/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:29:02,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:29:02,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:29:02,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:29:02,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:29:02,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:29:02,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:29:02,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:29:02,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:29:02,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:29:02,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:29:02,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:29:02,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:29:02,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:29:02,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:29:02,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:29:02,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:29:02,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:29:02,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:29:02,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:29:02,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:29:02,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:29:02,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:29:02,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:29:02,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:29:02,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:29:02,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:29:02,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:29:02,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:29:02,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:29:02,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:29:02,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:29:02,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:29:02,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:29:02,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:29:02,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:29:02,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:29:02,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:29:02,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:29:02,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:29:02,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:29:02,742 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 [2023-01-28 01:29:02,774 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:29:02,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:29:02,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:29:02,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:29:02,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:29:02,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:29:02,777 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:29:02,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:29:02,777 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:29:02,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:29:02,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:29:02,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:29:02,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:29:02,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:29:02,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:29:02,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:29:02,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:02,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:29:02,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:29:02,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:29:02,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:29:02,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:29:02,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:29:02,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:29:02,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:29:02,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:29:02,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:29:02,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:29:02,975 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:29:02,975 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:29:02,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-01-28 01:29:04,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:29:04,226 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:29:04,226 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-01-28 01:29:04,238 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c98b6d2/57de522a44254d55a0ba994594cd4002/FLAGbad77ca4d [2023-01-28 01:29:04,252 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c98b6d2/57de522a44254d55a0ba994594cd4002 [2023-01-28 01:29:04,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:29:04,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:29:04,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:04,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:29:04,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:29:04,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61927791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04, skipping insertion in model container [2023-01-28 01:29:04,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:29:04,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:29:04,479 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_69-refine-protected-loop-interval_true.i[1107,1120] [2023-01-28 01:29:04,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:04,646 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:29:04,656 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_69-refine-protected-loop-interval_true.i[1107,1120] [2023-01-28 01:29:04,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:04,732 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:29:04,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04 WrapperNode [2023-01-28 01:29:04,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:04,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:04,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:29:04,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:29:04,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,780 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2023-01-28 01:29:04,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:04,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:29:04,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:29:04,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:29:04,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:29:04,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:29:04,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:29:04,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:29:04,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (1/1) ... [2023-01-28 01:29:04,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:04,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:29:04,828 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) [2023-01-28 01:29:04,835 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 [2023-01-28 01:29:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-01-28 01:29:04,858 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-01-28 01:29:04,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:29:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:29:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:29:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:29:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:29:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:29:04,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:29:04,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:29:04,860 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:29:04,962 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:29:04,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:29:05,117 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:29:05,137 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:29:05,137 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 01:29:05,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:05 BoogieIcfgContainer [2023-01-28 01:29:05,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:29:05,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:29:05,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:29:05,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:29:05,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:29:04" (1/3) ... [2023-01-28 01:29:05,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a19f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:05, skipping insertion in model container [2023-01-28 01:29:05,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:04" (2/3) ... [2023-01-28 01:29:05,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a19f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:05, skipping insertion in model container [2023-01-28 01:29:05,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:05" (3/3) ... [2023-01-28 01:29:05,145 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-01-28 01:29:05,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:29:05,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 01:29:05,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:29:05,213 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 01:29:05,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 105 transitions, 215 flow [2023-01-28 01:29:05,302 INFO L130 PetriNetUnfolder]: 10/104 cut-off events. [2023-01-28 01:29:05,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:05,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 10/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-28 01:29:05,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 105 transitions, 215 flow [2023-01-28 01:29:05,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 104 transitions, 211 flow [2023-01-28 01:29:05,315 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:05,322 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 104 transitions, 211 flow [2023-01-28 01:29:05,325 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 104 transitions, 211 flow [2023-01-28 01:29:05,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 104 transitions, 211 flow [2023-01-28 01:29:05,349 INFO L130 PetriNetUnfolder]: 10/104 cut-off events. [2023-01-28 01:29:05,349 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:05,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 104 events. 10/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-01-28 01:29:05,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 2464 [2023-01-28 01:29:07,908 INFO L134 LiptonReduction]: Checked pairs total: 4564 [2023-01-28 01:29:07,908 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-01-28 01:29:07,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 01:29:07,927 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;@4c7a2068, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:07,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 01:29:07,931 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-01-28 01:29:07,932 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:07,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:07,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 01:29:07,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:07,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash -229213163, now seen corresponding path program 1 times [2023-01-28 01:29:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166039120] [2023-01-28 01:29:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166039120] [2023-01-28 01:29:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166039120] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:08,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:29:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 01:29:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086766802] [2023-01-28 01:29:08,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:29:08,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:29:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:29:08,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 203 [2023-01-28 01:29:08,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-01-28 01:29:08,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:08,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 203 [2023-01-28 01:29:08,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:08,425 INFO L130 PetriNetUnfolder]: 133/241 cut-off events. [2023-01-28 01:29:08,426 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:08,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 241 events. 133/241 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 735 event pairs, 64 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 477. Up to 191 conditions per place. [2023-01-28 01:29:08,430 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 30 selfloop transitions, 3 changer transitions 1/35 dead transitions. [2023-01-28 01:29:08,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 141 flow [2023-01-28 01:29:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:29:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:29:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-01-28 01:29:08,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2023-01-28 01:29:08,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-01-28 01:29:08,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-01-28 01:29:08,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:08,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-01-28 01:29:08,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-01-28 01:29:08,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-01-28 01:29:08,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-01-28 01:29:08,453 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 57 flow. Second operand 3 states and 287 transitions. [2023-01-28 01:29:08,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 141 flow [2023-01-28 01:29:08,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:29:08,457 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 78 flow [2023-01-28 01:29:08,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-28 01:29:08,461 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-01-28 01:29:08,461 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 78 flow [2023-01-28 01:29:08,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2023-01-28 01:29:08,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:08,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:08,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:29:08,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:08,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -96569422, now seen corresponding path program 1 times [2023-01-28 01:29:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:08,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668458560] [2023-01-28 01:29:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:08,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:08,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668458560] [2023-01-28 01:29:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668458560] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:08,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:29:08,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:29:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471275735] [2023-01-28 01:29:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:08,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 01:29:08,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 01:29:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 01:29:08,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-01-28 01:29:08,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-01-28 01:29:08,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:08,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-01-28 01:29:08,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:08,574 INFO L130 PetriNetUnfolder]: 23/71 cut-off events. [2023-01-28 01:29:08,575 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 01:29:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 71 events. 23/71 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 1 based on Foata normal form. 8/72 useless extension candidates. Maximal degree in co-relation 139. Up to 41 conditions per place. [2023-01-28 01:29:08,575 INFO L137 encePairwiseOnDemand]: 197/203 looper letters, 13 selfloop transitions, 6 changer transitions 3/29 dead transitions. [2023-01-28 01:29:08,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 126 flow [2023-01-28 01:29:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 01:29:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 01:29:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-01-28 01:29:08,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451559934318555 [2023-01-28 01:29:08,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-01-28 01:29:08,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-01-28 01:29:08,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:08,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-01-28 01:29:08,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-01-28 01:29:08,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-01-28 01:29:08,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2023-01-28 01:29:08,583 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 78 flow. Second operand 3 states and 275 transitions. [2023-01-28 01:29:08,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 126 flow [2023-01-28 01:29:08,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 01:29:08,584 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 76 flow [2023-01-28 01:29:08,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-01-28 01:29:08,585 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-01-28 01:29:08,585 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 76 flow [2023-01-28 01:29:08,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-01-28 01:29:08,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:08,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:08,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:29:08,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:08,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:08,587 INFO L85 PathProgramCache]: Analyzing trace with hash 621808453, now seen corresponding path program 1 times [2023-01-28 01:29:08,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:08,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027911380] [2023-01-28 01:29:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:08,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027911380] [2023-01-28 01:29:08,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027911380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:08,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:29:08,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 01:29:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531393543] [2023-01-28 01:29:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:08,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 01:29:08,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 01:29:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 01:29:08,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2023-01-28 01:29:08,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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) [2023-01-28 01:29:08,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:08,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2023-01-28 01:29:08,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:08,720 INFO L130 PetriNetUnfolder]: 27/86 cut-off events. [2023-01-28 01:29:08,720 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:29:08,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 86 events. 27/86 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 13 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 205. Up to 37 conditions per place. [2023-01-28 01:29:08,721 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 26 selfloop transitions, 8 changer transitions 3/38 dead transitions. [2023-01-28 01:29:08,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 190 flow [2023-01-28 01:29:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 01:29:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 01:29:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 519 transitions. [2023-01-28 01:29:08,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42610837438423643 [2023-01-28 01:29:08,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 519 transitions. [2023-01-28 01:29:08,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 519 transitions. [2023-01-28 01:29:08,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:08,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 519 transitions. [2023-01-28 01:29:08,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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) [2023-01-28 01:29:08,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-01-28 01:29:08,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-01-28 01:29:08,729 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 76 flow. Second operand 6 states and 519 transitions. [2023-01-28 01:29:08,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 190 flow [2023-01-28 01:29:08,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:29:08,731 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 124 flow [2023-01-28 01:29:08,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-01-28 01:29:08,732 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-01-28 01:29:08,732 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 124 flow [2023-01-28 01:29:08,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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) [2023-01-28 01:29:08,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:08,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:08,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:29:08,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:08,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2096193476, now seen corresponding path program 1 times [2023-01-28 01:29:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:08,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17076045] [2023-01-28 01:29:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:08,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:08,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17076045] [2023-01-28 01:29:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17076045] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:08,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:29:08,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 01:29:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092808242] [2023-01-28 01:29:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:08,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 01:29:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:08,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 01:29:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 01:29:08,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2023-01-28 01:29:08,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-01-28 01:29:08,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:08,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2023-01-28 01:29:08,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:08,892 INFO L130 PetriNetUnfolder]: 36/108 cut-off events. [2023-01-28 01:29:08,892 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-01-28 01:29:08,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 108 events. 36/108 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 257 event pairs, 9 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 295. Up to 41 conditions per place. [2023-01-28 01:29:08,895 INFO L137 encePairwiseOnDemand]: 196/203 looper letters, 43 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2023-01-28 01:29:08,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 354 flow [2023-01-28 01:29:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 01:29:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 01:29:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-01-28 01:29:08,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433497536945813 [2023-01-28 01:29:08,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-01-28 01:29:08,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-01-28 01:29:08,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:08,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-01-28 01:29:08,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2023-01-28 01:29:08,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-01-28 01:29:08,901 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-01-28 01:29:08,902 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 124 flow. Second operand 5 states and 450 transitions. [2023-01-28 01:29:08,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 354 flow [2023-01-28 01:29:08,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 01:29:08,908 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 216 flow [2023-01-28 01:29:08,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-01-28 01:29:08,914 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-01-28 01:29:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 216 flow [2023-01-28 01:29:08,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-01-28 01:29:08,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:08,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:29:08,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:08,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1853009078, now seen corresponding path program 2 times [2023-01-28 01:29:08,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:08,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858856986] [2023-01-28 01:29:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:08,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:09,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858856986] [2023-01-28 01:29:09,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858856986] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 01:29:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393837397] [2023-01-28 01:29:09,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 01:29:09,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 01:29:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:29:09,063 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) [2023-01-28 01:29:09,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 01:29:09,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 01:29:09,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 01:29:09,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 01:29:09,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 01:29:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:09,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 01:29:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393837397] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:09,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 01:29:09,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-01-28 01:29:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113202631] [2023-01-28 01:29:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:09,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 01:29:09,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:09,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 01:29:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 01:29:09,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2023-01-28 01:29:09,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 82.28571428571429) internal successors, (576), 7 states have internal predecessors, (576), 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) [2023-01-28 01:29:09,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:09,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2023-01-28 01:29:09,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:09,395 INFO L130 PetriNetUnfolder]: 42/130 cut-off events. [2023-01-28 01:29:09,396 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-28 01:29:09,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 130 events. 42/130 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 329 event pairs, 19 based on Foata normal form. 4/134 useless extension candidates. Maximal degree in co-relation 399. Up to 55 conditions per place. [2023-01-28 01:29:09,397 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 41 selfloop transitions, 13 changer transitions 3/58 dead transitions. [2023-01-28 01:29:09,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 416 flow [2023-01-28 01:29:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 01:29:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 01:29:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 770 transitions. [2023-01-28 01:29:09,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421455938697318 [2023-01-28 01:29:09,399 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 770 transitions. [2023-01-28 01:29:09,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 770 transitions. [2023-01-28 01:29:09,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:09,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 770 transitions. [2023-01-28 01:29:09,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.55555555555556) internal successors, (770), 9 states have internal predecessors, (770), 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) [2023-01-28 01:29:09,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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) [2023-01-28 01:29:09,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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) [2023-01-28 01:29:09,406 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 216 flow. Second operand 9 states and 770 transitions. [2023-01-28 01:29:09,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 416 flow [2023-01-28 01:29:09,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 01:29:09,409 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 298 flow [2023-01-28 01:29:09,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-01-28 01:29:09,410 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 24 predicate places. [2023-01-28 01:29:09,410 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 298 flow [2023-01-28 01:29:09,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.28571428571429) internal successors, (576), 7 states have internal predecessors, (576), 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) [2023-01-28 01:29:09,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:09,411 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:09,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 01:29:09,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 01:29:09,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:09,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash 857022769, now seen corresponding path program 1 times [2023-01-28 01:29:09,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:09,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451913179] [2023-01-28 01:29:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:09,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:09,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:09,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451913179] [2023-01-28 01:29:09,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451913179] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:09,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:29:09,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 01:29:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867570398] [2023-01-28 01:29:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:09,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 01:29:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 01:29:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 01:29:09,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2023-01-28 01:29:09,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2023-01-28 01:29:09,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:09,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2023-01-28 01:29:09,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:09,788 INFO L130 PetriNetUnfolder]: 47/144 cut-off events. [2023-01-28 01:29:09,788 INFO L131 PetriNetUnfolder]: For 322/322 co-relation queries the response was YES. [2023-01-28 01:29:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 144 events. 47/144 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 16 based on Foata normal form. 2/146 useless extension candidates. Maximal degree in co-relation 493. Up to 57 conditions per place. [2023-01-28 01:29:09,790 INFO L137 encePairwiseOnDemand]: 195/203 looper letters, 34 selfloop transitions, 18 changer transitions 7/60 dead transitions. [2023-01-28 01:29:09,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 507 flow [2023-01-28 01:29:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 01:29:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 01:29:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2023-01-28 01:29:09,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318555008210181 [2023-01-28 01:29:09,792 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 526 transitions. [2023-01-28 01:29:09,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 526 transitions. [2023-01-28 01:29:09,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:09,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 526 transitions. [2023-01-28 01:29:09,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 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) [2023-01-28 01:29:09,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-01-28 01:29:09,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2023-01-28 01:29:09,797 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 298 flow. Second operand 6 states and 526 transitions. [2023-01-28 01:29:09,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 507 flow [2023-01-28 01:29:09,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 483 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 01:29:09,804 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 360 flow [2023-01-28 01:29:09,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-01-28 01:29:09,807 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-01-28 01:29:09,807 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 360 flow [2023-01-28 01:29:09,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2023-01-28 01:29:09,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:09,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:09,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:29:09,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 01:29:09,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1251347832, now seen corresponding path program 2 times [2023-01-28 01:29:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056643768] [2023-01-28 01:29:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 01:29:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 01:29:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 01:29:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056643768] [2023-01-28 01:29:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056643768] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 01:29:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 01:29:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 01:29:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084066506] [2023-01-28 01:29:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 01:29:09,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 01:29:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 01:29:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 01:29:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 01:29:09,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-01-28 01:29:09,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 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) [2023-01-28 01:29:09,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 01:29:09,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-01-28 01:29:09,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 01:29:09,988 INFO L130 PetriNetUnfolder]: 44/135 cut-off events. [2023-01-28 01:29:09,988 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2023-01-28 01:29:09,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 135 events. 44/135 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 19 based on Foata normal form. 2/137 useless extension candidates. Maximal degree in co-relation 487. Up to 83 conditions per place. [2023-01-28 01:29:09,989 INFO L137 encePairwiseOnDemand]: 194/203 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-01-28 01:29:09,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 461 flow [2023-01-28 01:29:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 01:29:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 01:29:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2023-01-28 01:29:09,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40464461646727656 [2023-01-28 01:29:09,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2023-01-28 01:29:09,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2023-01-28 01:29:09,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 01:29:09,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2023-01-28 01:29:09,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 01:29:09,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2023-01-28 01:29:09,996 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2023-01-28 01:29:09,996 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 360 flow. Second operand 7 states and 575 transitions. [2023-01-28 01:29:09,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 461 flow [2023-01-28 01:29:09,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 432 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 01:29:09,998 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-01-28 01:29:09,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-01-28 01:29:09,999 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-01-28 01:29:09,999 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-01-28 01:29:10,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 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) [2023-01-28 01:29:10,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-01-28 01:29:10,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-28 01:29:10,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-01-28 01:29:10,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-01-28 01:29:10,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-28 01:29:10,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:29:10,004 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-01-28 01:29:10,009 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 01:29:10,009 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 01:29:10,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 01:29:10 BasicIcfg [2023-01-28 01:29:10,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 01:29:10,019 INFO L158 Benchmark]: Toolchain (without parser) took 5763.47ms. Allocated memory was 350.2MB in the beginning and 421.5MB in the end (delta: 71.3MB). Free memory was 290.7MB in the beginning and 365.6MB in the end (delta: -74.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:29:10,019 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 01:29:10,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.77ms. Allocated memory is still 350.2MB. Free memory was 290.5MB in the beginning and 314.7MB in the end (delta: -24.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.0GB. [2023-01-28 01:29:10,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:29:10,022 INFO L158 Benchmark]: Boogie Preprocessor took 20.40ms. Allocated memory is still 350.2MB. Free memory was 312.6MB in the beginning and 311.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 01:29:10,022 INFO L158 Benchmark]: RCFGBuilder took 337.22ms. Allocated memory is still 350.2MB. Free memory was 311.1MB in the beginning and 296.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 01:29:10,023 INFO L158 Benchmark]: TraceAbstraction took 4878.41ms. Allocated memory was 350.2MB in the beginning and 421.5MB in the end (delta: 71.3MB). Free memory was 296.4MB in the beginning and 365.6MB in the end (delta: -69.2MB). Peak memory consumption was 1.1MB. Max. memory is 16.0GB. [2023-01-28 01:29:10,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 474.77ms. Allocated memory is still 350.2MB. Free memory was 290.5MB in the beginning and 314.7MB in the end (delta: -24.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 312.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.40ms. Allocated memory is still 350.2MB. Free memory was 312.6MB in the beginning and 311.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 337.22ms. Allocated memory is still 350.2MB. Free memory was 311.1MB in the beginning and 296.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4878.41ms. Allocated memory was 350.2MB in the beginning and 421.5MB in the end (delta: 71.3MB). Free memory was 296.4MB in the beginning and 365.6MB in the end (delta: -69.2MB). Peak memory consumption was 1.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 98 PlacesBefore, 25 PlacesAfterwards, 104 TransitionsBefore, 27 TransitionsAfterwards, 2464 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 4 ChoiceCompositions, 98 TotalNumberOfCompositions, 4564 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3003, independent: 2829, independent conditional: 0, independent unconditional: 2829, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1388, independent: 1351, independent conditional: 0, independent unconditional: 1351, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3003, independent: 1478, independent conditional: 0, independent unconditional: 1478, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 1388, unknown conditional: 0, unknown unconditional: 1388] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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, 135 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 17 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 271 SizeOfPredicates, 4 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 15/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 01:29:10,043 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...