/usr/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 20:47:25,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:47:25,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:47:25,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 20:47:25,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 20:47:25,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 20:47:25,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 20:47:25,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 20:47:25,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 20:47:25,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 20:47:25,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 20:47:25,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 20:47:25,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:47:25,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:47:25,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:47:25,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:47:25,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:47:25,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:47:25,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:47:25,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:47:25,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:47:25,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:47:25,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:47:25,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:47:25,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 20:47:25,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 20:47:25,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 20:47:25,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 20:47:25,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 20:47:25,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 20:47:25,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 20:47:25,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 20:47:25,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 20:47:25,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 20:47:25,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 20:47:25,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 20:47:25,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 20:47:25,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 20:47:25,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:47:25,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:47:25,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:47:25,991 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-SemanticLbe.epf [2022-12-05 20:47:26,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:47:26,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:47:26,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:47:26,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:47:26,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:47:26,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:47:26,008 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:47:26,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:47:26,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:47:26,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:47:26,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:47:26,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:26,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:47:26,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:47:26,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:47:26,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:47:26,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:47:26,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:47:26,264 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:47:26,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-05 20:47:27,226 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:47:27,400 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:47:27,400 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-05 20:47:27,412 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c118b2e/fe99980fd78d495dbb0d30a5688cca61/FLAGe4f4ab2b7 [2022-12-05 20:47:27,420 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0c118b2e/fe99980fd78d495dbb0d30a5688cca61 [2022-12-05 20:47:27,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:47:27,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:47:27,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:27,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:47:27,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:47:27,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aecf5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27, skipping insertion in model container [2022-12-05 20:47:27,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:47:27,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:47:27,549 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-12-05 20:47:27,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:27,692 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:47:27,700 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-12-05 20:47:27,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:27,755 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:47:27,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27 WrapperNode [2022-12-05 20:47:27,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:27,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:27,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:47:27,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:47:27,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,821 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-12-05 20:47:27,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:27,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:47:27,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:47:27,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:47:27,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:47:27,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:47:27,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:47:27,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:47:27,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (1/1) ... [2022-12-05 20:47:27,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:27,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:27,866 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) [2022-12-05 20:47:27,879 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 [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-05 20:47:27,893 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:47:27,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:47:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:47:27,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:47:27,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:47:27,895 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:47:27,999 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:47:28,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:47:28,158 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:47:28,163 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:47:28,163 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-05 20:47:28,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:28 BoogieIcfgContainer [2022-12-05 20:47:28,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:47:28,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:47:28,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:47:28,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:47:28,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:47:27" (1/3) ... [2022-12-05 20:47:28,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cdc779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:28, skipping insertion in model container [2022-12-05 20:47:28,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:27" (2/3) ... [2022-12-05 20:47:28,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cdc779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:28, skipping insertion in model container [2022-12-05 20:47:28,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:28" (3/3) ... [2022-12-05 20:47:28,170 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-12-05 20:47:28,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:47:28,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-05 20:47:28,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:47:28,225 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:47:28,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 261 flow [2022-12-05 20:47:28,288 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2022-12-05 20:47:28,288 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:28,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-05 20:47:28,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 128 transitions, 261 flow [2022-12-05 20:47:28,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 127 transitions, 257 flow [2022-12-05 20:47:28,297 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:47:28,309 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 127 transitions, 257 flow [2022-12-05 20:47:28,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 257 flow [2022-12-05 20:47:28,334 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2022-12-05 20:47:28,334 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:28,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-12-05 20:47:28,337 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 127 transitions, 257 flow [2022-12-05 20:47:28,337 INFO L188 LiptonReduction]: Number of co-enabled transitions 3920 [2022-12-05 20:47:31,989 INFO L203 LiptonReduction]: Total number of compositions: 103 [2022-12-05 20:47:32,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:47:32,015 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;@b6ebc5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:47:32,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 20:47:32,026 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2022-12-05 20:47:32,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:32,027 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:32,027 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-05 20:47:32,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:32,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1915721193, now seen corresponding path program 1 times [2022-12-05 20:47:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360848637] [2022-12-05 20:47:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:32,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360848637] [2022-12-05 20:47:32,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360848637] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:32,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:32,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 20:47:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143523255] [2022-12-05 20:47:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:32,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:47:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:47:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:47:32,460 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:32,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-12-05 20:47:32,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:32,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:32,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:32,616 INFO L130 PetriNetUnfolder]: 216/379 cut-off events. [2022-12-05 20:47:32,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:32,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 379 events. 216/379 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1355 event pairs, 7 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 753. Up to 224 conditions per place. [2022-12-05 20:47:32,618 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 48 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2022-12-05 20:47:32,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 54 transitions, 217 flow [2022-12-05 20:47:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:47:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:47:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-12-05 20:47:32,626 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2022-12-05 20:47:32,627 INFO L175 Difference]: Start difference. First operand has 24 places, 26 transitions, 55 flow. Second operand 4 states and 63 transitions. [2022-12-05 20:47:32,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 54 transitions, 217 flow [2022-12-05 20:47:32,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 20:47:32,631 INFO L231 Difference]: Finished difference. Result has 27 places, 28 transitions, 82 flow [2022-12-05 20:47:32,632 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=27, PETRI_TRANSITIONS=28} [2022-12-05 20:47:32,634 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-12-05 20:47:32,634 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 28 transitions, 82 flow [2022-12-05 20:47:32,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-12-05 20:47:32,634 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:32,634 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:32,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:47:32,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash -742185088, now seen corresponding path program 1 times [2022-12-05 20:47:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:32,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804959950] [2022-12-05 20:47:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:32,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804959950] [2022-12-05 20:47:32,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804959950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:32,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:32,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:47:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617476792] [2022-12-05 20:47:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:47:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:47:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:47:32,676 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:32,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-05 20:47:32,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:32,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:32,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:32,785 INFO L130 PetriNetUnfolder]: 327/538 cut-off events. [2022-12-05 20:47:32,786 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2022-12-05 20:47:32,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 538 events. 327/538 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2014 event pairs, 29 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 1208. Up to 314 conditions per place. [2022-12-05 20:47:32,788 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 56 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2022-12-05 20:47:32,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 73 transitions, 339 flow [2022-12-05 20:47:32,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:47:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:47:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2022-12-05 20:47:32,790 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2022-12-05 20:47:32,790 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 82 flow. Second operand 5 states and 71 transitions. [2022-12-05 20:47:32,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 73 transitions, 339 flow [2022-12-05 20:47:32,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 73 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:47:32,792 INFO L231 Difference]: Finished difference. Result has 35 places, 43 transitions, 210 flow [2022-12-05 20:47:32,792 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=35, PETRI_TRANSITIONS=43} [2022-12-05 20:47:32,792 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2022-12-05 20:47:32,793 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 43 transitions, 210 flow [2022-12-05 20:47:32,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-12-05 20:47:32,793 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:32,793 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:32,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 20:47:32,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -387912173, now seen corresponding path program 1 times [2022-12-05 20:47:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:32,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743765677] [2022-12-05 20:47:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:32,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743765677] [2022-12-05 20:47:32,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743765677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:32,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:32,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:47:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598019219] [2022-12-05 20:47:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:32,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:47:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:47:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:47:32,958 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 26 [2022-12-05 20:47:32,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 43 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:47:32,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:32,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 26 [2022-12-05 20:47:32,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:33,064 INFO L130 PetriNetUnfolder]: 465/792 cut-off events. [2022-12-05 20:47:33,065 INFO L131 PetriNetUnfolder]: For 693/693 co-relation queries the response was YES. [2022-12-05 20:47:33,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2372 conditions, 792 events. 465/792 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3755 event pairs, 16 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 2356. Up to 478 conditions per place. [2022-12-05 20:47:33,068 INFO L137 encePairwiseOnDemand]: 19/26 looper letters, 69 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2022-12-05 20:47:33,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 78 transitions, 542 flow [2022-12-05 20:47:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:47:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:47:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2022-12-05 20:47:33,070 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2022-12-05 20:47:33,070 INFO L175 Difference]: Start difference. First operand has 35 places, 43 transitions, 210 flow. Second operand 4 states and 49 transitions. [2022-12-05 20:47:33,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 78 transitions, 542 flow [2022-12-05 20:47:33,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 78 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 20:47:33,074 INFO L231 Difference]: Finished difference. Result has 39 places, 47 transitions, 248 flow [2022-12-05 20:47:33,074 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=39, PETRI_TRANSITIONS=47} [2022-12-05 20:47:33,074 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2022-12-05 20:47:33,074 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 248 flow [2022-12-05 20:47:33,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:47:33,075 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:33,075 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:33,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 20:47:33,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:33,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1215038919, now seen corresponding path program 2 times [2022-12-05 20:47:33,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:33,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190888885] [2022-12-05 20:47:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:33,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:33,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:33,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190888885] [2022-12-05 20:47:33,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190888885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:33,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:33,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 20:47:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931360463] [2022-12-05 20:47:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:33,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 20:47:33,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:33,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 20:47:33,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-05 20:47:33,195 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 26 [2022-12-05 20:47:33,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:47:33,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:33,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 26 [2022-12-05 20:47:33,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:33,247 INFO L130 PetriNetUnfolder]: 92/201 cut-off events. [2022-12-05 20:47:33,247 INFO L131 PetriNetUnfolder]: For 227/235 co-relation queries the response was YES. [2022-12-05 20:47:33,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 201 events. 92/201 cut-off events. For 227/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 749 event pairs, 37 based on Foata normal form. 24/179 useless extension candidates. Maximal degree in co-relation 635. Up to 167 conditions per place. [2022-12-05 20:47:33,248 INFO L137 encePairwiseOnDemand]: 21/26 looper letters, 24 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2022-12-05 20:47:33,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 208 flow [2022-12-05 20:47:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 20:47:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 20:47:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-12-05 20:47:33,249 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.28846153846153844 [2022-12-05 20:47:33,249 INFO L175 Difference]: Start difference. First operand has 39 places, 47 transitions, 248 flow. Second operand 4 states and 30 transitions. [2022-12-05 20:47:33,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 208 flow [2022-12-05 20:47:33,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 160 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-12-05 20:47:33,250 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 119 flow [2022-12-05 20:47:33,250 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-12-05 20:47:33,251 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2022-12-05 20:47:33,251 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 119 flow [2022-12-05 20:47:33,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-12-05 20:47:33,251 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:33,251 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:33,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 20:47:33,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:33,252 INFO L85 PathProgramCache]: Analyzing trace with hash 931762495, now seen corresponding path program 1 times [2022-12-05 20:47:33,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:33,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541012588] [2022-12-05 20:47:33,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:33,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:33,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:33,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541012588] [2022-12-05 20:47:33,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541012588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:33,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:33,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 20:47:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198294058] [2022-12-05 20:47:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:33,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 20:47:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 20:47:33,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-05 20:47:33,499 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:33,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 119 flow. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-12-05 20:47:33,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:33,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:33,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:33,668 INFO L130 PetriNetUnfolder]: 125/280 cut-off events. [2022-12-05 20:47:33,668 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-12-05 20:47:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 280 events. 125/280 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1095 event pairs, 20 based on Foata normal form. 8/221 useless extension candidates. Maximal degree in co-relation 751. Up to 126 conditions per place. [2022-12-05 20:47:33,670 INFO L137 encePairwiseOnDemand]: 14/26 looper letters, 68 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2022-12-05 20:47:33,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 85 transitions, 471 flow [2022-12-05 20:47:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 20:47:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 20:47:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2022-12-05 20:47:33,673 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2022-12-05 20:47:33,673 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 119 flow. Second operand 8 states and 82 transitions. [2022-12-05 20:47:33,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 85 transitions, 471 flow [2022-12-05 20:47:33,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 85 transitions, 453 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 20:47:33,676 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 245 flow [2022-12-05 20:47:33,677 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=245, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2022-12-05 20:47:33,678 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2022-12-05 20:47:33,679 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 245 flow [2022-12-05 20:47:33,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2022-12-05 20:47:33,679 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:33,679 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 20:47:33,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1530985399, now seen corresponding path program 1 times [2022-12-05 20:47:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:33,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776699523] [2022-12-05 20:47:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:33,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:33,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776699523] [2022-12-05 20:47:33,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776699523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:33,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 20:47:33,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 20:47:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240701794] [2022-12-05 20:47:33,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:33,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 20:47:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 20:47:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-05 20:47:33,904 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:33,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-12-05 20:47:33,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:33,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:33,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:34,004 INFO L130 PetriNetUnfolder]: 86/206 cut-off events. [2022-12-05 20:47:34,005 INFO L131 PetriNetUnfolder]: For 247/247 co-relation queries the response was YES. [2022-12-05 20:47:34,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 206 events. 86/206 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 699 event pairs, 36 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 703. Up to 166 conditions per place. [2022-12-05 20:47:34,005 INFO L137 encePairwiseOnDemand]: 20/26 looper letters, 36 selfloop transitions, 2 changer transitions 13/52 dead transitions. [2022-12-05 20:47:34,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 367 flow [2022-12-05 20:47:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 20:47:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 20:47:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2022-12-05 20:47:34,007 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.33076923076923076 [2022-12-05 20:47:34,007 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 245 flow. Second operand 5 states and 43 transitions. [2022-12-05 20:47:34,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 367 flow [2022-12-05 20:47:34,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 353 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-05 20:47:34,009 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 208 flow [2022-12-05 20:47:34,009 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2022-12-05 20:47:34,011 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 24 predicate places. [2022-12-05 20:47:34,011 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 208 flow [2022-12-05 20:47:34,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-12-05 20:47:34,011 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:34,011 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:34,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 20:47:34,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1227806398, now seen corresponding path program 2 times [2022-12-05 20:47:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:34,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675193091] [2022-12-05 20:47:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675193091] [2022-12-05 20:47:34,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675193091] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:47:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645842836] [2022-12-05 20:47:34,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 20:47:34,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:47:34,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:34,446 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) [2022-12-05 20:47:34,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 20:47:34,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 20:47:34,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:47:34,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-05 20:47:34,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:47:34,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-05 20:47:34,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:47:34,612 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 [2022-12-05 20:47:34,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-05 20:47:34,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-05 20:47:34,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-05 20:47:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:34,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 20:47:34,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645842836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 20:47:34,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 20:47:34,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2022-12-05 20:47:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260598687] [2022-12-05 20:47:34,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 20:47:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 20:47:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 20:47:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-05 20:47:34,791 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:34,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 208 flow. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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) [2022-12-05 20:47:34,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:34,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:35,058 INFO L130 PetriNetUnfolder]: 86/225 cut-off events. [2022-12-05 20:47:35,058 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-12-05 20:47:35,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 225 events. 86/225 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 855 event pairs, 16 based on Foata normal form. 8/212 useless extension candidates. Maximal degree in co-relation 756. Up to 72 conditions per place. [2022-12-05 20:47:35,059 INFO L137 encePairwiseOnDemand]: 16/26 looper letters, 57 selfloop transitions, 18 changer transitions 1/77 dead transitions. [2022-12-05 20:47:35,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 514 flow [2022-12-05 20:47:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 20:47:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 20:47:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 84 transitions. [2022-12-05 20:47:35,061 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2692307692307692 [2022-12-05 20:47:35,061 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 208 flow. Second operand 12 states and 84 transitions. [2022-12-05 20:47:35,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 514 flow [2022-12-05 20:47:35,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 490 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-05 20:47:35,063 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 286 flow [2022-12-05 20:47:35,063 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=286, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2022-12-05 20:47:35,064 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2022-12-05 20:47:35,066 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 286 flow [2022-12-05 20:47:35,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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) [2022-12-05 20:47:35,079 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:35,079 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:35,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 20:47:35,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:47:35,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:35,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2048279501, now seen corresponding path program 1 times [2022-12-05 20:47:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:35,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285097640] [2022-12-05 20:47:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:47:36,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:36,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285097640] [2022-12-05 20:47:36,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285097640] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:47:36,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149964977] [2022-12-05 20:47:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:36,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:47:36,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:36,096 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) [2022-12-05 20:47:36,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 20:47:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:36,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-05 20:47:36,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:47:36,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-05 20:47:36,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:47:36,227 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 [2022-12-05 20:47:36,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-05 20:47:36,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-12-05 20:47:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:36,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:47:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:36,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149964977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:47:36,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:47:36,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 33 [2022-12-05 20:47:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835432895] [2022-12-05 20:47:36,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:47:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-05 20:47:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-05 20:47:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2022-12-05 20:47:36,864 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:36,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 286 flow. Second operand has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 states have internal predecessors, (89), 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) [2022-12-05 20:47:36,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:36,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:36,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:39,061 INFO L130 PetriNetUnfolder]: 273/655 cut-off events. [2022-12-05 20:47:39,061 INFO L131 PetriNetUnfolder]: For 1135/1135 co-relation queries the response was YES. [2022-12-05 20:47:39,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 655 events. 273/655 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2565 event pairs, 38 based on Foata normal form. 3/574 useless extension candidates. Maximal degree in co-relation 2420. Up to 146 conditions per place. [2022-12-05 20:47:39,064 INFO L137 encePairwiseOnDemand]: 13/26 looper letters, 110 selfloop transitions, 89 changer transitions 61/261 dead transitions. [2022-12-05 20:47:39,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 261 transitions, 1834 flow [2022-12-05 20:47:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-05 20:47:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-05 20:47:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 300 transitions. [2022-12-05 20:47:39,070 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.26833631484794274 [2022-12-05 20:47:39,070 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 286 flow. Second operand 43 states and 300 transitions. [2022-12-05 20:47:39,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 261 transitions, 1834 flow [2022-12-05 20:47:39,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 261 transitions, 1790 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-12-05 20:47:39,076 INFO L231 Difference]: Finished difference. Result has 110 places, 124 transitions, 1157 flow [2022-12-05 20:47:39,076 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1157, PETRI_PLACES=110, PETRI_TRANSITIONS=124} [2022-12-05 20:47:39,077 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 86 predicate places. [2022-12-05 20:47:39,077 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 124 transitions, 1157 flow [2022-12-05 20:47:39,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 states have internal predecessors, (89), 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) [2022-12-05 20:47:39,077 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:39,077 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 20:47:39,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 20:47:39,277 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,SelfDestructingSolverStorable7 [2022-12-05 20:47:39,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-05 20:47:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2054298068, now seen corresponding path program 2 times [2022-12-05 20:47:39,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:39,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193284808] [2022-12-05 20:47:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:39,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 20:47:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 20:47:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 20:47:39,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193284808] [2022-12-05 20:47:39,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193284808] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 20:47:39,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897671270] [2022-12-05 20:47:39,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 20:47:39,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:47:39,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:39,761 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) [2022-12-05 20:47:39,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 20:47:39,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 20:47:39,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 20:47:39,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-05 20:47:39,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 20:47:39,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-12-05 20:47:39,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 20:47:39,876 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 [2022-12-05 20:47:39,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-05 20:47:40,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-05 20:47:40,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-12-05 20:47:40,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-05 20:47:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:40,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 20:47:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 20:47:40,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897671270] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 20:47:40,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 20:47:40,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 31 [2022-12-05 20:47:40,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906226608] [2022-12-05 20:47:40,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 20:47:40,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-05 20:47:40,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 20:47:40,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-05 20:47:40,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=869, Unknown=0, NotChecked=0, Total=1056 [2022-12-05 20:47:40,414 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 26 [2022-12-05 20:47:40,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 124 transitions, 1157 flow. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 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) [2022-12-05 20:47:40,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 20:47:40,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 26 [2022-12-05 20:47:40,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 20:47:41,836 INFO L130 PetriNetUnfolder]: 353/917 cut-off events. [2022-12-05 20:47:41,836 INFO L131 PetriNetUnfolder]: For 13003/13003 co-relation queries the response was YES. [2022-12-05 20:47:41,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5343 conditions, 917 events. 353/917 cut-off events. For 13003/13003 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3981 event pairs, 70 based on Foata normal form. 24/920 useless extension candidates. Maximal degree in co-relation 5300. Up to 221 conditions per place. [2022-12-05 20:47:41,841 INFO L137 encePairwiseOnDemand]: 14/26 looper letters, 0 selfloop transitions, 0 changer transitions 254/254 dead transitions. [2022-12-05 20:47:41,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 254 transitions, 3032 flow [2022-12-05 20:47:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-05 20:47:41,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-05 20:47:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 162 transitions. [2022-12-05 20:47:41,842 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.21485411140583555 [2022-12-05 20:47:41,842 INFO L175 Difference]: Start difference. First operand has 110 places, 124 transitions, 1157 flow. Second operand 29 states and 162 transitions. [2022-12-05 20:47:41,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 254 transitions, 3032 flow [2022-12-05 20:47:41,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 254 transitions, 2487 flow, removed 267 selfloop flow, removed 8 redundant places. [2022-12-05 20:47:41,869 INFO L231 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2022-12-05 20:47:41,870 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2022-12-05 20:47:41,870 INFO L294 CegarLoopForPetriNet]: 24 programPoint places, 97 predicate places. [2022-12-05 20:47:41,870 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2022-12-05 20:47:41,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 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) [2022-12-05 20:47:41,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-05 20:47:41,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-05 20:47:41,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-05 20:47:41,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-05 20:47:41,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-05 20:47:41,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 20:47:42,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 20:47:42,078 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1] [2022-12-05 20:47:42,081 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:47:42,081 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:47:42,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:47:42 BasicIcfg [2022-12-05 20:47:42,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:47:42,084 INFO L158 Benchmark]: Toolchain (without parser) took 14661.04ms. Allocated memory was 186.6MB in the beginning and 368.1MB in the end (delta: 181.4MB). Free memory was 161.9MB in the beginning and 162.3MB in the end (delta: -362.9kB). Peak memory consumption was 181.1MB. Max. memory is 8.0GB. [2022-12-05 20:47:42,084 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 186.6MB. Free memory is still 163.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:47:42,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.81ms. Allocated memory is still 186.6MB. Free memory was 161.9MB in the beginning and 142.5MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 20:47:42,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.36ms. Allocated memory is still 186.6MB. Free memory was 142.5MB in the beginning and 139.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:47:42,084 INFO L158 Benchmark]: Boogie Preprocessor took 21.46ms. Allocated memory is still 186.6MB. Free memory was 139.9MB in the beginning and 138.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:47:42,085 INFO L158 Benchmark]: RCFGBuilder took 321.31ms. Allocated memory is still 186.6MB. Free memory was 138.3MB in the beginning and 122.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-05 20:47:42,085 INFO L158 Benchmark]: TraceAbstraction took 13917.59ms. Allocated memory was 186.6MB in the beginning and 368.1MB in the end (delta: 181.4MB). Free memory was 122.1MB in the beginning and 162.3MB in the end (delta: -40.2MB). Peak memory consumption was 141.2MB. Max. memory is 8.0GB. [2022-12-05 20:47:42,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 186.6MB. Free memory is still 163.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 333.81ms. Allocated memory is still 186.6MB. Free memory was 161.9MB in the beginning and 142.5MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.36ms. Allocated memory is still 186.6MB. Free memory was 142.5MB in the beginning and 139.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.46ms. Allocated memory is still 186.6MB. Free memory was 139.9MB in the beginning and 138.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 321.31ms. Allocated memory is still 186.6MB. Free memory was 138.3MB in the beginning and 122.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 13917.59ms. Allocated memory was 186.6MB in the beginning and 368.1MB in the end (delta: 181.4MB). Free memory was 122.1MB in the beginning and 162.3MB in the end (delta: -40.2MB). Peak memory consumption was 141.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 121 PlacesBefore, 24 PlacesAfterwards, 127 TransitionsBefore, 26 TransitionsAfterwards, 3920 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 65 ConcurrentYvCompositions, 4 ChoiceCompositions, 103 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2563, independent: 2505, independent conditional: 2505, independent unconditional: 0, dependent: 58, dependent conditional: 58, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2563, independent: 2505, independent conditional: 0, independent unconditional: 2505, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2563, independent: 2505, independent conditional: 0, independent unconditional: 2505, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2563, independent: 2505, independent conditional: 0, independent unconditional: 2505, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2274, independent: 2239, independent conditional: 0, independent unconditional: 2239, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2274, independent: 2237, independent conditional: 0, independent unconditional: 2237, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 84, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2563, independent: 266, independent conditional: 0, independent unconditional: 266, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 2274, unknown conditional: 0, unknown unconditional: 2274] , Statistics on independence cache: Total cache size (in pairs): 4035, Positive cache size: 4000, Positive conditional cache size: 0, Positive unconditional cache size: 4000, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 170 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 879 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 879 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3354 IncrementalHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 4 mSDtfsCounter, 3354 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred in iteration=8, InterpolantAutomatonStates: 114, 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, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 209 ConstructedInterpolants, 11 QuantifiedInterpolants, 3121 SizeOfPredicates, 67 NumberOfNonLiveVariables, 651 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 24/46 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 20:47:42,104 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...