/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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:57:15,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:57:15,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:57:15,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:57:15,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:57:15,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:57:15,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:57:15,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:57:15,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:57:15,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:57:15,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:57:15,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:57:15,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:57:15,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:57:15,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:57:15,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:57:15,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:57:15,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:57:16,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:57:16,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:57:16,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:57:16,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:57:16,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:57:16,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:57:16,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:57:16,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:57:16,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:57:16,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:57:16,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:57:16,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 16:57:16,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 16:57:16,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 16:57:16,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 16:57:16,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 16:57:16,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 16:57:16,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 16:57:16,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 16:57:16,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 16:57:16,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:57:16,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:57:16,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:57:16,025 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-NoLbe.epf [2022-12-06 16:57:16,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:57:16,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:57:16,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:57:16,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:57:16,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:57:16,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:57:16,057 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:57:16,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:57:16,058 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:57:16,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:57:16,059 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:57:16,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:57:16,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:57:16,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:57:16,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:57:16,061 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:57:16,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:57:16,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:57:16,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:57:16,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:57:16,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:57:16,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:57:16,372 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:57:16,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-12-06 16:57:17,387 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:57:17,572 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:57:17,572 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-12-06 16:57:17,597 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074ee1b80/a78c3f37e7894ec787c4011daa96ca27/FLAG86556e9b4 [2022-12-06 16:57:17,608 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/074ee1b80/a78c3f37e7894ec787c4011daa96ca27 [2022-12-06 16:57:17,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:57:17,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:57:17,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:57:17,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:57:17,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:57:17,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:57:17" (1/1) ... [2022-12-06 16:57:17,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492cedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:17, skipping insertion in model container [2022-12-06 16:57:17,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:57:17" (1/1) ... [2022-12-06 16:57:17,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:57:17,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:57:17,784 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_24-multiple-protecting_true.i[1096,1109] [2022-12-06 16:57:17,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:57:17,943 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:57:17,953 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_24-multiple-protecting_true.i[1096,1109] [2022-12-06 16:57:17,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:57:18,019 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:57:18,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18 WrapperNode [2022-12-06 16:57:18,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:57:18,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:57:18,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:57:18,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:57:18,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,076 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-12-06 16:57:18,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:57:18,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:57:18,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:57:18,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:57:18,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:57:18,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:57:18,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:57:18,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:57:18,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (1/1) ... [2022-12-06 16:57:18,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:57:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:57:18,161 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) [2022-12-06 16:57:18,198 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 [2022-12-06 16:57:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 16:57:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:57:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-06 16:57:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:57:18,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:57:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-06 16:57:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-06 16:57:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:57:18,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:57:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:57:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:57:18,214 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:57:18,342 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:57:18,344 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:57:18,551 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:57:18,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:57:18,557 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:57:18,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:57:18 BoogieIcfgContainer [2022-12-06 16:57:18,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:57:18,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:57:18,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:57:18,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:57:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:57:17" (1/3) ... [2022-12-06 16:57:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df417b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:57:18, skipping insertion in model container [2022-12-06 16:57:18,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:18" (2/3) ... [2022-12-06 16:57:18,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df417b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:57:18, skipping insertion in model container [2022-12-06 16:57:18,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:57:18" (3/3) ... [2022-12-06 16:57:18,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2022-12-06 16:57:18,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:57:18,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-06 16:57:18,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:57:18,667 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-06 16:57:18,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 131 transitions, 270 flow [2022-12-06 16:57:18,756 INFO L130 PetriNetUnfolder]: 4/130 cut-off events. [2022-12-06 16:57:18,756 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:57:18,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 4/130 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-06 16:57:18,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 131 transitions, 270 flow [2022-12-06 16:57:18,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 117 transitions, 237 flow [2022-12-06 16:57:18,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:57:18,786 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;@2fd626ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:57:18,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-06 16:57:18,802 INFO L130 PetriNetUnfolder]: 0/59 cut-off events. [2022-12-06 16:57:18,802 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:57:18,802 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:18,803 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:18,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -902533474, now seen corresponding path program 1 times [2022-12-06 16:57:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579320002] [2022-12-06 16:57:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:19,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579320002] [2022-12-06 16:57:19,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579320002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:19,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:19,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:57:19,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357168508] [2022-12-06 16:57:19,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:19,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:57:19,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:57:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:57:19,267 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2022-12-06 16:57:19,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 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) [2022-12-06 16:57:19,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:19,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2022-12-06 16:57:19,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:19,510 INFO L130 PetriNetUnfolder]: 89/691 cut-off events. [2022-12-06 16:57:19,510 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:57:19,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 691 events. 89/691 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4043 event pairs, 21 based on Foata normal form. 16/695 useless extension candidates. Maximal degree in co-relation 869. Up to 72 conditions per place. [2022-12-06 16:57:19,517 INFO L137 encePairwiseOnDemand]: 110/131 looper letters, 35 selfloop transitions, 23 changer transitions 5/149 dead transitions. [2022-12-06 16:57:19,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 149 transitions, 427 flow [2022-12-06 16:57:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:57:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:57:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 937 transitions. [2022-12-06 16:57:19,533 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7947413061916879 [2022-12-06 16:57:19,536 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 5 predicate places. [2022-12-06 16:57:19,536 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 149 transitions, 427 flow [2022-12-06 16:57:19,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 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) [2022-12-06 16:57:19,536 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:19,537 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:19,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:57:19,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1300246219, now seen corresponding path program 1 times [2022-12-06 16:57:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:19,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684403954] [2022-12-06 16:57:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:19,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684403954] [2022-12-06 16:57:19,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684403954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:19,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:19,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:57:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748921096] [2022-12-06 16:57:19,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:19,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:57:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:57:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:57:19,757 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2022-12-06 16:57:19,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 149 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2022-12-06 16:57:19,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:19,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2022-12-06 16:57:19,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:19,885 INFO L130 PetriNetUnfolder]: 86/626 cut-off events. [2022-12-06 16:57:19,885 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 16:57:19,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 626 events. 86/626 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3344 event pairs, 18 based on Foata normal form. 13/613 useless extension candidates. Maximal degree in co-relation 998. Up to 135 conditions per place. [2022-12-06 16:57:19,888 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 43 selfloop transitions, 7 changer transitions 13/156 dead transitions. [2022-12-06 16:57:19,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 156 transitions, 525 flow [2022-12-06 16:57:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:57:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:57:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2022-12-06 16:57:19,889 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7282442748091603 [2022-12-06 16:57:19,890 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 9 predicate places. [2022-12-06 16:57:19,890 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 156 transitions, 525 flow [2022-12-06 16:57:19,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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) [2022-12-06 16:57:19,891 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:19,891 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:19,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:57:19,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash 189382210, now seen corresponding path program 1 times [2022-12-06 16:57:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984537786] [2022-12-06 16:57:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:20,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:20,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984537786] [2022-12-06 16:57:20,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984537786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:20,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:20,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:57:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223953842] [2022-12-06 16:57:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:57:20,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:57:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:57:20,064 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-12-06 16:57:20,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 156 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 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) [2022-12-06 16:57:20,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:20,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-12-06 16:57:20,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:20,394 INFO L130 PetriNetUnfolder]: 97/692 cut-off events. [2022-12-06 16:57:20,394 INFO L131 PetriNetUnfolder]: For 66/78 co-relation queries the response was YES. [2022-12-06 16:57:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 692 events. 97/692 cut-off events. For 66/78 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3807 event pairs, 16 based on Foata normal form. 14/695 useless extension candidates. Maximal degree in co-relation 1313. Up to 145 conditions per place. [2022-12-06 16:57:20,397 INFO L137 encePairwiseOnDemand]: 111/131 looper letters, 26 selfloop transitions, 32 changer transitions 36/189 dead transitions. [2022-12-06 16:57:20,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 189 transitions, 833 flow [2022-12-06 16:57:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-06 16:57:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-06 16:57:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2520 transitions. [2022-12-06 16:57:20,401 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.739870816206694 [2022-12-06 16:57:20,402 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2022-12-06 16:57:20,402 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 189 transitions, 833 flow [2022-12-06 16:57:20,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 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) [2022-12-06 16:57:20,402 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:20,402 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:20,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:57:20,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:20,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash 217567650, now seen corresponding path program 1 times [2022-12-06 16:57:20,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:20,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515516366] [2022-12-06 16:57:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:20,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515516366] [2022-12-06 16:57:20,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515516366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:20,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:20,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:57:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995615317] [2022-12-06 16:57:20,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:20,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:57:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:20,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:57:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:57:20,536 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2022-12-06 16:57:20,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 189 transitions, 833 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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) [2022-12-06 16:57:20,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:20,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2022-12-06 16:57:20,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:20,674 INFO L130 PetriNetUnfolder]: 218/1000 cut-off events. [2022-12-06 16:57:20,675 INFO L131 PetriNetUnfolder]: For 375/377 co-relation queries the response was YES. [2022-12-06 16:57:20,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1000 events. 218/1000 cut-off events. For 375/377 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5964 event pairs, 50 based on Foata normal form. 0/981 useless extension candidates. Maximal degree in co-relation 2162. Up to 202 conditions per place. [2022-12-06 16:57:20,680 INFO L137 encePairwiseOnDemand]: 119/131 looper letters, 39 selfloop transitions, 28 changer transitions 54/224 dead transitions. [2022-12-06 16:57:20,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 224 transitions, 1209 flow [2022-12-06 16:57:20,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:57:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:57:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 921 transitions. [2022-12-06 16:57:20,682 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7811704834605598 [2022-12-06 16:57:20,683 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-12-06 16:57:20,684 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 224 transitions, 1209 flow [2022-12-06 16:57:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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) [2022-12-06 16:57:20,684 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:20,684 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:57:20,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:20,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1934843022, now seen corresponding path program 1 times [2022-12-06 16:57:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:20,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765259652] [2022-12-06 16:57:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:21,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:21,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765259652] [2022-12-06 16:57:21,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765259652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:21,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:21,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:57:21,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448378170] [2022-12-06 16:57:21,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:21,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:57:21,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:57:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:57:21,073 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2022-12-06 16:57:21,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 224 transitions, 1209 flow. Second operand has 8 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 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) [2022-12-06 16:57:21,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:21,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2022-12-06 16:57:21,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:21,204 INFO L130 PetriNetUnfolder]: 156/696 cut-off events. [2022-12-06 16:57:21,204 INFO L131 PetriNetUnfolder]: For 321/345 co-relation queries the response was YES. [2022-12-06 16:57:21,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 696 events. 156/696 cut-off events. For 321/345 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3567 event pairs, 41 based on Foata normal form. 6/685 useless extension candidates. Maximal degree in co-relation 1748. Up to 247 conditions per place. [2022-12-06 16:57:21,206 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 44 selfloop transitions, 6 changer transitions 46/171 dead transitions. [2022-12-06 16:57:21,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 171 transitions, 941 flow [2022-12-06 16:57:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:57:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:57:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2022-12-06 16:57:21,208 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6641221374045801 [2022-12-06 16:57:21,210 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 24 predicate places. [2022-12-06 16:57:21,210 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 171 transitions, 941 flow [2022-12-06 16:57:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.875) internal successors, (663), 8 states have internal predecessors, (663), 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) [2022-12-06 16:57:21,211 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:21,211 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:21,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:57:21,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash -611641167, now seen corresponding path program 1 times [2022-12-06 16:57:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:21,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32192331] [2022-12-06 16:57:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32192331] [2022-12-06 16:57:21,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32192331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:21,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:21,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:57:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010389041] [2022-12-06 16:57:21,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:21,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:57:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:57:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:57:21,390 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2022-12-06 16:57:21,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 171 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 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) [2022-12-06 16:57:21,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:21,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2022-12-06 16:57:21,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:21,485 INFO L130 PetriNetUnfolder]: 63/509 cut-off events. [2022-12-06 16:57:21,486 INFO L131 PetriNetUnfolder]: For 397/469 co-relation queries the response was YES. [2022-12-06 16:57:21,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 509 events. 63/509 cut-off events. For 397/469 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2250 event pairs, 5 based on Foata normal form. 27/527 useless extension candidates. Maximal degree in co-relation 1423. Up to 162 conditions per place. [2022-12-06 16:57:21,487 INFO L137 encePairwiseOnDemand]: 112/131 looper letters, 25 selfloop transitions, 25 changer transitions 49/176 dead transitions. [2022-12-06 16:57:21,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 176 transitions, 1107 flow [2022-12-06 16:57:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:57:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:57:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2022-12-06 16:57:21,489 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7267175572519083 [2022-12-06 16:57:21,491 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 27 predicate places. [2022-12-06 16:57:21,491 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 176 transitions, 1107 flow [2022-12-06 16:57:21,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 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) [2022-12-06 16:57:21,491 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:21,491 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:57:21,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1852407018, now seen corresponding path program 1 times [2022-12-06 16:57:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:21,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273476821] [2022-12-06 16:57:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:21,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273476821] [2022-12-06 16:57:21,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273476821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:21,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:21,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:57:21,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429592153] [2022-12-06 16:57:21,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:57:21,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:57:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:57:21,725 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2022-12-06 16:57:21,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 176 transitions, 1107 flow. Second operand has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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) [2022-12-06 16:57:21,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:21,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2022-12-06 16:57:21,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:21,850 INFO L130 PetriNetUnfolder]: 14/290 cut-off events. [2022-12-06 16:57:21,850 INFO L131 PetriNetUnfolder]: For 354/367 co-relation queries the response was YES. [2022-12-06 16:57:21,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 290 events. 14/290 cut-off events. For 354/367 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 812 event pairs, 0 based on Foata normal form. 14/302 useless extension candidates. Maximal degree in co-relation 853. Up to 81 conditions per place. [2022-12-06 16:57:21,851 INFO L137 encePairwiseOnDemand]: 124/131 looper letters, 46 selfloop transitions, 11 changer transitions 50/174 dead transitions. [2022-12-06 16:57:21,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 174 transitions, 1233 flow [2022-12-06 16:57:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:57:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:57:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 521 transitions. [2022-12-06 16:57:21,853 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6628498727735369 [2022-12-06 16:57:21,853 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 32 predicate places. [2022-12-06 16:57:21,853 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 174 transitions, 1233 flow [2022-12-06 16:57:21,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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) [2022-12-06 16:57:21,854 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:21,854 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:21,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 16:57:21,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:57:21,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1783215519, now seen corresponding path program 1 times [2022-12-06 16:57:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:21,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791839425] [2022-12-06 16:57:21,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:22,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:22,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791839425] [2022-12-06 16:57:22,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791839425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:22,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:22,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:57:22,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620852881] [2022-12-06 16:57:22,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:22,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:57:22,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:57:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:57:22,043 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-12-06 16:57:22,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 174 transitions, 1233 flow. Second operand has 8 states, 8 states have (on average 96.5) internal successors, (772), 8 states have internal predecessors, (772), 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) [2022-12-06 16:57:22,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:22,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-12-06 16:57:22,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:22,233 INFO L130 PetriNetUnfolder]: 14/286 cut-off events. [2022-12-06 16:57:22,234 INFO L131 PetriNetUnfolder]: For 428/438 co-relation queries the response was YES. [2022-12-06 16:57:22,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 286 events. 14/286 cut-off events. For 428/438 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 782 event pairs, 0 based on Foata normal form. 2/288 useless extension candidates. Maximal degree in co-relation 939. Up to 81 conditions per place. [2022-12-06 16:57:22,234 INFO L137 encePairwiseOnDemand]: 115/131 looper letters, 0 selfloop transitions, 0 changer transitions 183/183 dead transitions. [2022-12-06 16:57:22,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 183 transitions, 1433 flow [2022-12-06 16:57:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-06 16:57:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-06 16:57:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2017 transitions. [2022-12-06 16:57:22,238 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7331879316612141 [2022-12-06 16:57:22,239 INFO L294 CegarLoopForPetriNet]: 118 programPoint places, 50 predicate places. [2022-12-06 16:57:22,239 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 183 transitions, 1433 flow [2022-12-06 16:57:22,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.5) internal successors, (772), 8 states have internal predecessors, (772), 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) [2022-12-06 16:57:22,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-06 16:57:22,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-06 16:57:22,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-06 16:57:22,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-06 16:57:22,243 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-06 16:57:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 16:57:22,243 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:22,246 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:57:22,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:57:22,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:57:22 BasicIcfg [2022-12-06 16:57:22,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:57:22,252 INFO L158 Benchmark]: Toolchain (without parser) took 4641.35ms. Allocated memory was 209.7MB in the beginning and 391.1MB in the end (delta: 181.4MB). Free memory was 185.0MB in the beginning and 238.6MB in the end (delta: -53.6MB). Peak memory consumption was 128.3MB. Max. memory is 8.0GB. [2022-12-06 16:57:22,252 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 186.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:57:22,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.82ms. Allocated memory is still 209.7MB. Free memory was 184.5MB in the beginning and 164.9MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-06 16:57:22,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.10ms. Allocated memory is still 209.7MB. Free memory was 164.9MB in the beginning and 163.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:57:22,253 INFO L158 Benchmark]: Boogie Preprocessor took 33.05ms. Allocated memory is still 209.7MB. Free memory was 163.0MB in the beginning and 161.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:57:22,253 INFO L158 Benchmark]: RCFGBuilder took 456.60ms. Allocated memory is still 209.7MB. Free memory was 161.4MB in the beginning and 144.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-06 16:57:22,254 INFO L158 Benchmark]: TraceAbstraction took 3683.23ms. Allocated memory was 209.7MB in the beginning and 391.1MB in the end (delta: 181.4MB). Free memory was 144.1MB in the beginning and 238.6MB in the end (delta: -94.5MB). Peak memory consumption was 87.4MB. Max. memory is 8.0GB. [2022-12-06 16:57:22,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 186.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 408.82ms. Allocated memory is still 209.7MB. Free memory was 184.5MB in the beginning and 164.9MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.10ms. Allocated memory is still 209.7MB. Free memory was 164.9MB in the beginning and 163.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.05ms. Allocated memory is still 209.7MB. Free memory was 163.0MB in the beginning and 161.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 456.60ms. Allocated memory is still 209.7MB. Free memory was 161.4MB in the beginning and 144.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3683.23ms. Allocated memory was 209.7MB in the beginning and 391.1MB in the end (delta: 181.4MB). Free memory was 144.1MB in the beginning and 238.6MB in the end (delta: -94.5MB). Peak memory consumption was 87.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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, 163 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: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 450 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 744 IncrementalHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 112 mSDtfsCounter, 744 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1433occurred in iteration=8, InterpolantAutomatonStates: 87, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 579 NumberOfCodeBlocks, 579 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 2494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-06 16:57:22,287 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...