./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c -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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 19:12:16,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 19:12:16,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 19:12:16,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 19:12:16,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 19:12:16,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 19:12:16,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 19:12:16,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 19:12:16,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 19:12:16,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 19:12:16,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 19:12:16,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 19:12:16,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 19:12:16,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 19:12:16,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 19:12:16,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 19:12:16,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 19:12:16,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 19:12:16,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 19:12:16,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 19:12:16,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 19:12:16,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 19:12:16,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 19:12:16,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 19:12:16,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 19:12:16,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 19:12:16,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 19:12:16,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 19:12:16,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 19:12:16,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 19:12:16,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 19:12:16,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 19:12:16,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 19:12:16,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 19:12:16,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 19:12:16,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 19:12:16,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 19:12:16,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 19:12:16,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 19:12:16,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 19:12:16,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 19:12:16,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 19:12:16,657 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 19:12:16,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 19:12:16,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 19:12:16,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 19:12:16,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 19:12:16,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 19:12:16,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 19:12:16,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 19:12:16,661 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 19:12:16,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 19:12:16,662 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 19:12:16,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 19:12:16,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 19:12:16,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 19:12:16,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 19:12:16,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 19:12:16,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 19:12:16,663 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 19:12:16,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 19:12:16,663 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 19:12:16,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 19:12:16,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 19:12:16,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 19:12:16,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 19:12:16,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:12:16,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 19:12:16,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 19:12:16,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 19:12:16,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 19:12:16,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 19:12:16,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 19:12:16,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 19:12:16,666 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 19:12:16,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 19:12:16,666 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 19:12:16,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 19:12:16,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 19:12:16,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 19:12:16,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 19:12:16,976 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 19:12:16,976 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 19:12:16,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-30 19:12:18,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 19:12:18,309 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 19:12:18,310 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-30 19:12:18,316 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a3fbe82/11fc04523f6d43ffb4e24d83a0ddf99e/FLAG9c0b1507a [2023-08-30 19:12:18,328 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a3fbe82/11fc04523f6d43ffb4e24d83a0ddf99e [2023-08-30 19:12:18,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 19:12:18,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 19:12:18,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 19:12:18,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 19:12:18,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 19:12:18,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf11bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18, skipping insertion in model container [2023-08-30 19:12:18,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 19:12:18,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 19:12:18,557 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2023-08-30 19:12:18,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:12:18,583 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 19:12:18,620 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2023-08-30 19:12:18,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:12:18,638 INFO L208 MainTranslator]: Completed translation [2023-08-30 19:12:18,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18 WrapperNode [2023-08-30 19:12:18,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 19:12:18,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 19:12:18,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 19:12:18,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 19:12:18,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,694 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2023-08-30 19:12:18,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 19:12:18,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 19:12:18,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 19:12:18,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 19:12:18,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 19:12:18,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 19:12:18,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 19:12:18,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 19:12:18,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (1/1) ... [2023-08-30 19:12:18,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:12:18,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:12:18,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 19:12:18,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 19:12:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 19:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 19:12:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 19:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 19:12:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 19:12:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 19:12:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 19:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 19:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 19:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 19:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 19:12:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 19:12:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 19:12:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 19:12:18,827 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 19:12:18,975 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 19:12:18,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 19:12:19,248 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 19:12:19,269 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 19:12:19,269 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 19:12:19,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:19 BoogieIcfgContainer [2023-08-30 19:12:19,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 19:12:19,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 19:12:19,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 19:12:19,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 19:12:19,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:18" (1/3) ... [2023-08-30 19:12:19,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b0bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:19, skipping insertion in model container [2023-08-30 19:12:19,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:18" (2/3) ... [2023-08-30 19:12:19,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159b0bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:19, skipping insertion in model container [2023-08-30 19:12:19,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:19" (3/3) ... [2023-08-30 19:12:19,286 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-08-30 19:12:19,302 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 19:12:19,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 19:12:19,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 19:12:19,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 19:12:19,462 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 19:12:19,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 201 transitions, 426 flow [2023-08-30 19:12:19,570 INFO L130 PetriNetUnfolder]: 14/198 cut-off events. [2023-08-30 19:12:19,570 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:12:19,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 14/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 367 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-30 19:12:19,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 201 transitions, 426 flow [2023-08-30 19:12:19,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 188 transitions, 394 flow [2023-08-30 19:12:19,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 19:12:19,594 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 188 transitions, 394 flow [2023-08-30 19:12:19,596 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 188 transitions, 394 flow [2023-08-30 19:12:19,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 188 transitions, 394 flow [2023-08-30 19:12:19,658 INFO L130 PetriNetUnfolder]: 14/188 cut-off events. [2023-08-30 19:12:19,658 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:12:19,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 14/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 366 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-08-30 19:12:19,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 9384 [2023-08-30 19:12:25,281 INFO L134 LiptonReduction]: Checked pairs total: 8713 [2023-08-30 19:12:25,282 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-30 19:12:25,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 19:12:25,298 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;@1da55183, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 19:12:25,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 19:12:25,303 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 19:12:25,304 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:12:25,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:25,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:12:25,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:25,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1579697146, now seen corresponding path program 1 times [2023-08-30 19:12:25,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:25,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489450243] [2023-08-30 19:12:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:25,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:12:27,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489450243] [2023-08-30 19:12:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489450243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:27,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:12:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206341194] [2023-08-30 19:12:27,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:27,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:12:27,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:12:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 19:12:27,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-08-30 19:12:27,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:27,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:27,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-08-30 19:12:27,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:12:27,877 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-08-30 19:12:27,878 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 19:12:27,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 283 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-08-30 19:12:27,879 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-30 19:12:27,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-30 19:12:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:12:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:12:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1054 transitions. [2023-08-30 19:12:27,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172604908946952 [2023-08-30 19:12:27,902 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1054 transitions. [2023-08-30 19:12:27,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1054 transitions. [2023-08-30 19:12:27,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:12:27,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1054 transitions. [2023-08-30 19:12:27,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:27,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:27,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:27,927 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1054 transitions. [2023-08-30 19:12:27,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-30 19:12:27,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 19:12:27,933 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-30 19:12:27,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-30 19:12:27,939 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-30 19:12:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-30 19:12:27,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:27,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:27,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:12:27,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 19:12:27,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:27,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash -65087284, now seen corresponding path program 2 times [2023-08-30 19:12:27,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968349089] [2023-08-30 19:12:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:27,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:12:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:28,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968349089] [2023-08-30 19:12:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968349089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:28,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:28,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:12:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461180330] [2023-08-30 19:12:28,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:12:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:12:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 19:12:29,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-08-30 19:12:29,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:29,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:29,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-08-30 19:12:29,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:12:29,239 INFO L130 PetriNetUnfolder]: 38/116 cut-off events. [2023-08-30 19:12:29,239 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 19:12:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 413 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-08-30 19:12:29,241 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-08-30 19:12:29,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-08-30 19:12:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:12:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:12:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1054 transitions. [2023-08-30 19:12:29,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172604908946952 [2023-08-30 19:12:29,245 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1054 transitions. [2023-08-30 19:12:29,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1054 transitions. [2023-08-30 19:12:29,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:12:29,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1054 transitions. [2023-08-30 19:12:29,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.66666666666666) internal successors, (1054), 6 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:29,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:29,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:29,254 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 1054 transitions. [2023-08-30 19:12:29,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-08-30 19:12:29,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 19:12:29,258 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-08-30 19:12:29,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-30 19:12:29,259 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-30 19:12:29,259 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-08-30 19:12:29,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:29,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:29,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:12:29,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 19:12:29,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:29,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 255126654, now seen corresponding path program 3 times [2023-08-30 19:12:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588167457] [2023-08-30 19:12:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:12:30,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:30,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588167457] [2023-08-30 19:12:30,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588167457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:30,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:30,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:12:30,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083480836] [2023-08-30 19:12:30,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:30,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:12:30,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:12:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 19:12:30,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-08-30 19:12:30,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:30,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:30,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-08-30 19:12:30,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:12:30,886 INFO L130 PetriNetUnfolder]: 33/103 cut-off events. [2023-08-30 19:12:30,886 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-08-30 19:12:30,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-08-30 19:12:30,887 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-30 19:12:30,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-08-30 19:12:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:12:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:12:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1052 transitions. [2023-08-30 19:12:30,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164687252573238 [2023-08-30 19:12:30,892 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1052 transitions. [2023-08-30 19:12:30,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1052 transitions. [2023-08-30 19:12:30,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:12:30,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1052 transitions. [2023-08-30 19:12:30,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:30,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:30,900 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:30,900 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 1052 transitions. [2023-08-30 19:12:30,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-08-30 19:12:30,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 19:12:30,903 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-08-30 19:12:30,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-08-30 19:12:30,904 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-30 19:12:30,904 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-08-30 19:12:30,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:30,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:30,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:12:30,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 19:12:30,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:30,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1251070020, now seen corresponding path program 4 times [2023-08-30 19:12:30,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:30,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492649349] [2023-08-30 19:12:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:30,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:12:31,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:31,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492649349] [2023-08-30 19:12:31,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492649349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:31,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:31,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:12:31,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123909995] [2023-08-30 19:12:31,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:31,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 19:12:31,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 19:12:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 19:12:31,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 421 [2023-08-30 19:12:31,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:31,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:31,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 421 [2023-08-30 19:12:31,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:12:32,296 INFO L130 PetriNetUnfolder]: 17/59 cut-off events. [2023-08-30 19:12:32,297 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-30 19:12:32,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-08-30 19:12:32,297 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-30 19:12:32,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-08-30 19:12:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:12:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:12:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1044 transitions. [2023-08-30 19:12:32,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41330166270783847 [2023-08-30 19:12:32,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1044 transitions. [2023-08-30 19:12:32,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1044 transitions. [2023-08-30 19:12:32,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:12:32,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1044 transitions. [2023-08-30 19:12:32,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:32,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:32,310 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:32,310 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 1044 transitions. [2023-08-30 19:12:32,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-08-30 19:12:32,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 19:12:32,315 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-08-30 19:12:32,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-08-30 19:12:32,316 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-30 19:12:32,316 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-08-30 19:12:32,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:32,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:32,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:12:32,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 19:12:32,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:32,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1460522632, now seen corresponding path program 5 times [2023-08-30 19:12:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:32,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588937302] [2023-08-30 19:12:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:12:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588937302] [2023-08-30 19:12:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588937302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:33,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:33,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:12:33,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274614787] [2023-08-30 19:12:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:33,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:12:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:33,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:12:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:12:33,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 421 [2023-08-30 19:12:33,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:33,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:33,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 421 [2023-08-30 19:12:33,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:12:33,770 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-30 19:12:33,770 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 19:12:33,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-08-30 19:12:33,771 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-30 19:12:33,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 178 flow [2023-08-30 19:12:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:12:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:12:33,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1186 transitions. [2023-08-30 19:12:33,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024431625381744 [2023-08-30 19:12:33,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1186 transitions. [2023-08-30 19:12:33,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1186 transitions. [2023-08-30 19:12:33,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:12:33,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1186 transitions. [2023-08-30 19:12:33,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.42857142857142) internal successors, (1186), 7 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:33,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 421.0) internal successors, (3368), 8 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:33,783 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 421.0) internal successors, (3368), 8 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:33,783 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 7 states and 1186 transitions. [2023-08-30 19:12:33,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 178 flow [2023-08-30 19:12:33,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 19:12:33,785 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 56 flow [2023-08-30 19:12:33,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=56, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2023-08-30 19:12:33,787 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-30 19:12:33,787 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 56 flow [2023-08-30 19:12:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:33,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:33,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:12:33,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 19:12:33,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:33,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2031977438, now seen corresponding path program 6 times [2023-08-30 19:12:33,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:33,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373236450] [2023-08-30 19:12:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:12:34,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373236450] [2023-08-30 19:12:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373236450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:34,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:12:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295056117] [2023-08-30 19:12:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:12:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:12:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:12:35,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 421 [2023-08-30 19:12:35,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 56 flow. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:35,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:35,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 421 [2023-08-30 19:12:35,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:12:35,382 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 19:12:35,382 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 19:12:35,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-08-30 19:12:35,382 INFO L137 encePairwiseOnDemand]: 416/421 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-30 19:12:35,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 94 flow [2023-08-30 19:12:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:12:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:12:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1009 transitions. [2023-08-30 19:12:35,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994457640538401 [2023-08-30 19:12:35,386 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1009 transitions. [2023-08-30 19:12:35,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1009 transitions. [2023-08-30 19:12:35,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:12:35,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1009 transitions. [2023-08-30 19:12:35,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.16666666666666) internal successors, (1009), 6 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:35,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:35,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 421.0) internal successors, (2947), 7 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:35,393 INFO L175 Difference]: Start difference. First operand has 34 places, 16 transitions, 56 flow. Second operand 6 states and 1009 transitions. [2023-08-30 19:12:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 94 flow [2023-08-30 19:12:35,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 19:12:35,394 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-30 19:12:35,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=421, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-30 19:12:35,398 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-30 19:12:35,398 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-30 19:12:35,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:35,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 19:12:35,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 19:12:35,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 19:12:35,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 19:12:35,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 19:12:35,406 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-30 19:12:35,408 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 19:12:35,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 19:12:35,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:12:35 BasicIcfg [2023-08-30 19:12:35,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 19:12:35,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 19:12:35,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 19:12:35,412 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 19:12:35,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:19" (3/4) ... [2023-08-30 19:12:35,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 19:12:35,419 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 19:12:35,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 19:12:35,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 19:12:35,430 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 19:12:35,430 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 19:12:35,430 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 19:12:35,431 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 19:12:35,464 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 19:12:35,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 19:12:35,468 INFO L158 Benchmark]: Toolchain (without parser) took 17137.26ms. Allocated memory was 71.3MB in the beginning and 283.1MB in the end (delta: 211.8MB). Free memory was 49.1MB in the beginning and 136.2MB in the end (delta: -87.1MB). Peak memory consumption was 126.0MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,469 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 19:12:35,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.44ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 37.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.43ms. Allocated memory is still 71.3MB. Free memory was 37.7MB in the beginning and 35.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,470 INFO L158 Benchmark]: Boogie Preprocessor took 50.66ms. Allocated memory is still 71.3MB. Free memory was 35.6MB in the beginning and 34.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,470 INFO L158 Benchmark]: RCFGBuilder took 524.51ms. Allocated memory is still 71.3MB. Free memory was 34.2MB in the beginning and 35.6MB in the end (delta: -1.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,471 INFO L158 Benchmark]: TraceAbstraction took 16139.03ms. Allocated memory was 71.3MB in the beginning and 283.1MB in the end (delta: 211.8MB). Free memory was 35.0MB in the beginning and 139.4MB in the end (delta: -104.4MB). Peak memory consumption was 105.7MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,471 INFO L158 Benchmark]: Witness Printer took 56.18ms. Allocated memory is still 283.1MB. Free memory was 139.4MB in the beginning and 136.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 19:12:35,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.44ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 37.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.43ms. Allocated memory is still 71.3MB. Free memory was 37.7MB in the beginning and 35.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.66ms. Allocated memory is still 71.3MB. Free memory was 35.6MB in the beginning and 34.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.51ms. Allocated memory is still 71.3MB. Free memory was 34.2MB in the beginning and 35.6MB in the end (delta: -1.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16139.03ms. Allocated memory was 71.3MB in the beginning and 283.1MB in the end (delta: 211.8MB). Free memory was 35.0MB in the beginning and 139.4MB in the end (delta: -104.4MB). Peak memory consumption was 105.7MB. Max. memory is 16.1GB. * Witness Printer took 56.18ms. Allocated memory is still 283.1MB. Free memory was 139.4MB in the beginning and 136.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 184 PlacesBefore, 26 PlacesAfterwards, 188 TransitionsBefore, 16 TransitionsAfterwards, 9384 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 44 ConcurrentYvCompositions, 14 ChoiceCompositions, 220 TotalNumberOfCompositions, 8713 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8713, independent: 8713, independent conditional: 0, independent unconditional: 8713, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5808, independent: 5808, independent conditional: 0, independent unconditional: 5808, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8713, independent: 2905, independent conditional: 0, independent unconditional: 2905, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 5808, unknown conditional: 0, unknown unconditional: 5808] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 81]: 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 7 procedures, 284 locations, 4 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: 15.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1132 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 730 mSDsluCounter, 848 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 608 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1701 IncrementalHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 240 mSDtfsCounter, 1701 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 37, 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, 0.4s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 19:12:35,491 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