./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_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_01-priv_nr_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 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 --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 17:39:45,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:39:45,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:39:45,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:39:45,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:39:45,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:39:45,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:39:45,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:39:45,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:39:45,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:39:45,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:39:45,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:39:45,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:39:45,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:39:45,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:39:45,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:39:45,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:39:45,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:39:45,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:39:45,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:39:45,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:39:45,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:39:45,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:39:45,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:39:45,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:39:45,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:39:45,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:39:45,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:39:45,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:39:45,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:39:45,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:39:45,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:39:45,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:39:45,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:39:45,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:39:45,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:39:45,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:39:45,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:39:45,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:39:45,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:39:45,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:39:45,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 17:39:45,533 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:39:45,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:39:45,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:39:45,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:39:45,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:39:45,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:39:45,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:39:45,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:39:45,537 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:39:45,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:39:45,538 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:39:45,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 17:39:45,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:39:45,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:39:45,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:39:45,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:39:45,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:39:45,539 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:39:45,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:39:45,540 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:39:45,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:39:45,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:39:45,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:39:45,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:39:45,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:39:45,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:39:45,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:39:45,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:39:45,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 17:39:45,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 17:39:45,542 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:39:45,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:39:45,542 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:39:45,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:39:45,543 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:39:45,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:39:45,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:39:45,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:39:45,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:39:45,842 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:39:45,843 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:39:45,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2023-08-30 17:39:46,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:39:47,327 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:39:47,331 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2023-08-30 17:39:47,342 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e3fbcbf/acb941a4a873471a8c862feed8e1b36b/FLAG5974184fa [2023-08-30 17:39:47,355 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e3fbcbf/acb941a4a873471a8c862feed8e1b36b [2023-08-30 17:39:47,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:39:47,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:39:47,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:39:47,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:39:47,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:39:47,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df1ac49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47, skipping insertion in model container [2023-08-30 17:39:47,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:39:47,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:39:47,521 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_01-priv_nr_true.i[1084,1097] [2023-08-30 17:39:47,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:39:47,684 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:39:47,696 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_01-priv_nr_true.i[1084,1097] [2023-08-30 17:39:47,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:39:47,782 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:39:47,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47 WrapperNode [2023-08-30 17:39:47,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:39:47,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:39:47,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:39:47,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:39:47,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,841 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2023-08-30 17:39:47,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:39:47,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:39:47,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:39:47,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:39:47,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,880 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:39:47,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:39:47,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:39:47,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:39:47,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (1/1) ... [2023-08-30 17:39:47,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:39:47,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:39:47,922 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 17:39:47,948 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 17:39:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:39:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:39:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:39:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:39:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:39:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 17:39:47,963 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 17:39:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:39:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:39:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:39:47,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:39:47,964 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 17:39:48,115 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:39:48,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:39:48,336 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:39:48,342 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:39:48,342 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 17:39:48,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:39:48 BoogieIcfgContainer [2023-08-30 17:39:48,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:39:48,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:39:48,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:39:48,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:39:48,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:39:47" (1/3) ... [2023-08-30 17:39:48,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa9623d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:39:48, skipping insertion in model container [2023-08-30 17:39:48,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:39:47" (2/3) ... [2023-08-30 17:39:48,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa9623d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:39:48, skipping insertion in model container [2023-08-30 17:39:48,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:39:48" (3/3) ... [2023-08-30 17:39:48,356 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2023-08-30 17:39:48,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:39:48,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:39:48,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 17:39:48,371 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:39:48,434 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 17:39:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 194 flow [2023-08-30 17:39:48,549 INFO L130 PetriNetUnfolder]: 4/92 cut-off events. [2023-08-30 17:39:48,550 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:39:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 4/92 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 17:39:48,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 194 flow [2023-08-30 17:39:48,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 173 flow [2023-08-30 17:39:48,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:39:48,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 85 transitions, 173 flow [2023-08-30 17:39:48,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 85 transitions, 173 flow [2023-08-30 17:39:48,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 85 transitions, 173 flow [2023-08-30 17:39:48,620 INFO L130 PetriNetUnfolder]: 4/85 cut-off events. [2023-08-30 17:39:48,621 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:39:48,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 4/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 17:39:48,623 INFO L119 LiptonReduction]: Number of co-enabled transitions 1040 [2023-08-30 17:39:50,948 INFO L134 LiptonReduction]: Checked pairs total: 2831 [2023-08-30 17:39:50,949 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-30 17:39:50,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:39:50,965 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;@5e439e95, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:39:50,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 17:39:50,967 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 17:39:50,967 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:39:50,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:50,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 17:39:50,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:50,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 345, now seen corresponding path program 1 times [2023-08-30 17:39:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482050704] [2023-08-30 17:39:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:51,066 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 17:39:51,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:51,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482050704] [2023-08-30 17:39:51,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482050704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:51,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:51,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 17:39:51,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60310680] [2023-08-30 17:39:51,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:51,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:39:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:39:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:39:51,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2023-08-30 17:39:51,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 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 17:39:51,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:51,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2023-08-30 17:39:51,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:51,170 INFO L130 PetriNetUnfolder]: 63/154 cut-off events. [2023-08-30 17:39:51,171 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:39:51,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 154 events. 63/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 577 event pairs, 63 based on Foata normal form. 8/127 useless extension candidates. Maximal degree in co-relation 294. Up to 145 conditions per place. [2023-08-30 17:39:51,173 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 18 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-30 17:39:51,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 79 flow [2023-08-30 17:39:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:39:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:39:51,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2023-08-30 17:39:51,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2023-08-30 17:39:51,187 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2023-08-30 17:39:51,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2023-08-30 17:39:51,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:51,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2023-08-30 17:39:51,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 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 17:39:51,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 17:39:51,198 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 17:39:51,199 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 2 states and 187 transitions. [2023-08-30 17:39:51,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 79 flow [2023-08-30 17:39:51,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:39:51,202 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 42 flow [2023-08-30 17:39:51,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-08-30 17:39:51,207 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2023-08-30 17:39:51,207 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 42 flow [2023-08-30 17:39:51,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 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 17:39:51,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:51,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 17:39:51,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:39:51,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:51,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash 10541050, now seen corresponding path program 1 times [2023-08-30 17:39:51,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:51,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561882671] [2023-08-30 17:39:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:51,528 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 17:39:51,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:51,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561882671] [2023-08-30 17:39:51,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561882671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:51,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:51,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 17:39:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173350455] [2023-08-30 17:39:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:51,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:39:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:39:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:39:51,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 174 [2023-08-30 17:39:51,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 17:39:51,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:51,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 174 [2023-08-30 17:39:51,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:51,611 INFO L130 PetriNetUnfolder]: 69/164 cut-off events. [2023-08-30 17:39:51,611 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:39:51,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 164 events. 69/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 574 event pairs, 39 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 323. Up to 144 conditions per place. [2023-08-30 17:39:51,612 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 22 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-30 17:39:51,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 104 flow [2023-08-30 17:39:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:39:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:39:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-30 17:39:51,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2023-08-30 17:39:51,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-30 17:39:51,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-30 17:39:51,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:51,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-30 17:39:51,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 17:39:51,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 17:39:51,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 17:39:51,636 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 42 flow. Second operand 3 states and 260 transitions. [2023-08-30 17:39:51,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 104 flow [2023-08-30 17:39:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:39:51,637 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 61 flow [2023-08-30 17:39:51,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-08-30 17:39:51,638 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-30 17:39:51,638 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 61 flow [2023-08-30 17:39:51,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 17:39:51,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:51,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:39:51,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:39:51,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:51,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1539998331, now seen corresponding path program 1 times [2023-08-30 17:39:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450536120] [2023-08-30 17:39:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:51,742 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 17:39:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450536120] [2023-08-30 17:39:51,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450536120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:51,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:39:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097882094] [2023-08-30 17:39:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:51,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:39:51,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:39:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:39:51,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 174 [2023-08-30 17:39:51,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 17:39:51,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:51,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 174 [2023-08-30 17:39:51,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:51,822 INFO L130 PetriNetUnfolder]: 73/170 cut-off events. [2023-08-30 17:39:51,822 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 17:39:51,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 170 events. 73/170 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 637 event pairs, 41 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 368. Up to 138 conditions per place. [2023-08-30 17:39:51,827 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 25 selfloop transitions, 5 changer transitions 1/32 dead transitions. [2023-08-30 17:39:51,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 32 transitions, 145 flow [2023-08-30 17:39:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:39:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:39:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-30 17:39:51,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076628352490421 [2023-08-30 17:39:51,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-30 17:39:51,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-30 17:39:51,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:51,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-30 17:39:51,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 17:39:51,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 17:39:51,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 17:39:51,833 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 61 flow. Second operand 3 states and 265 transitions. [2023-08-30 17:39:51,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 32 transitions, 145 flow [2023-08-30 17:39:51,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:39:51,835 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 91 flow [2023-08-30 17:39:51,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-30 17:39:51,836 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-30 17:39:51,836 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 91 flow [2023-08-30 17:39:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 17:39:51,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:51,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 17:39:51,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:39:51,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:51,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1539668306, now seen corresponding path program 1 times [2023-08-30 17:39:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914397138] [2023-08-30 17:39:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:51,935 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 17:39:51,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:51,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914397138] [2023-08-30 17:39:51,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914397138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:51,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:51,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:39:51,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658389367] [2023-08-30 17:39:51,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:51,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 17:39:51,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 17:39:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 17:39:51,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 174 [2023-08-30 17:39:51,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:39:51,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:51,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 174 [2023-08-30 17:39:51,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:52,078 INFO L130 PetriNetUnfolder]: 90/214 cut-off events. [2023-08-30 17:39:52,079 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-30 17:39:52,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 214 events. 90/214 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 918 event pairs, 24 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 532. Up to 134 conditions per place. [2023-08-30 17:39:52,080 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 37 selfloop transitions, 13 changer transitions 9/60 dead transitions. [2023-08-30 17:39:52,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 324 flow [2023-08-30 17:39:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:39:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:39:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 581 transitions. [2023-08-30 17:39:52,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2023-08-30 17:39:52,085 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 581 transitions. [2023-08-30 17:39:52,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 581 transitions. [2023-08-30 17:39:52,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:52,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 581 transitions. [2023-08-30 17:39:52,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 17:39:52,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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 17:39:52,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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 17:39:52,090 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 91 flow. Second operand 7 states and 581 transitions. [2023-08-30 17:39:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 324 flow [2023-08-30 17:39:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 310 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 17:39:52,092 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 177 flow [2023-08-30 17:39:52,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-30 17:39:52,093 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-08-30 17:39:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 177 flow [2023-08-30 17:39:52,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 17:39:52,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:52,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:39:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:39:52,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:52,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 495428157, now seen corresponding path program 1 times [2023-08-30 17:39:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621207939] [2023-08-30 17:39:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:52,134 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 17:39:52,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:52,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621207939] [2023-08-30 17:39:52,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621207939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:52,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:52,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:39:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317459420] [2023-08-30 17:39:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:39:52,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:39:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:39:52,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 174 [2023-08-30 17:39:52,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 17:39:52,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:52,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 174 [2023-08-30 17:39:52,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:52,171 INFO L130 PetriNetUnfolder]: 0/27 cut-off events. [2023-08-30 17:39:52,172 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 17:39:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 27 events. 0/27 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 10/37 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2023-08-30 17:39:52,172 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 13 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2023-08-30 17:39:52,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 135 flow [2023-08-30 17:39:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:39:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:39:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-08-30 17:39:52,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2023-08-30 17:39:52,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-08-30 17:39:52,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-08-30 17:39:52,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:52,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-08-30 17:39:52,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 17:39:52,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 17:39:52,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 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 17:39:52,177 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 177 flow. Second operand 3 states and 252 transitions. [2023-08-30 17:39:52,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 135 flow [2023-08-30 17:39:52,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 118 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 17:39:52,179 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 80 flow [2023-08-30 17:39:52,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2023-08-30 17:39:52,181 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-30 17:39:52,182 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 80 flow [2023-08-30 17:39:52,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 17:39:52,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:52,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:39:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:39:52,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:52,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash 823585631, now seen corresponding path program 1 times [2023-08-30 17:39:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:52,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292035775] [2023-08-30 17:39:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:52,350 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 17:39:52,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:52,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292035775] [2023-08-30 17:39:52,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292035775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:52,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:52,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 17:39:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571182871] [2023-08-30 17:39:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:52,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 17:39:52,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 17:39:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 17:39:52,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-30 17:39:52,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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 17:39:52,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:52,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-30 17:39:52,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:52,464 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-08-30 17:39:52,464 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:39:52,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-08-30 17:39:52,465 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 10 selfloop transitions, 2 changer transitions 7/20 dead transitions. [2023-08-30 17:39:52,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 20 transitions, 118 flow [2023-08-30 17:39:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:39:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:39:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2023-08-30 