/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 -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 17:30:20,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:30:20,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:30:20,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:30:20,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:30:20,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:30:20,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:30:20,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:30:20,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:30:20,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:30:20,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:30:20,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:30:20,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:30:20,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:30:20,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:30:20,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:30:20,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:30:20,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:30:20,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:30:20,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:30:20,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:30:20,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:30:20,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:30:20,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:30:20,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 17:30:20,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 17:30:20,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 17:30:20,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 17:30:20,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 17:30:20,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 17:30:20,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:30:20,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:30:20,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:30:20,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:30:20,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:30:20,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:30:20,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:30:20,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:30:20,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:30:20,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:30:20,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:30:20,374 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 17:30:20,396 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:30:20,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:30:20,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:30:20,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:30:20,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:30:20,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:30:20,406 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:30:20,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:30:20,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:30:20,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:30:20,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:30:20,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:30:20,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:30:20,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:30:20,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:30:20,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:30:20,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:30:20,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:30:20,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:30:20,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:30:20,723 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:30:20,724 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:30:20,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-01-27 17:30:22,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:30:22,551 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:30:22,552 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-01-27 17:30:22,582 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b32db93fb/cecdd4b4d9ba4d71b7dfdb018facab43/FLAGaafa626e3 [2023-01-27 17:30:22,593 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b32db93fb/cecdd4b4d9ba4d71b7dfdb018facab43 [2023-01-27 17:30:22,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:30:22,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:30:22,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:30:22,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:30:22,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:30:22,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:30:22" (1/1) ... [2023-01-27 17:30:22,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db8769e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:22, skipping insertion in model container [2023-01-27 17:30:22,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:30:22" (1/1) ... [2023-01-27 17:30:22,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:30:22,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:30:23,236 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 17:30:23,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:30:23,276 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:30:23,342 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 17:30:23,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:30:23,424 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:30:23,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23 WrapperNode [2023-01-27 17:30:23,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:30:23,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:30:23,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:30:23,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:30:23,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,494 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-27 17:30:23,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:30:23,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:30:23,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:30:23,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:30:23,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,524 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:30:23,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:30:23,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:30:23,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:30:23,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (1/1) ... [2023-01-27 17:30:23,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:30:23,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:23,618 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 17:30:23,643 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 17:30:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:30:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:30:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-01-27 17:30:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 17:30:23,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 17:30:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 17:30:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 17:30:23,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 17:30:23,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:30:23,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 17:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:30:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:30:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:30:23,664 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 17:30:23,904 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:30:23,905 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:30:24,163 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:30:24,168 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:30:24,168 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-01-27 17:30:24,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:30:24 BoogieIcfgContainer [2023-01-27 17:30:24,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:30:24,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:30:24,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:30:24,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:30:24,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:30:22" (1/3) ... [2023-01-27 17:30:24,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b78df11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:30:24, skipping insertion in model container [2023-01-27 17:30:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:23" (2/3) ... [2023-01-27 17:30:24,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b78df11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:30:24, skipping insertion in model container [2023-01-27 17:30:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:30:24" (3/3) ... [2023-01-27 17:30:24,192 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-01-27 17:30:24,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:30:24,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 17:30:24,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:30:24,320 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 17:30:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 180 flow [2023-01-27 17:30:24,431 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-01-27 17:30:24,431 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:24,440 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 17:30:24,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 180 flow [2023-01-27 17:30:24,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2023-01-27 17:30:24,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:30:24,485 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 150 flow [2023-01-27 17:30:24,487 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 150 flow [2023-01-27 17:30:24,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 150 flow [2023-01-27 17:30:24,528 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2023-01-27 17:30:24,528 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:24,528 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 17:30:24,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-01-27 17:30:27,435 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-01-27 17:30:27,436 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-01-27 17:30:27,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:30:27,456 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;@798e32ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:30:27,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 17:30:27,461 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-01-27 17:30:27,461 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:27,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:27,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:27,463 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 17:30:27,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1440544796, now seen corresponding path program 1 times [2023-01-27 17:30:27,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:27,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506286840] [2023-01-27 17:30:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:27,745 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 17:30:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506286840] [2023-01-27 17:30:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506286840] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:27,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:27,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:30:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621807460] [2023-01-27 17:30:27,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:27,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:27,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:27,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 142 [2023-01-27 17:30:27,806 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 17:30:27,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:27,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 142 [2023-01-27 17:30:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:27,858 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2023-01-27 17:30:27,858 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:27,858 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 17:30:27,859 INFO L137 encePairwiseOnDemand]: 140/142 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-01-27 17:30:27,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-01-27 17:30:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2023-01-27 17:30:27,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2023-01-27 17:30:27,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2023-01-27 17:30:27,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2023-01-27 17:30:27,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:27,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2023-01-27 17:30:27,880 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 17:30:27,883 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 17:30:27,883 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 17:30:27,884 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 222 transitions. [2023-01-27 17:30:27,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-01-27 17:30:27,899 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 17:30:27,900 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-01-27 17:30:27,910 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 17:30:27,912 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-01-27 17:30:27,912 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-01-27 17:30:27,912 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 17:30:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:27,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:30:27,922 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 17:30:27,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1703930448, now seen corresponding path program 1 times [2023-01-27 17:30:27,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:27,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835357879] [2023-01-27 17:30:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:28,645 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 17:30:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835357879] [2023-01-27 17:30:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835357879] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:28,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:28,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 17:30:28,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282976543] [2023-01-27 17:30:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 17:30:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 17:30:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 17:30:28,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 142 [2023-01-27 17:30:28,672 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 17:30:28,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:28,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 142 [2023-01-27 17:30:28,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:28,780 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-01-27 17:30:28,780 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 17:30:28,781 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 17:30:28,781 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-01-27 17:30:28,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-01-27 17:30:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:30:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:30:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2023-01-27 17:30:28,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.323943661971831 [2023-01-27 17:30:28,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 230 transitions. [2023-01-27 17:30:28,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 230 transitions. [2023-01-27 17:30:28,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:28,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 230 transitions. [2023-01-27 17:30:28,791 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 17:30:28,793 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 17:30:28,793 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 17:30:28,793 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 230 transitions. [2023-01-27 17:30:28,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-01-27 17:30:28,793 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 17:30:28,794 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-01-27 17:30:28,794 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 17:30:28,795 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-27 17:30:28,795 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-01-27 17:30:28,795 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 17:30:28,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:28,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:28,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:30:28,796 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 17:30:28,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1951074546, now seen corresponding path program 1 times [2023-01-27 17:30:28,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036101677] [2023-01-27 17:30:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:29,225 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 17:30:29,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:29,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036101677] [2023-01-27 17:30:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036101677] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:30:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948951736] [2023-01-27 17:30:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:29,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:30:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:29,253 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 17:30:29,285 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 17:30:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:29,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2023-01-27 17:30:29,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:30:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:29,629 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 17:30:29,681 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 17:30:29,682 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 17:30:29,789 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 17:30:29,926 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 17:30:29,927 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 17:30:29,984 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:29,985 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 17:30:30,029 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 17:30:30,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:30:30,204 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 17:30:30,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948951736] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:30:30,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:30:30,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-01-27 17:30:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395917958] [2023-01-27 17:30:30,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:30:30,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 17:30:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 17:30:30,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-01-27 17:30:30,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 142 [2023-01-27 17:30:30,209 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 17:30:30,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:30,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 142 [2023-01-27 17:30:30,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:30,554 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2023-01-27 17:30:30,554 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-27 17:30:30,555 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 17:30:30,555 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-01-27 17:30:30,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 163 flow [2023-01-27 17:30:30,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 366 transitions. [2023-01-27 17:30:30,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2863849765258216 [2023-01-27 17:30:30,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 366 transitions. [2023-01-27 17:30:30,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 366 transitions. [2023-01-27 17:30:30,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:30,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 366 transitions. [2023-01-27 17:30:30,560 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 17:30:30,562 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 17:30:30,563 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 17:30:30,563 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 9 states and 366 transitions. [2023-01-27 17:30:30,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 163 flow [2023-01-27 17:30:30,564 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 17:30:30,564 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 98 flow [2023-01-27 17:30:30,564 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 17:30:30,565 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-01-27 17:30:30,565 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 98 flow [2023-01-27 17:30:30,566 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 17:30:30,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:30,566 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:30,593 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 17:30:30,771 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 17:30:30,771 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 17:30:30,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1171585968, now seen corresponding path program 2 times [2023-01-27 17:30:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026741997] [2023-01-27 17:30:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:31,466 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 17:30:31,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026741997] [2023-01-27 17:30:31,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026741997] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:30:31,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59938669] [2023-01-27 17:30:31,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 17:30:31,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:30:31,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:31,484 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 17:30:31,556 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 17:30:31,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 17:30:31,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:30:31,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 17:30:31,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:30:31,712 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-01-27 17:30:31,712 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 17:30:31,742 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 17:30:31,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:31,922 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 17:30:31,922 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 17:30:31,985 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 17:30:32,055 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 17:30:32,103 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 17:30:32,148 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 17:30:32,196 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 17:30:32,236 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 17:30:32,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:30:32,301 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 17:30:32,312 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 17:30:32,550 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 17:30:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59938669] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:30:32,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:30:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-01-27 17:30:32,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306016609] [2023-01-27 17:30:32,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:30:32,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 17:30:32,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 17:30:32,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=8, NotChecked=94, Total=702 [2023-01-27 17:30:32,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-27 17:30:32,555 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 17:30:32,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:32,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-27 17:30:32,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:33,307 INFO L130 PetriNetUnfolder]: 14/44 cut-off events. [2023-01-27 17:30:33,307 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-27 17:30:33,308 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 17:30:33,308 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 17 selfloop transitions, 9 changer transitions 2/28 dead transitions. [2023-01-27 17:30:33,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 186 flow [2023-01-27 17:30:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:30:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:30:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 317 transitions. [2023-01-27 17:30:33,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2790492957746479 [2023-01-27 17:30:33,311 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 317 transitions. [2023-01-27 17:30:33,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 317 transitions. [2023-01-27 17:30:33,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:33,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 317 transitions. [2023-01-27 17:30:33,312 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 17:30:33,313 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 17:30:33,313 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 17:30:33,313 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 98 flow. Second operand 8 states and 317 transitions. [2023-01-27 17:30:33,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 186 flow [2023-01-27 17:30:33,314 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 17:30:33,315 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 108 flow [2023-01-27 17:30:33,315 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 17:30:33,316 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2023-01-27 17:30:33,316 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 108 flow [2023-01-27 17:30:33,317 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 17:30:33,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:33,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:33,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 17:30:33,521 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 17:30:33,522 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 17:30:33,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1959732808, now seen corresponding path program 3 times [2023-01-27 17:30:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:33,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371642882] [2023-01-27 17:30:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:34,152 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 17:30:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371642882] [2023-01-27 17:30:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371642882] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:30:34,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363063456] [2023-01-27 17:30:34,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 17:30:34,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:30:34,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:34,154 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 17:30:34,158 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 17:30:34,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 17:30:34,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:30:34,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-27 17:30:34,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:30:34,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:34,341 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2023-01-27 17:30:34,341 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 17:30:34,362 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 17:30:34,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:34,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:34,581 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-01-27 17:30:34,585 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 17:30:34,663 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 17:30:34,766 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 17:30:34,850 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 17:30:34,903 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 17:30:34,957 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 17:30:35,014 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 17:30:35,063 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 17:30:35,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:30:35,102 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 17:30:35,107 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 17:30:35,111 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 17:30:35,118 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 17:30:35,121 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 17:30:35,274 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 17:30:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363063456] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:30:35,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:30:35,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-01-27 17:30:35,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787701566] [2023-01-27 17:30:35,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:30:35,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 17:30:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:35,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 17:30:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=543, Unknown=6, NotChecked=250, Total=870 [2023-01-27 17:30:35,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-27 17:30:35,278 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 17:30:35,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:35,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-27 17:30:35,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:36,767 INFO L130 PetriNetUnfolder]: 17/57 cut-off events. [2023-01-27 17:30:36,767 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-01-27 17:30:36,767 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 17:30:36,768 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 19 changer transitions 6/42 dead transitions. [2023-01-27 17:30:36,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 310 flow [2023-01-27 17:30:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 17:30:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 17:30:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 620 transitions. [2023-01-27 17:30:36,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.272887323943662 [2023-01-27 17:30:36,771 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 620 transitions. [2023-01-27 17:30:36,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 620 transitions. [2023-01-27 17:30:36,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:36,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 620 transitions. [2023-01-27 17:30:36,772 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 17:30:36,774 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 17:30:36,775 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 17:30:36,775 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 108 flow. Second operand 16 states and 620 transitions. [2023-01-27 17:30:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 310 flow [2023-01-27 17:30:36,779 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 17:30:36,779 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 202 flow [2023-01-27 17:30:36,779 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 17:30:36,781 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 27 predicate places. [2023-01-27 17:30:36,781 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 202 flow [2023-01-27 17:30:36,781 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 17:30:36,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:36,782 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:36,792 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 17:30:36,987 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 17:30:36,987 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 17:30:36,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -622481072, now seen corresponding path program 4 times [2023-01-27 17:30:36,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:36,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138505233] [2023-01-27 17:30:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:36,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:37,749 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 17:30:37,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138505233] [2023-01-27 17:30:37,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138505233] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:30:37,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538219439] [2023-01-27 17:30:37,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 17:30:37,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:30:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:37,751 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 17:30:37,753 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 17:30:37,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 17:30:37,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 17:30:37,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-27 17:30:37,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:30:37,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:37,955 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 17:30:37,980 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-27 17:30:37,981 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 17:30:38,038 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 17:30:38,141 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 17:30:38,142 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 17:30:38,195 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:38,196 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 17:30:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:38,248 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:38,249 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 17:30:38,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:38,312 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:38,312 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 17:30:38,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:38,382 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:38,382 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 17:30:38,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:38,439 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:38,439 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 17:30:38,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 17:30:38,498 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 17:30:38,499 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 17:30:38,537 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 17:30:38,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:30:44,723 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_236 Int) (v_ArrVal_234 Int) (v_ArrVal_231 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_69| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_69| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| 1)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_231) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_234) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_69| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_236)) c_~v~0.base) c_~v~0.offset)))) is different from false [2023-01-27 17:31:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 6 times theorem prover too weak. 0 trivial. 6 not checked. [2023-01-27 17:31:54,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538219439] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:31:54,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:31:54,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-01-27 17:31:54,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331502547] [2023-01-27 17:31:54,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:31:54,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-27 17:31:54,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:31:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-27 17:31:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=811, Unknown=34, NotChecked=60, Total=1056 [2023-01-27 17:31:54,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-01-27 17:31:54,401 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 17:31:54,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:31:54,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-01-27 17:31:54,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:32:07,621 INFO L130 PetriNetUnfolder]: 12/49 cut-off events. [2023-01-27 17:32:07,621 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 17:32:07,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 49 events. 12/49 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 1 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2023-01-27 17:32:07,622 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-01-27 17:32:07,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 36 transitions, 301 flow [2023-01-27 17:32:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 17:32:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 17:32:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 611 transitions. [2023-01-27 17:32:07,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2689260563380282 [2023-01-27 17:32:07,624 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 611 transitions. [2023-01-27 17:32:07,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 611 transitions. [2023-01-27 17:32:07,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:32:07,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 611 transitions. [2023-01-27 17:32:07,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 38.1875) internal successors, (611), 16 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 17:32:07,628 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 17:32:07,628 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 17:32:07,628 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 202 flow. Second operand 16 states and 611 transitions. [2023-01-27 17:32:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 36 transitions, 301 flow [2023-01-27 17:32:07,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 36 transitions, 193 flow, removed 25 selfloop flow, removed 14 redundant places. [2023-01-27 17:32:07,629 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-01-27 17:32:07,630 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=16, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-01-27 17:32:07,630 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 27 predicate places. [2023-01-27 17:32:07,630 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-01-27 17:32:07,631 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 17:32:07,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 17:32:07,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 17:32:07,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 17:32:07,695 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 17:32:07,872 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 17:32:07,873 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-01-27 17:32:07,875 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 17:32:07,875 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 17:32:07,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 05:32:07 BasicIcfg [2023-01-27 17:32:07,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 17:32:07,877 INFO L158 Benchmark]: Toolchain (without parser) took 105281.17ms. Allocated memory was 436.2MB in the beginning and 629.1MB in the end (delta: 192.9MB). Free memory was 383.0MB in the beginning and 383.9MB in the end (delta: -844.5kB). Peak memory consumption was 194.5MB. Max. memory is 16.0GB. [2023-01-27 17:32:07,877 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 264.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 17:32:07,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 826.73ms. Allocated memory is still 436.2MB. Free memory was 382.7MB in the beginning and 350.6MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-27 17:32:07,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.49ms. Allocated memory is still 436.2MB. Free memory was 350.6MB in the beginning and 348.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:32:07,878 INFO L158 Benchmark]: Boogie Preprocessor took 30.86ms. Allocated memory is still 436.2MB. Free memory was 348.2MB in the beginning and 346.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:32:07,878 INFO L158 Benchmark]: RCFGBuilder took 642.71ms. Allocated memory is still 436.2MB. Free memory was 346.5MB in the beginning and 394.9MB in the end (delta: -48.4MB). Peak memory consumption was 14.5MB. Max. memory is 16.0GB. [2023-01-27 17:32:07,878 INFO L158 Benchmark]: TraceAbstraction took 103706.68ms. Allocated memory was 436.2MB in the beginning and 629.1MB in the end (delta: 192.9MB). Free memory was 394.0MB in the beginning and 383.9MB in the end (delta: 10.2MB). Peak memory consumption was 203.1MB. Max. memory is 16.0GB. [2023-01-27 17:32:07,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 264.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 826.73ms. Allocated memory is still 436.2MB. Free memory was 382.7MB in the beginning and 350.6MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 69.49ms. Allocated memory is still 436.2MB. Free memory was 350.6MB in the beginning and 348.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.86ms. Allocated memory is still 436.2MB. Free memory was 348.2MB in the beginning and 346.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 642.71ms. Allocated memory is still 436.2MB. Free memory was 346.5MB in the beginning and 394.9MB in the end (delta: -48.4MB). Peak memory consumption was 14.5MB. Max. memory is 16.0GB. * TraceAbstraction took 103706.68ms. Allocated memory was 436.2MB in the beginning and 629.1MB in the end (delta: 192.9MB). Free memory was 394.0MB in the beginning and 383.9MB in the end (delta: 10.2MB). Peak memory consumption was 203.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 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: 103.5s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 25 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 279 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1162 IncrementalHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 0 mSDtfsCounter, 1162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 148 ConstructedPredicates, 8 IntricatePredicates, 6 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 91.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=5, InterpolantAutomatonStates: 57, 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, 0.4s SatisfiabilityAnalysisTime, 82.3s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 43 QuantifiedInterpolants, 3617 SizeOfPredicates, 35 NumberOfNonLiveVariables, 840 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 14/141 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 17:32:07,939 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...