./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 00:04:32,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 00:04:32,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 00:04:32,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 00:04:32,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 00:04:32,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 00:04:32,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 00:04:32,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 00:04:32,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 00:04:32,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 00:04:32,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 00:04:32,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 00:04:32,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 00:04:32,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 00:04:32,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 00:04:32,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 00:04:32,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 00:04:32,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 00:04:32,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 00:04:32,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 00:04:32,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 00:04:32,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 00:04:32,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 00:04:32,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 00:04:32,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 00:04:32,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 00:04:32,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 00:04:32,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 00:04:32,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 00:04:32,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 00:04:32,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 00:04:32,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 00:04:32,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 00:04:32,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 00:04:32,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 00:04:32,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 00:04:32,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 00:04:32,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 00:04:32,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 00:04:32,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 00:04:32,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 00:04:32,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 00:04:32,410 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 00:04:32,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 00:04:32,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 00:04:32,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 00:04:32,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 00:04:32,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 00:04:32,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 00:04:32,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 00:04:32,414 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 00:04:32,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 00:04:32,415 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 00:04:32,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 00:04:32,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 00:04:32,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 00:04:32,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 00:04:32,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 00:04:32,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 00:04:32,416 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 00:04:32,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 00:04:32,416 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 00:04:32,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 00:04:32,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 00:04:32,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 00:04:32,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 00:04:32,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:04:32,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 00:04:32,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 00:04:32,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 00:04:32,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 00:04:32,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 00:04:32,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 00:04:32,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 00:04:32,419 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 00:04:32,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 00:04:32,420 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 00:04:32,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 00:04:32,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 00:04:32,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 00:04:32,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 00:04:32,763 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 00:04:32,763 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 00:04:32,764 INFO L432 ainManager$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 [2023-08-31 00:04:33,863 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 00:04:34,136 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 00:04:34,137 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2023-08-31 00:04:34,150 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d34a9c48/e8de3d46473743eca570d7f8c18c2037/FLAG60766c143 [2023-08-31 00:04:34,162 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d34a9c48/e8de3d46473743eca570d7f8c18c2037 [2023-08-31 00:04:34,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 00:04:34,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 00:04:34,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 00:04:34,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 00:04:34,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 00:04:34,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c31e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34, skipping insertion in model container [2023-08-31 00:04:34,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 00:04:34,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 00:04:34,368 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] [2023-08-31 00:04:34,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:04:34,554 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 00:04:34,568 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] [2023-08-31 00:04:34,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:04:34,651 INFO L208 MainTranslator]: Completed translation [2023-08-31 00:04:34,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34 WrapperNode [2023-08-31 00:04:34,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 00:04:34,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 00:04:34,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 00:04:34,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 00:04:34,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,714 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2023-08-31 00:04:34,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 00:04:34,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 00:04:34,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 00:04:34,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 00:04:34,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,754 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 00:04:34,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 00:04:34,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 00:04:34,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 00:04:34,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (1/1) ... [2023-08-31 00:04:34,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:04:34,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:04:34,806 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) [2023-08-31 00:04:34,832 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 [2023-08-31 00:04:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 00:04:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 00:04:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 00:04:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 00:04:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 00:04:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 00:04:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 00:04:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 00:04:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 00:04:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 00:04:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 00:04:34,853 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 00:04:35,038 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 00:04:35,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 00:04:35,229 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 00:04:35,235 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 00:04:35,237 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 00:04:35,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:04:35 BoogieIcfgContainer [2023-08-31 00:04:35,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 00:04:35,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 00:04:35,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 00:04:35,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 00:04:35,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:04:34" (1/3) ... [2023-08-31 00:04:35,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53429e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:04:35, skipping insertion in model container [2023-08-31 00:04:35,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:34" (2/3) ... [2023-08-31 00:04:35,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53429e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:04:35, skipping insertion in model container [2023-08-31 00:04:35,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:04:35" (3/3) ... [2023-08-31 00:04:35,248 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2023-08-31 00:04:35,256 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 00:04:35,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 00:04:35,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 00:04:35,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 00:04:35,321 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 00:04:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 194 flow [2023-08-31 00:04:35,423 INFO L130 PetriNetUnfolder]: 4/92 cut-off events. [2023-08-31 00:04:35,423 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 00:04:35,429 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. [2023-08-31 00:04:35,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 194 flow [2023-08-31 00:04:35,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 173 flow [2023-08-31 00:04:35,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:04:35,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 85 transitions, 173 flow [2023-08-31 00:04:35,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 85 transitions, 173 flow [2023-08-31 00:04:35,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 85 transitions, 173 flow [2023-08-31 00:04:35,485 INFO L130 PetriNetUnfolder]: 4/85 cut-off events. [2023-08-31 00:04:35,486 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:04:35,486 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. [2023-08-31 00:04:35,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 1040 [2023-08-31 00:04:37,969 INFO L134 LiptonReduction]: Checked pairs total: 2831 [2023-08-31 00:04:37,969 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-31 00:04:37,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:04:37,988 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;@2f4202d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:04:37,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-31 00:04:37,990 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 00:04:37,990 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:04:37,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:37,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 00:04:37,991 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)] === [2023-08-31 00:04:37,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash 345, now seen corresponding path program 1 times [2023-08-31 00:04:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383121213] [2023-08-31 00:04:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:38,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:38,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383121213] [2023-08-31 00:04:38,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383121213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:38,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:38,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 00:04:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915759354] [2023-08-31 00:04:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:38,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 00:04:38,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 00:04:38,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 00:04:38,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2023-08-31 00:04:38,128 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) [2023-08-31 00:04:38,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:38,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2023-08-31 00:04:38,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:38,218 INFO L130 PetriNetUnfolder]: 63/154 cut-off events. [2023-08-31 00:04:38,219 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:04:38,219 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. [2023-08-31 00:04:38,221 INFO L137 encePairwiseOnDemand]: 171/174 looper letters, 18 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-31 00:04:38,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 79 flow [2023-08-31 00:04:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 00:04:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 00:04:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 187 transitions. [2023-08-31 00:04:38,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2023-08-31 00:04:38,264 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 187 transitions. [2023-08-31 00:04:38,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 187 transitions. [2023-08-31 00:04:38,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:38,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 187 transitions. [2023-08-31 00:04:38,270 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) [2023-08-31 00:04:38,274 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) [2023-08-31 00:04:38,275 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) [2023-08-31 00:04:38,276 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 2 states and 187 transitions. [2023-08-31 00:04:38,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 79 flow [2023-08-31 00:04:38,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 00:04:38,280 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 42 flow [2023-08-31 00:04:38,281 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} [2023-08-31 00:04:38,284 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2023-08-31 00:04:38,285 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 42 flow [2023-08-31 00:04:38,285 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) [2023-08-31 00:04:38,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:38,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 00:04:38,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 00:04:38,286 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)] === [2023-08-31 00:04:38,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:38,287 INFO L85 PathProgramCache]: Analyzing trace with hash 10541050, now seen corresponding path program 1 times [2023-08-31 00:04:38,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:38,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088128051] [2023-08-31 00:04:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:38,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088128051] [2023-08-31 00:04:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088128051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:38,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:38,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 00:04:38,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628381928] [2023-08-31 00:04:38,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:04:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:04:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:04:38,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 174 [2023-08-31 00:04:38,592 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) [2023-08-31 00:04:38,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:38,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 174 [2023-08-31 00:04:38,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:38,636 INFO L130 PetriNetUnfolder]: 69/164 cut-off events. [2023-08-31 00:04:38,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:04:38,637 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. [2023-08-31 00:04:38,638 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 22 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-31 00:04:38,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 104 flow [2023-08-31 00:04:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:04:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:04:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-31 00:04:38,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2023-08-31 00:04:38,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-31 00:04:38,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-31 00:04:38,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:38,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-31 00:04:38,643 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) [2023-08-31 00:04:38,645 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) [2023-08-31 00:04:38,645 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) [2023-08-31 00:04:38,645 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 42 flow. Second operand 3 states and 260 transitions. [2023-08-31 00:04:38,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 104 flow [2023-08-31 00:04:38,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 00:04:38,647 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 61 flow [2023-08-31 00:04:38,647 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} [2023-08-31 00:04:38,648 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-31 00:04:38,648 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 61 flow [2023-08-31 00:04:38,648 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) [2023-08-31 00:04:38,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:38,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 00:04:38,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 00:04:38,649 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)] === [2023-08-31 00:04:38,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1539998331, now seen corresponding path program 1 times [2023-08-31 00:04:38,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:38,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110172340] [2023-08-31 00:04:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:38,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:38,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110172340] [2023-08-31 00:04:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110172340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 00:04:38,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84706166] [2023-08-31 00:04:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:38,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:04:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:04:38,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:04:38,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 174 [2023-08-31 00:04:38,741 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) [2023-08-31 00:04:38,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:38,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 174 [2023-08-31 00:04:38,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:38,801 INFO L130 PetriNetUnfolder]: 73/170 cut-off events. [2023-08-31 00:04:38,801 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-31 00:04:38,805 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. [2023-08-31 00:04:38,806 INFO L137 encePairwiseOnDemand]: 168/174 looper letters, 25 selfloop transitions, 5 changer transitions 1/32 dead transitions. [2023-08-31 00:04:38,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 32 transitions, 145 flow [2023-08-31 00:04:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:04:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:04:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-31 00:04:38,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076628352490421 [2023-08-31 00:04:38,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-31 00:04:38,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-31 00:04:38,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:38,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-31 00:04:38,812 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) [2023-08-31 00:04:38,813 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) [2023-08-31 00:04:38,814 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) [2023-08-31 00:04:38,814 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 61 flow. Second operand 3 states and 265 transitions. [2023-08-31 00:04:38,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 32 transitions, 145 flow [2023-08-31 00:04:38,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 00:04:38,815 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 91 flow [2023-08-31 00:04:38,816 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} [2023-08-31 00:04:38,816 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-31 00:04:38,817 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 91 flow [2023-08-31 00:04:38,817 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) [2023-08-31 00:04:38,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:38,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 00:04:38,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 00:04:38,818 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)] === [2023-08-31 00:04:38,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1539668306, now seen corresponding path program 1 times [2023-08-31 00:04:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171498677] [2023-08-31 00:04:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:38,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171498677] [2023-08-31 00:04:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171498677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:38,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:38,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 00:04:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250792593] [2023-08-31 00:04:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 00:04:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 00:04:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 00:04:38,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 174 [2023-08-31 00:04:38,956 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) [2023-08-31 00:04:38,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:38,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 174 [2023-08-31 00:04:38,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:39,056 INFO L130 PetriNetUnfolder]: 90/214 cut-off events. [2023-08-31 00:04:39,056 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-31 00:04:39,057 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. [2023-08-31 00:04:39,058 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 37 selfloop transitions, 13 changer transitions 9/60 dead transitions. [2023-08-31 00:04:39,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 324 flow [2023-08-31 00:04:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 00:04:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 00:04:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 581 transitions. [2023-08-31 00:04:39,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2023-08-31 00:04:39,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 581 transitions. [2023-08-31 00:04:39,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 581 transitions. [2023-08-31 00:04:39,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:39,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 581 transitions. [2023-08-31 00:04:39,062 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) [2023-08-31 00:04:39,065 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) [2023-08-31 00:04:39,065 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) [2023-08-31 00:04:39,066 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 91 flow. Second operand 7 states and 581 transitions. [2023-08-31 00:04:39,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 324 flow [2023-08-31 00:04:39,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 310 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 00:04:39,068 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 177 flow [2023-08-31 00:04:39,068 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} [2023-08-31 00:04:39,069 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-08-31 00:04:39,069 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 177 flow [2023-08-31 00:04:39,070 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) [2023-08-31 00:04:39,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:39,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:04:39,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 00:04:39,070 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)] === [2023-08-31 00:04:39,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:39,071 INFO L85 PathProgramCache]: Analyzing trace with hash 495428157, now seen corresponding path program 1 times [2023-08-31 00:04:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:39,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311181984] [2023-08-31 00:04:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:39,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:39,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311181984] [2023-08-31 00:04:39,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311181984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:39,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 00:04:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932826065] [2023-08-31 00:04:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:39,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:04:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:04:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:04:39,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 174 [2023-08-31 00:04:39,143 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) [2023-08-31 00:04:39,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:39,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 174 [2023-08-31 00:04:39,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:39,164 INFO L130 PetriNetUnfolder]: 0/27 cut-off events. [2023-08-31 00:04:39,164 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-31 00:04:39,165 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. [2023-08-31 00:04:39,165 INFO L137 encePairwiseOnDemand]: 170/174 looper letters, 13 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2023-08-31 00:04:39,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 135 flow [2023-08-31 00:04:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 00:04:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 00:04:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2023-08-31 00:04:39,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2023-08-31 00:04:39,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2023-08-31 00:04:39,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2023-08-31 00:04:39,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:39,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2023-08-31 00:04:39,168 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) [2023-08-31 00:04:39,169 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) [2023-08-31 00:04:39,169 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) [2023-08-31 00:04:39,170 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 177 flow. Second operand 3 states and 252 transitions. [2023-08-31 00:04:39,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 135 flow [2023-08-31 00:04:39,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 118 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-31 00:04:39,171 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 80 flow [2023-08-31 00:04:39,172 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} [2023-08-31 00:04:39,172 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-31 00:04:39,172 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 80 flow [2023-08-31 00:04:39,173 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) [2023-08-31 00:04:39,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:39,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:04:39,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 00:04:39,174 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)] === [2023-08-31 00:04:39,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:39,174 INFO L85 PathProgramCache]: Analyzing trace with hash 823585631, now seen corresponding path program 1 times [2023-08-31 00:04:39,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147161690] [2023-08-31 00:04:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:39,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147161690] [2023-08-31 00:04:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147161690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:39,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 00:04:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358766964] [2023-08-31 00:04:39,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:39,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 00:04:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 00:04:39,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 00:04:39,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-31 00:04:39,373 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) [2023-08-31 00:04:39,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:39,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-31 00:04:39,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:39,452 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-08-31 00:04:39,452 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:04:39,452 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. [2023-08-31 00:04:39,452 INFO L137 encePairwiseOnDemand]: 166/174 looper letters, 10 selfloop transitions, 2 changer transitions 7/20 dead transitions. [2023-08-31 00:04:39,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 20 transitions, 118 flow [2023-08-31 00:04:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 00:04:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 00:04:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2023-08-31 00:04:39,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43596059113300495 [2023-08-31 00:04:39,455 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2023-08-31 00:04:39,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2023-08-31 00:04:39,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:39,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2023-08-31 00:04:39,457 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) [2023-08-31 00:04:39,460 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) [2023-08-31 00:04:39,460 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) [2023-08-31 00:04:39,460 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 80 flow. Second operand 7 states and 531 transitions. [2023-08-31 00:04:39,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 20 transitions, 118 flow [2023-08-31 00:04:39,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 20 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 00:04:39,463 INFO L231 Difference]: Finished difference. Result has 34 places, 13 transitions, 47 flow [2023-08-31 00:04:39,463 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} [2023-08-31 00:04:39,470 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-31 00:04:39,470 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 13 transitions, 47 flow [2023-08-31 00:04:39,470 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) [2023-08-31 00:04:39,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:04:39,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:04:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 00:04:39,471 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)] === [2023-08-31 00:04:39,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:04:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash 342319448, now seen corresponding path program 1 times [2023-08-31 00:04:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:04:39,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027753303] [2023-08-31 00:04:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:04:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:04:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:04:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:04:39,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:04:39,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027753303] [2023-08-31 00:04:39,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027753303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:04:39,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:04:39,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 00:04:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538901499] [2023-08-31 00:04:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:04:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 00:04:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:04:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 00:04:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 00:04:39,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 174 [2023-08-31 00:04:39,688 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) [2023-08-31 00:04:39,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:04:39,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 174 [2023-08-31 00:04:39,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 00:04:39,743 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-31 00:04:39,743 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 00:04:39,743 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. [2023-08-31 00:04:39,743 INFO L137 encePairwiseOnDemand]: 167/174 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-31 00:04:39,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 13 transitions, 70 flow [2023-08-31 00:04:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 00:04:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 00:04:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 524 transitions. [2023-08-31 00:04:39,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302134646962233 [2023-08-31 00:04:39,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 524 transitions. [2023-08-31 00:04:39,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 524 transitions. [2023-08-31 00:04:39,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 00:04:39,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 524 transitions. [2023-08-31 00:04:39,747 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) [2023-08-31 00:04:39,748 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) [2023-08-31 00:04:39,749 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) [2023-08-31 00:04:39,749 INFO L175 Difference]: Start difference. First operand has 34 places, 13 transitions, 47 flow. Second operand 7 states and 524 transitions. [2023-08-31 00:04:39,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 13 transitions, 70 flow [2023-08-31 00:04:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 13 transitions, 60 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-31 00:04:39,750 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-31 00:04:39,750 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} [2023-08-31 00:04:39,750 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-08-31 00:04:39,750 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-31 00:04:39,751 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) [2023-08-31 00:04:39,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-31 00:04:39,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-31 00:04:39,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-31 00:04:39,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-31 00:04:39,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-31 00:04:39,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-31 00:04:39,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-31 00:04:39,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 00:04:39,754 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:04:39,758 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 00:04:39,758 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 00:04:39,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 12:04:39 BasicIcfg [2023-08-31 00:04:39,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 00:04:39,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 00:04:39,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 00:04:39,762 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 00:04:39,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:04:35" (3/4) ... [2023-08-31 00:04:39,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 00:04:39,769 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-31 00:04:39,772 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-08-31 00:04:39,772 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-31 00:04:39,772 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 00:04:39,773 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 00:04:39,798 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 00:04:39,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 00:04:39,799 INFO L158 Benchmark]: Toolchain (without parser) took 5633.55ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 68.0MB in the beginning and 71.8MB in the end (delta: -3.9MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2023-08-31 00:04:39,799 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 00:04:39,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.78ms. Allocated memory is still 88.1MB. Free memory was 67.7MB in the beginning and 48.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-31 00:04:39,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.12ms. Allocated memory is still 88.1MB. Free memory was 48.8MB in the beginning and 46.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 00:04:39,799 INFO L158 Benchmark]: Boogie Preprocessor took 48.81ms. Allocated memory is still 88.1MB. Free memory was 46.7MB in the beginning and 45.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 00:04:39,800 INFO L158 Benchmark]: RCFGBuilder took 475.14ms. Allocated memory is still 88.1MB. Free memory was 45.2MB in the beginning and 55.0MB in the end (delta: -9.9MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-08-31 00:04:39,800 INFO L158 Benchmark]: TraceAbstraction took 4518.73ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 54.6MB in the beginning and 73.9MB in the end (delta: -19.3MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2023-08-31 00:04:39,800 INFO L158 Benchmark]: Witness Printer took 36.69ms. Allocated memory is still 130.0MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 00:04:39,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.78ms. Allocated memory is still 88.1MB. Free memory was 67.7MB in the beginning and 48.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.12ms. Allocated memory is still 88.1MB. Free memory was 48.8MB in the beginning and 46.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.81ms. Allocated memory is still 88.1MB. Free memory was 46.7MB in the beginning and 45.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 475.14ms. Allocated memory is still 88.1MB. Free memory was 45.2MB in the beginning and 55.0MB in the end (delta: -9.9MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4518.73ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 54.6MB in the beginning and 73.9MB in the end (delta: -19.3MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Witness Printer took 36.69ms. Allocated memory is still 130.0MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 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: 4.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, 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! [2023-08-31 00:04:39,827 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