17:39:52,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43596059113300495 [2023-08-30 17:39:52,467 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2023-08-30 17:39:52,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2023-08-30 17:39:52,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:52,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2023-08-30 17:39:52,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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 17:39:52,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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 17:39:52,472 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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 17:39:52,472 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 80 flow. Second operand 7 states and 531 transitions. [2023-08-30 17:39:52,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 20 transitions, 118 flow [2023-08-30 17:39:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 20 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:39:52,475 INFO L231 Difference]: Finished difference. Result has 34 places, 13 transitions, 47 flow [2023-08-30 17:39:52,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=47, PETRI_PLACES=34, PETRI_TRANSITIONS=13} [2023-08-30 17:39:52,477 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-30 17:39:52,478 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 13 transitions, 47 flow [2023-08-30 17:39:52,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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 17:39:52,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:39:52,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:39:52,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:39:52,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 17:39:52,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:39:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 342319448, now seen corresponding path program 1 times [2023-08-30 17:39:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:39:52,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986590871] [2023-08-30 17:39:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:39:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:39:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:39:52,637 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 17:39:52,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:39:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986590871] [2023-08-30 17:39:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986590871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:39:52,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:39:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 17:39:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924314542] [2023-08-30 17:39:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:39:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 17:39:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:39:52,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 17:39:52,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 17:39:52,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-30 17:39:52,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 13 transitions, 47 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 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 17:39:52,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:39:52,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-30 17:39:52,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:39:52,744 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-30 17:39:52,745 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:39:52,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 13 events. 0/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-30 17:39:52,745 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-30 17:39:52,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 13 transitions, 70 flow [2023-08-30 17:39:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 17:39:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 17:39:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2023-08-30 17:39:52,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302134646962233 [2023-08-30 17:39:52,747 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2023-08-30 17:39:52,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2023-08-30 17:39:52,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:39:52,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2023-08-30 17:39:52,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.85714285714286) internal successors, (524), 7 states have internal predecessors, (524), 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 17:39:52,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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 17:39:52,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 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 17:39:52,751 INFO L175 Difference]: Start difference. First operand has 34 places, 13 transitions, 47 flow. Second operand 7 states and 524 transitions. [2023-08-30 17:39:52,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 13 transitions, 70 flow [2023-08-30 17:39:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 13 transitions, 60 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 17:39:52,752 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-30 17:39:52,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-30 17:39:52,753 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-08-30 17:39:52,753 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-30 17:39:52,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 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 17:39:52,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-30 17:39:52,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 17:39:52,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-30 17:39:52,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-30 17:39:52,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-30 17:39:52,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-30 17:39:52,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 17:39:52,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:39:52,758 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:39:52,762 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 17:39:52,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 17:39:52,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:39:52 BasicIcfg [2023-08-30 17:39:52,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 17:39:52,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 17:39:52,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 17:39:52,766 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 17:39:52,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:39:48" (3/4) ... [2023-08-30 17:39:52,768 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 17:39:52,772 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 17:39:52,775 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-08-30 17:39:52,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 17:39:52,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 17:39:52,776 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 17:39:52,813 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 17:39:52,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 17:39:52,813 INFO L158 Benchmark]: Toolchain (without parser) took 5455.56ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 52.6MB in the beginning and 61.4MB in the end (delta: -8.9MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,814 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 56.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:39:52,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.17ms. Allocated memory is still 75.5MB. Free memory was 52.4MB in the beginning and 52.0MB in the end (delta: 422.8kB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.16ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,814 INFO L158 Benchmark]: Boogie Preprocessor took 46.73ms. Allocated memory is still 75.5MB. Free memory was 49.9MB in the beginning and 48.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,815 INFO L158 Benchmark]: RCFGBuilder took 453.44ms. Allocated memory is still 75.5MB. Free memory was 48.5MB in the beginning and 34.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,815 INFO L158 Benchmark]: TraceAbstraction took 4415.07ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 34.2MB in the beginning and 64.7MB in the end (delta: -30.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,815 INFO L158 Benchmark]: Witness Printer took 47.59ms. Allocated memory is still 111.1MB. Free memory was 64.7MB in the beginning and 61.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 17:39:52,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 56.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.17ms. Allocated memory is still 75.5MB. Free memory was 52.4MB in the beginning and 52.0MB in the end (delta: 422.8kB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.16ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.73ms. Allocated memory is still 75.5MB. Free memory was 49.9MB in the beginning and 48.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 453.44ms. Allocated memory is still 75.5MB. Free memory was 48.5MB in the beginning and 34.9MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4415.07ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 34.2MB in the beginning and 64.7MB in the end (delta: -30.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 47.59ms. Allocated memory is still 111.1MB. Free memory was 64.7MB in the beginning and 61.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 85 PlacesBefore, 25 PlacesAfterwards, 85 TransitionsBefore, 23 TransitionsAfterwards, 1040 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 2831 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1183, independent: 986, independent conditional: 0, independent unconditional: 986, dependent: 197, dependent conditional: 0, dependent unconditional: 197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 576, independent: 544, independent conditional: 0, independent unconditional: 544, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1183, independent: 442, independent conditional: 0, independent unconditional: 442, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 576, unknown conditional: 0, unknown unconditional: 576] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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, 116 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 22 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 17:39:52,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE