/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_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:58:39,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:58:39,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:58:39,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:58:39,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:58:39,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:58:39,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:58:39,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:58:39,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:58:39,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:58:39,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:58:39,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:58:39,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:58:39,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:58:39,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:58:39,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:58:39,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:58:39,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:58:39,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:58:39,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:58:39,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:58:39,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:58:39,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:58:39,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:58:39,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 16:58:39,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 16:58:39,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 16:58:39,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 16:58:39,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 16:58:39,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-06 16:58:39,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:58:39,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:58:39,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:58:39,153 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 16:58:39,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:58:39,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:58:39,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:58:39,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:58:39,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:58:39,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:58:39,179 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:58:39,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:58:39,179 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:58:39,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:58:39,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:58:39,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:58:39,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:58:39,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:58:39,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:58:39,181 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:58:39,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:58:39,181 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:58:39,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:58:39,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:58:39,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:58:39,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:58:39,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:58:39,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:58:39,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:58:39,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:58:39,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:58:39,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:58:39,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:58:39,183 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:58:39,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:58:39,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:58:39,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:58:39,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:58:39,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:58:39,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:58:39,513 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:58:39,513 INFO L432 ainManager$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 [2022-12-06 16:58:40,536 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:58:40,760 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:58:40,760 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-12-06 16:58:40,767 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9a8f247/62791b6f79cf4914806814adb54214e8/FLAG0870f37c4 [2022-12-06 16:58:40,778 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9a8f247/62791b6f79cf4914806814adb54214e8 [2022-12-06 16:58:40,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:58:40,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:58:40,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:58:40,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:58:40,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:58:40,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:58:40" (1/1) ... [2022-12-06 16:58:40,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c2b26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:40, skipping insertion in model container [2022-12-06 16:58:40,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:58:40" (1/1) ... [2022-12-06 16:58:40,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:58:40,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:58:40,911 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] [2022-12-06 16:58:41,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:58:41,014 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:58:41,023 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] [2022-12-06 16:58:41,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:58:41,080 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:58:41,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41 WrapperNode [2022-12-06 16:58:41,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:58:41,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:58:41,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:58:41,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:58:41,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,128 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2022-12-06 16:58:41,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:58:41,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:58:41,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:58:41,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:58:41,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:58:41,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:58:41,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:58:41,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:58:41,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (1/1) ... [2022-12-06 16:58:41,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:58:41,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:58:41,196 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 16:58:41,227 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 16:58:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-12-06 16:58:41,252 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:58:41,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:58:41,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:58:41,253 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 16:58:41,352 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:58:41,353 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:58:41,519 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:58:41,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:58:41,536 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 16:58:41,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:58:41 BoogieIcfgContainer [2022-12-06 16:58:41,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:58:41,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:58:41,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:58:41,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:58:41,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:58:40" (1/3) ... [2022-12-06 16:58:41,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46516ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:58:41, skipping insertion in model container [2022-12-06 16:58:41,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:58:41" (2/3) ... [2022-12-06 16:58:41,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46516ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:58:41, skipping insertion in model container [2022-12-06 16:58:41,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:58:41" (3/3) ... [2022-12-06 16:58:41,543 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-12-06 16:58:41,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:58:41,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-06 16:58:41,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:58:41,617 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:58:41,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 105 transitions, 215 flow [2022-12-06 16:58:41,693 INFO L130 PetriNetUnfolder]: 10/104 cut-off events. [2022-12-06 16:58:41,693 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:58:41,698 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. [2022-12-06 16:58:41,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 105 transitions, 215 flow [2022-12-06 16:58:41,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 104 transitions, 211 flow [2022-12-06 16:58:41,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:58:41,712 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;@4e36b57b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:58:41,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-06 16:58:41,730 INFO L130 PetriNetUnfolder]: 5/80 cut-off events. [2022-12-06 16:58:41,731 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:58:41,731 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:41,731 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] [2022-12-06 16:58:41,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:41,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash 118750428, now seen corresponding path program 1 times [2022-12-06 16:58:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:41,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272737629] [2022-12-06 16:58:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:42,191 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 16:58:42,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:42,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272737629] [2022-12-06 16:58:42,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272737629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:42,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:58:42,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:58:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919922599] [2022-12-06 16:58:42,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:42,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:58:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:58:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:58:42,245 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 105 [2022-12-06 16:58:42,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 16:58:42,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:42,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 105 [2022-12-06 16:58:42,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:42,545 INFO L130 PetriNetUnfolder]: 193/715 cut-off events. [2022-12-06 16:58:42,545 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:58:42,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 715 events. 193/715 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4036 event pairs, 47 based on Foata normal form. 51/648 useless extension candidates. Maximal degree in co-relation 999. Up to 113 conditions per place. [2022-12-06 16:58:42,550 INFO L137 encePairwiseOnDemand]: 87/105 looper letters, 51 selfloop transitions, 15 changer transitions 0/137 dead transitions. [2022-12-06 16:58:42,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 137 transitions, 409 flow [2022-12-06 16:58:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:58:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:58:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 685 transitions. [2022-12-06 16:58:42,578 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2022-12-06 16:58:42,580 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2022-12-06 16:58:42,580 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 137 transitions, 409 flow [2022-12-06 16:58:42,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 16:58:42,581 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:42,581 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] [2022-12-06 16:58:42,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:58:42,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash 131385297, now seen corresponding path program 1 times [2022-12-06 16:58:42,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:42,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575953955] [2022-12-06 16:58:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:42,741 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 16:58:42,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:42,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575953955] [2022-12-06 16:58:42,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575953955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:42,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:58:42,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:58:42,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767022381] [2022-12-06 16:58:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:42,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:58:42,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:58:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:58:42,744 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 105 [2022-12-06 16:58:42,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 16:58:42,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:42,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 105 [2022-12-06 16:58:42,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:42,786 INFO L130 PetriNetUnfolder]: 9/139 cut-off events. [2022-12-06 16:58:42,786 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 16:58:42,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 139 events. 9/139 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 223 event pairs, 0 based on Foata normal form. 6/136 useless extension candidates. Maximal degree in co-relation 158. Up to 18 conditions per place. [2022-12-06 16:58:42,789 INFO L137 encePairwiseOnDemand]: 100/105 looper letters, 8 selfloop transitions, 5 changer transitions 8/115 dead transitions. [2022-12-06 16:58:42,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 115 transitions, 347 flow [2022-12-06 16:58:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:58:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:58:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2022-12-06 16:58:42,795 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8476190476190476 [2022-12-06 16:58:42,796 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2022-12-06 16:58:42,796 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 347 flow [2022-12-06 16:58:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 16:58:42,796 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:42,797 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] [2022-12-06 16:58:42,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:58:42,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash 498324229, now seen corresponding path program 1 times [2022-12-06 16:58:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:42,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094304194] [2022-12-06 16:58:42,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:42,916 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 16:58:42,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094304194] [2022-12-06 16:58:42,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094304194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:42,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:58:42,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:58:42,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525008973] [2022-12-06 16:58:42,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:42,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:58:42,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:58:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:58:42,919 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 105 [2022-12-06 16:58:42,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 347 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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 16:58:42,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:42,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 105 [2022-12-06 16:58:42,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:42,995 INFO L130 PetriNetUnfolder]: 17/199 cut-off events. [2022-12-06 16:58:42,995 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-12-06 16:58:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 199 events. 17/199 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 496 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 315. Up to 29 conditions per place. [2022-12-06 16:58:42,996 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 43 selfloop transitions, 18 changer transitions 8/139 dead transitions. [2022-12-06 16:58:42,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 583 flow [2022-12-06 16:58:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:58:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:58:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 651 transitions. [2022-12-06 16:58:42,998 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.775 [2022-12-06 16:58:42,998 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2022-12-06 16:58:42,999 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 139 transitions, 583 flow [2022-12-06 16:58:42,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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 16:58:42,999 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:42,999 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] [2022-12-06 16:58:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:58:42,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:43,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1537165634, now seen corresponding path program 1 times [2022-12-06 16:58:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:43,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740494254] [2022-12-06 16:58:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:43,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:43,057 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 16:58:43,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:43,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740494254] [2022-12-06 16:58:43,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740494254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:43,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:58:43,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:58:43,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979215712] [2022-12-06 16:58:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:58:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:43,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:58:43,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:58:43,060 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 105 [2022-12-06 16:58:43,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 139 transitions, 583 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 16:58:43,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:43,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 105 [2022-12-06 16:58:43,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:43,148 INFO L130 PetriNetUnfolder]: 40/287 cut-off events. [2022-12-06 16:58:43,148 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-12-06 16:58:43,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 287 events. 40/287 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1065 event pairs, 13 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 553. Up to 44 conditions per place. [2022-12-06 16:58:43,150 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 36 selfloop transitions, 13 changer transitions 8/133 dead transitions. [2022-12-06 16:58:43,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 643 flow [2022-12-06 16:58:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:58:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:58:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2022-12-06 16:58:43,151 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-12-06 16:58:43,152 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 11 predicate places. [2022-12-06 16:58:43,152 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 133 transitions, 643 flow [2022-12-06 16:58:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 16:58:43,152 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:43,152 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:58:43,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1051079027, now seen corresponding path program 1 times [2022-12-06 16:58:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:43,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031098909] [2022-12-06 16:58:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:58:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:43,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031098909] [2022-12-06 16:58:43,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031098909] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 16:58:43,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724229968] [2022-12-06 16:58:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:43,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:58:43,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:58:43,247 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) [2022-12-06 16:58:43,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 16:58:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:43,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-06 16:58:43,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 16:58:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:58:43,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 16:58:43,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724229968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:43,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 16:58:43,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2022-12-06 16:58:43,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534407643] [2022-12-06 16:58:43,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:43,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 16:58:43,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:43,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 16:58:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-06 16:58:43,428 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 105 [2022-12-06 16:58:43,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 133 transitions, 643 flow. Second operand has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 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 16:58:43,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:43,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 105 [2022-12-06 16:58:43,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:43,567 INFO L130 PetriNetUnfolder]: 45/333 cut-off events. [2022-12-06 16:58:43,568 INFO L131 PetriNetUnfolder]: For 199/213 co-relation queries the response was YES. [2022-12-06 16:58:43,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 333 events. 45/333 cut-off events. For 199/213 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1270 event pairs, 17 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 766. Up to 61 conditions per place. [2022-12-06 16:58:43,570 INFO L137 encePairwiseOnDemand]: 97/105 looper letters, 43 selfloop transitions, 17 changer transitions 8/143 dead transitions. [2022-12-06 16:58:43,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 143 transitions, 841 flow [2022-12-06 16:58:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 16:58:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 16:58:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 761 transitions. [2022-12-06 16:58:43,573 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8052910052910053 [2022-12-06 16:58:43,576 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 19 predicate places. [2022-12-06 16:58:43,577 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 841 flow [2022-12-06 16:58:43,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 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 16:58:43,580 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:43,580 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:43,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 16:58:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 16:58:43,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash -67656625, now seen corresponding path program 1 times [2022-12-06 16:58:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:43,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213568245] [2022-12-06 16:58:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:58:43,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:43,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213568245] [2022-12-06 16:58:43,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213568245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:43,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:58:43,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:58:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746041815] [2022-12-06 16:58:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:43,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:58:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:58:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:58:43,911 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 105 [2022-12-06 16:58:43,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 841 flow. Second operand has 8 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 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 16:58:43,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:43,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 105 [2022-12-06 16:58:43,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:44,081 INFO L130 PetriNetUnfolder]: 84/550 cut-off events. [2022-12-06 16:58:44,081 INFO L131 PetriNetUnfolder]: For 482/508 co-relation queries the response was YES. [2022-12-06 16:58:44,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 550 events. 84/550 cut-off events. For 482/508 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2489 event pairs, 23 based on Foata normal form. 0/503 useless extension candidates. Maximal degree in co-relation 1406. Up to 84 conditions per place. [2022-12-06 16:58:44,083 INFO L137 encePairwiseOnDemand]: 89/105 looper letters, 43 selfloop transitions, 29 changer transitions 15/160 dead transitions. [2022-12-06 16:58:44,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 160 transitions, 1133 flow [2022-12-06 16:58:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-06 16:58:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-06 16:58:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1076 transitions. [2022-12-06 16:58:44,085 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7319727891156462 [2022-12-06 16:58:44,086 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 32 predicate places. [2022-12-06 16:58:44,086 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 160 transitions, 1133 flow [2022-12-06 16:58:44,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 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 16:58:44,086 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:58:44,086 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:44,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:58:44,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-06 16:58:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:58:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash -771887862, now seen corresponding path program 1 times [2022-12-06 16:58:44,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:58:44,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350792641] [2022-12-06 16:58:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:58:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:58:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:58:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 16:58:44,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:58:44,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350792641] [2022-12-06 16:58:44,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350792641] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:58:44,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:58:44,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:58:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728006572] [2022-12-06 16:58:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:58:44,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:58:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:58:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:58:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:58:44,149 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 105 [2022-12-06 16:58:44,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 160 transitions, 1133 flow. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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 16:58:44,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:58:44,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 105 [2022-12-06 16:58:44,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:58:44,224 INFO L130 PetriNetUnfolder]: 89/539 cut-off events. [2022-12-06 16:58:44,224 INFO L131 PetriNetUnfolder]: For 688/744 co-relation queries the response was YES. [2022-12-06 16:58:44,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 539 events. 89/539 cut-off events. For 688/744 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2513 event pairs, 17 based on Foata normal form. 8/510 useless extension candidates. Maximal degree in co-relation 1515. Up to 100 conditions per place. [2022-12-06 16:58:44,226 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2022-12-06 16:58:44,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 159 transitions, 1243 flow [2022-12-06 16:58:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 16:58:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 16:58:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 654 transitions. [2022-12-06 16:58:44,227 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7785714285714286 [2022-12-06 16:58:44,228 INFO L294 CegarLoopForPetriNet]: 98 programPoint places, 34 predicate places. [2022-12-06 16:58:44,228 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1243 flow [2022-12-06 16:58:44,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 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 16:58:44,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-06 16:58:44,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-06 16:58:44,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-06 16:58:44,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-06 16:58:44,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-06 16:58:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 16:58:44,231 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:58:44,234 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:58:44,234 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:58:44,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:58:44 BasicIcfg [2022-12-06 16:58:44,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:58:44,238 INFO L158 Benchmark]: Toolchain (without parser) took 3456.73ms. Allocated memory was 198.2MB in the beginning and 289.4MB in the end (delta: 91.2MB). Free memory was 173.2MB in the beginning and 195.7MB in the end (delta: -22.5MB). Peak memory consumption was 69.7MB. Max. memory is 8.0GB. [2022-12-06 16:58:44,238 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory was 174.6MB in the beginning and 174.5MB in the end (delta: 88.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:58:44,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.93ms. Allocated memory is still 198.2MB. Free memory was 172.7MB in the beginning and 153.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-06 16:58:44,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.20ms. Allocated memory is still 198.2MB. Free memory was 153.8MB in the beginning and 151.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:58:44,239 INFO L158 Benchmark]: Boogie Preprocessor took 25.91ms. Allocated memory is still 198.2MB. Free memory was 151.2MB in the beginning and 150.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:58:44,239 INFO L158 Benchmark]: RCFGBuilder took 382.32ms. Allocated memory is still 198.2MB. Free memory was 150.1MB in the beginning and 135.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-06 16:58:44,239 INFO L158 Benchmark]: TraceAbstraction took 2698.14ms. Allocated memory was 198.2MB in the beginning and 289.4MB in the end (delta: 91.2MB). Free memory was 134.4MB in the beginning and 195.7MB in the end (delta: -61.3MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. [2022-12-06 16:58:44,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 198.2MB. Free memory was 174.6MB in the beginning and 174.5MB in the end (delta: 88.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.93ms. Allocated memory is still 198.2MB. Free memory was 172.7MB in the beginning and 153.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.20ms. Allocated memory is still 198.2MB. Free memory was 153.8MB in the beginning and 151.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.91ms. Allocated memory is still 198.2MB. Free memory was 151.2MB in the beginning and 150.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 382.32ms. Allocated memory is still 198.2MB. Free memory was 150.1MB in the beginning and 135.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2698.14ms. Allocated memory was 198.2MB in the beginning and 289.4MB in the end (delta: 91.2MB). Free memory was 134.4MB in the beginning and 195.7MB in the end (delta: -61.3MB). Peak memory consumption was 30.9MB. 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 - 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: 2.6s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 269 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 493 IncrementalHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 104 mSDtfsCounter, 493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1243occurred in iteration=7, InterpolantAutomatonStates: 56, 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, 0.9s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 1036 SizeOfPredicates, 4 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 36/44 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! [2022-12-06 16:58:44,270 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...