./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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 ../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.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 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:59:26,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:59:26,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:59:26,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:59:26,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:59:26,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:59:26,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:59:26,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:59:26,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:59:26,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:59:26,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:59:26,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:59:26,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:59:26,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:59:26,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:59:26,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:59:26,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:59:26,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:59:26,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:59:26,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:59:26,816 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:59:26,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:59:26,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:59:26,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:59:26,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:59:26,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:59:26,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:59:26,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:59:26,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:59:26,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:59:26,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:59:26,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:59:26,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:59:26,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:59:26,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:59:26,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:59:26,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:59:26,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:59:26,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:59:26,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:59:26,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:59:26,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:59:26,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:59:26,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:59:26,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:59:26,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:59:26,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:59:26,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:59:26,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:59:26,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:59:26,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:59:26,870 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:59:26,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:59:26,871 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:59:26,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:59:26,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:59:26,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:59:26,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:59:26,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:59:26,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:59:26,872 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:59:26,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:59:26,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:59:26,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:59:26,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:59:26,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:59:26,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:59:26,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:59:26,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:59:26,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:59:26,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:59:26,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:59:26,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:59:26,876 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:59:26,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:59:26,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:59:26,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 [2022-07-13 21:59:27,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:59:27,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:59:27,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:59:27,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:59:27,134 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:59:27,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-07-13 21:59:27,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab53bf48/405002b3cd4149c397a94e8b26ce031e/FLAG8b58f5250 [2022-07-13 21:59:27,705 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:59:27,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-07-13 21:59:27,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab53bf48/405002b3cd4149c397a94e8b26ce031e/FLAG8b58f5250 [2022-07-13 21:59:28,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab53bf48/405002b3cd4149c397a94e8b26ce031e [2022-07-13 21:59:28,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:59:28,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:59:28,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:59:28,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:59:28,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:59:28,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36311038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28, skipping insertion in model container [2022-07-13 21:59:28,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:59:28,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:59:28,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-07-13 21:59:28,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:59:28,490 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:59:28,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-07-13 21:59:28,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:59:28,582 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:59:28,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28 WrapperNode [2022-07-13 21:59:28,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:59:28,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:59:28,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:59:28,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:59:28,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,649 INFO L137 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-07-13 21:59:28,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:59:28,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:59:28,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:59:28,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:59:28,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:59:28,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:59:28,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:59:28,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:59:28,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (1/1) ... [2022-07-13 21:59:28,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:59:28,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:59:28,736 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) [2022-07-13 21:59:28,754 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 [2022-07-13 21:59:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:59:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:59:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:59:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:59:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 21:59:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 21:59:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:59:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:59:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:59:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:59:28,780 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:59:28,904 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:59:28,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:59:29,204 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:59:29,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:59:29,211 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:59:29,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:59:29 BoogieIcfgContainer [2022-07-13 21:59:29,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:59:29,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:59:29,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:59:29,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:59:29,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:59:28" (1/3) ... [2022-07-13 21:59:29,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef7eee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:59:29, skipping insertion in model container [2022-07-13 21:59:29,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:28" (2/3) ... [2022-07-13 21:59:29,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef7eee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:59:29, skipping insertion in model container [2022-07-13 21:59:29,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:59:29" (3/3) ... [2022-07-13 21:59:29,232 INFO L111 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-07-13 21:59:29,236 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:59:29,256 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:59:29,257 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-13 21:59:29,257 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:59:29,348 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:59:29,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 371 flow [2022-07-13 21:59:29,443 INFO L129 PetriNetUnfolder]: 8/186 cut-off events. [2022-07-13 21:59:29,444 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:59:29,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 186 events. 8/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-07-13 21:59:29,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 183 transitions, 371 flow [2022-07-13 21:59:29,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 181 transitions, 365 flow [2022-07-13 21:59:29,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:59:29,470 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2874973a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e6e400 [2022-07-13 21:59:29,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 21:59:29,488 INFO L129 PetriNetUnfolder]: 1/96 cut-off events. [2022-07-13 21:59:29,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:59:29,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:29,490 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:29,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:29,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash -930805020, now seen corresponding path program 1 times [2022-07-13 21:59:29,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:29,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519240794] [2022-07-13 21:59:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:29,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:29,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:29,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519240794] [2022-07-13 21:59:29,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519240794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:29,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:29,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620496715] [2022-07-13 21:59:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:29,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:29,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:29,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:29,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:29,990 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-07-13 21:59:29,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 365 flow. Second operand has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 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) [2022-07-13 21:59:29,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:29,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-07-13 21:59:29,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:30,447 INFO L129 PetriNetUnfolder]: 95/1143 cut-off events. [2022-07-13 21:59:30,448 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:59:30,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 1143 events. 95/1143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7372 event pairs, 25 based on Foata normal form. 93/1163 useless extension candidates. Maximal degree in co-relation 1332. Up to 89 conditions per place. [2022-07-13 21:59:30,459 INFO L132 encePairwiseOnDemand]: 161/183 looper letters, 52 selfloop transitions, 38 changer transitions 11/239 dead transitions. [2022-07-13 21:59:30,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 239 transitions, 673 flow [2022-07-13 21:59:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 21:59:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-13 21:59:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2885 transitions. [2022-07-13 21:59:30,480 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8297382801265458 [2022-07-13 21:59:30,481 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2885 transitions. [2022-07-13 21:59:30,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2885 transitions. [2022-07-13 21:59:30,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2885 transitions. [2022-07-13 21:59:30,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 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) [2022-07-13 21:59:30,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 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) [2022-07-13 21:59:30,510 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 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) [2022-07-13 21:59:30,512 INFO L186 Difference]: Start difference. First operand has 177 places, 181 transitions, 365 flow. Second operand 19 states and 2885 transitions. [2022-07-13 21:59:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 239 transitions, 673 flow [2022-07-13 21:59:30,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 239 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:59:30,523 INFO L242 Difference]: Finished difference. Result has 196 places, 197 transitions, 514 flow [2022-07-13 21:59:30,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=514, PETRI_PLACES=196, PETRI_TRANSITIONS=197} [2022-07-13 21:59:30,527 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 19 predicate places. [2022-07-13 21:59:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 197 transitions, 514 flow [2022-07-13 21:59:30,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 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) [2022-07-13 21:59:30,529 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:30,529 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:59:30,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1816353862, now seen corresponding path program 1 times [2022-07-13 21:59:30,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:30,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53035989] [2022-07-13 21:59:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:30,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53035989] [2022-07-13 21:59:30,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53035989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:30,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:30,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:59:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237868636] [2022-07-13 21:59:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:59:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:59:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:59:30,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-07-13 21:59:30,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 197 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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) [2022-07-13 21:59:30,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:30,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-07-13 21:59:30,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:30,914 INFO L129 PetriNetUnfolder]: 19/584 cut-off events. [2022-07-13 21:59:30,914 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-07-13 21:59:30,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 584 events. 19/584 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2335 event pairs, 6 based on Foata normal form. 8/573 useless extension candidates. Maximal degree in co-relation 735. Up to 36 conditions per place. [2022-07-13 21:59:30,921 INFO L132 encePairwiseOnDemand]: 175/183 looper letters, 24 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2022-07-13 21:59:30,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 180 transitions, 487 flow [2022-07-13 21:59:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:59:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 21:59:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2022-07-13 21:59:30,924 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2022-07-13 21:59:30,925 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2022-07-13 21:59:30,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2022-07-13 21:59:30,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:30,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2022-07-13 21:59:30,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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) [2022-07-13 21:59:30,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-07-13 21:59:30,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 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) [2022-07-13 21:59:30,930 INFO L186 Difference]: Start difference. First operand has 196 places, 197 transitions, 514 flow. Second operand 5 states and 765 transitions. [2022-07-13 21:59:30,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 180 transitions, 487 flow [2022-07-13 21:59:30,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 180 transitions, 479 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-07-13 21:59:30,940 INFO L242 Difference]: Finished difference. Result has 183 places, 174 transitions, 427 flow [2022-07-13 21:59:30,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2022-07-13 21:59:30,941 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 6 predicate places. [2022-07-13 21:59:30,941 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 427 flow [2022-07-13 21:59:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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) [2022-07-13 21:59:30,942 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:30,943 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:30,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:59:30,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 621951114, now seen corresponding path program 1 times [2022-07-13 21:59:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:30,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740218813] [2022-07-13 21:59:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:31,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:31,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740218813] [2022-07-13 21:59:31,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740218813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:31,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:31,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524505433] [2022-07-13 21:59:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:31,068 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-07-13 21:59:31,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 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) [2022-07-13 21:59:31,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:31,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-07-13 21:59:31,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:31,200 INFO L129 PetriNetUnfolder]: 9/473 cut-off events. [2022-07-13 21:59:31,200 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-13 21:59:31,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 473 events. 9/473 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1491 event pairs, 0 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 604. Up to 58 conditions per place. [2022-07-13 21:59:31,202 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 29 selfloop transitions, 15 changer transitions 2/183 dead transitions. [2022-07-13 21:59:31,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 183 transitions, 533 flow [2022-07-13 21:59:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:59:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:59:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1495 transitions. [2022-07-13 21:59:31,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8169398907103825 [2022-07-13 21:59:31,206 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1495 transitions. [2022-07-13 21:59:31,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1495 transitions. [2022-07-13 21:59:31,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:31,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1495 transitions. [2022-07-13 21:59:31,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.5) internal successors, (1495), 10 states have internal predecessors, (1495), 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) [2022-07-13 21:59:31,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-13 21:59:31,214 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-13 21:59:31,214 INFO L186 Difference]: Start difference. First operand has 183 places, 174 transitions, 427 flow. Second operand 10 states and 1495 transitions. [2022-07-13 21:59:31,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 183 transitions, 533 flow [2022-07-13 21:59:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 183 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:59:31,219 INFO L242 Difference]: Finished difference. Result has 192 places, 174 transitions, 468 flow [2022-07-13 21:59:31,219 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=468, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-07-13 21:59:31,220 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 15 predicate places. [2022-07-13 21:59:31,220 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 468 flow [2022-07-13 21:59:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 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) [2022-07-13 21:59:31,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:31,221 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:59:31,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 280756634, now seen corresponding path program 1 times [2022-07-13 21:59:31,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:31,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7556412] [2022-07-13 21:59:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:31,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:31,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7556412] [2022-07-13 21:59:31,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7556412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:31,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:31,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:59:31,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794256625] [2022-07-13 21:59:31,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:31,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:59:31,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:59:31,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:59:31,397 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 183 [2022-07-13 21:59:31,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 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) [2022-07-13 21:59:31,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:31,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 183 [2022-07-13 21:59:31,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:31,876 INFO L129 PetriNetUnfolder]: 42/496 cut-off events. [2022-07-13 21:59:31,877 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-07-13 21:59:31,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 496 events. 42/496 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1762 event pairs, 0 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 739. Up to 38 conditions per place. [2022-07-13 21:59:31,879 INFO L132 encePairwiseOnDemand]: 164/183 looper letters, 70 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2022-07-13 21:59:31,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 782 flow [2022-07-13 21:59:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:59:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 21:59:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2306 transitions. [2022-07-13 21:59:31,884 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7412407585985213 [2022-07-13 21:59:31,885 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2306 transitions. [2022-07-13 21:59:31,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2306 transitions. [2022-07-13 21:59:31,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:31,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2306 transitions. [2022-07-13 21:59:31,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 135.64705882352942) internal successors, (2306), 17 states have internal predecessors, (2306), 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) [2022-07-13 21:59:31,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 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) [2022-07-13 21:59:31,896 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 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) [2022-07-13 21:59:31,896 INFO L186 Difference]: Start difference. First operand has 192 places, 174 transitions, 468 flow. Second operand 17 states and 2306 transitions. [2022-07-13 21:59:31,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 218 transitions, 782 flow [2022-07-13 21:59:31,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 218 transitions, 757 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-13 21:59:31,903 INFO L242 Difference]: Finished difference. Result has 207 places, 183 transitions, 576 flow [2022-07-13 21:59:31,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=576, PETRI_PLACES=207, PETRI_TRANSITIONS=183} [2022-07-13 21:59:31,904 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 30 predicate places. [2022-07-13 21:59:31,904 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 183 transitions, 576 flow [2022-07-13 21:59:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 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) [2022-07-13 21:59:31,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:31,905 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:31,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:59:31,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:31,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:31,906 INFO L85 PathProgramCache]: Analyzing trace with hash 985129269, now seen corresponding path program 1 times [2022-07-13 21:59:31,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:31,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869264836] [2022-07-13 21:59:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:31,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:31,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:31,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869264836] [2022-07-13 21:59:31,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869264836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:31,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:31,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:31,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324572490] [2022-07-13 21:59:31,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:31,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:31,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:31,994 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-07-13 21:59:31,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 183 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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) [2022-07-13 21:59:31,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:31,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-07-13 21:59:31,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:32,179 INFO L129 PetriNetUnfolder]: 12/462 cut-off events. [2022-07-13 21:59:32,180 INFO L130 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-07-13 21:59:32,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 462 events. 12/462 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1437 event pairs, 0 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 699. Up to 32 conditions per place. [2022-07-13 21:59:32,182 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 48 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2022-07-13 21:59:32,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 198 transitions, 740 flow [2022-07-13 21:59:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:59:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:59:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1607 transitions. [2022-07-13 21:59:32,187 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7983109786388475 [2022-07-13 21:59:32,187 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1607 transitions. [2022-07-13 21:59:32,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1607 transitions. [2022-07-13 21:59:32,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:32,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1607 transitions. [2022-07-13 21:59:32,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.0909090909091) internal successors, (1607), 11 states have internal predecessors, (1607), 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) [2022-07-13 21:59:32,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-13 21:59:32,195 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-13 21:59:32,195 INFO L186 Difference]: Start difference. First operand has 207 places, 183 transitions, 576 flow. Second operand 11 states and 1607 transitions. [2022-07-13 21:59:32,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 198 transitions, 740 flow [2022-07-13 21:59:32,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 714 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-07-13 21:59:32,202 INFO L242 Difference]: Finished difference. Result has 207 places, 181 transitions, 578 flow [2022-07-13 21:59:32,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=578, PETRI_PLACES=207, PETRI_TRANSITIONS=181} [2022-07-13 21:59:32,204 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 30 predicate places. [2022-07-13 21:59:32,204 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 181 transitions, 578 flow [2022-07-13 21:59:32,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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) [2022-07-13 21:59:32,205 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:32,205 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:32,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:59:32,206 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash -590826818, now seen corresponding path program 1 times [2022-07-13 21:59:32,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:32,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452921314] [2022-07-13 21:59:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:32,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:32,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452921314] [2022-07-13 21:59:32,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452921314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:32,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:32,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 21:59:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031649988] [2022-07-13 21:59:32,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:32,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 21:59:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:32,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 21:59:32,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:59:32,376 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 183 [2022-07-13 21:59:32,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 181 transitions, 578 flow. Second operand has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 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) [2022-07-13 21:59:32,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:32,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 183 [2022-07-13 21:59:32,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:32,707 INFO L129 PetriNetUnfolder]: 36/545 cut-off events. [2022-07-13 21:59:32,707 INFO L130 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-07-13 21:59:32,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 545 events. 36/545 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2004 event pairs, 13 based on Foata normal form. 1/537 useless extension candidates. Maximal degree in co-relation 906. Up to 85 conditions per place. [2022-07-13 21:59:32,710 INFO L132 encePairwiseOnDemand]: 165/183 looper letters, 38 selfloop transitions, 10 changer transitions 26/200 dead transitions. [2022-07-13 21:59:32,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 200 transitions, 762 flow [2022-07-13 21:59:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:59:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:59:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2210 transitions. [2022-07-13 21:59:32,715 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7547814207650273 [2022-07-13 21:59:32,715 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2210 transitions. [2022-07-13 21:59:32,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2210 transitions. [2022-07-13 21:59:32,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:32,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2210 transitions. [2022-07-13 21:59:32,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.125) internal successors, (2210), 16 states have internal predecessors, (2210), 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) [2022-07-13 21:59:32,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-13 21:59:32,726 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-13 21:59:32,726 INFO L186 Difference]: Start difference. First operand has 207 places, 181 transitions, 578 flow. Second operand 16 states and 2210 transitions. [2022-07-13 21:59:32,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 200 transitions, 762 flow [2022-07-13 21:59:32,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 200 transitions, 704 flow, removed 9 selfloop flow, removed 11 redundant places. [2022-07-13 21:59:32,732 INFO L242 Difference]: Finished difference. Result has 221 places, 170 transitions, 497 flow [2022-07-13 21:59:32,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=497, PETRI_PLACES=221, PETRI_TRANSITIONS=170} [2022-07-13 21:59:32,733 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 44 predicate places. [2022-07-13 21:59:32,733 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 170 transitions, 497 flow [2022-07-13 21:59:32,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 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) [2022-07-13 21:59:32,734 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:32,734 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:32,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:59:32,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:32,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1215757412, now seen corresponding path program 1 times [2022-07-13 21:59:32,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:32,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709891817] [2022-07-13 21:59:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:32,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709891817] [2022-07-13 21:59:32,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709891817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:32,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:32,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798821406] [2022-07-13 21:59:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:32,898 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-07-13 21:59:32,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 170 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 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) [2022-07-13 21:59:32,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:32,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-07-13 21:59:32,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:33,026 INFO L129 PetriNetUnfolder]: 15/339 cut-off events. [2022-07-13 21:59:33,027 INFO L130 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-07-13 21:59:33,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 339 events. 15/339 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 794 event pairs, 7 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 559. Up to 30 conditions per place. [2022-07-13 21:59:33,028 INFO L132 encePairwiseOnDemand]: 176/183 looper letters, 29 selfloop transitions, 7 changer transitions 5/170 dead transitions. [2022-07-13 21:59:33,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 170 transitions, 547 flow [2022-07-13 21:59:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:59:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:59:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2022-07-13 21:59:33,031 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7978142076502732 [2022-07-13 21:59:33,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2022-07-13 21:59:33,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2022-07-13 21:59:33,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:33,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2022-07-13 21:59:33,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2022-07-13 21:59:33,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-07-13 21:59:33,036 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-07-13 21:59:33,036 INFO L186 Difference]: Start difference. First operand has 221 places, 170 transitions, 497 flow. Second operand 6 states and 876 transitions. [2022-07-13 21:59:33,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 170 transitions, 547 flow [2022-07-13 21:59:33,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 170 transitions, 477 flow, removed 14 selfloop flow, removed 22 redundant places. [2022-07-13 21:59:33,040 INFO L242 Difference]: Finished difference. Result has 182 places, 161 transitions, 386 flow [2022-07-13 21:59:33,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=182, PETRI_TRANSITIONS=161} [2022-07-13 21:59:33,041 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 5 predicate places. [2022-07-13 21:59:33,041 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 161 transitions, 386 flow [2022-07-13 21:59:33,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 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) [2022-07-13 21:59:33,042 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:33,042 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:33,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:59:33,042 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:33,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash -645913404, now seen corresponding path program 1 times [2022-07-13 21:59:33,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:33,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946987669] [2022-07-13 21:59:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:33,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946987669] [2022-07-13 21:59:33,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946987669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:33,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:33,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:33,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578724228] [2022-07-13 21:59:33,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:33,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:33,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:33,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:33,168 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-07-13 21:59:33,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 161 transitions, 386 flow. Second operand has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 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) [2022-07-13 21:59:33,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:33,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-07-13 21:59:33,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:33,318 INFO L129 PetriNetUnfolder]: 12/360 cut-off events. [2022-07-13 21:59:33,318 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-07-13 21:59:33,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 360 events. 12/360 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 844 event pairs, 0 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 456. Up to 21 conditions per place. [2022-07-13 21:59:33,320 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 24 selfloop transitions, 10 changer transitions 0/165 dead transitions. [2022-07-13 21:59:33,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 165 transitions, 462 flow [2022-07-13 21:59:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:59:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:59:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1295 transitions. [2022-07-13 21:59:33,323 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7862780813600486 [2022-07-13 21:59:33,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1295 transitions. [2022-07-13 21:59:33,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1295 transitions. [2022-07-13 21:59:33,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:33,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1295 transitions. [2022-07-13 21:59:33,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 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) [2022-07-13 21:59:33,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 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) [2022-07-13 21:59:33,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 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) [2022-07-13 21:59:33,329 INFO L186 Difference]: Start difference. First operand has 182 places, 161 transitions, 386 flow. Second operand 9 states and 1295 transitions. [2022-07-13 21:59:33,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 165 transitions, 462 flow [2022-07-13 21:59:33,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 428 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-07-13 21:59:33,333 INFO L242 Difference]: Finished difference. Result has 174 places, 159 transitions, 368 flow [2022-07-13 21:59:33,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=174, PETRI_TRANSITIONS=159} [2022-07-13 21:59:33,334 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, -3 predicate places. [2022-07-13 21:59:33,334 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 159 transitions, 368 flow [2022-07-13 21:59:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 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) [2022-07-13 21:59:33,334 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:33,335 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:33,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:59:33,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash 998994782, now seen corresponding path program 1 times [2022-07-13 21:59:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:33,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602144984] [2022-07-13 21:59:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:33,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602144984] [2022-07-13 21:59:33,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602144984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:33,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:33,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 21:59:33,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278328202] [2022-07-13 21:59:33,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:33,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 21:59:33,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 21:59:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:59:33,437 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 183 [2022-07-13 21:59:33,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 159 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 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) [2022-07-13 21:59:33,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:33,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 183 [2022-07-13 21:59:33,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:33,726 INFO L129 PetriNetUnfolder]: 29/341 cut-off events. [2022-07-13 21:59:33,727 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-13 21:59:33,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 341 events. 29/341 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 854 event pairs, 12 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 475. Up to 44 conditions per place. [2022-07-13 21:59:33,728 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 21 selfloop transitions, 14 changer transitions 20/178 dead transitions. [2022-07-13 21:59:33,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 178 transitions, 518 flow [2022-07-13 21:59:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:59:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-13 21:59:33,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2366 transitions. [2022-07-13 21:59:33,733 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605271616843459 [2022-07-13 21:59:33,733 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2366 transitions. [2022-07-13 21:59:33,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2366 transitions. [2022-07-13 21:59:33,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:33,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2366 transitions. [2022-07-13 21:59:33,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 139.1764705882353) internal successors, (2366), 17 states have internal predecessors, (2366), 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) [2022-07-13 21:59:33,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 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) [2022-07-13 21:59:33,744 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 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) [2022-07-13 21:59:33,744 INFO L186 Difference]: Start difference. First operand has 174 places, 159 transitions, 368 flow. Second operand 17 states and 2366 transitions. [2022-07-13 21:59:33,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 178 transitions, 518 flow [2022-07-13 21:59:33,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 178 transitions, 490 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-13 21:59:33,748 INFO L242 Difference]: Finished difference. Result has 189 places, 158 transitions, 388 flow [2022-07-13 21:59:33,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=388, PETRI_PLACES=189, PETRI_TRANSITIONS=158} [2022-07-13 21:59:33,749 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, 12 predicate places. [2022-07-13 21:59:33,749 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 158 transitions, 388 flow [2022-07-13 21:59:33,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 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) [2022-07-13 21:59:33,749 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:33,750 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:33,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:59:33,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 21:59:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411450, now seen corresponding path program 1 times [2022-07-13 21:59:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:33,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721329712] [2022-07-13 21:59:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:59:33,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:33,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721329712] [2022-07-13 21:59:33,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721329712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:33,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:33,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936675564] [2022-07-13 21:59:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:33,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:33,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-07-13 21:59:33,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 158 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 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) [2022-07-13 21:59:33,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:33,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-07-13 21:59:33,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:34,003 INFO L129 PetriNetUnfolder]: 8/177 cut-off events. [2022-07-13 21:59:34,004 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-07-13 21:59:34,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 177 events. 8/177 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 5/180 useless extension candidates. Maximal degree in co-relation 262. Up to 23 conditions per place. [2022-07-13 21:59:34,005 INFO L132 encePairwiseOnDemand]: 178/183 looper letters, 0 selfloop transitions, 0 changer transitions 147/147 dead transitions. [2022-07-13 21:59:34,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 147 transitions, 426 flow [2022-07-13 21:59:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:59:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:59:34,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2022-07-13 21:59:34,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7996357012750456 [2022-07-13 21:59:34,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2022-07-13 21:59:34,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2022-07-13 21:59:34,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:34,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2022-07-13 21:59:34,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 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) [2022-07-13 21:59:34,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-07-13 21:59:34,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2022-07-13 21:59:34,010 INFO L186 Difference]: Start difference. First operand has 189 places, 158 transitions, 388 flow. Second operand 6 states and 878 transitions. [2022-07-13 21:59:34,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 147 transitions, 426 flow [2022-07-13 21:59:34,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 147 transitions, 388 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-13 21:59:34,012 INFO L242 Difference]: Finished difference. Result has 159 places, 0 transitions, 0 flow [2022-07-13 21:59:34,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=159, PETRI_TRANSITIONS=0} [2022-07-13 21:59:34,013 INFO L279 CegarLoopForPetriNet]: 177 programPoint places, -18 predicate places. [2022-07-13 21:59:34,013 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 0 transitions, 0 flow [2022-07-13 21:59:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 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) [2022-07-13 21:59:34,016 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-13 21:59:34,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-13 21:59:34,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-13 21:59:34,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-13 21:59:34,017 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-13 21:59:34,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-13 21:59:34,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-13 21:59:34,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:59:34,018 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:59:34,022 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:59:34,022 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:59:34,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:59:34 BasicIcfg [2022-07-13 21:59:34,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:59:34,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:59:34,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:59:34,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:59:34,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:59:29" (3/4) ... [2022-07-13 21:59:34,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:59:34,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-13 21:59:34,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-13 21:59:34,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 21:59:34,037 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:59:34,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:59:34,063 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:59:34,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:59:34,064 INFO L158 Benchmark]: Toolchain (without parser) took 6025.21ms. Allocated memory was 94.4MB in the beginning and 155.2MB in the end (delta: 60.8MB). Free memory was 65.8MB in the beginning and 115.7MB in the end (delta: -49.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,064 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:59:34,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.77ms. Allocated memory is still 94.4MB. Free memory was 65.6MB in the beginning and 57.8MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.00ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 55.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,065 INFO L158 Benchmark]: Boogie Preprocessor took 48.12ms. Allocated memory is still 94.4MB. Free memory was 55.4MB in the beginning and 53.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,065 INFO L158 Benchmark]: RCFGBuilder took 514.49ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 53.8MB in the beginning and 100.0MB in the end (delta: -46.2MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,066 INFO L158 Benchmark]: TraceAbstraction took 4811.69ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 99.4MB in the beginning and 118.9MB in the end (delta: -19.5MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,066 INFO L158 Benchmark]: Witness Printer took 36.79ms. Allocated memory is still 155.2MB. Free memory was 118.9MB in the beginning and 115.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:59:34,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 94.4MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.77ms. Allocated memory is still 94.4MB. Free memory was 65.6MB in the beginning and 57.8MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.00ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 55.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.12ms. Allocated memory is still 94.4MB. Free memory was 55.4MB in the beginning and 53.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.49ms. Allocated memory was 94.4MB in the beginning and 127.9MB in the end (delta: 33.6MB). Free memory was 53.8MB in the beginning and 100.0MB in the end (delta: -46.2MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4811.69ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 99.4MB in the beginning and 118.9MB in the end (delta: -19.5MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. * Witness Printer took 36.79ms. Allocated memory is still 155.2MB. Free memory was 118.9MB in the beginning and 115.7MB 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: - 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, 255 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: 4.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 925 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 925 mSDsluCounter, 1406 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1181 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1112 IncrementalHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 242 mSDtfsCounter, 1112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=5, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1052 NumberOfCodeBlocks, 1052 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1042 ConstructedInterpolants, 0 QuantifiedInterpolants, 4802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:59:34,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE