./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:41:03,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:41:03,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:41:03,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:41:03,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:41:03,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:41:03,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:41:03,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:41:03,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:41:03,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:41:03,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:41:03,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:41:03,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:41:03,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:41:03,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:41:03,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:41:03,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:41:03,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:41:03,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:41:03,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:41:03,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:41:03,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:41:03,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:41:03,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:41:03,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:41:03,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:41:03,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:41:03,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:41:03,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:41:03,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:41:03,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:41:03,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:41:03,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:41:03,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:41:03,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:41:03,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:41:03,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:41:03,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:41:03,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:41:03,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:41:03,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:41:03,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:41:03,546 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:41:03,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:41:03,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:41:03,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:41:03,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:41:03,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:41:03,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:41:03,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:41:03,550 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:41:03,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:41:03,551 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:41:03,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:41:03,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:41:03,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:41:03,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:41:03,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:41:03,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:41:03,552 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:41:03,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:41:03,552 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:41:03,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:41:03,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:41:03,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:41:03,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:41:03,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:41:03,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:41:03,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:41:03,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:41:03,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:41:03,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:41:03,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:41:03,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:41:03,555 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:41:03,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:41:03,555 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:41:03,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:41:03,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:41:03,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:41:03,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:41:03,892 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:41:03,892 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:41:03,893 INFO L432 ainManager$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 [2023-08-30 17:41:04,966 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:41:05,180 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:41:05,195 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-08-30 17:41:05,213 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09cd0eff/39d965b257854bc4935db3b8c8980aa7/FLAG8bfc22cea [2023-08-30 17:41:05,224 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09cd0eff/39d965b257854bc4935db3b8c8980aa7 [2023-08-30 17:41:05,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:41:05,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:41:05,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:41:05,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:41:05,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:41:05,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200d17ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05, skipping insertion in model container [2023-08-30 17:41:05,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:41:05,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:41:05,383 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] [2023-08-30 17:41:05,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:41:05,514 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:41:05,527 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] [2023-08-30 17:41:05,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:41:05,628 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:41:05,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05 WrapperNode [2023-08-30 17:41:05,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:41:05,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:41:05,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:41:05,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:41:05,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,693 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2023-08-30 17:41:05,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:41:05,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:41:05,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:41:05,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:41:05,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:41:05,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:41:05,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:41:05,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:41:05,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (1/1) ... [2023-08-30 17:41:05,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:41:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:41:05,768 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) [2023-08-30 17:41:05,776 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 [2023-08-30 17:41:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:41:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:41:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:41:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:41:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:41:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 17:41:05,805 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 17:41:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:41:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:41:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:41:05,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:41:05,807 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:41:05,905 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:41:05,907 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:41:06,171 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:41:06,196 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:41:06,197 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 17:41:06,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:41:06 BoogieIcfgContainer [2023-08-30 17:41:06,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:41:06,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:41:06,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:41:06,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:41:06,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:41:05" (1/3) ... [2023-08-30 17:41:06,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467b4daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:41:06, skipping insertion in model container [2023-08-30 17:41:06,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:41:05" (2/3) ... [2023-08-30 17:41:06,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467b4daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:41:06, skipping insertion in model container [2023-08-30 17:41:06,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:41:06" (3/3) ... [2023-08-30 17:41:06,215 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-08-30 17:41:06,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:41:06,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:41:06,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 17:41:06,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:41:06,350 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 17:41:06,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 131 transitions, 270 flow [2023-08-30 17:41:06,486 INFO L130 PetriNetUnfolder]: 4/130 cut-off events. [2023-08-30 17:41:06,487 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:41:06,491 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. [2023-08-30 17:41:06,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 131 transitions, 270 flow [2023-08-30 17:41:06,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 117 transitions, 237 flow [2023-08-30 17:41:06,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:41:06,521 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 117 transitions, 237 flow [2023-08-30 17:41:06,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 117 transitions, 237 flow [2023-08-30 17:41:06,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 117 transitions, 237 flow [2023-08-30 17:41:06,562 INFO L130 PetriNetUnfolder]: 3/117 cut-off events. [2023-08-30 17:41:06,562 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:41:06,563 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. [2023-08-30 17:41:06,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 3102 [2023-08-30 17:41:09,492 INFO L134 LiptonReduction]: Checked pairs total: 9364 [2023-08-30 17:41:09,493 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-30 17:41:09,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:41:09,509 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;@3c7807a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:41:09,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 17:41:09,513 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2023-08-30 17:41:09,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:41:09,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:09,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 17:41:09,515 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)] === [2023-08-30 17:41:09,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash 415213780, now seen corresponding path program 1 times [2023-08-30 17:41:09,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:09,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251285638] [2023-08-30 17:41:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:09,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:09,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:09,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251285638] [2023-08-30 17:41:09,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251285638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:09,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:09,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:41:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883419385] [2023-08-30 17:41:09,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:09,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:41:09,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:41:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:41:09,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-08-30 17:41:09,876 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) [2023-08-30 17:41:09,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:09,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-08-30 17:41:09,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:10,029 INFO L130 PetriNetUnfolder]: 192/481 cut-off events. [2023-08-30 17:41:10,029 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:41:10,031 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. [2023-08-30 17:41:10,033 INFO L137 encePairwiseOnDemand]: 214/222 looper letters, 41 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-08-30 17:41:10,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 189 flow [2023-08-30 17:41:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:41:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:41:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-08-30 17:41:10,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2023-08-30 17:41:10,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-08-30 17:41:10,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-08-30 17:41:10,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:10,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-08-30 17:41:10,062 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) [2023-08-30 17:41:10,068 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) [2023-08-30 17:41:10,069 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) [2023-08-30 17:41:10,071 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 81 flow. Second operand 3 states and 405 transitions. [2023-08-30 17:41:10,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 189 flow [2023-08-30 17:41:10,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:41:10,075 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 84 flow [2023-08-30 17:41:10,077 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} [2023-08-30 17:41:10,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-30 17:41:10,082 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 84 flow [2023-08-30 17:41:10,083 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) [2023-08-30 17:41:10,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:10,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:41:10,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:41:10,084 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)] === [2023-08-30 17:41:10,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 94065758, now seen corresponding path program 1 times [2023-08-30 17:41:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:10,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268929333] [2023-08-30 17:41:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:10,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:10,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:10,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268929333] [2023-08-30 17:41:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268929333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:10,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:10,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:41:10,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747905285] [2023-08-30 17:41:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:41:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:10,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:41:10,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:41:10,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 222 [2023-08-30 17:41:10,294 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) [2023-08-30 17:41:10,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:10,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 222 [2023-08-30 17:41:10,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:10,426 INFO L130 PetriNetUnfolder]: 302/652 cut-off events. [2023-08-30 17:41:10,426 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 17:41:10,429 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. [2023-08-30 17:41:10,431 INFO L137 encePairwiseOnDemand]: 210/222 looper letters, 54 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2023-08-30 17:41:10,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 287 flow [2023-08-30 17:41:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:41:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:41:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-08-30 17:41:10,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5795795795795796 [2023-08-30 17:41:10,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-08-30 17:41:10,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-08-30 17:41:10,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:10,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-08-30 17:41:10,437 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) [2023-08-30 17:41:10,438 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) [2023-08-30 17:41:10,439 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) [2023-08-30 17:41:10,439 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 84 flow. Second operand 3 states and 386 transitions. [2023-08-30 17:41:10,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 287 flow [2023-08-30 17:41:10,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:41:10,443 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 156 flow [2023-08-30 17:41:10,443 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} [2023-08-30 17:41:10,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-30 17:41:10,444 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 156 flow [2023-08-30 17:41:10,445 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) [2023-08-30 17:41:10,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:10,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:41:10,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:41:10,446 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)] === [2023-08-30 17:41:10,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1845743784, now seen corresponding path program 1 times [2023-08-30 17:41:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:10,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770998628] [2023-08-30 17:41:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:10,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770998628] [2023-08-30 17:41:10,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770998628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:10,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:10,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:41:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439161769] [2023-08-30 17:41:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:41:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:10,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:41:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:41:10,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 222 [2023-08-30 17:41:10,710 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) [2023-08-30 17:41:10,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:10,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 222 [2023-08-30 17:41:10,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:10,807 INFO L130 PetriNetUnfolder]: 151/376 cut-off events. [2023-08-30 17:41:10,807 INFO L131 PetriNetUnfolder]: For 93/101 co-relation queries the response was YES. [2023-08-30 17:41:10,808 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. [2023-08-30 17:41:10,809 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 51 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-08-30 17:41:10,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 307 flow [2023-08-30 17:41:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:41:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:41:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2023-08-30 17:41:10,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5731981981981982 [2023-08-30 17:41:10,811 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions. [2023-08-30 17:41:10,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions. [2023-08-30 17:41:10,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:10,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions. [2023-08-30 17:41:10,813 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) [2023-08-30 17:41:10,815 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) [2023-08-30 17:41:10,816 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) [2023-08-30 17:41:10,816 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 156 flow. Second operand 4 states and 509 transitions. [2023-08-30 17:41:10,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 307 flow [2023-08-30 17:41:10,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 296 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 17:41:10,819 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 148 flow [2023-08-30 17:41:10,819 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} [2023-08-30 17:41:10,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-30 17:41:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 148 flow [2023-08-30 17:41:10,820 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) [2023-08-30 17:41:10,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:10,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:41:10,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:41:10,821 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)] === [2023-08-30 17:41:10,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash 281324236, now seen corresponding path program 1 times [2023-08-30 17:41:10,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:10,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145747571] [2023-08-30 17:41:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:10,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145747571] [2023-08-30 17:41:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145747571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:41:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310203026] [2023-08-30 17:41:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:10,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:41:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:41:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:41:10,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-08-30 17:41:10,890 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) [2023-08-30 17:41:10,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:10,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-08-30 17:41:10,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:10,960 INFO L130 PetriNetUnfolder]: 141/363 cut-off events. [2023-08-30 17:41:10,960 INFO L131 PetriNetUnfolder]: For 127/129 co-relation queries the response was YES. [2023-08-30 17:41:10,961 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. [2023-08-30 17:41:10,962 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 47 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-30 17:41:10,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 293 flow [2023-08-30 17:41:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:41:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:41:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 17:41:10,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006006006006006 [2023-08-30 17:41:10,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 17:41:10,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 17:41:10,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:10,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 17:41:10,966 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) [2023-08-30 17:41:10,968 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) [2023-08-30 17:41:10,968 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) [2023-08-30 17:41:10,968 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 148 flow. Second operand 3 states and 400 transitions. [2023-08-30 17:41:10,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 293 flow [2023-08-30 17:41:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:41:10,971 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 155 flow [2023-08-30 17:41:10,971 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} [2023-08-30 17:41:10,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 17:41:10,972 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 155 flow [2023-08-30 17:41:10,973 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) [2023-08-30 17:41:10,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:10,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:41:10,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:41:10,973 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)] === [2023-08-30 17:41:10,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:10,974 INFO L85 PathProgramCache]: Analyzing trace with hash 331096167, now seen corresponding path program 1 times [2023-08-30 17:41:10,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:10,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959683109] [2023-08-30 17:41:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:10,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:11,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:11,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959683109] [2023-08-30 17:41:11,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959683109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:41:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936054062] [2023-08-30 17:41:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:11,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:41:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:41:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:41:11,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-08-30 17:41:11,089 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) [2023-08-30 17:41:11,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:11,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-08-30 17:41:11,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:11,168 INFO L130 PetriNetUnfolder]: 115/316 cut-off events. [2023-08-30 17:41:11,168 INFO L131 PetriNetUnfolder]: For 130/131 co-relation queries the response was YES. [2023-08-30 17:41:11,169 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. [2023-08-30 17:41:11,170 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 30 selfloop transitions, 3 changer transitions 1/40 dead transitions. [2023-08-30 17:41:11,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 215 flow [2023-08-30 17:41:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:41:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:41:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-30 17:41:11,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2023-08-30 17:41:11,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-30 17:41:11,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-30 17:41:11,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:11,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-30 17:41:11,174 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) [2023-08-30 17:41:11,176 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) [2023-08-30 17:41:11,176 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) [2023-08-30 17:41:11,176 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 155 flow. Second operand 4 states and 504 transitions. [2023-08-30 17:41:11,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 215 flow [2023-08-30 17:41:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:41:11,180 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 148 flow [2023-08-30 17:41:11,180 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} [2023-08-30 17:41:11,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 17:41:11,182 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 148 flow [2023-08-30 17:41:11,183 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) [2023-08-30 17:41:11,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:11,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:41:11,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:41:11,183 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)] === [2023-08-30 17:41:11,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1433294157, now seen corresponding path program 1 times [2023-08-30 17:41:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839358677] [2023-08-30 17:41:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:11,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839358677] [2023-08-30 17:41:11,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839358677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:11,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:11,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:41:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177785756] [2023-08-30 17:41:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:11,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:41:11,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:11,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:41:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:41:11,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2023-08-30 17:41:11,324 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) [2023-08-30 17:41:11,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:11,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2023-08-30 17:41:11,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:11,403 INFO L130 PetriNetUnfolder]: 60/234 cut-off events. [2023-08-30 17:41:11,403 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-08-30 17:41:11,404 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. [2023-08-30 17:41:11,404 INFO L137 encePairwiseOnDemand]: 204/222 looper letters, 28 selfloop transitions, 20 changer transitions 10/58 dead transitions. [2023-08-30 17:41:11,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 349 flow [2023-08-30 17:41:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:41:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:41:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-30 17:41:11,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539039039039039 [2023-08-30 17:41:11,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-30 17:41:11,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-30 17:41:11,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:11,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-30 17:41:11,408 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) [2023-08-30 17:41:11,409 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) [2023-08-30 17:41:11,409 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) [2023-08-30 17:41:11,409 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 148 flow. Second operand 3 states and 359 transitions. [2023-08-30 17:41:11,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 349 flow [2023-08-30 17:41:11,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 339 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 17:41:11,411 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 234 flow [2023-08-30 17:41:11,412 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} [2023-08-30 17:41:11,412 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 17:41:11,412 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 234 flow [2023-08-30 17:41:11,413 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) [2023-08-30 17:41:11,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:11,413 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] [2023-08-30 17:41:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:41:11,413 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)] === [2023-08-30 17:41:11,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1481555997, now seen corresponding path program 1 times [2023-08-30 17:41:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:11,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135544382] [2023-08-30 17:41:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:11,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:11,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135544382] [2023-08-30 17:41:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135544382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:11,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 17:41:11,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757832957] [2023-08-30 17:41:11,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:11,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 17:41:11,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:11,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 17:41:11,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:41:11,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2023-08-30 17:41:11,713 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) [2023-08-30 17:41:11,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:11,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2023-08-30 17:41:11,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:11,780 INFO L130 PetriNetUnfolder]: 48/198 cut-off events. [2023-08-30 17:41:11,780 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-08-30 17:41:11,780 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. [2023-08-30 17:41:11,781 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 40 selfloop transitions, 4 changer transitions 5/49 dead transitions. [2023-08-30 17:41:11,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 367 flow [2023-08-30 17:41:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:41:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:41:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-08-30 17:41:11,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146396396396397 [2023-08-30 17:41:11,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-08-30 17:41:11,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-08-30 17:41:11,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:11,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-08-30 17:41:11,787 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) [2023-08-30 17:41:11,789 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) [2023-08-30 17:41:11,789 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) [2023-08-30 17:41:11,789 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 234 flow. Second operand 4 states and 457 transitions. [2023-08-30 17:41:11,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 367 flow [2023-08-30 17:41:11,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 338 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 17:41:11,792 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 192 flow [2023-08-30 17:41:11,792 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} [2023-08-30 17:41:11,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-08-30 17:41:11,792 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 192 flow [2023-08-30 17:41:11,793 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) [2023-08-30 17:41:11,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:11,793 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] [2023-08-30 17:41:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:41:11,793 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)] === [2023-08-30 17:41:11,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash -999921372, now seen corresponding path program 1 times [2023-08-30 17:41:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236224404] [2023-08-30 17:41:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236224404] [2023-08-30 17:41:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236224404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:11,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:11,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:41:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468930226] [2023-08-30 17:41:11,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:11,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 17:41:11,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:11,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 17:41:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 17:41:12,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2023-08-30 17:41:12,110 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) [2023-08-30 17:41:12,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:12,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2023-08-30 17:41:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:12,166 INFO L130 PetriNetUnfolder]: 19/105 cut-off events. [2023-08-30 17:41:12,167 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-30 17:41:12,167 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. [2023-08-30 17:41:12,168 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 33 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-30 17:41:12,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 295 flow [2023-08-30 17:41:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:41:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:41:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-08-30 17:41:12,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-08-30 17:41:12,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-08-30 17:41:12,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-08-30 17:41:12,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:12,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-08-30 17:41:12,171 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) [2023-08-30 17:41:12,173 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) [2023-08-30 17:41:12,173 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) [2023-08-30 17:41:12,173 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 192 flow. Second operand 4 states and 450 transitions. [2023-08-30 17:41:12,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 295 flow [2023-08-30 17:41:12,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 279 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 17:41:12,175 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 188 flow [2023-08-30 17:41:12,176 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} [2023-08-30 17:41:12,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-30 17:41:12,178 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 188 flow [2023-08-30 17:41:12,178 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) [2023-08-30 17:41:12,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:41:12,179 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] [2023-08-30 17:41:12,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 17:41:12,179 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)] === [2023-08-30 17:41:12,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:41:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash -496385228, now seen corresponding path program 1 times [2023-08-30 17:41:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:41:12,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036041193] [2023-08-30 17:41:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:41:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:41:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:41:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:41:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:41:12,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036041193] [2023-08-30 17:41:12,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036041193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:41:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:41:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:41:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426383171] [2023-08-30 17:41:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:41:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:41:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:41:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:41:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:41:12,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 222 [2023-08-30 17:41:12,386 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) [2023-08-30 17:41:12,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:41:12,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 222 [2023-08-30 17:41:12,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:41:12,428 INFO L130 PetriNetUnfolder]: 19/103 cut-off events. [2023-08-30 17:41:12,429 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-08-30 17:41:12,429 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. [2023-08-30 17:41:12,429 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-08-30 17:41:12,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 279 flow [2023-08-30 17:41:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:41:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:41:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-08-30 17:41:12,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2023-08-30 17:41:12,432 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-08-30 17:41:12,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-08-30 17:41:12,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:41:12,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-08-30 17:41:12,434 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) [2023-08-30 17:41:12,435 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) [2023-08-30 17:41:12,435 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) [2023-08-30 17:41:12,435 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 188 flow. Second operand 4 states and 500 transitions. [2023-08-30 17:41:12,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 279 flow [2023-08-30 17:41:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 269 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 17:41:12,438 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-30 17:41:12,438 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} [2023-08-30 17:41:12,439 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-08-30 17:41:12,439 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-30 17:41:12,439 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) [2023-08-30 17:41:12,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 17:41:12,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 17:41:12,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-30 17:41:12,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-30 17:41:12,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-30 17:41:12,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 17:41:12,446 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:41:12,449 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:41:12,449 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:41:12,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:41:12 BasicIcfg [2023-08-30 17:41:12,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:41:12,453 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:41:12,453 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:41:12,453 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:41:12,454 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:41:06" (3/4) ... [2023-08-30 17:41:12,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 17:41:12,461 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 17:41:12,467 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-08-30 17:41:12,467 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 17:41:12,467 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 17:41:12,467 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 17:41:12,508 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:41:12,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:41:12,509 INFO L158 Benchmark]: Toolchain (without parser) took 7281.97ms. Allocated memory was 75.5MB in the beginning and 142.6MB in the end (delta: 67.1MB). Free memory was 46.7MB in the beginning and 71.0MB in the end (delta: -24.4MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,509 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 75.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:41:12,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.70ms. Allocated memory is still 75.5MB. Free memory was 46.5MB in the beginning and 49.3MB in the end (delta: -2.9MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.14ms. Allocated memory is still 75.5MB. Free memory was 49.0MB in the beginning and 47.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,510 INFO L158 Benchmark]: Boogie Preprocessor took 42.77ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 45.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,510 INFO L158 Benchmark]: RCFGBuilder took 460.93ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 45.5MB in the beginning and 71.8MB in the end (delta: -26.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,510 INFO L158 Benchmark]: TraceAbstraction took 6252.07ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 71.4MB in the beginning and 74.2MB in the end (delta: -2.8MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,511 INFO L158 Benchmark]: Witness Printer took 55.32ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 71.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:41:12,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 75.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.70ms. Allocated memory is still 75.5MB. Free memory was 46.5MB in the beginning and 49.3MB in the end (delta: -2.9MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.14ms. Allocated memory is still 75.5MB. Free memory was 49.0MB in the beginning and 47.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.77ms. Allocated memory is still 75.5MB. Free memory was 47.0MB in the beginning and 45.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.93ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 45.5MB in the beginning and 71.8MB in the end (delta: -26.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6252.07ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 71.4MB in the beginning and 74.2MB in the end (delta: -2.8MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. * Witness Printer took 55.32ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 71.0MB 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: 3.0s, 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: 3.1s, 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, 0.2s 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! [2023-08-30 17:41:12,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE