./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.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_21-traces-cluster-based_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:59:25,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:59:25,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:59:25,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:59:25,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:59:25,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:59:25,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:59:25,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:59:25,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:59:25,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:59:25,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:59:25,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:59:25,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:59:25,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:59:25,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:59:25,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:59:25,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:59:25,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:59:25,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:59:25,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:59:25,854 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:59:25,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:59:25,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:59:25,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:59:25,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:59:25,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:59:25,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:59:25,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:59:25,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:59:25,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:59:25,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:59:25,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:59:25,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:59:25,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:59:25,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:59:25,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:59:25,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:59:25,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:59:25,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:59:25,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:59:25,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:59:25,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:59:25,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:59:25,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:59:25,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:59:25,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:59:25,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:59:25,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:59:25,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:59:25,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:59:25,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:59:25,898 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:59:25,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:59:25,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:59:25,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:59:25,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:59:25,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:59:25,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:59:25,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:59:25,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:59:25,900 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:59:25,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:59:25,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:59:25,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:59:25,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:59:25,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:59:25,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:59:25,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:59:25,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:59:25,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:59:25,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:59:25,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:59:25,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:59:25,903 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:59:25,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:59:25,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:59:25,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2022-07-13 21:59:26,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:59:26,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:59:26,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:59:26,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:59:26,157 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:59:26,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-07-13 21:59:26,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11dd15d7/2dae153f40d3460f9eb38199480beeb2/FLAGd1d756deb [2022-07-13 21:59:26,651 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:59:26,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2022-07-13 21:59:26,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11dd15d7/2dae153f40d3460f9eb38199480beeb2/FLAGd1d756deb [2022-07-13 21:59:26,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11dd15d7/2dae153f40d3460f9eb38199480beeb2 [2022-07-13 21:59:26,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:59:26,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:59:26,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:59:26,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:59:26,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:59:26,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:59:26" (1/1) ... [2022-07-13 21:59:26,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53544fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:26, skipping insertion in model container [2022-07-13 21:59:26,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:59:26" (1/1) ... [2022-07-13 21:59:26,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:59:26,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:59:26,899 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_21-traces-cluster-based_true.i[1092,1105] [2022-07-13 21:59:27,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:59:27,043 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:59:27,054 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_21-traces-cluster-based_true.i[1092,1105] [2022-07-13 21:59:27,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:59:27,118 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:59:27,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27 WrapperNode [2022-07-13 21:59:27,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:59:27,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:59:27,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:59:27,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:59:27,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,173 INFO L137 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-07-13 21:59:27,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:59:27,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:59:27,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:59:27,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:59:27,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:59:27,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:59:27,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:59:27,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:59:27,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (1/1) ... [2022-07-13 21:59:27,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:59:27,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:59:27,242 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 21:59:27,248 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 21:59:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-13 21:59:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-13 21:59:27,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:59:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:59:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:59:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:59:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-07-13 