./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:42:43,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:42:43,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:42:43,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:42:43,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:42:43,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:42:43,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:42:43,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:42:43,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:42:43,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:42:43,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:42:43,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:42:43,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:42:43,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:42:43,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:42:43,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:42:43,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:42:43,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:42:43,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:42:43,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:42:43,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:42:43,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:42:43,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:42:43,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:42:43,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:42:43,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:42:43,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:42:43,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:42:43,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:42:43,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:42:43,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:42:43,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:42:43,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:42:43,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:42:43,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:42:43,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:42:43,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:42:43,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:42:43,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:42:43,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:42:43,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:42:43,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:42:43,346 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:42:43,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:42:43,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:42:43,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:42:43,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:42:43,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:42:43,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:42:43,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:42:43,352 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:42:43,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:42:43,353 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:42:43,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:42:43,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:42:43,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:42:43,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:42:43,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:42:43,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:42:43,354 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:42:43,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:42:43,354 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:42:43,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:42:43,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:42:43,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:42:43,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:42:43,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:42:43,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:42:43,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:42:43,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:42:43,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:42:43,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:42:43,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:42:43,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:42:43,357 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:42:43,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:42:43,357 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:42:43,358 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:42:43,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:42:43,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:42:43,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:42:43,657 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:42:43,658 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:42:43,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-09-01 10:42:44,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:42:45,062 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:42:45,063 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-09-01 10:42:45,074 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379a5776c/8b469de399674bddbfdf9b98fb44498b/FLAGcbd040ef8 [2023-09-01 10:42:45,086 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379a5776c/8b469de399674bddbfdf9b98fb44498b [2023-09-01 10:42:45,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:42:45,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:42:45,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:42:45,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:42:45,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:42:45,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d703b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45, skipping insertion in model container [2023-09-01 10:42:45,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:42:45,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:42:45,334 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_24-multiple-protecting_true.i[1096,1109] [2023-09-01 10:42:45,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:42:45,524 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:42:45,537 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_24-multiple-protecting_true.i[1096,1109] [2023-09-01 10:42:45,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:42:45,616 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:42:45,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45 WrapperNode [2023-09-01 10:42:45,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:42:45,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:42:45,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:42:45,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:42:45,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,685 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2023-09-01 10:42:45,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:42:45,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:42:45,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:42:45,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:42:45,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:42:45,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:42:45,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:42:45,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:42:45,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (1/1) ... [2023-09-01 10:42:45,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:42:45,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:42:45,758 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) [2023-09-01 10:42:45,767 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 [2023-09-01 10:42:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:42:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:42:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:42:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:42:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:42:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:42:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:42:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:42:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:42:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:42:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:42:45,797 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:42:45,950 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:42:45,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:42:46,157 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:42:46,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:42:46,164 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 10:42:46,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:42:46 BoogieIcfgContainer [2023-09-01 10:42:46,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:42:46,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:42:46,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:42:46,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:42:46,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:42:45" (1/3) ... [2023-09-01 10:42:46,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55301508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:42:46, skipping insertion in model container [2023-09-01 10:42:46,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:42:45" (2/3) ... [2023-09-01 10:42:46,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55301508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:42:46, skipping insertion in model container [2023-09-01 10:42:46,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:42:46" (3/3) ... [2023-09-01 10:42:46,172 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-09-01 10:42:46,179 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:42:46,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:42:46,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 10:42:46,187 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:42:46,240 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:42:46,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 131 transitions, 270 flow [2023-09-01 10:42:46,318 INFO L130 PetriNetUnfolder]: 4/130 cut-off events. [2023-09-01 10:42:46,318 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:42:46,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 4/130 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-09-01 10:42:46,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 131 transitions, 270 flow [2023-09-01 10:42:46,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 117 transitions, 237 flow [2023-09-01 10:42:46,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:42:46,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 117 transitions, 237 flow [2023-09-01 10:42:46,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 117 transitions, 237 flow [2023-09-01 10:42:46,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 117 transitions, 237 flow [2023-09-01 10:42:46,377 INFO L130 PetriNetUnfolder]: 3/117 cut-off events. [2023-09-01 10:42:46,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:42:46,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 117 events. 3/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-09-01 10:42:46,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 3102 [2023-09-01 10:42:49,439 INFO L134 LiptonReduction]: Checked pairs total: 9364 [2023-09-01 10:42:49,439 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-09-01 10:42:49,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:42:49,456 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=true, 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;@266e0858, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:42:49,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 10:42:49,460 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-09-01 10:42:49,460 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:42:49,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:49,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 10:42:49,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:49,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash 415213780, now seen corresponding path program 1 times [2023-09-01 10:42:49,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:49,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269356727] [2023-09-01 10:42:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269356727] [2023-09-01 10:42:49,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269356727] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:49,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:49,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 10:42:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221555986] [2023-09-01 10:42:49,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:42:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:42:49,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:42:49,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-09-01 10:42:49,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-09-01 10:42:49,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:49,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-09-01 10:42:49,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:50,045 INFO L130 PetriNetUnfolder]: 192/481 cut-off events. [2023-09-01 10:42:50,046 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:42:50,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 481 events. 192/481 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2120 event pairs, 62 based on Foata normal form. 13/449 useless extension candidates. Maximal degree in co-relation 892. Up to 347 conditions per place. [2023-09-01 10:42:50,055 INFO L137 encePairwiseOnDemand]: 214/222 looper letters, 41 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-09-01 10:42:50,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 189 flow [2023-09-01 10:42:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:42:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:42:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-09-01 10:42:50,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2023-09-01 10:42:50,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-09-01 10:42:50,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-09-01 10:42:50,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:50,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-09-01 10:42:50,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-09-01 10:42:50,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:50,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:50,102 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 81 flow. Second operand 3 states and 405 transitions. [2023-09-01 10:42:50,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 189 flow [2023-09-01 10:42:50,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:42:50,106 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 84 flow [2023-09-01 10:42:50,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-09-01 10:42:50,111 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-09-01 10:42:50,112 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 84 flow [2023-09-01 10:42:50,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-09-01 10:42:50,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:50,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:50,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:42:50,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:50,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash 94065758, now seen corresponding path program 1 times [2023-09-01 10:42:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89703716] [2023-09-01 10:42:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:50,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89703716] [2023-09-01 10:42:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89703716] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:50,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:50,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:42:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835679659] [2023-09-01 10:42:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:50,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:42:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:42:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:42:50,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2023-09-01 10:42:50,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2023-09-01 10:42:50,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:50,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2023-09-01 10:42:50,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:50,424 INFO L130 PetriNetUnfolder]: 302/652 cut-off events. [2023-09-01 10:42:50,424 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 10:42:50,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 652 events. 302/652 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2910 event pairs, 143 based on Foata normal form. 6/638 useless extension candidates. Maximal degree in co-relation 1390. Up to 511 conditions per place. [2023-09-01 10:42:50,428 INFO L137 encePairwiseOnDemand]: 210/222 looper letters, 54 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2023-09-01 10:42:50,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 287 flow [2023-09-01 10:42:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:42:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:42:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-09-01 10:42:50,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5795795795795796 [2023-09-01 10:42:50,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-09-01 10:42:50,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-09-01 10:42:50,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:50,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-09-01 10:42:50,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-09-01 10:42:50,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:50,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:50,435 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 84 flow. Second operand 3 states and 386 transitions. [2023-09-01 10:42:50,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 287 flow [2023-09-01 10:42:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:42:50,439 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 156 flow [2023-09-01 10:42:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-09-01 10:42:50,440 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-09-01 10:42:50,440 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 156 flow [2023-09-01 10:42:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2023-09-01 10:42:50,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:50,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:50,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:42:50,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:50,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1845743784, now seen corresponding path program 1 times [2023-09-01 10:42:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:50,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900965749] [2023-09-01 10:42:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:50,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:50,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900965749] [2023-09-01 10:42:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900965749] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:50,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:50,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:42:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123222330] [2023-09-01 10:42:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:50,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 10:42:50,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 10:42:50,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 10:42:50,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 222 [2023-09-01 10:42:50,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-09-01 10:42:50,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:50,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 222 [2023-09-01 10:42:50,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:50,761 INFO L130 PetriNetUnfolder]: 151/376 cut-off events. [2023-09-01 10:42:50,761 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2023-09-01 10:42:50,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 376 events. 151/376 cut-off events. For 93/101 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1677 event pairs, 31 based on Foata normal form. 15/376 useless extension candidates. Maximal degree in co-relation 915. Up to 262 conditions per place. [2023-09-01 10:42:50,764 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 51 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-09-01 10:42:50,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 307 flow [2023-09-01 10:42:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:42:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:42:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2023-09-01 10:42:50,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5731981981981982 [2023-09-01 10:42:50,766 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions. [2023-09-01 10:42:50,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions. [2023-09-01 10:42:50,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:50,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions. [2023-09-01 10:42:50,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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) [2023-09-01 10:42:50,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:50,770 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:50,770 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 156 flow. Second operand 4 states and 509 transitions. [2023-09-01 10:42:50,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 307 flow [2023-09-01 10:42:50,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 296 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 10:42:50,773 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 148 flow [2023-09-01 10:42:50,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-09-01 10:42:50,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-09-01 10:42:50,774 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 148 flow [2023-09-01 10:42:50,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-09-01 10:42:50,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:50,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:42:50,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:50,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 281324236, now seen corresponding path program 1 times [2023-09-01 10:42:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357114580] [2023-09-01 10:42:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357114580] [2023-09-01 10:42:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357114580] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 10:42:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906650003] [2023-09-01 10:42:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:42:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:42:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:42:50,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-09-01 10:42:50,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-09-01 10:42:50,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:50,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-09-01 10:42:50,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:50,926 INFO L130 PetriNetUnfolder]: 141/363 cut-off events. [2023-09-01 10:42:50,926 INFO L131 PetriNetUnfolder]: For 127/129 co-relation queries the response was YES. [2023-09-01 10:42:50,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 363 events. 141/363 cut-off events. For 127/129 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1465 event pairs, 52 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 916. Up to 213 conditions per place. [2023-09-01 10:42:50,928 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 47 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-09-01 10:42:50,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 293 flow [2023-09-01 10:42:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:42:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:42:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-09-01 10:42:50,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006006006006006 [2023-09-01 10:42:50,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-09-01 10:42:50,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-09-01 10:42:50,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:50,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-09-01 10:42:50,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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) [2023-09-01 10:42:50,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:50,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:50,935 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 148 flow. Second operand 3 states and 400 transitions. [2023-09-01 10:42:50,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 293 flow [2023-09-01 10:42:50,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:42:50,938 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 155 flow [2023-09-01 10:42:50,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-09-01 10:42:50,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-09-01 10:42:50,939 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 155 flow [2023-09-01 10:42:50,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-09-01 10:42:50,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:50,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:50,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:42:50,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:50,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash 331096167, now seen corresponding path program 1 times [2023-09-01 10:42:50,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:50,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104708647] [2023-09-01 10:42:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:50,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104708647] [2023-09-01 10:42:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104708647] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:42:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157656383] [2023-09-01 10:42:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 10:42:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 10:42:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 10:42:51,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-09-01 10:42:51,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2023-09-01 10:42:51,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:51,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-09-01 10:42:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:51,133 INFO L130 PetriNetUnfolder]: 115/316 cut-off events. [2023-09-01 10:42:51,133 INFO L131 PetriNetUnfolder]: For 130/131 co-relation queries the response was YES. [2023-09-01 10:42:51,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 316 events. 115/316 cut-off events. For 130/131 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1219 event pairs, 101 based on Foata normal form. 31/346 useless extension candidates. Maximal degree in co-relation 816. Up to 269 conditions per place. [2023-09-01 10:42:51,135 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 30 selfloop transitions, 3 changer transitions 1/40 dead transitions. [2023-09-01 10:42:51,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 215 flow [2023-09-01 10:42:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:42:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:42:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-09-01 10:42:51,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2023-09-01 10:42:51,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-09-01 10:42:51,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-09-01 10:42:51,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:51,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-09-01 10:42:51,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2023-09-01 10:42:51,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:51,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:51,142 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 155 flow. Second operand 4 states and 504 transitions. [2023-09-01 10:42:51,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 215 flow [2023-09-01 10:42:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:42:51,144 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 148 flow [2023-09-01 10:42:51,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-09-01 10:42:51,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-09-01 10:42:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 148 flow [2023-09-01 10:42:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 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) [2023-09-01 10:42:51,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:51,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:42:51,146 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:51,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1433294157, now seen corresponding path program 1 times [2023-09-01 10:42:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015177454] [2023-09-01 10:42:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:51,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:51,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015177454] [2023-09-01 10:42:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015177454] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:51,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:51,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:42:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960842648] [2023-09-01 10:42:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:51,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:42:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:42:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:42:51,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2023-09-01 10:42:51,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-09-01 10:42:51,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:51,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2023-09-01 10:42:51,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:51,341 INFO L130 PetriNetUnfolder]: 60/234 cut-off events. [2023-09-01 10:42:51,341 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-09-01 10:42:51,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 234 events. 60/234 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 905 event pairs, 24 based on Foata normal form. 42/276 useless extension candidates. Maximal degree in co-relation 650. Up to 122 conditions per place. [2023-09-01 10:42:51,342 INFO L137 encePairwiseOnDemand]: 204/222 looper letters, 28 selfloop transitions, 20 changer transitions 10/58 dead transitions. [2023-09-01 10:42:51,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 349 flow [2023-09-01 10:42:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:42:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:42:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-09-01 10:42:51,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539039039039039 [2023-09-01 10:42:51,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-09-01 10:42:51,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-09-01 10:42:51,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:51,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-09-01 10:42:51,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-09-01 10:42:51,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:51,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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) [2023-09-01 10:42:51,356 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 148 flow. Second operand 3 states and 359 transitions. [2023-09-01 10:42:51,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 349 flow [2023-09-01 10:42:51,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 339 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-09-01 10:42:51,358 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 234 flow [2023-09-01 10:42:51,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-09-01 10:42:51,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-09-01 10:42:51,359 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 234 flow [2023-09-01 10:42:51,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-09-01 10:42:51,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:51,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:51,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:42:51,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:51,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1481555997, now seen corresponding path program 1 times [2023-09-01 10:42:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:51,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118376190] [2023-09-01 10:42:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118376190] [2023-09-01 10:42:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118376190] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 10:42:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72907309] [2023-09-01 10:42:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:51,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 10:42:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 10:42:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 10:42:51,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2023-09-01 10:42:51,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-09-01 10:42:51,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:51,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2023-09-01 10:42:51,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:51,742 INFO L130 PetriNetUnfolder]: 48/198 cut-off events. [2023-09-01 10:42:51,743 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-09-01 10:42:51,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 198 events. 48/198 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 727 event pairs, 11 based on Foata normal form. 2/200 useless extension candidates. Maximal degree in co-relation 698. Up to 187 conditions per place. [2023-09-01 10:42:51,744 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 40 selfloop transitions, 4 changer transitions 5/49 dead transitions. [2023-09-01 10:42:51,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 367 flow [2023-09-01 10:42:51,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:42:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:42:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-09-01 10:42:51,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146396396396397 [2023-09-01 10:42:51,750 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-09-01 10:42:51,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-09-01 10:42:51,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:51,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-09-01 10:42:51,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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) [2023-09-01 10:42:51,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:51,754 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:51,754 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 234 flow. Second operand 4 states and 457 transitions. [2023-09-01 10:42:51,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 367 flow [2023-09-01 10:42:51,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 338 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 10:42:51,759 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 192 flow [2023-09-01 10:42:51,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-09-01 10:42:51,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-09-01 10:42:51,760 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 192 flow [2023-09-01 10:42:51,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-09-01 10:42:51,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:51,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:51,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:42:51,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:51,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash -999921372, now seen corresponding path program 1 times [2023-09-01 10:42:51,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:51,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644064918] [2023-09-01 10:42:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:51,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644064918] [2023-09-01 10:42:51,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644064918] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:51,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:51,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 10:42:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075723053] [2023-09-01 10:42:51,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:51,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 10:42:51,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 10:42:51,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 10:42:52,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2023-09-01 10:42:52,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2023-09-01 10:42:52,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:52,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2023-09-01 10:42:52,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:52,162 INFO L130 PetriNetUnfolder]: 19/105 cut-off events. [2023-09-01 10:42:52,163 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-09-01 10:42:52,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 105 events. 19/105 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 253 event pairs, 2 based on Foata normal form. 12/117 useless extension candidates. Maximal degree in co-relation 349. Up to 70 conditions per place. [2023-09-01 10:42:52,163 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 33 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-09-01 10:42:52,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 295 flow [2023-09-01 10:42:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:42:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:42:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-09-01 10:42:52,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-09-01 10:42:52,165 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-09-01 10:42:52,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-09-01 10:42:52,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:52,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-09-01 10:42:52,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 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) [2023-09-01 10:42:52,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:52,168 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:52,168 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 192 flow. Second operand 4 states and 450 transitions. [2023-09-01 10:42:52,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 295 flow [2023-09-01 10:42:52,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 279 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 10:42:52,170 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 188 flow [2023-09-01 10:42:52,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-09-01 10:42:52,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-09-01 10:42:52,171 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 188 flow [2023-09-01 10:42:52,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2023-09-01 10:42:52,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:42:52,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:52,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:42:52,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-09-01 10:42:52,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:42:52,172 INFO L85 PathProgramCache]: Analyzing trace with hash -496385228, now seen corresponding path program 1 times [2023-09-01 10:42:52,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:42:52,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75805609] [2023-09-01 10:42:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:42:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:42:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:42:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:42:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:42:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75805609] [2023-09-01 10:42:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75805609] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:42:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:42:52,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 10:42:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464384475] [2023-09-01 10:42:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:42:52,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 10:42:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:42:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 10:42:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 10:42:52,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-09-01 10:42:52,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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) [2023-09-01 10:42:52,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:42:52,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-09-01 10:42:52,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:42:52,373 INFO L130 PetriNetUnfolder]: 19/103 cut-off events. [2023-09-01 10:42:52,373 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-09-01 10:42:52,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 103 events. 19/103 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 8 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 330. Up to 77 conditions per place. [2023-09-01 10:42:52,374 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-09-01 10:42:52,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 279 flow [2023-09-01 10:42:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:42:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:42:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-09-01 10:42:52,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2023-09-01 10:42:52,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-09-01 10:42:52,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-09-01 10:42:52,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:42:52,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-09-01 10:42:52,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-09-01 10:42:52,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:52,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 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) [2023-09-01 10:42:52,379 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 188 flow. Second operand 4 states and 500 transitions. [2023-09-01 10:42:52,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 279 flow [2023-09-01 10:42:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 10:42:52,381 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-09-01 10:42:52,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-09-01 10:42:52,381 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-09-01 10:42:52,382 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-09-01 10:42:52,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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) [2023-09-01 10:42:52,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-09-01 10:42:52,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-09-01 10:42:52,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-09-01 10:42:52,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-09-01 10:42:52,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 10:42:52,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:42:52,385 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:42:52,388 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 10:42:52,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 10:42:52,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 10:42:52 BasicIcfg [2023-09-01 10:42:52,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 10:42:52,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 10:42:52,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 10:42:52,391 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 10:42:52,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:42:46" (3/4) ... [2023-09-01 10:42:52,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 10:42:52,399 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 10:42:52,402 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-09-01 10:42:52,402 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 10:42:52,403 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 10:42:52,403 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 10:42:52,431 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 10:42:52,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 10:42:52,432 INFO L158 Benchmark]: Toolchain (without parser) took 7342.92ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 44.0MB in the beginning and 78.1MB in the end (delta: -34.1MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,432 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:42:52,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.12ms. Allocated memory is still 71.3MB. Free memory was 43.8MB in the beginning and 42.0MB in the end (delta: 1.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.85ms. Allocated memory is still 71.3MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,433 INFO L158 Benchmark]: Boogie Preprocessor took 44.19ms. Allocated memory is still 71.3MB. Free memory was 39.9MB in the beginning and 38.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,433 INFO L158 Benchmark]: RCFGBuilder took 434.89ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 47.4MB in the end (delta: -9.4MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,434 INFO L158 Benchmark]: TraceAbstraction took 6222.84ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 46.6MB in the beginning and 82.3MB in the end (delta: -35.7MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,434 INFO L158 Benchmark]: Witness Printer took 40.61ms. Allocated memory is still 125.8MB. Free memory was 81.3MB in the beginning and 78.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:42:52,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.12ms. Allocated memory is still 71.3MB. Free memory was 43.8MB in the beginning and 42.0MB in the end (delta: 1.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.85ms. Allocated memory is still 71.3MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.19ms. Allocated memory is still 71.3MB. Free memory was 39.9MB in the beginning and 38.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.89ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 47.4MB in the end (delta: -9.4MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6222.84ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 46.6MB in the beginning and 82.3MB in the end (delta: -35.7MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Witness Printer took 40.61ms. Allocated memory is still 125.8MB. Free memory was 81.3MB in the beginning and 78.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 118 PlacesBefore, 41 PlacesAfterwards, 117 TransitionsBefore, 39 TransitionsAfterwards, 3102 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 9364 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3027, independent: 2652, independent conditional: 0, independent unconditional: 2652, dependent: 375, dependent conditional: 0, dependent unconditional: 375, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1570, independent: 1493, independent conditional: 0, independent unconditional: 1493, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3027, independent: 1159, independent conditional: 0, independent unconditional: 1159, dependent: 298, dependent conditional: 0, dependent unconditional: 298, unknown: 1570, unknown conditional: 0, unknown unconditional: 1570] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 163 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 666 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1104 IncrementalHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 63 mSDtfsCounter, 1104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 10:42:52,456 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE