/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/pthread/queue_ok_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:40:39,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:40:39,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:40:39,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:40:39,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:40:39,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:40:39,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:40:39,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:40:39,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:40:39,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:40:39,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:40:39,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:40:39,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:40:39,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:40:39,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:40:39,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:40:39,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:40:39,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:40:39,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:40:39,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:40:39,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:40:39,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:40:39,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:40:39,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:40:39,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:40:39,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:40:39,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:40:39,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:40:39,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:40:39,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-27 23:40:39,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:40:39,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:40:39,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:40:39,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:40:39,267 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:40:39,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:40:39,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:40:39,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:40:39,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:40:39,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:40:39,268 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:40:39,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:40:39,268 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:40:39,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:40:39,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:40:39,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:40:39,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:40:39,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:40:39,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:40:39,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:40:39,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:40:39,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:40:39,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:40:39,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:40:39,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:40:39,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:40:39,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:40:39,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:40:39,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:40:39,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:40:39,462 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:40:39,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-01-27 23:40:40,354 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:40:40,571 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:40:40,572 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-01-27 23:40:40,583 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14d734c7/d5cf05a1a3684918806d4f21b24a3b10/FLAGf34c964c1 [2023-01-27 23:40:40,592 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14d734c7/d5cf05a1a3684918806d4f21b24a3b10 [2023-01-27 23:40:40,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:40:40,594 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:40:40,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:40:40,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:40:40,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:40:40,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:40:40" (1/1) ... [2023-01-27 23:40:40,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432b029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:40, skipping insertion in model container [2023-01-27 23:40:40,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:40:40" (1/1) ... [2023-01-27 23:40:40,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:40:40,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:40:40,911 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2023-01-27 23:40:40,917 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2023-01-27 23:40:40,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:40:40,931 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:40:40,963 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2023-01-27 23:40:40,965 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2023-01-27 23:40:40,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:40:41,002 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:40:41,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41 WrapperNode [2023-01-27 23:40:41,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:40:41,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:40:41,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:40:41,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:40:41,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,051 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2023-01-27 23:40:41,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:40:41,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:40:41,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:40:41,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:40:41,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,084 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:40:41,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:40:41,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:40:41,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:40:41,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (1/1) ... [2023-01-27 23:40:41,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:40:41,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:40:41,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:40:41,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:40:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:40:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:40:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:40:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:40:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:40:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:40:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:40:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:40:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:40:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:40:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:40:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:40:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:40:41,152 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:40:41,241 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:40:41,242 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:40:41,522 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:40:41,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:40:41,529 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:40:41,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:40:41 BoogieIcfgContainer [2023-01-27 23:40:41,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:40:41,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:40:41,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:40:41,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:40:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:40:40" (1/3) ... [2023-01-27 23:40:41,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d843ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:40:41, skipping insertion in model container [2023-01-27 23:40:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:40:41" (2/3) ... [2023-01-27 23:40:41,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d843ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:40:41, skipping insertion in model container [2023-01-27 23:40:41,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:40:41" (3/3) ... [2023-01-27 23:40:41,535 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-01-27 23:40:41,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:40:41,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:40:41,551 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:40:41,672 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:40:41,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 216 transitions, 448 flow [2023-01-27 23:40:41,766 INFO L130 PetriNetUnfolder]: 13/214 cut-off events. [2023-01-27 23:40:41,766 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:40:41,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 13/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-27 23:40:41,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 216 transitions, 448 flow [2023-01-27 23:40:41,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 205 transitions, 419 flow [2023-01-27 23:40:41,790 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:40:41,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-27 23:40:41,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-27 23:40:41,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 419 flow [2023-01-27 23:40:41,842 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-01-27 23:40:41,842 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:40:41,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 13/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-27 23:40:41,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 9984 [2023-01-27 23:40:47,660 INFO L134 LiptonReduction]: Checked pairs total: 19772 [2023-01-27 23:40:47,660 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-01-27 23:40:47,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:40:47,674 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;@327cc296, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:40:47,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 23:40:47,675 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 23:40:47,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:40:47,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:47,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 23:40:47,676 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 2 more)] === [2023-01-27 23:40:47,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 839, now seen corresponding path program 1 times [2023-01-27 23:40:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910914872] [2023-01-27 23:40:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910914872] [2023-01-27 23:40:47,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910914872] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:47,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 23:40:47,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412384481] [2023-01-27 23:40:47,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:47,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 23:40:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 23:40:47,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 23:40:47,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 402 [2023-01-27 23:40:47,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:47,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:47,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 402 [2023-01-27 23:40:47,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:47,907 INFO L130 PetriNetUnfolder]: 829/1341 cut-off events. [2023-01-27 23:40:47,907 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-01-27 23:40:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1341 events. 829/1341 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5736 event pairs, 621 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2519. Up to 1297 conditions per place. [2023-01-27 23:40:47,915 INFO L137 encePairwiseOnDemand]: 401/402 looper letters, 38 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-01-27 23:40:47,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 179 flow [2023-01-27 23:40:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 23:40:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 23:40:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-01-27 23:40:47,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2023-01-27 23:40:47,931 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-01-27 23:40:47,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-01-27 23:40:47,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:47,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-01-27 23:40:47,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:47,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:47,942 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:47,943 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 103 flow. Second operand 2 states and 450 transitions. [2023-01-27 23:40:47,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 179 flow [2023-01-27 23:40:47,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:40:47,946 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2023-01-27 23:40:47,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-01-27 23:40:47,949 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-27 23:40:47,950 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2023-01-27 23:40:47,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:47,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:47,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:40:47,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:47,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1319934340, now seen corresponding path program 1 times [2023-01-27 23:40:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678895084] [2023-01-27 23:40:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678895084] [2023-01-27 23:40:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678895084] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:48,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:48,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:40:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096404778] [2023-01-27 23:40:48,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:48,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:40:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:40:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:40:48,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 402 [2023-01-27 23:40:48,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:48,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 402 [2023-01-27 23:40:48,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:48,217 INFO L130 PetriNetUnfolder]: 248/490 cut-off events. [2023-01-27 23:40:48,217 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 23:40:48,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 490 events. 248/490 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2048 event pairs, 164 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 980. Up to 253 conditions per place. [2023-01-27 23:40:48,218 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 40 selfloop transitions, 2 changer transitions 8/53 dead transitions. [2023-01-27 23:40:48,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 209 flow [2023-01-27 23:40:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:40:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:40:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-27 23:40:48,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-27 23:40:48,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-27 23:40:48,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-27 23:40:48,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:48,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-27 23:40:48,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,224 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-27 23:40:48,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 209 flow [2023-01-27 23:40:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:40:48,226 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 94 flow [2023-01-27 23:40:48,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-01-27 23:40:48,226 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-01-27 23:40:48,227 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 94 flow [2023-01-27 23:40:48,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:48,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:40:48,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:48,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -312369892, now seen corresponding path program 1 times [2023-01-27 23:40:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362857836] [2023-01-27 23:40:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:48,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:48,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362857836] [2023-01-27 23:40:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362857836] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:48,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:40:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067581928] [2023-01-27 23:40:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:40:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:40:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:40:48,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:40:48,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:48,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:40:48,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:48,370 INFO L130 PetriNetUnfolder]: 245/490 cut-off events. [2023-01-27 23:40:48,371 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-27 23:40:48,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 490 events. 245/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1755 event pairs, 155 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1020. Up to 357 conditions per place. [2023-01-27 23:40:48,374 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 48 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-27 23:40:48,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 226 flow [2023-01-27 23:40:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:40:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:40:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-27 23:40:48,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-27 23:40:48,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-27 23:40:48,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-27 23:40:48,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:48,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-27 23:40:48,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,380 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-27 23:40:48,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 226 flow [2023-01-27 23:40:48,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:40:48,382 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 109 flow [2023-01-27 23:40:48,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-01-27 23:40:48,384 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-27 23:40:48,384 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 109 flow [2023-01-27 23:40:48,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:48,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:48,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:40:48,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:48,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash -824947493, now seen corresponding path program 1 times [2023-01-27 23:40:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438396370] [2023-01-27 23:40:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:48,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438396370] [2023-01-27 23:40:48,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438396370] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:40:48,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:40:48,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:40:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429184719] [2023-01-27 23:40:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:40:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:40:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:40:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:40:48,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 402 [2023-01-27 23:40:48,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 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) [2023-01-27 23:40:48,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:48,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 402 [2023-01-27 23:40:48,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:48,601 INFO L130 PetriNetUnfolder]: 187/394 cut-off events. [2023-01-27 23:40:48,601 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-27 23:40:48,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 394 events. 187/394 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 12 based on Foata normal form. 42/410 useless extension candidates. Maximal degree in co-relation 865. Up to 341 conditions per place. [2023-01-27 23:40:48,603 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-01-27 23:40:48,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 216 flow [2023-01-27 23:40:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:40:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:40:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-01-27 23:40:48,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207296849087893 [2023-01-27 23:40:48,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-01-27 23:40:48,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-01-27 23:40:48,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:48,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-01-27 23:40:48,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,614 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 109 flow. Second operand 3 states and 628 transitions. [2023-01-27 23:40:48,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 216 flow [2023-01-27 23:40:48,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:40:48,616 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 112 flow [2023-01-27 23:40:48,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-01-27 23:40:48,617 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-01-27 23:40:48,617 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 112 flow [2023-01-27 23:40:48,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 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) [2023-01-27 23:40:48,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:48,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:48,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:40:48,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:48,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash 818194887, now seen corresponding path program 1 times [2023-01-27 23:40:48,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:48,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602868681] [2023-01-27 23:40:48,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:48,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602868681] [2023-01-27 23:40:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602868681] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:40:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761169675] [2023-01-27 23:40:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:48,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:48,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:40:48,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:40:48,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:40:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:48,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 23:40:48,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:40:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:48,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:40:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761169675] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:40:48,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:40:48,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-27 23:40:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138311785] [2023-01-27 23:40:48,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:40:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:40:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:40:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:40:48,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:40:48,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:48,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:40:48,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:48,983 INFO L130 PetriNetUnfolder]: 246/531 cut-off events. [2023-01-27 23:40:48,983 INFO L131 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2023-01-27 23:40:48,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 531 events. 246/531 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1513 event pairs, 100 based on Foata normal form. 12/507 useless extension candidates. Maximal degree in co-relation 1194. Up to 238 conditions per place. [2023-01-27 23:40:48,985 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 70 selfloop transitions, 10 changer transitions 1/84 dead transitions. [2023-01-27 23:40:48,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 370 flow [2023-01-27 23:40:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:40:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:40:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1271 transitions. [2023-01-27 23:40:48,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269485903814262 [2023-01-27 23:40:48,988 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1271 transitions. [2023-01-27 23:40:48,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1271 transitions. [2023-01-27 23:40:48,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:48,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1271 transitions. [2023-01-27 23:40:48,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.83333333333334) internal successors, (1271), 6 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,994 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 112 flow. Second operand 6 states and 1271 transitions. [2023-01-27 23:40:48,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 370 flow [2023-01-27 23:40:48,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:40:48,996 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 170 flow [2023-01-27 23:40:48,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-01-27 23:40:48,998 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-01-27 23:40:48,998 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 170 flow [2023-01-27 23:40:48,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:48,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:48,999 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:49,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 23:40:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:49,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:49,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1030938622, now seen corresponding path program 2 times [2023-01-27 23:40:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640637471] [2023-01-27 23:40:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640637471] [2023-01-27 23:40:49,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640637471] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:40:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783413527] [2023-01-27 23:40:49,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:40:49,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:49,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:40:49,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:40:49,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:40:49,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:40:49,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:40:49,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 23:40:49,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:40:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:49,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:40:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:49,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783413527] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:40:49,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:40:49,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-27 23:40:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482689557] [2023-01-27 23:40:49,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:40:49,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:40:49,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:40:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:40:49,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:40:49,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:49,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:49,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:40:49,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:49,846 INFO L130 PetriNetUnfolder]: 423/934 cut-off events. [2023-01-27 23:40:49,846 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2023-01-27 23:40:49,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 934 events. 423/934 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2534 event pairs, 91 based on Foata normal form. 24/900 useless extension candidates. Maximal degree in co-relation 2357. Up to 217 conditions per place. [2023-01-27 23:40:49,849 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 136 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-01-27 23:40:49,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 161 transitions, 836 flow [2023-01-27 23:40:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:40:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:40:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2540 transitions. [2023-01-27 23:40:49,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265339966832504 [2023-01-27 23:40:49,854 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2540 transitions. [2023-01-27 23:40:49,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2540 transitions. [2023-01-27 23:40:49,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:49,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2540 transitions. [2023-01-27 23:40:49,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.66666666666666) internal successors, (2540), 12 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:49,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:49,882 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:49,882 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 170 flow. Second operand 12 states and 2540 transitions. [2023-01-27 23:40:49,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 161 transitions, 836 flow [2023-01-27 23:40:49,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 161 transitions, 797 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-27 23:40:49,886 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 320 flow [2023-01-27 23:40:49,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-01-27 23:40:49,886 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-01-27 23:40:49,886 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 320 flow [2023-01-27 23:40:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:49,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:49,887 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:49,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:40:50,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 23:40:50,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:50,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -122187422, now seen corresponding path program 3 times [2023-01-27 23:40:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:50,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697415653] [2023-01-27 23:40:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697415653] [2023-01-27 23:40:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697415653] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:40:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237114407] [2023-01-27 23:40:50,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:40:50,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:40:50,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:40:50,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:40:50,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 23:40:50,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:40:50,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-27 23:40:50,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:40:51,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:40:51,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:40:51,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:40:51,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:40:51,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-01-27 23:40:51,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:40:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-01-27 23:40:51,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:40:51,310 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38| Int) (v_ArrVal_576 (Array Int Int)) (v_ArrVal_578 Int)) (let ((.cse0 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_576) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38|) |c_~#queue~0.offset|) v_ArrVal_578) .cse1) 800) (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38|)))) is different from false [2023-01-27 23:40:51,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:40:51,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 42 [2023-01-27 23:40:51,333 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:40:51,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 77 [2023-01-27 23:40:51,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-01-27 23:40:51,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-01-27 23:40:51,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:40:51,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-01-27 23:40:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 68 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 8 not checked. [2023-01-27 23:40:51,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237114407] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:40:51,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:40:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-01-27 23:40:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769589087] [2023-01-27 23:40:51,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:40:51,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 23:40:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 23:40:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=434, Unknown=1, NotChecked=44, Total=600 [2023-01-27 23:40:51,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 402 [2023-01-27 23:40:51,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 320 flow. Second operand has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:51,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:51,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 402 [2023-01-27 23:40:51,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:52,948 INFO L130 PetriNetUnfolder]: 821/1800 cut-off events. [2023-01-27 23:40:52,948 INFO L131 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2023-01-27 23:40:52,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 1800 events. 821/1800 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6406 event pairs, 57 based on Foata normal form. 8/1737 useless extension candidates. Maximal degree in co-relation 4844. Up to 285 conditions per place. [2023-01-27 23:40:52,955 INFO L137 encePairwiseOnDemand]: 390/402 looper letters, 267 selfloop transitions, 110 changer transitions 1/380 dead transitions. [2023-01-27 23:40:52,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 380 transitions, 2040 flow [2023-01-27 23:40:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-27 23:40:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-27 23:40:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6885 transitions. [2023-01-27 23:40:52,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982992016660882 [2023-01-27 23:40:52,966 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6885 transitions. [2023-01-27 23:40:52,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6885 transitions. [2023-01-27 23:40:52,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:52,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6885 transitions. [2023-01-27 23:40:52,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 160.11627906976744) internal successors, (6885), 43 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:52,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:52,993 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:52,993 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 320 flow. Second operand 43 states and 6885 transitions. [2023-01-27 23:40:52,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 380 transitions, 2040 flow [2023-01-27 23:40:52,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 380 transitions, 2025 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:40:53,001 INFO L231 Difference]: Finished difference. Result has 134 places, 163 transitions, 1172 flow [2023-01-27 23:40:53,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1172, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2023-01-27 23:40:53,002 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-01-27 23:40:53,002 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1172 flow [2023-01-27 23:40:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:53,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:53,003 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:53,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:40:53,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:53,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:53,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash -161773555, now seen corresponding path program 1 times [2023-01-27 23:40:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:53,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86761000] [2023-01-27 23:40:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:53,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:53,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:53,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86761000] [2023-01-27 23:40:53,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86761000] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:40:53,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498684813] [2023-01-27 23:40:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:53,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:40:53,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:40:53,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:40:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:53,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 23:40:53,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:40:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:53,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:40:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498684813] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:40:54,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:40:54,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-01-27 23:40:54,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885950595] [2023-01-27 23:40:54,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:40:54,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 23:40:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 23:40:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-01-27 23:40:54,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:40:54,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1172 flow. Second operand has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:54,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:54,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:40:54,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:54,788 INFO L130 PetriNetUnfolder]: 1371/3210 cut-off events. [2023-01-27 23:40:54,788 INFO L131 PetriNetUnfolder]: For 28289/28289 co-relation queries the response was YES. [2023-01-27 23:40:54,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14004 conditions, 3210 events. 1371/3210 cut-off events. For 28289/28289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11580 event pairs, 136 based on Foata normal form. 104/3290 useless extension candidates. Maximal degree in co-relation 13961. Up to 452 conditions per place. [2023-01-27 23:40:54,805 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2023-01-27 23:40:54,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 491 transitions, 5503 flow [2023-01-27 23:40:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 23:40:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 23:40:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5501 transitions. [2023-01-27 23:40:54,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263107539226942 [2023-01-27 23:40:54,813 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5501 transitions. [2023-01-27 23:40:54,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5501 transitions. [2023-01-27 23:40:54,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:54,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5501 transitions. [2023-01-27 23:40:54,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 211.57692307692307) internal successors, (5501), 26 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:54,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:54,830 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:54,831 INFO L175 Difference]: Start difference. First operand has 134 places, 163 transitions, 1172 flow. Second operand 26 states and 5501 transitions. [2023-01-27 23:40:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 491 transitions, 5503 flow [2023-01-27 23:40:54,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 491 transitions, 5316 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-01-27 23:40:54,863 INFO L231 Difference]: Finished difference. Result has 162 places, 201 transitions, 1742 flow [2023-01-27 23:40:54,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1742, PETRI_PLACES=162, PETRI_TRANSITIONS=201} [2023-01-27 23:40:54,864 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 115 predicate places. [2023-01-27 23:40:54,864 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 201 transitions, 1742 flow [2023-01-27 23:40:54,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:54,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:54,865 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:54,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 23:40:55,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:55,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:55,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash -346057744, now seen corresponding path program 2 times [2023-01-27 23:40:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618557619] [2023-01-27 23:40:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:55,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:40:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:56,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:40:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618557619] [2023-01-27 23:40:56,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618557619] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:40:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209398764] [2023-01-27 23:40:56,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:40:56,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:56,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:40:56,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:40:56,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:40:56,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:40:56,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:40:56,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 23:40:56,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:40:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:56,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:40:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:40:57,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209398764] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:40:57,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:40:57,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2023-01-27 23:40:57,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017325212] [2023-01-27 23:40:57,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:40:57,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-01-27 23:40:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:40:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-01-27 23:40:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-01-27 23:40:57,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:40:57,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 201 transitions, 1742 flow. Second operand has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:57,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:40:57,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:40:57,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:40:59,228 INFO L130 PetriNetUnfolder]: 2697/6382 cut-off events. [2023-01-27 23:40:59,229 INFO L131 PetriNetUnfolder]: For 100006/100006 co-relation queries the response was YES. [2023-01-27 23:40:59,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29607 conditions, 6382 events. 2697/6382 cut-off events. For 100006/100006 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23247 event pairs, 136 based on Foata normal form. 208/6566 useless extension candidates. Maximal degree in co-relation 29551. Up to 1128 conditions per place. [2023-01-27 23:40:59,271 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 829 selfloop transitions, 153 changer transitions 0/985 dead transitions. [2023-01-27 23:40:59,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 985 transitions, 11795 flow [2023-01-27 23:40:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-01-27 23:40:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-01-27 23:40:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11000 transitions. [2023-01-27 23:40:59,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262150784538844 [2023-01-27 23:40:59,284 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11000 transitions. [2023-01-27 23:40:59,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11000 transitions. [2023-01-27 23:40:59,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:40:59,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11000 transitions. [2023-01-27 23:40:59,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 211.53846153846155) internal successors, (11000), 52 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:59,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:59,390 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:59,390 INFO L175 Difference]: Start difference. First operand has 162 places, 201 transitions, 1742 flow. Second operand 52 states and 11000 transitions. [2023-01-27 23:40:59,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 985 transitions, 11795 flow [2023-01-27 23:40:59,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 985 transitions, 11732 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-27 23:40:59,501 INFO L231 Difference]: Finished difference. Result has 229 places, 281 transitions, 3410 flow [2023-01-27 23:40:59,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3410, PETRI_PLACES=229, PETRI_TRANSITIONS=281} [2023-01-27 23:40:59,502 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 182 predicate places. [2023-01-27 23:40:59,502 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 281 transitions, 3410 flow [2023-01-27 23:40:59,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:40:59,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:40:59,504 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:40:59,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:40:59,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:40:59,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:40:59,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:40:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash 890330880, now seen corresponding path program 3 times [2023-01-27 23:40:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:40:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508526295] [2023-01-27 23:40:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:40:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:40:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:02,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:02,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508526295] [2023-01-27 23:41:02,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508526295] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:02,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070221942] [2023-01-27 23:41:02,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:41:02,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:02,315 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:41:02,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:41:03,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 23:41:03,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:41:03,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-27 23:41:03,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:41:04,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-27 23:41:04,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:41:04,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-27 23:41:04,617 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:41:04,624 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-27 23:41:04,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:41:04,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:41:04,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-27 23:41:04,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:41:04,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-27 23:41:04,875 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:41:04,882 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-01-27 23:41:04,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2023-01-27 23:41:04,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:41:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2023-01-27 23:41:04,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:41:05,129 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (or (< (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1) v_ArrVal_2171) (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 800)))) is different from false [2023-01-27 23:41:05,141 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (not (= (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse0 .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ |c_~#queue~0.offset| (* (select .cse2 .cse3) 4)) v_ArrVal_2175)) .cse3)) 800))))) is different from false [2023-01-27 23:41:05,156 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1)) 800)) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2171)))) is different from false [2023-01-27 23:41:05,173 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (not (= 800 (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ (* (select .cse2 .cse3) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse3))))))) is different from false [2023-01-27 23:41:09,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:41:09,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 129 [2023-01-27 23:41:09,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:41:09,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 212 [2023-01-27 23:41:09,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-01-27 23:41:09,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-01-27 23:41:09,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-01-27 23:41:09,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:41:09,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 71 [2023-01-27 23:41:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 356 proven. 241 refuted. 48 times theorem prover too weak. 6786 trivial. 244 not checked. [2023-01-27 23:41:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070221942] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:41:12,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:41:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 13] total 75 [2023-01-27 23:41:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339997407] [2023-01-27 23:41:12,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:41:12,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-01-27 23:41:12,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-01-27 23:41:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1497, Invalid=3475, Unknown=14, NotChecked=564, Total=5550 [2023-01-27 23:41:12,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 402 [2023-01-27 23:41:12,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 281 transitions, 3410 flow. Second operand has 75 states, 75 states have (on average 155.26666666666668) internal successors, (11645), 75 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:12,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:12,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 402 [2023-01-27 23:41:12,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:42:26,571 INFO L130 PetriNetUnfolder]: 5789/13244 cut-off events. [2023-01-27 23:42:26,571 INFO L131 PetriNetUnfolder]: For 195510/195510 co-relation queries the response was YES. [2023-01-27 23:42:26,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67354 conditions, 13244 events. 5789/13244 cut-off events. For 195510/195510 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 61762 event pairs, 213 based on Foata normal form. 408/13616 useless extension candidates. Maximal degree in co-relation 67271. Up to 2163 conditions per place. [2023-01-27 23:42:26,665 INFO L137 encePairwiseOnDemand]: 386/402 looper letters, 1958 selfloop transitions, 1567 changer transitions 1/3528 dead transitions. [2023-01-27 23:42:26,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 3528 transitions, 35161 flow [2023-01-27 23:42:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 521 states. [2023-01-27 23:42:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2023-01-27 23:42:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 81260 transitions. [2023-01-27 23:42:26,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879833080279982 [2023-01-27 23:42:26,716 INFO L72 ComplementDD]: Start complementDD. Operand 521 states and 81260 transitions. [2023-01-27 23:42:26,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 521 states and 81260 transitions. [2023-01-27 23:42:26,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:42:26,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 521 states and 81260 transitions. [2023-01-27 23:42:26,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 522 states, 521 states have (on average 155.96928982725527) internal successors, (81260), 521 states have internal predecessors, (81260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:42:26,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 522 states, 522 states have (on average 402.0) internal successors, (209844), 522 states have internal predecessors, (209844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:42:26,964 INFO L81 ComplementDD]: Finished complementDD. Result has 522 states, 522 states have (on average 402.0) internal successors, (209844), 522 states have internal predecessors, (209844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:42:26,964 INFO L175 Difference]: Start difference. First operand has 229 places, 281 transitions, 3410 flow. Second operand 521 states and 81260 transitions. [2023-01-27 23:42:26,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 3528 transitions, 35161 flow [2023-01-27 23:42:27,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 3528 transitions, 34942 flow, removed 0 selfloop flow, removed 23 redundant places. [2023-01-27 23:42:27,468 INFO L231 Difference]: Finished difference. Result has 982 places, 1808 transitions, 28624 flow [2023-01-27 23:42:27,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=521, PETRI_FLOW=28624, PETRI_PLACES=982, PETRI_TRANSITIONS=1808} [2023-01-27 23:42:27,469 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 935 predicate places. [2023-01-27 23:42:27,469 INFO L495 AbstractCegarLoop]: Abstraction has has 982 places, 1808 transitions, 28624 flow [2023-01-27 23:42:27,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 155.26666666666668) internal successors, (11645), 75 states have internal predecessors, (11645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:42:27,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:42:27,471 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 38, 38, 38, 38, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:42:27,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 23:42:27,672 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 [2023-01-27 23:42:27,673 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:42:27,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:42:27,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1940408699, now seen corresponding path program 4 times [2023-01-27 23:42:27,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:42:27,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705293248] [2023-01-27 23:42:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:42:27,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:42:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:42:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:42:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:42:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705293248] [2023-01-27 23:42:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705293248] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:42:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387505290] [2023-01-27 23:42:30,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:42:30,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:42:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:42:30,563 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:42:30,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:44:20,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:44:20,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:44:20,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-27 23:44:20,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:44:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:44:21,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:44:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:44:23,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387505290] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:44:23,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:44:23,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-01-27 23:44:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192552975] [2023-01-27 23:44:23,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:44:23,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-01-27 23:44:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:44:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-01-27 23:44:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-01-27 23:44:23,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:44:23,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 982 places, 1808 transitions, 28624 flow. Second operand has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:44:23,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:44:23,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:44:23,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:45:06,236 INFO L130 PetriNetUnfolder]: 10300/25207 cut-off events. [2023-01-27 23:45:06,237 INFO L131 PetriNetUnfolder]: For 19689145/19689145 co-relation queries the response was YES. [2023-01-27 23:45:06,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700705 conditions, 25207 events. 10300/25207 cut-off events. For 19689145/19689145 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 121941 event pairs, 393 based on Foata normal form. 848/26019 useless extension candidates. Maximal degree in co-relation 700365. Up to 6939 conditions per place. [2023-01-27 23:45:07,174 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 3731 selfloop transitions, 522 changer transitions 0/4256 dead transitions. [2023-01-27 23:45:07,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 4256 transitions, 144092 flow [2023-01-27 23:45:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-01-27 23:45:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-01-27 23:45:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22421 transitions. [2023-01-27 23:45:07,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261663381207171 [2023-01-27 23:45:07,190 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22421 transitions. [2023-01-27 23:45:07,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22421 transitions. [2023-01-27 23:45:07,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:45:07,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22421 transitions. [2023-01-27 23:45:07,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 211.5188679245283) internal successors, (22421), 106 states have internal predecessors, (22421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:45:07,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:45:07,251 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:45:07,251 INFO L175 Difference]: Start difference. First operand has 982 places, 1808 transitions, 28624 flow. Second operand 106 states and 22421 transitions. [2023-01-27 23:45:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 4256 transitions, 144092 flow [2023-01-27 23:45:28,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 4256 transitions, 119310 flow, removed 10235 selfloop flow, removed 91 redundant places. [2023-01-27 23:45:28,570 INFO L231 Difference]: Finished difference. Result has 1050 places, 2072 transitions, 22080 flow [2023-01-27 23:45:28,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=16141, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=22080, PETRI_PLACES=1050, PETRI_TRANSITIONS=2072} [2023-01-27 23:45:28,572 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1003 predicate places. [2023-01-27 23:45:28,572 INFO L495 AbstractCegarLoop]: Abstraction has has 1050 places, 2072 transitions, 22080 flow [2023-01-27 23:45:28,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:45:28,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:45:28,574 INFO L208 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:45:28,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 23:45:28,775 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 [2023-01-27 23:45:28,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:45:28,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:45:28,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1009204112, now seen corresponding path program 5 times [2023-01-27 23:45:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:45:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419082593] [2023-01-27 23:45:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:45:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:45:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:45:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:45:38,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:45:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419082593] [2023-01-27 23:45:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419082593] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:45:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472872939] [2023-01-27 23:45:38,203 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:45:38,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:45:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:45:38,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:45:38,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:45:40,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-01-27 23:45:40,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:45:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 197 conjunts are in the unsatisfiable core [2023-01-27 23:45:40,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:45:40,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-27 23:45:40,811 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:45:40,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 38 [2023-01-27 23:45:41,018 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:41,027 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-27 23:45:41,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-27 23:45:41,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:41,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:45:41,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2023-01-27 23:45:41,334 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:45:41,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2023-01-27 23:45:41,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:41,466 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-27 23:45:41,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-27 23:45:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:41,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:45:41,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 47 [2023-01-27 23:45:41,882 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:45:41,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2023-01-27 23:45:42,018 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:42,025 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-27 23:45:42,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-27 23:45:42,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:42,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:45:42,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 47 [2023-01-27 23:45:42,449 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:45:42,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2023-01-27 23:45:42,643 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:42,652 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-27 23:45:42,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-27 23:45:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:42,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:45:42,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-01-27 23:45:42,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:42,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-27 23:45:43,116 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:43,122 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:45:43,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:45:43,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:43,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:45:43,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-01-27 23:45:43,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:43,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-27 23:45:43,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:43,588 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:45:43,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:45:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:43,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:45:43,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-01-27 23:45:43,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:43,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-27 23:45:44,067 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:44,073 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:45:44,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:45:44,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:44,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:45:44,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-27 23:45:44,395 INFO L321 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-01-27 23:45:44,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-01-27 23:45:44,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:45:44,537 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:45:44,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:45:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:45:44,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:45:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12060 proven. 93 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2023-01-27 23:45:44,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-01-27 23:54:46,723 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:54:46,744 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:54:46,822 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 23:54:46,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 23:54:47,023 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,SelfDestructingSolverStorable11 [2023-01-27 23:54:47,023 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. [2023-01-27 23:54:47,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-27 23:54:47,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 23:54:47,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 23:54:47,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-27 23:54:47,025 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1] [2023-01-27 23:54:47,028 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:54:47,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:54:47,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:54:47 BasicIcfg [2023-01-27 23:54:47,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:54:47,030 INFO L158 Benchmark]: Toolchain (without parser) took 846436.32ms. Allocated memory was 388.0MB in the beginning and 5.7GB in the end (delta: 5.3GB). Free memory was 351.6MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-01-27 23:54:47,030 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 388.0MB. Free memory is still 342.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:54:47,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.00ms. Allocated memory is still 388.0MB. Free memory was 351.4MB in the beginning and 321.5MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-27 23:54:47,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.60ms. Allocated memory is still 388.0MB. Free memory was 321.5MB in the beginning and 318.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 23:54:47,031 INFO L158 Benchmark]: Boogie Preprocessor took 45.77ms. Allocated memory is still 388.0MB. Free memory was 318.6MB in the beginning and 316.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:54:47,031 INFO L158 Benchmark]: RCFGBuilder took 431.97ms. Allocated memory is still 388.0MB. Free memory was 316.5MB in the beginning and 295.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 23:54:47,031 INFO L158 Benchmark]: TraceAbstraction took 845498.26ms. Allocated memory was 388.0MB in the beginning and 5.7GB in the end (delta: 5.3GB). Free memory was 294.9MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-01-27 23:54:47,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 388.0MB. Free memory is still 342.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 408.00ms. Allocated memory is still 388.0MB. Free memory was 351.4MB in the beginning and 321.5MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.60ms. Allocated memory is still 388.0MB. Free memory was 321.5MB in the beginning and 318.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.77ms. Allocated memory is still 388.0MB. Free memory was 318.6MB in the beginning and 316.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 431.97ms. Allocated memory is still 388.0MB. Free memory was 316.5MB in the beginning and 295.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 845498.26ms. Allocated memory was 388.0MB in the beginning and 5.7GB in the end (delta: 5.3GB). Free memory was 294.9MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 199 PlacesBefore, 47 PlacesAfterwards, 205 TransitionsBefore, 47 TransitionsAfterwards, 9984 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 186 TotalNumberOfCompositions, 19772 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9519, independent: 9080, independent conditional: 0, independent unconditional: 9080, dependent: 439, dependent conditional: 0, dependent unconditional: 439, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5401, independent: 5319, independent conditional: 0, independent unconditional: 5319, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9519, independent: 3761, independent conditional: 0, independent unconditional: 3761, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 5401, unknown conditional: 0, unknown unconditional: 5401] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 233, Positive conditional cache size: 0, Positive unconditional cache size: 233, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 327 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.3s, OverallIterations: 12, TraceHistogramMax: 104, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 145.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10231 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10231 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 13852 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1613 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5671 IncrementalHoareTripleChecker+Invalid, 21136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1613 mSolverCounterUnsat, 1 mSDtfsCounter, 5671 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4214 GetRequests, 2943 SyntacticMatches, 422 SemanticMatches, 849 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 293948 ImplicationChecksByTransitivity, 76.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28624occurred in iteration=10, InterpolantAutomatonStates: 777, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 112.2s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 2615 NumberOfCodeBlocks, 2221 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3867 ConstructedInterpolants, 14 QuantifiedInterpolants, 14444 SizeOfPredicates, 23 NumberOfNonLiveVariables, 6392 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 15125/56455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown