/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:39:15,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:39:15,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:39:15,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:39:15,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:39:15,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:39:15,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:39:15,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:39:15,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:39:15,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:39:15,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:39:15,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:39:15,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:39:15,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:39:15,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:39:15,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:39:15,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:39:15,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:39:15,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:39:15,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:39:15,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:39:15,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:39:15,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:39:15,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:39:15,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:39:15,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:39:15,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:39:15,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:39:15,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:39:15,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 23:39:15,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:39:15,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:39:15,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:39:15,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:39:15,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:39:15,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:39:15,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:39:15,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:39:15,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:39:15,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:39:15,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:39:15,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:39:15,713 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:39:15,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:39:15,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:39:15,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:39:15,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:39:15,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:39:15,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:39:15,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:39:15,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:39:15,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:15,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:39:15,717 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:39:15,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:39:15,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:39:15,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:39:15,911 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:39:15,911 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:39:15,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-01-27 23:39:16,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:39:17,081 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:39:17,082 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-01-27 23:39:17,105 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb08c66e/55d7991840d5492289569562a254b591/FLAGee8624dbf [2023-01-27 23:39:17,114 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb08c66e/55d7991840d5492289569562a254b591 [2023-01-27 23:39:17,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:39:17,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:39:17,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:39:17,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:39:17,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698f2cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:39:17,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:39:17,507 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-01-27 23:39:17,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,528 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:39:17,559 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-01-27 23:39:17,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:17,614 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:39:17,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17 WrapperNode [2023-01-27 23:39:17,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:39:17,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:39:17,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,664 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-27 23:39:17,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:17,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:39:17,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:39:17,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:39:17,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:39:17,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:39:17,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:39:17,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:17,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:39:17,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:39:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:39:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:39:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-01-27 23:39:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:39:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:39:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:39:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:39:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:39:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:39:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 23:39:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:39:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:39:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:39:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:39:17,782 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:39:17,944 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:39:17,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:39:18,106 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:39:18,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:39:18,114 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-27 23:39:18,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:18 BoogieIcfgContainer [2023-01-27 23:39:18,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:39:18,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:39:18,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:39:18,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:39:18,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:39:17" (1/3) ... [2023-01-27 23:39:18,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ec2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:18, skipping insertion in model container [2023-01-27 23:39:18,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17" (2/3) ... [2023-01-27 23:39:18,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ec2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:18, skipping insertion in model container [2023-01-27 23:39:18,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:18" (3/3) ... [2023-01-27 23:39:18,120 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-01-27 23:39:18,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:39:18,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:39:18,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:39:18,182 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:39:18,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 180 flow [2023-01-27 23:39:18,231 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-01-27 23:39:18,231 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:18,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 4/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-01-27 23:39:18,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 180 flow [2023-01-27 23:39:18,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2023-01-27 23:39:18,238 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:39:18,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 150 flow [2023-01-27 23:39:18,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 150 flow [2023-01-27 23:39:18,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 150 flow [2023-01-27 23:39:18,259 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2023-01-27 23:39:18,259 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:18,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-01-27 23:39:18,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-01-27 23:39:20,231 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-01-27 23:39:20,231 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-01-27 23:39:20,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:39:20,260 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;@100ece0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:39:20,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:39:20,263 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-01-27 23:39:20,263 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:20,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:20,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:20,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:20,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1440544796, now seen corresponding path program 1 times [2023-01-27 23:39:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890488064] [2023-01-27 23:39:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:20,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890488064] [2023-01-27 23:39:20,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890488064] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:20,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959143763] [2023-01-27 23:39:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:20,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:20,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:20,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 142 [2023-01-27 23:39:20,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:20,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 142 [2023-01-27 23:39:20,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:20,555 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2023-01-27 23:39:20,555 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:20,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-01-27 23:39:20,556 INFO L137 encePairwiseOnDemand]: 140/142 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-01-27 23:39:20,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-01-27 23:39:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-01-27 23:39:20,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2023-01-27 23:39:20,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-01-27 23:39:20,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-01-27 23:39:20,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:20,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-01-27 23:39:20,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,584 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 222 transitions. [2023-01-27 23:39:20,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-01-27 23:39:20,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:39:20,587 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-01-27 23:39:20,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-01-27 23:39:20,590 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-01-27 23:39:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-01-27 23:39:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:20,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:39:20,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:20,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1703930448, now seen corresponding path program 1 times [2023-01-27 23:39:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578910434] [2023-01-27 23:39:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:20,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578910434] [2023-01-27 23:39:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578910434] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:20,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:20,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 23:39:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828672513] [2023-01-27 23:39:20,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 23:39:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 23:39:20,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:39:20,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 142 [2023-01-27 23:39:20,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:20,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:20,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 142 [2023-01-27 23:39:20,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:21,062 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-01-27 23:39:21,062 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:39:21,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2023-01-27 23:39:21,063 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-01-27 23:39:21,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-01-27 23:39:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:39:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:39:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2023-01-27 23:39:21,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.323943661971831 [2023-01-27 23:39:21,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 230 transitions. [2023-01-27 23:39:21,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 230 transitions. [2023-01-27 23:39:21,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:21,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 230 transitions. [2023-01-27 23:39:21,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:21,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:21,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:21,073 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 230 transitions. [2023-01-27 23:39:21,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-01-27 23:39:21,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:21,074 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-01-27 23:39:21,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-01-27 23:39:21,074 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-27 23:39:21,075 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-01-27 23:39:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 43.5) internal successors, (348), 8 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:21,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:21,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:39:21,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:21,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1951074546, now seen corresponding path program 1 times [2023-01-27 23:39:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685323199] [2023-01-27 23:39:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:21,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685323199] [2023-01-27 23:39:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685323199] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626733259] [2023-01-27 23:39:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:21,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:21,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:21,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:39:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:21,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-27 23:39:21,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:21,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:21,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:21,659 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 23:39:21,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-01-27 23:39:21,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:21,828 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 23:39:21,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:39:21,867 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:21,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:21,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:22,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626733259] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:22,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-01-27 23:39:22,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247757097] [2023-01-27 23:39:22,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:22,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:39:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:39:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:39:22,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 142 [2023-01-27 23:39:22,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 58 flow. Second operand has 18 states, 18 states have (on average 39.05555555555556) internal successors, (703), 18 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:22,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 142 [2023-01-27 23:39:22,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:22,319 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2023-01-27 23:39:22,320 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-27 23:39:22,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-01-27 23:39:22,320 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-01-27 23:39:22,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 163 flow [2023-01-27 23:39:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 366 transitions. [2023-01-27 23:39:22,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2863849765258216 [2023-01-27 23:39:22,322 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 366 transitions. [2023-01-27 23:39:22,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 366 transitions. [2023-01-27 23:39:22,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:22,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 366 transitions. [2023-01-27 23:39:22,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.666666666666664) internal successors, (366), 9 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,325 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 9 states and 366 transitions. [2023-01-27 23:39:22,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 163 flow [2023-01-27 23:39:22,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:22,326 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 98 flow [2023-01-27 23:39:22,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-01-27 23:39:22,326 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-01-27 23:39:22,327 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 98 flow [2023-01-27 23:39:22,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 39.05555555555556) internal successors, (703), 18 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:22,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:22,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:22,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:22,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:22,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:22,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:22,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1171585968, now seen corresponding path program 2 times [2023-01-27 23:39:22,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366496625] [2023-01-27 23:39:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:22,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:22,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:22,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366496625] [2023-01-27 23:39:22,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366496625] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285027988] [2023-01-27 23:39:22,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:39:22,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:22,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:23,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:23,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:39:23,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:39:23,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:23,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 23:39:23,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:23,122 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-01-27 23:39:23,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2023-01-27 23:39:23,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:23,245 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:39:23,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2023-01-27 23:39:23,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:23,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:23,508 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-27 23:39:23,512 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-27 23:39:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-01-27 23:39:23,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285027988] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:23,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:23,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-01-27 23:39:23,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762518848] [2023-01-27 23:39:23,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:23,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 23:39:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 23:39:23,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=8, NotChecked=94, Total=702 [2023-01-27 23:39:23,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-27 23:39:23,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 98 flow. Second operand has 27 states, 27 states have (on average 37.629629629629626) internal successors, (1016), 27 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:23,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:23,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-27 23:39:23,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:24,098 INFO L130 PetriNetUnfolder]: 14/44 cut-off events. [2023-01-27 23:39:24,099 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-27 23:39:24,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 44 events. 14/44 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 2 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 153. Up to 13 conditions per place. [2023-01-27 23:39:24,099 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 17 selfloop transitions, 9 changer transitions 2/28 dead transitions. [2023-01-27 23:39:24,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 186 flow [2023-01-27 23:39:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:39:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:39:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 317 transitions. [2023-01-27 23:39:24,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2790492957746479 [2023-01-27 23:39:24,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 317 transitions. [2023-01-27 23:39:24,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 317 transitions. [2023-01-27 23:39:24,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:24,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 317 transitions. [2023-01-27 23:39:24,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.625) internal successors, (317), 8 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:24,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:24,103 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:24,103 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 98 flow. Second operand 8 states and 317 transitions. [2023-01-27 23:39:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 186 flow [2023-01-27 23:39:24,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 162 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-27 23:39:24,104 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 108 flow [2023-01-27 23:39:24,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-01-27 23:39:24,105 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2023-01-27 23:39:24,105 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 108 flow [2023-01-27 23:39:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 37.629629629629626) internal successors, (1016), 27 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:24,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:24,105 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:24,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:24,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 23:39:24,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:24,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1959732808, now seen corresponding path program 3 times [2023-01-27 23:39:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:24,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296509824] [2023-01-27 23:39:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:24,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296509824] [2023-01-27 23:39:24,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296509824] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:24,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841580662] [2023-01-27 23:39:24,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:39:24,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:24,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:24,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:39:24,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 23:39:24,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:24,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-27 23:39:24,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:24,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:24,797 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2023-01-27 23:39:24,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 39 treesize of output 61 [2023-01-27 23:39:24,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:24,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:24,934 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-01-27 23:39:24,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:24,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:25,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:25,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:25,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:25,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:25,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:25,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:25,268 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-01-27 23:39:25,271 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-27 23:39:25,274 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-27 23:39:25,279 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-01-27 23:39:25,284 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-01-27 23:39:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2023-01-27 23:39:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841580662] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:25,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-01-27 23:39:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942728103] [2023-01-27 23:39:25,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:25,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 23:39:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 23:39:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=543, Unknown=6, NotChecked=250, Total=870 [2023-01-27 23:39:25,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-27 23:39:25,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 108 flow. Second operand has 30 states, 30 states have (on average 37.56666666666667) internal successors, (1127), 30 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:25,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:25,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-27 23:39:25,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:26,410 INFO L130 PetriNetUnfolder]: 17/57 cut-off events. [2023-01-27 23:39:26,411 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-01-27 23:39:26,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 57 events. 17/57 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 99 event pairs, 1 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 206. Up to 20 conditions per place. [2023-01-27 23:39:26,411 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 19 changer transitions 6/42 dead transitions. [2023-01-27 23:39:26,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 310 flow [2023-01-27 23:39:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 23:39:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 23:39:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 620 transitions. [2023-01-27 23:39:26,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.272887323943662 [2023-01-27 23:39:26,414 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 620 transitions. [2023-01-27 23:39:26,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 620 transitions. [2023-01-27 23:39:26,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:26,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 620 transitions. [2023-01-27 23:39:26,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 38.75) internal successors, (620), 16 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:26,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:26,417 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:26,417 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 108 flow. Second operand 16 states and 620 transitions. [2023-01-27 23:39:26,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 310 flow [2023-01-27 23:39:26,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 290 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 23:39:26,419 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 202 flow [2023-01-27 23:39:26,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=202, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-01-27 23:39:26,420 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 27 predicate places. [2023-01-27 23:39:26,420 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 202 flow [2023-01-27 23:39:26,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 37.56666666666667) internal successors, (1127), 30 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:26,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:26,420 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:26,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:26,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:26,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:39:26,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash -622481072, now seen corresponding path program 4 times [2023-01-27 23:39:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147671606] [2023-01-27 23:39:26,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147671606] [2023-01-27 23:39:27,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147671606] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:27,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046706713] [2023-01-27 23:39:27,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:39:27,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:27,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:27,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:39:27,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:39:27,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:27,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-27 23:39:27,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:27,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:27,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:27,172 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-27 23:39:27,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-27 23:39:27,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:27,283 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 23:39:27,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:39:27,334 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:27,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:27,381 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:27,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:27,437 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:27,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:27,477 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:27,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:27,520 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:27,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:27,562 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:39:27,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-01-27 23:39:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:27,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:41:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046706713] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:41:13,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:41:13,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-01-27 23:41:13,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067979912] [2023-01-27 23:41:13,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:41:13,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-27 23:41:13,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:41:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-27 23:41:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=850, Unknown=48, NotChecked=0, Total=1056 [2023-01-27 23:41:13,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-27 23:41:13,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 202 flow. Second operand has 33 states, 33 states have (on average 37.54545454545455) internal successors, (1239), 33 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:13,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:41:13,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-27 23:41:13,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:13,635 INFO L130 PetriNetUnfolder]: 12/46 cut-off events. [2023-01-27 23:41:13,635 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-01-27 23:41:13,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 46 events. 12/46 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 1 based on Foata normal form. 4/50 useless extension candidates. Maximal degree in co-relation 182. Up to 14 conditions per place. [2023-01-27 23:41:13,636 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-01-27 23:41:13,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 33 transitions, 272 flow [2023-01-27 23:41:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:41:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:41:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 425 transitions. [2023-01-27 23:41:13,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27208706786171577 [2023-01-27 23:41:13,638 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 425 transitions. [2023-01-27 23:41:13,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 425 transitions. [2023-01-27 23:41:13,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:13,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 425 transitions. [2023-01-27 23:41:13,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.63636363636363) internal successors, (425), 11 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:13,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:13,640 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:13,640 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 202 flow. Second operand 11 states and 425 transitions. [2023-01-27 23:41:13,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 33 transitions, 272 flow [2023-01-27 23:41:13,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 181 flow, removed 20 selfloop flow, removed 14 redundant places. [2023-01-27 23:41:13,641 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-01-27 23:41:13,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-01-27 23:41:13,642 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 22 predicate places. [2023-01-27 23:41:13,642 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-01-27 23:41:13,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 37.54545454545455) internal successors, (1239), 33 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:13,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:41:13,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:41:13,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:41:13,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 23:41:13,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:13,849 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-01-27 23:41:13,852 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:41:13,852 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:41:13,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:41:13 BasicIcfg [2023-01-27 23:41:13,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:41:13,857 INFO L158 Benchmark]: Toolchain (without parser) took 116736.94ms. Allocated memory was 604.0MB in the beginning and 725.6MB in the end (delta: 121.6MB). Free memory was 561.5MB in the beginning and 316.5MB in the end (delta: 245.0MB). Peak memory consumption was 367.3MB. Max. memory is 16.0GB. [2023-01-27 23:41:13,857 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 364.9MB. Free memory was 313.1MB in the beginning and 312.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:41:13,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.18ms. Allocated memory is still 604.0MB. Free memory was 561.2MB in the beginning and 529.1MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-27 23:41:13,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.10ms. Allocated memory is still 604.0MB. Free memory was 529.1MB in the beginning and 526.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:41:13,857 INFO L158 Benchmark]: Boogie Preprocessor took 30.61ms. Allocated memory is still 604.0MB. Free memory was 526.7MB in the beginning and 524.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:41:13,857 INFO L158 Benchmark]: RCFGBuilder took 419.31ms. Allocated memory is still 604.0MB. Free memory was 524.9MB in the beginning and 511.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 23:41:13,858 INFO L158 Benchmark]: TraceAbstraction took 115736.91ms. Allocated memory was 604.0MB in the beginning and 725.6MB in the end (delta: 121.6MB). Free memory was 510.6MB in the beginning and 316.5MB in the end (delta: 194.0MB). Peak memory consumption was 316.9MB. Max. memory is 16.0GB. [2023-01-27 23:41:13,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 364.9MB. Free memory was 313.1MB in the beginning and 312.9MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 497.18ms. Allocated memory is still 604.0MB. Free memory was 561.2MB in the beginning and 529.1MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.10ms. Allocated memory is still 604.0MB. Free memory was 529.1MB in the beginning and 526.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.61ms. Allocated memory is still 604.0MB. Free memory was 526.7MB in the beginning and 524.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 419.31ms. Allocated memory is still 604.0MB. Free memory was 524.9MB in the beginning and 511.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 115736.91ms. Allocated memory was 604.0MB in the beginning and 725.6MB in the end (delta: 121.6MB). Free memory was 510.6MB in the beginning and 316.5MB in the end (delta: 194.0MB). Peak memory consumption was 316.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 73 PlacesBefore, 19 PlacesAfterwards, 69 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 150, independent: 140, independent conditional: 0, independent unconditional: 140, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 89, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 150, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 89, unknown conditional: 0, unknown unconditional: 89] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 115.6s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 25 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 259 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1162 IncrementalHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 0 mSDtfsCounter, 1162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 143 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 107.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=5, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 109.6s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 43 QuantifiedInterpolants, 3617 SizeOfPredicates, 35 NumberOfNonLiveVariables, 840 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 15/141 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:41:13,900 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 0 Received shutdown request...