352 transitions, 6048 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:16,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:16,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:18:16,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:18,211 INFO L130 PetriNetUnfolder]: 4474/7124 cut-off events. [2023-01-28 03:18:18,211 INFO L131 PetriNetUnfolder]: For 223382/223382 co-relation queries the response was YES. [2023-01-28 03:18:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67950 conditions, 7124 events. 4474/7124 cut-off events. For 223382/223382 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43788 event pairs, 1287 based on Foata normal form. 42/7150 useless extension candidates. Maximal degree in co-relation 67788. Up to 3825 conditions per place. [2023-01-28 03:18:18,272 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 370 selfloop transitions, 80 changer transitions 10/460 dead transitions. [2023-01-28 03:18:18,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 460 transitions, 8504 flow [2023-01-28 03:18:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:18:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:18:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-01-28 03:18:18,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722872755659641 [2023-01-28 03:18:18,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-01-28 03:18:18,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-01-28 03:18:18,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:18,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-01-28 03:18:18,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:18,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:18,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:18,276 INFO L175 Difference]: Start difference. First operand has 180 places, 352 transitions, 6048 flow. Second operand 7 states and 605 transitions. [2023-01-28 03:18:18,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 460 transitions, 8504 flow [2023-01-28 03:18:18,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 460 transitions, 8368 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 03:18:18,659 INFO L231 Difference]: Finished difference. Result has 186 places, 361 transitions, 6335 flow [2023-01-28 03:18:18,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6335, PETRI_PLACES=186, PETRI_TRANSITIONS=361} [2023-01-28 03:18:18,660 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2023-01-28 03:18:18,660 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 361 transitions, 6335 flow [2023-01-28 03:18:18,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:18,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:18,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:18,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 03:18:18,661 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 03:18:18,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash 252443957, now seen corresponding path program 7 times [2023-01-28 03:18:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:18,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490356328] [2023-01-28 03:18:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:18,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:18,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490356328] [2023-01-28 03:18:18,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490356328] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:18,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46202196] [2023-01-28 03:18:18,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:18:18,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:18,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:18,769 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 03:18:18,771 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 03:18:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:18,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 03:18:18,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:18,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46202196] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:18:18,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:18:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-01-28 03:18:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087053760] [2023-01-28 03:18:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:18:18,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:18:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:18:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:18:18,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:18:18,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 361 transitions, 6335 flow. Second operand has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:18,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:18,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:18:18,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:20,204 INFO L130 PetriNetUnfolder]: 4417/7001 cut-off events. [2023-01-28 03:18:20,204 INFO L131 PetriNetUnfolder]: For 221079/221079 co-relation queries the response was YES. [2023-01-28 03:18:20,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67209 conditions, 7001 events. 4417/7001 cut-off events. For 221079/221079 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 42548 event pairs, 1293 based on Foata normal form. 24/7009 useless extension candidates. Maximal degree in co-relation 66810. Up to 3825 conditions per place. [2023-01-28 03:18:20,275 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 368 selfloop transitions, 86 changer transitions 2/456 dead transitions. [2023-01-28 03:18:20,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 456 transitions, 8578 flow [2023-01-28 03:18:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:18:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:18:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-01-28 03:18:20,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707259953161593 [2023-01-28 03:18:20,276 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-01-28 03:18:20,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-01-28 03:18:20,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:20,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-01-28 03:18:20,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:20,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:20,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:20,279 INFO L175 Difference]: Start difference. First operand has 186 places, 361 transitions, 6335 flow. Second operand 7 states and 603 transitions. [2023-01-28 03:18:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 456 transitions, 8578 flow [2023-01-28 03:18:20,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 456 transitions, 8403 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-01-28 03:18:20,765 INFO L231 Difference]: Finished difference. Result has 190 places, 367 transitions, 6522 flow [2023-01-28 03:18:20,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=6175, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6522, PETRI_PLACES=190, PETRI_TRANSITIONS=367} [2023-01-28 03:18:20,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2023-01-28 03:18:20,766 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 367 transitions, 6522 flow [2023-01-28 03:18:20,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.45454545454545) internal successors, (852), 11 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:20,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:20,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:20,775 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 03:18:20,970 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,SelfDestructingSolverStorable14 [2023-01-28 03:18:20,971 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 03:18:20,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash -730640007, now seen corresponding path program 8 times [2023-01-28 03:18:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689696231] [2023-01-28 03:18:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689696231] [2023-01-28 03:18:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689696231] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767926237] [2023-01-28 03:18:21,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:18:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:21,070 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 03:18:21,072 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 03:18:21,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:18:21,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:18:21,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 03:18:21,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:21,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:18:21,361 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 03:18:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767926237] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:21,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:18:21,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-01-28 03:18:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057282218] [2023-01-28 03:18:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:21,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 03:18:21,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:21,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 03:18:21,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-01-28 03:18:21,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-01-28 03:18:21,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 367 transitions, 6522 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:21,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:21,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-01-28 03:18:21,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:22,593 INFO L130 PetriNetUnfolder]: 4685/7519 cut-off events. [2023-01-28 03:18:22,593 INFO L131 PetriNetUnfolder]: For 258151/258726 co-relation queries the response was YES. [2023-01-28 03:18:22,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74127 conditions, 7519 events. 4685/7519 cut-off events. For 258151/258726 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 47769 event pairs, 1091 based on Foata normal form. 263/7639 useless extension candidates. Maximal degree in co-relation 73229. Up to 3401 conditions per place. [2023-01-28 03:18:22,663 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 250 selfloop transitions, 170 changer transitions 4/458 dead transitions. [2023-01-28 03:18:22,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 458 transitions, 8967 flow [2023-01-28 03:18:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 03:18:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 03:18:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 539 transitions. [2023-01-28 03:18:22,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49089253187613846 [2023-01-28 03:18:22,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 539 transitions. [2023-01-28 03:18:22,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 539 transitions. [2023-01-28 03:18:22,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:22,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 539 transitions. [2023-01-28 03:18:22,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:22,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:22,666 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:22,666 INFO L175 Difference]: Start difference. First operand has 190 places, 367 transitions, 6522 flow. Second operand 6 states and 539 transitions. [2023-01-28 03:18:22,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 458 transitions, 8967 flow [2023-01-28 03:18:23,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 458 transitions, 8754 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-28 03:18:23,358 INFO L231 Difference]: Finished difference. Result has 196 places, 397 transitions, 7630 flow [2023-01-28 03:18:23,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7630, PETRI_PLACES=196, PETRI_TRANSITIONS=397} [2023-01-28 03:18:23,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2023-01-28 03:18:23,359 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 397 transitions, 7630 flow [2023-01-28 03:18:23,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:23,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:23,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:23,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 03:18:23,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 03:18:23,564 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 03:18:23,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1784833011, now seen corresponding path program 1 times [2023-01-28 03:18:23,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707056988] [2023-01-28 03:18:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:23,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:23,659 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 03:18:23,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707056988] [2023-01-28 03:18:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707056988] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:18:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:18:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 03:18:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179901919] [2023-01-28 03:18:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:18:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 03:18:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:18:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 03:18:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 03:18:23,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-01-28 03:18:23,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 397 transitions, 7630 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:23,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:18:23,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-01-28 03:18:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:18:25,138 INFO L130 PetriNetUnfolder]: 5105/8207 cut-off events. [2023-01-28 03:18:25,138 INFO L131 PetriNetUnfolder]: For 283790/283790 co-relation queries the response was YES. [2023-01-28 03:18:25,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81189 conditions, 8207 events. 5105/8207 cut-off events. For 283790/283790 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 52388 event pairs, 1581 based on Foata normal form. 28/8219 useless extension candidates. Maximal degree in co-relation 80275. Up to 3893 conditions per place. [2023-01-28 03:18:25,212 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 362 selfloop transitions, 136 changer transitions 8/506 dead transitions. [2023-01-28 03:18:25,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 506 transitions, 10286 flow [2023-01-28 03:18:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:18:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:18:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2023-01-28 03:18:25,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47306791569086654 [2023-01-28 03:18:25,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2023-01-28 03:18:25,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2023-01-28 03:18:25,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:18:25,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2023-01-28 03:18:25,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:25,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:25,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 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 03:18:25,218 INFO L175 Difference]: Start difference. First operand has 196 places, 397 transitions, 7630 flow. Second operand 7 states and 606 transitions. [2023-01-28 03:18:25,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 506 transitions, 10286 flow [2023-01-28 03:18:25,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 506 transitions, 10176 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 03:18:25,882 INFO L231 Difference]: Finished difference. Result has 206 places, 428 transitions, 8717 flow [2023-01-28 03:18:25,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7541, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8717, PETRI_PLACES=206, PETRI_TRANSITIONS=428} [2023-01-28 03:18:25,883 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2023-01-28 03:18:25,883 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 428 transitions, 8717 flow [2023-01-28 03:18:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:18:25,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:18:25,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:18:25,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 03:18:25,884 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 03:18:25,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:18:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1949737937, now seen corresponding path program 9 times [2023-01-28 03:18:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:18:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006640283] [2023-01-28 03:18:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:18:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:18:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:18:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:18:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006640283] [2023-01-28 03:18:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006640283] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:18:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764956020] [2023-01-28 03:18:25,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:18:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:18:26,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:18:26,011 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 03:18:26,040 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 03:18:26,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:18:26,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:18:26,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:18:26,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:18:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:18:26,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:20:39,731 WARN L222 SmtUtils]: Spent 2.20m on a formula simplification. DAG size of input: 4214 DAG size of output: 3668 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 03:28:27,167 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 03:28:27,209 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:28:28,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-01-28 03:28:28,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown