/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:04:38,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:04:38,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:04:38,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:04:38,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:04:38,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:04:38,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:04:38,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:04:38,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:04:38,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:04:38,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:04:38,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:04:38,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:04:38,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:04:38,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:04:38,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:04:38,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:04:38,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:04:38,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:04:38,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:04:38,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:04:38,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:04:38,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:04:38,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:04:38,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 19:04:38,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 19:04:38,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 19:04:38,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 19:04:38,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 19:04:38,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 19:04:38,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:04:38,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:04:38,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:04:38,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:04:38,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:04:38,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:04:38,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:04:38,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:04:38,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:04:38,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:04:38,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:04:38,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:04:38,759 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:04:38,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:04:38,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:04:38,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:04:38,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:04:38,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:04:38,762 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:04:38,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:04:38,762 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:04:38,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:04:38,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:04:38,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:04:38,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:04:38,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:04:38,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:04:38,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:04:38,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:04:38,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:04:38,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:04:38,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:04:38,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:04:38,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:04:38,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:04:38,773 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:04:39,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:04:39,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:04:39,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:04:39,101 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:04:39,101 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:04:39,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-01-27 19:04:40,476 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:04:40,836 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:04:40,836 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-01-27 19:04:40,861 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0589d1c97/01d49e654b5e4bb5a1107d5386b3c325/FLAGb3f61b4a1 [2023-01-27 19:04:40,875 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0589d1c97/01d49e654b5e4bb5a1107d5386b3c325 [2023-01-27 19:04:40,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:04:40,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:04:40,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:04:40,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:04:40,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:04:40,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:04:40" (1/1) ... [2023-01-27 19:04:40,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4364be93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:40, skipping insertion in model container [2023-01-27 19:04:40,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:04:40" (1/1) ... [2023-01-27 19:04:40,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:04:40,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:04:41,152 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-01-27 19:04:41,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:04:41,395 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:04:41,417 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-01-27 19:04:41,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:04:41,508 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:04:41,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41 WrapperNode [2023-01-27 19:04:41,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:04:41,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:04:41,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:04:41,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:04:41,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,595 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-01-27 19:04:41,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:04:41,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:04:41,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:04:41,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:04:41,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:04:41,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:04:41,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:04:41,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:04:41,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (1/1) ... [2023-01-27 19:04:41,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:04:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:04:41,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:04:41,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-01-27 19:04:41,771 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:04:41,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:04:41,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:04:41,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:04:41,773 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:04:41,983 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:04:41,984 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:04:42,288 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:04:42,294 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:04:42,294 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 19:04:42,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:04:42 BoogieIcfgContainer [2023-01-27 19:04:42,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:04:42,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:04:42,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:04:42,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:04:42,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:04:40" (1/3) ... [2023-01-27 19:04:42,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:04:42, skipping insertion in model container [2023-01-27 19:04:42,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:04:41" (2/3) ... [2023-01-27 19:04:42,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:04:42, skipping insertion in model container [2023-01-27 19:04:42,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:04:42" (3/3) ... [2023-01-27 19:04:42,302 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-01-27 19:04:42,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:04:42,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 19:04:42,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:04:42,473 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 19:04:42,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 261 flow [2023-01-27 19:04:42,608 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-01-27 19:04:42,608 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:04:42,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-01-27 19:04:42,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 128 transitions, 261 flow [2023-01-27 19:04:42,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 127 transitions, 257 flow [2023-01-27 19:04:42,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:04:42,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 127 transitions, 257 flow [2023-01-27 19:04:42,644 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 127 transitions, 257 flow [2023-01-27 19:04:42,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 257 flow [2023-01-27 19:04:42,697 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-01-27 19:04:42,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:04:42,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-01-27 19:04:42,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 3920 [2023-01-27 19:04:47,032 INFO L134 LiptonReduction]: Checked pairs total: 5367 [2023-01-27 19:04:47,032 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-01-27 19:04:47,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:04:47,061 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;@792c8904, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:04:47,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 19:04:47,066 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-27 19:04:47,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:04:47,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:47,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 19:04:47,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:47,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:47,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2035688472, now seen corresponding path program 1 times [2023-01-27 19:04:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:47,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212683052] [2023-01-27 19:04:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:47,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212683052] [2023-01-27 19:04:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212683052] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:04:47,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:04:47,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:04:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331144861] [2023-01-27 19:04:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:48,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:04:48,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:04:48,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:04:48,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 253 [2023-01-27 19:04:48,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:48,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 253 [2023-01-27 19:04:48,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:48,220 INFO L130 PetriNetUnfolder]: 135/242 cut-off events. [2023-01-27 19:04:48,220 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:04:48,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 242 events. 135/242 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 708 event pairs, 54 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 479. Up to 198 conditions per place. [2023-01-27 19:04:48,225 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 36 selfloop transitions, 4 changer transitions 2/43 dead transitions. [2023-01-27 19:04:48,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 43 transitions, 173 flow [2023-01-27 19:04:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:04:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:04:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-01-27 19:04:48,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031620553359684 [2023-01-27 19:04:48,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-01-27 19:04:48,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-01-27 19:04:48,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:48,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-01-27 19:04:48,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,282 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 57 flow. Second operand 4 states and 408 transitions. [2023-01-27 19:04:48,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 43 transitions, 173 flow [2023-01-27 19:04:48,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:04:48,286 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 79 flow [2023-01-27 19:04:48,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-01-27 19:04:48,305 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-01-27 19:04:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 79 flow [2023-01-27 19:04:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:48,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:04:48,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:48,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -821612424, now seen corresponding path program 1 times [2023-01-27 19:04:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:48,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068604501] [2023-01-27 19:04:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:48,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:48,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068604501] [2023-01-27 19:04:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068604501] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:04:48,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:04:48,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:04:48,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814564841] [2023-01-27 19:04:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:04:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:04:48,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:04:48,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-01-27 19:04:48,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:48,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-01-27 19:04:48,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:48,635 INFO L130 PetriNetUnfolder]: 197/359 cut-off events. [2023-01-27 19:04:48,635 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-27 19:04:48,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 359 events. 197/359 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1162 event pairs, 39 based on Foata normal form. 14/307 useless extension candidates. Maximal degree in co-relation 781. Up to 226 conditions per place. [2023-01-27 19:04:48,638 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-01-27 19:04:48,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 211 flow [2023-01-27 19:04:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:04:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:04:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-01-27 19:04:48,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400527009222661 [2023-01-27 19:04:48,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-01-27 19:04:48,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-01-27 19:04:48,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:48,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-01-27 19:04:48,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,642 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 79 flow. Second operand 3 states and 334 transitions. [2023-01-27 19:04:48,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 211 flow [2023-01-27 19:04:48,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:04:48,657 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 114 flow [2023-01-27 19:04:48,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-01-27 19:04:48,657 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-01-27 19:04:48,658 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 114 flow [2023-01-27 19:04:48,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:48,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:48,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:04:48,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:48,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash 178518608, now seen corresponding path program 2 times [2023-01-27 19:04:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973204040] [2023-01-27 19:04:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973204040] [2023-01-27 19:04:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973204040] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:04:48,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:04:48,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:04:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420237200] [2023-01-27 19:04:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:04:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:04:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:04:48,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 253 [2023-01-27 19:04:48,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:48,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 253 [2023-01-27 19:04:48,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:48,919 INFO L130 PetriNetUnfolder]: 29/78 cut-off events. [2023-01-27 19:04:48,919 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-01-27 19:04:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 78 events. 29/78 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 1 based on Foata normal form. 12/82 useless extension candidates. Maximal degree in co-relation 193. Up to 47 conditions per place. [2023-01-27 19:04:48,919 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 23 selfloop transitions, 3 changer transitions 2/29 dead transitions. [2023-01-27 19:04:48,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 151 flow [2023-01-27 19:04:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:04:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:04:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-01-27 19:04:48,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2023-01-27 19:04:48,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-01-27 19:04:48,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-01-27 19:04:48,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:48,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-01-27 19:04:48,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,923 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 114 flow. Second operand 3 states and 309 transitions. [2023-01-27 19:04:48,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 151 flow [2023-01-27 19:04:48,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 141 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 19:04:48,925 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 84 flow [2023-01-27 19:04:48,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-27 19:04:48,926 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-01-27 19:04:48,926 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 84 flow [2023-01-27 19:04:48,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:48,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:48,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:48,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:04:48,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:48,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash 206580876, now seen corresponding path program 1 times [2023-01-27 19:04:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136323180] [2023-01-27 19:04:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136323180] [2023-01-27 19:04:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136323180] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:04:49,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:04:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 19:04:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42616822] [2023-01-27 19:04:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:49,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 19:04:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 19:04:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-27 19:04:49,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 253 [2023-01-27 19:04:49,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 85.375) internal successors, (683), 8 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:49,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 253 [2023-01-27 19:04:49,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:49,629 INFO L130 PetriNetUnfolder]: 29/89 cut-off events. [2023-01-27 19:04:49,629 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-27 19:04:49,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 89 events. 29/89 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 9 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 219. Up to 58 conditions per place. [2023-01-27 19:04:49,629 INFO L137 encePairwiseOnDemand]: 243/253 looper letters, 34 selfloop transitions, 8 changer transitions 1/44 dead transitions. [2023-01-27 19:04:49,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 224 flow [2023-01-27 19:04:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 19:04:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 19:04:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 719 transitions. [2023-01-27 19:04:49,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35523715415019763 [2023-01-27 19:04:49,631 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 719 transitions. [2023-01-27 19:04:49,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 719 transitions. [2023-01-27 19:04:49,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:49,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 719 transitions. [2023-01-27 19:04:49,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 253.0) internal successors, (2277), 9 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,636 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 253.0) internal successors, (2277), 9 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,653 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 84 flow. Second operand 8 states and 719 transitions. [2023-01-27 19:04:49,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 224 flow [2023-01-27 19:04:49,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 210 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-27 19:04:49,658 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 144 flow [2023-01-27 19:04:49,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-01-27 19:04:49,659 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-01-27 19:04:49,660 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 144 flow [2023-01-27 19:04:49,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.375) internal successors, (683), 8 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:49,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:49,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 19:04:49,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:49,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash 429077015, now seen corresponding path program 1 times [2023-01-27 19:04:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:49,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000675764] [2023-01-27 19:04:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:49,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000675764] [2023-01-27 19:04:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000675764] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:04:49,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:04:49,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:04:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962068423] [2023-01-27 19:04:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:49,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:04:49,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:04:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:04:49,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 253 [2023-01-27 19:04:49,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:49,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 253 [2023-01-27 19:04:49,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:49,848 INFO L130 PetriNetUnfolder]: 37/105 cut-off events. [2023-01-27 19:04:49,848 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-01-27 19:04:49,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 105 events. 37/105 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 3 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 292. Up to 34 conditions per place. [2023-01-27 19:04:49,849 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 43 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2023-01-27 19:04:49,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 345 flow [2023-01-27 19:04:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 19:04:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 19:04:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2023-01-27 19:04:49,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968379446640316 [2023-01-27 19:04:49,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2023-01-27 19:04:49,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2023-01-27 19:04:49,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:49,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2023-01-27 19:04:49,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,868 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 144 flow. Second operand 5 states and 502 transitions. [2023-01-27 19:04:49,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 345 flow [2023-01-27 19:04:49,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 334 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 19:04:49,872 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 195 flow [2023-01-27 19:04:49,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-01-27 19:04:49,874 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2023-01-27 19:04:49,874 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 195 flow [2023-01-27 19:04:49,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:49,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:49,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 19:04:49,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:49,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 834094987, now seen corresponding path program 2 times [2023-01-27 19:04:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:49,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101056831] [2023-01-27 19:04:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:49,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101056831] [2023-01-27 19:04:50,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101056831] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:04:50,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822557533] [2023-01-27 19:04:50,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:04:50,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:04:50,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:04:50,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:04:50,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:04:50,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:04:50,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:04:50,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-27 19:04:50,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:04:50,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-01-27 19:04:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 19:04:50,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 19:04:51,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-27 19:04:51,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-27 19:04:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:51,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 19:04:51,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822557533] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:04:51,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 19:04:51,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-01-27 19:04:51,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127010384] [2023-01-27 19:04:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:51,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 19:04:51,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 19:04:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-01-27 19:04:51,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 253 [2023-01-27 19:04:51,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 195 flow. Second operand has 10 states, 10 states have (on average 85.6) internal successors, (856), 10 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:51,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:51,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 253 [2023-01-27 19:04:51,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:51,575 INFO L130 PetriNetUnfolder]: 35/107 cut-off events. [2023-01-27 19:04:51,575 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-27 19:04:51,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 107 events. 35/107 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 243 event pairs, 5 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 337. Up to 55 conditions per place. [2023-01-27 19:04:51,576 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 45 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2023-01-27 19:04:51,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 394 flow [2023-01-27 19:04:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 19:04:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 19:04:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 897 transitions. [2023-01-27 19:04:51,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2023-01-27 19:04:51,579 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 897 transitions. [2023-01-27 19:04:51,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 897 transitions. [2023-01-27 19:04:51,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:51,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 897 transitions. [2023-01-27 19:04:51,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.7) internal successors, (897), 10 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:51,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:51,583 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:51,583 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 195 flow. Second operand 10 states and 897 transitions. [2023-01-27 19:04:51,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 394 flow [2023-01-27 19:04:51,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 386 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:04:51,586 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 253 flow [2023-01-27 19:04:51,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-01-27 19:04:51,587 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2023-01-27 19:04:51,588 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 253 flow [2023-01-27 19:04:51,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.6) internal successors, (856), 10 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:51,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:51,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:51,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:04:51,794 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 [2023-01-27 19:04:51,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:51,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:51,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1758691163, now seen corresponding path program 1 times [2023-01-27 19:04:51,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:51,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375774292] [2023-01-27 19:04:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:52,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375774292] [2023-01-27 19:04:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375774292] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:04:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683007063] [2023-01-27 19:04:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:52,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:04:52,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:04:52,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:04:52,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:04:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:52,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-27 19:04:52,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:04:52,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-01-27 19:04:52,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 19:04:52,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 19:04:53,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-01-27 19:04:53,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-01-27 19:04:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:53,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:04:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:53,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683007063] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 19:04:53,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:04:53,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 8] total 30 [2023-01-27 19:04:53,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141543321] [2023-01-27 19:04:53,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:04:53,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 19:04:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 19:04:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2023-01-27 19:04:53,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 253 [2023-01-27 19:04:53,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 253 flow. Second operand has 12 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:53,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:53,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 253 [2023-01-27 19:04:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:54,814 INFO L130 PetriNetUnfolder]: 86/239 cut-off events. [2023-01-27 19:04:54,814 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-01-27 19:04:54,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 239 events. 86/239 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 805 event pairs, 12 based on Foata normal form. 20/259 useless extension candidates. Maximal degree in co-relation 790. Up to 59 conditions per place. [2023-01-27 19:04:54,816 INFO L137 encePairwiseOnDemand]: 238/253 looper letters, 58 selfloop transitions, 39 changer transitions 32/130 dead transitions. [2023-01-27 19:04:54,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 923 flow [2023-01-27 19:04:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 19:04:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 19:04:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2151 transitions. [2023-01-27 19:04:54,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32699908786865306 [2023-01-27 19:04:54,829 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2151 transitions. [2023-01-27 19:04:54,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2151 transitions. [2023-01-27 19:04:54,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:54,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2151 transitions. [2023-01-27 19:04:54,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.73076923076923) internal successors, (2151), 26 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:54,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 253.0) internal successors, (6831), 27 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:54,843 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 253.0) internal successors, (6831), 27 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:54,843 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 253 flow. Second operand 26 states and 2151 transitions. [2023-01-27 19:04:54,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 923 flow [2023-01-27 19:04:54,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 903 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-27 19:04:54,847 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 569 flow [2023-01-27 19:04:54,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=569, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2023-01-27 19:04:54,848 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 60 predicate places. [2023-01-27 19:04:54,848 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 569 flow [2023-01-27 19:04:54,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:54,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:04:54,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:04:54,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 19:04:55,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-01-27 19:04:55,054 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-27 19:04:55,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:04:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1932590508, now seen corresponding path program 2 times [2023-01-27 19:04:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:04:55,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984271764] [2023-01-27 19:04:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:04:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:04:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:04:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 19:04:56,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:04:56,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984271764] [2023-01-27 19:04:56,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984271764] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:04:56,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933969200] [2023-01-27 19:04:56,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:04:56,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:04:56,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:04:56,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:04:56,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:04:56,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:04:56,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:04:56,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-27 19:04:56,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:04:56,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-27 19:04:56,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-27 19:04:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:56,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:04:56,765 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-27 19:04:56,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-01-27 19:04:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:04:56,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933969200] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:04:56,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:04:56,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 30 [2023-01-27 19:04:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780135578] [2023-01-27 19:04:56,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:04:56,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 19:04:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:04:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 19:04:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2023-01-27 19:04:56,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 253 [2023-01-27 19:04:56,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 569 flow. Second operand has 30 states, 30 states have (on average 80.06666666666666) internal successors, (2402), 30 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:56,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:04:56,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 253 [2023-01-27 19:04:56,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:04:57,432 INFO L130 PetriNetUnfolder]: 49/164 cut-off events. [2023-01-27 19:04:57,432 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-01-27 19:04:57,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 164 events. 49/164 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 445 event pairs, 9 based on Foata normal form. 14/178 useless extension candidates. Maximal degree in co-relation 658. Up to 83 conditions per place. [2023-01-27 19:04:57,433 INFO L137 encePairwiseOnDemand]: 239/253 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-01-27 19:04:57,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 745 flow [2023-01-27 19:04:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 19:04:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 19:04:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1295 transitions. [2023-01-27 19:04:57,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3199110671936759 [2023-01-27 19:04:57,438 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1295 transitions. [2023-01-27 19:04:57,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1295 transitions. [2023-01-27 19:04:57,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:04:57,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1295 transitions. [2023-01-27 19:04:57,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 80.9375) internal successors, (1295), 16 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:57,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 253.0) internal successors, (4301), 17 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:57,446 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 253.0) internal successors, (4301), 17 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:57,446 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 569 flow. Second operand 16 states and 1295 transitions. [2023-01-27 19:04:57,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 745 flow [2023-01-27 19:04:57,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 645 flow, removed 42 selfloop flow, removed 5 redundant places. [2023-01-27 19:04:57,450 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2023-01-27 19:04:57,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2023-01-27 19:04:57,451 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2023-01-27 19:04:57,452 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2023-01-27 19:04:57,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 80.06666666666666) internal successors, (2402), 30 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:04:57,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-01-27 19:04:57,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-27 19:04:57,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-01-27 19:04:57,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-01-27 19:04:57,455 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-27 19:04:57,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:04:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:04:57,661 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1] [2023-01-27 19:04:57,664 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:04:57,664 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:04:57,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:04:57 BasicIcfg [2023-01-27 19:04:57,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:04:57,666 INFO L158 Benchmark]: Toolchain (without parser) took 16780.26ms. Allocated memory was 308.3MB in the beginning and 503.3MB in the end (delta: 195.0MB). Free memory was 257.1MB in the beginning and 335.8MB in the end (delta: -78.7MB). Peak memory consumption was 119.3MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,667 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 308.3MB. Free memory was 257.5MB in the beginning and 257.2MB in the end (delta: 260.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.45ms. Allocated memory is still 308.3MB. Free memory was 257.1MB in the beginning and 237.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.29ms. Allocated memory is still 308.3MB. Free memory was 237.3MB in the beginning and 235.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,667 INFO L158 Benchmark]: Boogie Preprocessor took 39.03ms. Allocated memory is still 308.3MB. Free memory was 235.2MB in the beginning and 233.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,670 INFO L158 Benchmark]: RCFGBuilder took 659.67ms. Allocated memory is still 308.3MB. Free memory was 233.5MB in the beginning and 217.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,670 INFO L158 Benchmark]: TraceAbstraction took 15368.03ms. Allocated memory was 308.3MB in the beginning and 503.3MB in the end (delta: 195.0MB). Free memory was 217.0MB in the beginning and 335.8MB in the end (delta: -118.8MB). Peak memory consumption was 79.4MB. Max. memory is 16.0GB. [2023-01-27 19:04:57,672 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 308.3MB. Free memory was 257.5MB in the beginning and 257.2MB in the end (delta: 260.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 620.45ms. Allocated memory is still 308.3MB. Free memory was 257.1MB in the beginning and 237.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 86.29ms. Allocated memory is still 308.3MB. Free memory was 237.3MB in the beginning and 235.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.03ms. Allocated memory is still 308.3MB. Free memory was 235.2MB in the beginning and 233.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 659.67ms. Allocated memory is still 308.3MB. Free memory was 233.5MB in the beginning and 217.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 15368.03ms. Allocated memory was 308.3MB in the beginning and 503.3MB in the end (delta: 195.0MB). Free memory was 217.0MB in the beginning and 335.8MB in the end (delta: -118.8MB). Peak memory consumption was 79.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 121 PlacesBefore, 25 PlacesAfterwards, 127 TransitionsBefore, 27 TransitionsAfterwards, 3920 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 5367 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3848, independent: 3700, independent conditional: 0, independent unconditional: 3700, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2274, independent: 2234, independent conditional: 0, independent unconditional: 2234, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3848, independent: 1466, independent conditional: 0, independent unconditional: 1466, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 2274, unknown conditional: 0, unknown unconditional: 2274] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 170 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 340 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 340 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1375 IncrementalHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 0 mSDtfsCounter, 1375 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=7, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 203 ConstructedInterpolants, 7 QuantifiedInterpolants, 2826 SizeOfPredicates, 70 NumberOfNonLiveVariables, 681 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 26/37 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! [2023-01-27 19:04:57,707 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...