/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:15:30,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:15:30,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:15:30,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:15:30,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:15:30,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:15:30,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:15:30,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:15:30,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:15:30,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:15:30,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:15:30,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:15:30,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:15:30,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:15:30,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:15:30,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:15:30,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:15:30,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:15:30,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:15:30,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:15:30,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:15:30,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:15:30,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:15:30,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:15:30,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:15:30,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:15:30,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:15:30,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:15:30,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:15:30,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:15:30,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:15:30,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:15:30,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:15:30,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:15:30,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:15:30,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:15:30,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:15:30,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:15:30,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:15:30,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:15:30,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:15:30,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 12:15:30,469 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:15:30,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:15:30,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:15:30,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:15:30,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:15:30,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:15:30,471 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:15:30,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:15:30,471 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:15:30,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:15:30,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:15:30,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:15:30,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:15:30,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:15:30,474 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:15:30,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:15:30,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:15:30,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:15:30,682 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:15:30,683 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:15:30,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-01-28 12:15:31,694 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:15:31,816 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:15:31,816 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-01-28 12:15:31,820 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99aedd288/2bb2891040c34b27b90ab9ed1b7a72a8/FLAG5172db685 [2023-01-28 12:15:31,829 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99aedd288/2bb2891040c34b27b90ab9ed1b7a72a8 [2023-01-28 12:15:31,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:15:31,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:15:31,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:15:31,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:15:31,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:15:31,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:15:31" (1/1) ... [2023-01-28 12:15:31,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d644638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:31, skipping insertion in model container [2023-01-28 12:15:31,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:15:31" (1/1) ... [2023-01-28 12:15:31,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:15:31,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:15:31,965 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2023-01-28 12:15:31,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:15:31,975 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:15:31,997 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2023-01-28 12:15:31,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:15:32,008 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:15:32,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32 WrapperNode [2023-01-28 12:15:32,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:15:32,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:15:32,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:15:32,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:15:32,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,065 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 207 [2023-01-28 12:15:32,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:15:32,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:15:32,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:15:32,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:15:32,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:15:32,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:15:32,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:15:32,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:15:32,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (1/1) ... [2023-01-28 12:15:32,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:15:32,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:15:32,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 12:15:32,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 12:15:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:15:32,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:15:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:15:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:15:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:15:32,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:15:32,159 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 12:15:32,222 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:15:32,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:15:32,491 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:15:32,498 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:15:32,499 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 12:15:32,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:15:32 BoogieIcfgContainer [2023-01-28 12:15:32,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:15:32,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:15:32,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:15:32,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:15:32,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:15:31" (1/3) ... [2023-01-28 12:15:32,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@986dca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:15:32, skipping insertion in model container [2023-01-28 12:15:32,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:15:32" (2/3) ... [2023-01-28 12:15:32,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@986dca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:15:32, skipping insertion in model container [2023-01-28 12:15:32,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:15:32" (3/3) ... [2023-01-28 12:15:32,505 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-01-28 12:15:32,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:15:32,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:15:32,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:15:32,609 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:15:32,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 250 transitions, 516 flow [2023-01-28 12:15:32,701 INFO L130 PetriNetUnfolder]: 24/248 cut-off events. [2023-01-28 12:15:32,701 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:32,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 24/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 480 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-01-28 12:15:32,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 250 transitions, 516 flow [2023-01-28 12:15:32,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 240 transitions, 492 flow [2023-01-28 12:15:32,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:15:32,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 240 transitions, 492 flow [2023-01-28 12:15:32,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 240 transitions, 492 flow [2023-01-28 12:15:32,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 240 transitions, 492 flow [2023-01-28 12:15:32,760 INFO L130 PetriNetUnfolder]: 24/240 cut-off events. [2023-01-28 12:15:32,760 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:32,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 24/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 460 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-01-28 12:15:32,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 6892 [2023-01-28 12:15:53,367 WARN L222 SmtUtils]: Spent 11.00s on a formula simplification. DAG size of input: 203 DAG size of output: 201 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 12:15:57,832 INFO L134 LiptonReduction]: Checked pairs total: 6654 [2023-01-28 12:15:57,833 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-01-28 12:15:57,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:15:57,845 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;@43d7f1c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:15:57,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:15:57,849 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 12:15:57,849 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:15:57,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:57,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:57,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:57,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:57,853 INFO L85 PathProgramCache]: Analyzing trace with hash 678661713, now seen corresponding path program 1 times [2023-01-28 12:15:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014717718] [2023-01-28 12:15:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:15:58,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:58,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014717718] [2023-01-28 12:15:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014717718] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:58,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:58,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:15:58,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629029605] [2023-01-28 12:15:58,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:58,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:15:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:15:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:15:58,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 550 [2023-01-28 12:15:58,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:58,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 550 [2023-01-28 12:15:58,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:58,341 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-01-28 12:15:58,341 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 12:15:58,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 80 events. 45/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 18 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2023-01-28 12:15:58,343 INFO L137 encePairwiseOnDemand]: 547/550 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 12:15:58,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 12:15:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:15:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:15:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-01-28 12:15:58,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793939393939394 [2023-01-28 12:15:58,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-01-28 12:15:58,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-01-28 12:15:58,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:58,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-01-28 12:15:58,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,408 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 626 transitions. [2023-01-28 12:15:58,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 12:15:58,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:15:58,412 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 12:15:58,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 12:15:58,438 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 12:15:58,438 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 12:15:58,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:58,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:58,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:15:58,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:58,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:58,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1026241164, now seen corresponding path program 1 times [2023-01-28 12:15:58,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:58,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778288200] [2023-01-28 12:15:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:58,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:58,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778288200] [2023-01-28 12:15:58,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778288200] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:58,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:58,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:58,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999029277] [2023-01-28 12:15:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:58,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:58,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:58,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:58,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:58,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 550 [2023-01-28 12:15:58,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:58,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 550 [2023-01-28 12:15:58,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:58,874 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-01-28 12:15:58,874 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 12:15:58,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 368 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-01-28 12:15:58,875 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-01-28 12:15:58,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-01-28 12:15:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1000 transitions. [2023-01-28 12:15:58,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2023-01-28 12:15:58,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1000 transitions. [2023-01-28 12:15:58,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1000 transitions. [2023-01-28 12:15:58,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:58,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1000 transitions. [2023-01-28 12:15:58,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,886 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 1000 transitions. [2023-01-28 12:15:58,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-01-28 12:15:58,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:58,888 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-01-28 12:15:58,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-28 12:15:58,889 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-28 12:15:58,889 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-01-28 12:15:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:58,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:58,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:15:58,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:58,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1210956036, now seen corresponding path program 2 times [2023-01-28 12:15:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068100815] [2023-01-28 12:15:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068100815] [2023-01-28 12:15:59,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068100815] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:59,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472436562] [2023-01-28 12:15:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:59,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:59,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 550 [2023-01-28 12:15:59,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:59,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 550 [2023-01-28 12:15:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:59,202 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2023-01-28 12:15:59,202 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-01-28 12:15:59,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 647 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2023-01-28 12:15:59,203 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-01-28 12:15:59,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2023-01-28 12:15:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:59,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 996 transitions. [2023-01-28 12:15:59,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36218181818181816 [2023-01-28 12:15:59,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 996 transitions. [2023-01-28 12:15:59,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 996 transitions. [2023-01-28 12:15:59,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:59,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 996 transitions. [2023-01-28 12:15:59,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,212 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 996 transitions. [2023-01-28 12:15:59,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2023-01-28 12:15:59,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:59,214 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2023-01-28 12:15:59,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 12:15:59,215 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-01-28 12:15:59,215 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2023-01-28 12:15:59,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:59,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:59,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:15:59,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:59,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1449066184, now seen corresponding path program 3 times [2023-01-28 12:15:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:59,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891838933] [2023-01-28 12:15:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:59,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891838933] [2023-01-28 12:15:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891838933] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:59,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524806925] [2023-01-28 12:15:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:59,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 550 [2023-01-28 12:15:59,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:59,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 550 [2023-01-28 12:15:59,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:15:59,578 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2023-01-28 12:15:59,578 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-01-28 12:15:59,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 734 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2023-01-28 12:15:59,581 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-01-28 12:15:59,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2023-01-28 12:15:59,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:15:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:15:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1001 transitions. [2023-01-28 12:15:59,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364 [2023-01-28 12:15:59,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1001 transitions. [2023-01-28 12:15:59,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1001 transitions. [2023-01-28 12:15:59,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:15:59,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1001 transitions. [2023-01-28 12:15:59,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.2) internal successors, (1001), 5 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,595 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 1001 transitions. [2023-01-28 12:15:59,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2023-01-28 12:15:59,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 12:15:59,599 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2023-01-28 12:15:59,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-01-28 12:15:59,600 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-28 12:15:59,600 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2023-01-28 12:15:59,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:15:59,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:15:59,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 12:15:59,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:15:59,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:15:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2041421108, now seen corresponding path program 4 times [2023-01-28 12:15:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:15:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166285108] [2023-01-28 12:15:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:15:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:15:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:15:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:15:59,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:15:59,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166285108] [2023-01-28 12:15:59,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166285108] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:15:59,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:15:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:15:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177111872] [2023-01-28 12:15:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:15:59,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:15:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:15:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:15:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:15:59,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 550 [2023-01-28 12:15:59,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:15:59,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:15:59,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 550 [2023-01-28 12:15:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:16:00,012 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2023-01-28 12:16:00,012 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2023-01-28 12:16:00,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 704 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2023-01-28 12:16:00,013 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2023-01-28 12:16:00,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2023-01-28 12:16:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:16:00,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:16:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 995 transitions. [2023-01-28 12:16:00,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3618181818181818 [2023-01-28 12:16:00,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 995 transitions. [2023-01-28 12:16:00,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 995 transitions. [2023-01-28 12:16:00,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:16:00,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 995 transitions. [2023-01-28 12:16:00,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,021 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 995 transitions. [2023-01-28 12:16:00,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2023-01-28 12:16:00,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 12:16:00,024 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2023-01-28 12:16:00,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-28 12:16:00,026 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-01-28 12:16:00,026 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2023-01-28 12:16:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:16:00,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:16:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 12:16:00,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:16:00,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:16:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1949255900, now seen corresponding path program 5 times [2023-01-28 12:16:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:16:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527507207] [2023-01-28 12:16:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:00,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:16:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:16:00,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:16:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527507207] [2023-01-28 12:16:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527507207] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:16:00,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:16:00,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:16:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329558622] [2023-01-28 12:16:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:16:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:16:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:16:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:16:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:16:00,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 550 [2023-01-28 12:16:00,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:16:00,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 550 [2023-01-28 12:16:00,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:16:00,339 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2023-01-28 12:16:00,339 INFO L131 PetriNetUnfolder]: For 638/638 co-relation queries the response was YES. [2023-01-28 12:16:00,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 737 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2023-01-28 12:16:00,341 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-01-28 12:16:00,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2023-01-28 12:16:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:16:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:16:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2023-01-28 12:16:00,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36327272727272725 [2023-01-28 12:16:00,344 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2023-01-28 12:16:00,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2023-01-28 12:16:00,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:16:00,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2023-01-28 12:16:00,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,350 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 999 transitions. [2023-01-28 12:16:00,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2023-01-28 12:16:00,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 12:16:00,353 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2023-01-28 12:16:00,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-01-28 12:16:00,355 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-01-28 12:16:00,355 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2023-01-28 12:16:00,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:16:00,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:16:00,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 12:16:00,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:16:00,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:16:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1265068822, now seen corresponding path program 6 times [2023-01-28 12:16:00,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:16:00,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362498747] [2023-01-28 12:16:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:16:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:16:00,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:16:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362498747] [2023-01-28 12:16:00,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362498747] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:16:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:16:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:16:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124777028] [2023-01-28 12:16:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:16:00,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:16:00,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:16:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:16:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:16:00,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 550 [2023-01-28 12:16:00,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:16:00,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 550 [2023-01-28 12:16:00,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:16:00,635 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-01-28 12:16:00,635 INFO L131 PetriNetUnfolder]: For 674/674 co-relation queries the response was YES. [2023-01-28 12:16:00,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 677 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2023-01-28 12:16:00,636 INFO L137 encePairwiseOnDemand]: 544/550 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2023-01-28 12:16:00,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2023-01-28 12:16:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:16:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:16:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 995 transitions. [2023-01-28 12:16:00,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3618181818181818 [2023-01-28 12:16:00,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 995 transitions. [2023-01-28 12:16:00,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 995 transitions. [2023-01-28 12:16:00,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:16:00,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 995 transitions. [2023-01-28 12:16:00,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 550.0) internal successors, (3300), 6 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,644 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 995 transitions. [2023-01-28 12:16:00,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2023-01-28 12:16:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 12:16:00,646 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2023-01-28 12:16:00,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-01-28 12:16:00,647 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2023-01-28 12:16:00,647 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2023-01-28 12:16:00,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:00,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:16:00,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:16:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 12:16:00,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:16:00,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:16:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -29277619, now seen corresponding path program 1 times [2023-01-28 12:16:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:16:00,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124485939] [2023-01-28 12:16:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:16:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:16:00,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:16:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124485939] [2023-01-28 12:16:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124485939] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:16:00,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737435085] [2023-01-28 12:16:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:00,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:16:00,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:16:00,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:16:00,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:16:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:00,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 12:16:00,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:16:05,203 INFO L321 Elim1Store]: treesize reduction 294, result has 7.8 percent of original size [2023-01-28 12:16:05,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 537 treesize of output 386 [2023-01-28 12:16:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:16:09,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:16:29,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:16:29,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 329 treesize of output 213 [2023-01-28 12:16:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:16:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737435085] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:16:30,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:16:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-01-28 12:16:30,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039289035] [2023-01-28 12:16:30,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:16:30,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:16:30,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:16:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:16:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-01-28 12:16:30,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 550 [2023-01-28 12:16:30,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 16 states, 16 states have (on average 101.0) internal successors, (1616), 16 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:30,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:16:30,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 550 [2023-01-28 12:16:30,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:16:32,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:16:34,203 INFO L130 PetriNetUnfolder]: 297/530 cut-off events. [2023-01-28 12:16:34,204 INFO L131 PetriNetUnfolder]: For 1701/1701 co-relation queries the response was YES. [2023-01-28 12:16:34,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 530 events. 297/530 cut-off events. For 1701/1701 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2219 event pairs, 24 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1447. Up to 189 conditions per place. [2023-01-28 12:16:34,206 INFO L137 encePairwiseOnDemand]: 540/550 looper letters, 63 selfloop transitions, 37 changer transitions 58/158 dead transitions. [2023-01-28 12:16:34,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 158 transitions, 1339 flow [2023-01-28 12:16:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 12:16:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 12:16:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2084 transitions. [2023-01-28 12:16:34,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18945454545454546 [2023-01-28 12:16:34,212 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2084 transitions. [2023-01-28 12:16:34,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2084 transitions. [2023-01-28 12:16:34,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:16:34,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2084 transitions. [2023-01-28 12:16:34,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 104.2) internal successors, (2084), 20 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:34,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 550.0) internal successors, (11550), 21 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:34,226 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 550.0) internal successors, (11550), 21 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:34,226 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 20 states and 2084 transitions. [2023-01-28 12:16:34,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 158 transitions, 1339 flow [2023-01-28 12:16:34,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 158 transitions, 1269 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 12:16:34,232 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 565 flow [2023-01-28 12:16:34,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=565, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-01-28 12:16:34,233 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 52 predicate places. [2023-01-28 12:16:34,234 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 565 flow [2023-01-28 12:16:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 101.0) internal successors, (1616), 16 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:16:34,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:16:34,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:16:34,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 12:16:34,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:16:34,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:16:34,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:16:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -418800640, now seen corresponding path program 1 times [2023-01-28 12:16:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:16:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517025957] [2023-01-28 12:16:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:16:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:16:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:16:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517025957] [2023-01-28 12:16:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517025957] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:16:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341847] [2023-01-28 12:16:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:16:34,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:16:34,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:16:34,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:16:34,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:16:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:16:34,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 12:16:34,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:16:34,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:16:34,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:16:34,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:16:35,250 INFO L321 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-01-28 12:16:35,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 320 [2023-01-28 12:16:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:16:35,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:16:56,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:16:56,021 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 464 treesize of output 272 [2023-01-28 12:16:56,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:16:56,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1536 treesize of output 1392 [2023-01-28 12:16:56,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:16:56,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 250 treesize of output 276 [2023-01-28 12:17:00,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:17:00,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 345 treesize of output 269 [2023-01-28 12:17:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:00,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341847] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:00,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:17:00,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-01-28 12:17:00,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776296361] [2023-01-28 12:17:00,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:00,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 12:17:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 12:17:00,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=370, Unknown=3, NotChecked=0, Total=462 [2023-01-28 12:17:00,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 550 [2023-01-28 12:17:00,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 565 flow. Second operand has 22 states, 22 states have (on average 129.1818181818182) internal successors, (2842), 22 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:17:00,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:00,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 550 [2023-01-28 12:17:00,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:04,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:17:06,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:17:15,057 WARN L222 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 87 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:17:40,668 WARN L222 SmtUtils]: Spent 12.67s on a formula simplification. DAG size of input: 159 DAG size of output: 147 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:17:46,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:17:55,626 WARN L222 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 79 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:17:57,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:18:00,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 12:18:03,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 12:18:05,909 INFO L130 PetriNetUnfolder]: 562/1005 cut-off events. [2023-01-28 12:18:05,909 INFO L131 PetriNetUnfolder]: For 3357/3357 co-relation queries the response was YES. [2023-01-28 12:18:05,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4242 conditions, 1005 events. 562/1005 cut-off events. For 3357/3357 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5023 event pairs, 29 based on Foata normal form. 19/827 useless extension candidates. Maximal degree in co-relation 4176. Up to 353 conditions per place. [2023-01-28 12:18:05,914 INFO L137 encePairwiseOnDemand]: 539/550 looper letters, 147 selfloop transitions, 97 changer transitions 66/310 dead transitions. [2023-01-28 12:18:05,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 310 transitions, 2486 flow [2023-01-28 12:18:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-28 12:18:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-28 12:18:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 5343 transitions. [2023-01-28 12:18:05,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24286363636363636 [2023-01-28 12:18:05,939 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 5343 transitions. [2023-01-28 12:18:05,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 5343 transitions. [2023-01-28 12:18:05,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:18:05,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 5343 transitions. [2023-01-28 12:18:05,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 133.575) internal successors, (5343), 40 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:18:05,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 550.0) internal successors, (22550), 41 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:18:05,975 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 550.0) internal successors, (22550), 41 states have internal predecessors, (22550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:18:05,975 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 565 flow. Second operand 40 states and 5343 transitions. [2023-01-28 12:18:05,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 310 transitions, 2486 flow [2023-01-28 12:18:05,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 310 transitions, 2103 flow, removed 163 selfloop flow, removed 7 redundant places. [2023-01-28 12:18:05,989 INFO L231 Difference]: Finished difference. Result has 115 places, 134 transitions, 1272 flow [2023-01-28 12:18:05,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=1272, PETRI_PLACES=115, PETRI_TRANSITIONS=134} [2023-01-28 12:18:05,990 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 94 predicate places. [2023-01-28 12:18:05,990 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 134 transitions, 1272 flow [2023-01-28 12:18:05,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 129.1818181818182) internal successors, (2842), 22 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:18:05,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:18:05,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:18:05,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 12:18:06,196 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,SelfDestructingSolverStorable8 [2023-01-28 12:18:06,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:18:06,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:18:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash -384436778, now seen corresponding path program 2 times [2023-01-28 12:18:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:18:06,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532067421] [2023-01-28 12:18:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:18:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:18:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:18:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:18:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:18:06,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532067421] [2023-01-28 12:18:06,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532067421] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:18:06,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700152002] [2023-01-28 12:18:06,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:18:06,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:18:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:18:06,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:18:06,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 12:18:06,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:18:06,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:18:06,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 12:18:06,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:18:06,854 INFO L321 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2023-01-28 12:18:06,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 343 treesize of output 320 [2023-01-28 12:18:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:18:07,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:26:54,025 WARN L222 SmtUtils]: Spent 8.52m on a formula simplification. DAG size of input: 5617 DAG size of output: 4993 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 12:30:04,309 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:30:04,324 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:30:05,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 12:30:05,525 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-01-28 12:30:05,536 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-01-28 12:30:05,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 12:30:05,537 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:236) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:254) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:800) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-28 12:30:05,540 INFO L158 Benchmark]: Toolchain (without parser) took 873707.67ms. Allocated memory was 356.5MB in the beginning and 1.1GB in the end (delta: 710.9MB). Free memory was 302.3MB in the beginning and 916.1MB in the end (delta: -613.9MB). Peak memory consumption was 630.1MB. Max. memory is 16.0GB. [2023-01-28 12:30:05,540 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory was 213.3MB in the beginning and 213.2MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:30:05,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.61ms. Allocated memory is still 356.5MB. Free memory was 302.1MB in the beginning and 290.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:30:05,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.37ms. Allocated memory is still 356.5MB. Free memory was 289.9MB in the beginning and 334.1MB in the end (delta: -44.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. [2023-01-28 12:30:05,540 INFO L158 Benchmark]: Boogie Preprocessor took 34.68ms. Allocated memory is still 356.5MB. Free memory was 334.1MB in the beginning and 332.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:30:05,540 INFO L158 Benchmark]: RCFGBuilder took 398.72ms. Allocated memory is still 356.5MB. Free memory was 332.3MB in the beginning and 311.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 12:30:05,540 INFO L158 Benchmark]: TraceAbstraction took 873037.77ms. Allocated memory was 356.5MB in the beginning and 1.1GB in the end (delta: 710.9MB). Free memory was 310.7MB in the beginning and 916.1MB in the end (delta: -605.4MB). Peak memory consumption was 637.3MB. Max. memory is 16.0GB. [2023-01-28 12:30:05,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-01-28 12:30:05,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory was 213.3MB in the beginning and 213.2MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 175.61ms. Allocated memory is still 356.5MB. Free memory was 302.1MB in the beginning and 290.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.37ms. Allocated memory is still 356.5MB. Free memory was 289.9MB in the beginning and 334.1MB in the end (delta: -44.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.68ms. Allocated memory is still 356.5MB. Free memory was 334.1MB in the beginning and 332.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 398.72ms. Allocated memory is still 356.5MB. Free memory was 332.3MB in the beginning and 311.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 873037.77ms. Allocated memory was 356.5MB in the beginning and 1.1GB in the end (delta: 710.9MB). Free memory was 310.7MB in the beginning and 916.1MB in the end (delta: -605.4MB). Peak memory consumption was 637.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.1s, 223 PlacesBefore, 21 PlacesAfterwards, 240 TransitionsBefore, 17 TransitionsAfterwards, 6892 CoEnabledTransitionPairs, 9 FixpointIterations, 65 TrivialSequentialCompositions, 139 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 57 ConcurrentYvCompositions, 21 ChoiceCompositions, 300 TotalNumberOfCompositions, 6654 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6555, independent: 6543, independent conditional: 0, independent unconditional: 6543, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4150, independent: 4144, independent conditional: 0, independent unconditional: 4144, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6555, independent: 2399, independent conditional: 0, independent unconditional: 2399, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 4150, unknown conditional: 0, unknown unconditional: 4150] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown