/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:03:18,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:03:18,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:03:18,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:03:18,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:03:18,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:03:18,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:03:18,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:03:18,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:03:18,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:03:18,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:03:18,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:03:18,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:03:18,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:03:18,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:03:18,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:03:18,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:03:18,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:03:18,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:03:18,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:03:18,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:03:18,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:03:18,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:03:18,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:03:18,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:03:18,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:03:18,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:03:18,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:03:18,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:03:18,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 19:03:18,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 19:03:18,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 19:03:18,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 19:03:18,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 19:03:18,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 19:03:18,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 19:03:18,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 19:03:18,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 19:03:18,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:03:18,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:03:18,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:03:18,880 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 [2022-12-12 19:03:18,912 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:03:18,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:03:18,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:03:18,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:03:18,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:03:18,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:03:18,915 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:03:18,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:03:18,915 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:03:18,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:03:18,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:03:18,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:03:18,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:03:18,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:03:18,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:03:18,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:03:18,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:03:18,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:03:18,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:03:18,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:03:18,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:03:18,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:03:18,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:03:18,925 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:03:18,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:03:19,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:03:19,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:03:19,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:03:19,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:03:19,267 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:03:19,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-12-12 19:03:20,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:03:20,686 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:03:20,686 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-12-12 19:03:20,696 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/900059c05/c7dbc7f98eb94bbc9cf0e2e70fb31783/FLAG41204bba7 [2022-12-12 19:03:20,706 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/900059c05/c7dbc7f98eb94bbc9cf0e2e70fb31783 [2022-12-12 19:03:20,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:03:20,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:03:20,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:03:20,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:03:20,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:03:20,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:03:20" (1/1) ... [2022-12-12 19:03:20,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12085553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:20, skipping insertion in model container [2022-12-12 19:03:20,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:03:20" (1/1) ... [2022-12-12 19:03:20,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:03:20,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:03:20,883 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_69-refine-protected-loop-interval_true.i[1107,1120] [2022-12-12 19:03:21,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:03:21,056 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:03:21,071 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_69-refine-protected-loop-interval_true.i[1107,1120] [2022-12-12 19:03:21,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:03:21,146 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:03:21,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21 WrapperNode [2022-12-12 19:03:21,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:03:21,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:03:21,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:03:21,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:03:21,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,212 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2022-12-12 19:03:21,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:03:21,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:03:21,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:03:21,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:03:21,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:03:21,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:03:21,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:03:21,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:03:21,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (1/1) ... [2022-12-12 19:03:21,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:03:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:03:21,285 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) [2022-12-12 19:03:21,295 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 [2022-12-12 19:03:21,327 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-12 19:03:21,327 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:03:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:03:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:03:21,330 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:03:21,499 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:03:21,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:03:21,685 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:03:21,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:03:21,692 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 19:03:21,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:03:21 BoogieIcfgContainer [2022-12-12 19:03:21,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:03:21,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:03:21,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:03:21,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:03:21,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:03:20" (1/3) ... [2022-12-12 19:03:21,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1038d705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:03:21, skipping insertion in model container [2022-12-12 19:03:21,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:03:21" (2/3) ... [2022-12-12 19:03:21,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1038d705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:03:21, skipping insertion in model container [2022-12-12 19:03:21,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:03:21" (3/3) ... [2022-12-12 19:03:21,703 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-12-12 19:03:21,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:03:21,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 19:03:21,720 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:03:21,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 19:03:21,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 105 transitions, 215 flow [2022-12-12 19:03:21,886 INFO L130 PetriNetUnfolder]: 10/104 cut-off events. [2022-12-12 19:03:21,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:21,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 10/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-12-12 19:03:21,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 105 transitions, 215 flow [2022-12-12 19:03:21,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 104 transitions, 211 flow [2022-12-12 19:03:21,898 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:03:21,923 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 104 transitions, 211 flow [2022-12-12 19:03:21,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 104 transitions, 211 flow [2022-12-12 19:03:21,971 INFO L130 PetriNetUnfolder]: 10/104 cut-off events. [2022-12-12 19:03:21,972 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:21,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 10/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-12-12 19:03:21,977 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 104 transitions, 211 flow [2022-12-12 19:03:21,977 INFO L226 LiptonReduction]: Number of co-enabled transitions 2464 [2022-12-12 19:03:25,388 INFO L241 LiptonReduction]: Total number of compositions: 80 [2022-12-12 19:03:25,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:03:25,406 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;@646c928, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:03:25,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 19:03:25,410 INFO L130 PetriNetUnfolder]: 2/27 cut-off events. [2022-12-12 19:03:25,410 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:25,411 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:25,411 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 19:03:25,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash -315100603, now seen corresponding path program 1 times [2022-12-12 19:03:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829774554] [2022-12-12 19:03:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:25,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:25,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829774554] [2022-12-12 19:03:25,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829774554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:25,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:25,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 19:03:25,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572462944] [2022-12-12 19:03:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:03:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:03:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:03:25,733 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2022-12-12 19:03:25,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2022-12-12 19:03:25,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:25,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2022-12-12 19:03:25,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:25,894 INFO L130 PetriNetUnfolder]: 377/715 cut-off events. [2022-12-12 19:03:25,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:03:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 715 events. 377/715 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3423 event pairs, 208 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 1410. Up to 557 conditions per place. [2022-12-12 19:03:25,900 INFO L137 encePairwiseOnDemand]: 37/46 looper letters, 44 selfloop transitions, 4 changer transitions 15/68 dead transitions. [2022-12-12 19:03:25,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 265 flow [2022-12-12 19:03:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:03:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:03:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2022-12-12 19:03:25,910 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6159420289855072 [2022-12-12 19:03:25,913 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2022-12-12 19:03:25,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 68 transitions, 265 flow [2022-12-12 19:03:25,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 53 transitions, 205 flow [2022-12-12 19:03:25,918 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 205 flow [2022-12-12 19:03:25,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2022-12-12 19:03:25,918 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:25,918 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:03:25,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1167047746, now seen corresponding path program 1 times [2022-12-12 19:03:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871409035] [2022-12-12 19:03:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:26,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:26,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871409035] [2022-12-12 19:03:26,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871409035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:26,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:26,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:03:26,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174890324] [2022-12-12 19:03:26,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:26,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:03:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:03:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:03:26,056 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2022-12-12 19:03:26,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-12-12 19:03:26,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:26,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2022-12-12 19:03:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:26,153 INFO L130 PetriNetUnfolder]: 210/447 cut-off events. [2022-12-12 19:03:26,154 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-12 19:03:26,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 447 events. 210/447 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2183 event pairs, 14 based on Foata normal form. 19/256 useless extension candidates. Maximal degree in co-relation 1256. Up to 382 conditions per place. [2022-12-12 19:03:26,159 INFO L137 encePairwiseOnDemand]: 39/46 looper letters, 40 selfloop transitions, 7 changer transitions 10/67 dead transitions. [2022-12-12 19:03:26,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 371 flow [2022-12-12 19:03:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:03:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:03:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2022-12-12 19:03:26,170 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2022-12-12 19:03:26,170 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2022-12-12 19:03:26,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 67 transitions, 371 flow [2022-12-12 19:03:26,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 57 transitions, 317 flow [2022-12-12 19:03:26,174 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 57 transitions, 317 flow [2022-12-12 19:03:26,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-12-12 19:03:26,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:26,174 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:26,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 19:03:26,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1184056975, now seen corresponding path program 1 times [2022-12-12 19:03:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726250940] [2022-12-12 19:03:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:26,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726250940] [2022-12-12 19:03:26,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726250940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:26,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:26,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:03:26,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711844665] [2022-12-12 19:03:26,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:26,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:03:26,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:03:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:03:26,271 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2022-12-12 19:03:26,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 57 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-12-12 19:03:26,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:26,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2022-12-12 19:03:26,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:26,423 INFO L130 PetriNetUnfolder]: 205/446 cut-off events. [2022-12-12 19:03:26,423 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 19:03:26,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 446 events. 205/446 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1935 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 1678. Up to 431 conditions per place. [2022-12-12 19:03:26,426 INFO L137 encePairwiseOnDemand]: 37/46 looper letters, 79 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2022-12-12 19:03:26,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 91 transitions, 689 flow [2022-12-12 19:03:26,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:03:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:03:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2022-12-12 19:03:26,429 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.32971014492753625 [2022-12-12 19:03:26,430 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2022-12-12 19:03:26,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 91 transitions, 689 flow [2022-12-12 19:03:26,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 91 transitions, 689 flow [2022-12-12 19:03:26,434 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 91 transitions, 689 flow [2022-12-12 19:03:26,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-12-12 19:03:26,435 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:26,435 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:26,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 19:03:26,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1948940492, now seen corresponding path program 1 times [2022-12-12 19:03:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:26,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572568273] [2022-12-12 19:03:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:26,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572568273] [2022-12-12 19:03:26,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572568273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:26,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:26,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:03:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093179935] [2022-12-12 19:03:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:03:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:03:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:03:26,512 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2022-12-12 19:03:26,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 91 transitions, 689 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-12 19:03:26,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:26,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2022-12-12 19:03:26,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:26,679 INFO L130 PetriNetUnfolder]: 292/615 cut-off events. [2022-12-12 19:03:26,679 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-12 19:03:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 615 events. 292/615 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2926 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 2879. Up to 596 conditions per place. [2022-12-12 19:03:26,683 INFO L137 encePairwiseOnDemand]: 39/46 looper letters, 197 selfloop transitions, 12 changer transitions 0/213 dead transitions. [2022-12-12 19:03:26,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 213 transitions, 2063 flow [2022-12-12 19:03:26,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:03:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:03:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2022-12-12 19:03:26,686 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2022-12-12 19:03:26,688 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2022-12-12 19:03:26,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 213 transitions, 2063 flow [2022-12-12 19:03:26,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 213 transitions, 2063 flow [2022-12-12 19:03:26,694 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 213 transitions, 2063 flow [2022-12-12 19:03:26,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2022-12-12 19:03:26,694 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:26,694 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 19:03:26,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:26,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:26,695 INFO L85 PathProgramCache]: Analyzing trace with hash 318635162, now seen corresponding path program 1 times [2022-12-12 19:03:26,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:26,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582589981] [2022-12-12 19:03:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:26,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:26,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582589981] [2022-12-12 19:03:26,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582589981] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:26,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:26,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 19:03:26,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172274787] [2022-12-12 19:03:26,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:26,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:03:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:03:26,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 19:03:26,803 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2022-12-12 19:03:26,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 213 transitions, 2063 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-12-12 19:03:26,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:26,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2022-12-12 19:03:26,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:27,054 INFO L130 PetriNetUnfolder]: 336/709 cut-off events. [2022-12-12 19:03:27,055 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-12-12 19:03:27,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4021 conditions, 709 events. 336/709 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3376 event pairs, 0 based on Foata normal form. 15/403 useless extension candidates. Maximal degree in co-relation 4000. Up to 688 conditions per place. [2022-12-12 19:03:27,059 INFO L137 encePairwiseOnDemand]: 38/46 looper letters, 126 selfloop transitions, 15 changer transitions 132/277 dead transitions. [2022-12-12 19:03:27,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 277 transitions, 3241 flow [2022-12-12 19:03:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:03:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:03:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2022-12-12 19:03:27,064 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-12 19:03:27,066 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2022-12-12 19:03:27,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 277 transitions, 3241 flow [2022-12-12 19:03:27,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 145 transitions, 1659 flow [2022-12-12 19:03:27,071 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 145 transitions, 1659 flow [2022-12-12 19:03:27,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-12-12 19:03:27,072 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:27,072 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:27,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 19:03:27,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash -939262537, now seen corresponding path program 1 times [2022-12-12 19:03:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:27,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825567737] [2022-12-12 19:03:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:27,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:27,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:27,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825567737] [2022-12-12 19:03:27,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825567737] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:03:27,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474072881] [2022-12-12 19:03:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:27,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:03:27,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:03:27,168 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) [2022-12-12 19:03:27,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 19:03:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:27,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 19:03:27,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:03:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:27,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 19:03:27,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474072881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:27,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 19:03:27,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2022-12-12 19:03:27,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217712838] [2022-12-12 19:03:27,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:27,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 19:03:27,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:27,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 19:03:27,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-12 19:03:27,406 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2022-12-12 19:03:27,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 145 transitions, 1659 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-12-12 19:03:27,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:27,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2022-12-12 19:03:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:27,579 INFO L130 PetriNetUnfolder]: 146/508 cut-off events. [2022-12-12 19:03:27,579 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-12 19:03:27,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 508 events. 146/508 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2996 event pairs, 1 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 3315. Up to 486 conditions per place. [2022-12-12 19:03:27,582 INFO L137 encePairwiseOnDemand]: 38/46 looper letters, 112 selfloop transitions, 19 changer transitions 52/187 dead transitions. [2022-12-12 19:03:27,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 187 transitions, 2523 flow [2022-12-12 19:03:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 19:03:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 19:03:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2022-12-12 19:03:27,583 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2826086956521739 [2022-12-12 19:03:27,584 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2022-12-12 19:03:27,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 187 transitions, 2523 flow [2022-12-12 19:03:27,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 135 transitions, 1795 flow [2022-12-12 19:03:27,587 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 135 transitions, 1795 flow [2022-12-12 19:03:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2022-12-12 19:03:27,587 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:03:27,588 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:27,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 19:03:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 19:03:27,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:03:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:03:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1873848648, now seen corresponding path program 1 times [2022-12-12 19:03:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:03:27,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503960785] [2022-12-12 19:03:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:03:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:03:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:03:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:03:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:03:27,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503960785] [2022-12-12 19:03:27,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503960785] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:03:27,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:03:27,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 19:03:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131035055] [2022-12-12 19:03:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:03:27,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 19:03:27,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:03:27,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 19:03:27,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 19:03:27,870 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2022-12-12 19:03:27,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 135 transitions, 1795 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2022-12-12 19:03:27,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:03:27,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2022-12-12 19:03:27,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:03:27,978 INFO L130 PetriNetUnfolder]: 66/281 cut-off events. [2022-12-12 19:03:27,978 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-12 19:03:27,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 281 events. 66/281 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1256 event pairs, 1 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 2042. Up to 259 conditions per place. [2022-12-12 19:03:27,979 INFO L137 encePairwiseOnDemand]: 37/46 looper letters, 0 selfloop transitions, 0 changer transitions 119/119 dead transitions. [2022-12-12 19:03:27,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 119 transitions, 1803 flow [2022-12-12 19:03:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 19:03:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 19:03:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2022-12-12 19:03:27,980 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2329192546583851 [2022-12-12 19:03:27,981 INFO L295 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2022-12-12 19:03:27,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 119 transitions, 1803 flow [2022-12-12 19:03:27,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 19:03:27,982 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 19:03:27,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 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) [2022-12-12 19:03:27,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-12 19:03:27,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-12 19:03:27,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-12 19:03:27,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-12 19:03:27,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-12 19:03:27,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 19:03:27,987 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:03:27,992 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 19:03:27,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 19:03:27,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 07:03:27 BasicIcfg [2022-12-12 19:03:27,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 19:03:27,998 INFO L158 Benchmark]: Toolchain (without parser) took 7289.05ms. Allocated memory was 173.0MB in the beginning and 260.0MB in the end (delta: 87.0MB). Free memory was 149.0MB in the beginning and 107.7MB in the end (delta: 41.3MB). Peak memory consumption was 128.9MB. Max. memory is 8.0GB. [2022-12-12 19:03:27,998 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:03:27,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.03ms. Allocated memory is still 173.0MB. Free memory was 148.6MB in the beginning and 129.2MB in the end (delta: 19.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 19:03:27,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.77ms. Allocated memory is still 173.0MB. Free memory was 129.2MB in the beginning and 127.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 19:03:27,999 INFO L158 Benchmark]: Boogie Preprocessor took 34.24ms. Allocated memory is still 173.0MB. Free memory was 127.2MB in the beginning and 125.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 19:03:27,999 INFO L158 Benchmark]: RCFGBuilder took 446.17ms. Allocated memory is still 173.0MB. Free memory was 125.7MB in the beginning and 111.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 19:03:28,001 INFO L158 Benchmark]: TraceAbstraction took 6301.55ms. Allocated memory was 173.0MB in the beginning and 260.0MB in the end (delta: 87.0MB). Free memory was 110.4MB in the beginning and 107.7MB in the end (delta: 2.7MB). Peak memory consumption was 90.1MB. Max. memory is 8.0GB. [2022-12-12 19:03:28,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 439.03ms. Allocated memory is still 173.0MB. Free memory was 148.6MB in the beginning and 129.2MB in the end (delta: 19.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.77ms. Allocated memory is still 173.0MB. Free memory was 129.2MB in the beginning and 127.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.24ms. Allocated memory is still 173.0MB. Free memory was 127.2MB in the beginning and 125.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 446.17ms. Allocated memory is still 173.0MB. Free memory was 125.7MB in the beginning and 111.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6301.55ms. Allocated memory was 173.0MB in the beginning and 260.0MB in the end (delta: 87.0MB). Free memory was 110.4MB in the beginning and 107.7MB in the end (delta: 2.7MB). Peak memory consumption was 90.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 98 PlacesBefore, 44 PlacesAfterwards, 104 TransitionsBefore, 46 TransitionsAfterwards, 2464 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 30 TrivialYvCompositions, 42 ConcurrentYvCompositions, 4 ChoiceCompositions, 80 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3092, independent: 2991, independent conditional: 2991, independent unconditional: 0, dependent: 101, dependent conditional: 101, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3092, independent: 2991, independent conditional: 0, independent unconditional: 2991, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3092, independent: 2991, independent conditional: 0, independent unconditional: 2991, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3092, independent: 2991, independent conditional: 0, independent unconditional: 2991, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1896, independent: 1844, independent conditional: 0, independent unconditional: 1844, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1896, independent: 1828, independent conditional: 0, independent unconditional: 1828, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, independent: 27, independent conditional: 0, independent unconditional: 27, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3092, independent: 1147, independent conditional: 0, independent unconditional: 1147, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 1896, unknown conditional: 0, unknown unconditional: 1896] , Statistics on independence cache: Total cache size (in pairs): 3863, Positive cache size: 3811, Positive conditional cache size: 0, Positive unconditional cache size: 3811, Negative cache size: 52, Negative conditional cache size: 0, Negative unconditional cache size: 52, 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, 135 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: 6.2s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 952 IncrementalHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 20 mSDtfsCounter, 952 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2063occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4227 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 4 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 15/19 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! [2022-12-12 19:03:28,019 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...