21:59:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-07-13 21:59:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 21:59:27,275 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 21:59:27,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:59:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:59:27,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:59:27,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:59:27,277 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 21:59:27,394 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:59:27,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:59:27,583 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:59:27,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:59:27,590 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:59:27,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:59:27 BoogieIcfgContainer [2022-07-13 21:59:27,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:59:27,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:59:27,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:59:27,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:59:27,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:59:26" (1/3) ... [2022-07-13 21:59:27,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a97db83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:59:27, skipping insertion in model container [2022-07-13 21:59:27,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:59:27" (2/3) ... [2022-07-13 21:59:27,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a97db83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:59:27, skipping insertion in model container [2022-07-13 21:59:27,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:59:27" (3/3) ... [2022-07-13 21:59:27,597 INFO L111 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2022-07-13 21:59:27,600 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:59:27,606 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:59:27,607 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 21:59:27,607 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:59:27,664 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:59:27,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 172 places, 167 transitions, 349 flow [2022-07-13 21:59:27,780 INFO L129 PetriNetUnfolder]: 5/164 cut-off events. [2022-07-13 21:59:27,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:59:27,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 5/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 252 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2022-07-13 21:59:27,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 167 transitions, 349 flow [2022-07-13 21:59:27,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 164 transitions, 337 flow [2022-07-13 21:59:27,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:59:27,812 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@41186bd4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@77f30bb7 [2022-07-13 21:59:27,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-13 21:59:27,849 INFO L129 PetriNetUnfolder]: 2/117 cut-off events. [2022-07-13 21:59:27,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:59:27,849 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:27,850 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] [2022-07-13 21:59:27,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1404558984, now seen corresponding path program 1 times [2022-07-13 21:59:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:27,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774622682] [2022-07-13 21:59:27,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:27,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:28,189 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 21:59:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:28,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774622682] [2022-07-13 21:59:28,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774622682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:28,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:28,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:28,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339911764] [2022-07-13 21:59:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:28,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:28,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:28,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-07-13 21:59:28,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 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 21:59:28,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:28,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-07-13 21:59:28,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:28,952 INFO L129 PetriNetUnfolder]: 1049/3556 cut-off events. [2022-07-13 21:59:28,953 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-07-13 21:59:28,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 3556 events. 1049/3556 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 33641 event pairs, 294 based on Foata normal form. 502/3885 useless extension candidates. Maximal degree in co-relation 5235. Up to 818 conditions per place. [2022-07-13 21:59:29,011 INFO L132 encePairwiseOnDemand]: 153/167 looper letters, 96 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2022-07-13 21:59:29,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 252 transitions, 789 flow [2022-07-13 21:59:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:59:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:59:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2371 transitions. [2022-07-13 21:59:29,028 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8873502994011976 [2022-07-13 21:59:29,029 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2371 transitions. [2022-07-13 21:59:29,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2371 transitions. [2022-07-13 21:59:29,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:29,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2371 transitions. [2022-07-13 21:59:29,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 148.1875) internal successors, (2371), 16 states have internal predecessors, (2371), 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 21:59:29,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 21:59:29,053 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 21:59:29,055 INFO L186 Difference]: Start difference. First operand has 169 places, 164 transitions, 337 flow. Second operand 16 states and 2371 transitions. [2022-07-13 21:59:29,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 252 transitions, 789 flow [2022-07-13 21:59:29,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 252 transitions, 772 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:59:29,064 INFO L242 Difference]: Finished difference. Result has 182 places, 175 transitions, 432 flow [2022-07-13 21:59:29,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=432, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2022-07-13 21:59:29,068 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 13 predicate places. [2022-07-13 21:59:29,068 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 432 flow [2022-07-13 21:59:29,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.5) internal successors, (1116), 8 states have internal predecessors, (1116), 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 21:59:29,070 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:29,070 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] [2022-07-13 21:59:29,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:59:29,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1253064817, now seen corresponding path program 1 times [2022-07-13 21:59:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529955047] [2022-07-13 21:59:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:29,261 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 21:59:29,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529955047] [2022-07-13 21:59:29,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529955047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:29,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:29,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:29,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900532884] [2022-07-13 21:59:29,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:29,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:29,270 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2022-07-13 21:59:29,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 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 21:59:29,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:29,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2022-07-13 21:59:29,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:30,361 INFO L129 PetriNetUnfolder]: 2875/8300 cut-off events. [2022-07-13 21:59:30,361 INFO L130 PetriNetUnfolder]: For 1788/1788 co-relation queries the response was YES. [2022-07-13 21:59:30,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14921 conditions, 8300 events. 2875/8300 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 88077 event pairs, 569 based on Foata normal form. 0/7965 useless extension candidates. Maximal degree in co-relation 14862. Up to 1817 conditions per place. [2022-07-13 21:59:30,469 INFO L132 encePairwiseOnDemand]: 153/167 looper letters, 108 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2022-07-13 21:59:30,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 313 transitions, 1259 flow [2022-07-13 21:59:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:59:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:59:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2239 transitions. [2022-07-13 21:59:30,473 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8379491017964071 [2022-07-13 21:59:30,473 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2239 transitions. [2022-07-13 21:59:30,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2239 transitions. [2022-07-13 21:59:30,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:30,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2239 transitions. [2022-07-13 21:59:30,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.9375) internal successors, (2239), 16 states have internal predecessors, (2239), 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 21:59:30,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 21:59:30,484 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 21:59:30,484 INFO L186 Difference]: Start difference. First operand has 182 places, 175 transitions, 432 flow. Second operand 16 states and 2239 transitions. [2022-07-13 21:59:30,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 313 transitions, 1259 flow [2022-07-13 21:59:30,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 313 transitions, 1257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:59:30,503 INFO L242 Difference]: Finished difference. Result has 201 places, 242 transitions, 936 flow [2022-07-13 21:59:30,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=936, PETRI_PLACES=201, PETRI_TRANSITIONS=242} [2022-07-13 21:59:30,505 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 32 predicate places. [2022-07-13 21:59:30,505 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 242 transitions, 936 flow [2022-07-13 21:59:30,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 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 21:59:30,505 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:30,506 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] [2022-07-13 21:59:30,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:59:30,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1700488748, now seen corresponding path program 1 times [2022-07-13 21:59:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:30,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515315559] [2022-07-13 21:59:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:30,662 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 21:59:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:30,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515315559] [2022-07-13 21:59:30,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515315559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:30,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:30,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:30,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330335224] [2022-07-13 21:59:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:30,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:30,666 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 167 [2022-07-13 21:59:30,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 242 transitions, 936 flow. Second operand has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 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 21:59:30,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:30,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 167 [2022-07-13 21:59:30,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:33,005 INFO L129 PetriNetUnfolder]: 5834/22499 cut-off events. [2022-07-13 21:59:33,006 INFO L130 PetriNetUnfolder]: For 13189/13404 co-relation queries the response was YES. [2022-07-13 21:59:33,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43949 conditions, 22499 events. 5834/22499 cut-off events. For 13189/13404 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 306964 event pairs, 1723 based on Foata normal form. 0/21197 useless extension candidates. Maximal degree in co-relation 43886. Up to 4887 conditions per place. [2022-07-13 21:59:33,251 INFO L132 encePairwiseOnDemand]: 157/167 looper letters, 166 selfloop transitions, 227 changer transitions 54/603 dead transitions. [2022-07-13 21:59:33,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 603 transitions, 4140 flow [2022-07-13 21:59:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:59:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 21:59:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2316 transitions. [2022-07-13 21:59:33,255 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8667664670658682 [2022-07-13 21:59:33,255 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2316 transitions. [2022-07-13 21:59:33,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2316 transitions. [2022-07-13 21:59:33,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:33,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2316 transitions. [2022-07-13 21:59:33,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 144.75) internal successors, (2316), 16 states have internal predecessors, (2316), 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 21:59:33,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 21:59:33,263 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 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 21:59:33,264 INFO L186 Difference]: Start difference. First operand has 201 places, 242 transitions, 936 flow. Second operand 16 states and 2316 transitions. [2022-07-13 21:59:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 603 transitions, 4140 flow [2022-07-13 21:59:33,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 603 transitions, 4138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:59:33,528 INFO L242 Difference]: Finished difference. Result has 223 places, 469 transitions, 3493 flow [2022-07-13 21:59:33,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3493, PETRI_PLACES=223, PETRI_TRANSITIONS=469} [2022-07-13 21:59:33,530 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 54 predicate places. [2022-07-13 21:59:33,530 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 469 transitions, 3493 flow [2022-07-13 21:59:33,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 139.625) internal successors, (1117), 8 states have internal predecessors, (1117), 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 21:59:33,530 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:33,531 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] [2022-07-13 21:59:33,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:59:33,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash -685021039, now seen corresponding path program 1 times [2022-07-13 21:59:33,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:33,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417623617] [2022-07-13 21:59:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:33,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:33,578 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 21:59:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:33,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417623617] [2022-07-13 21:59:33,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417623617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:33,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:33,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:59:33,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298196408] [2022-07-13 21:59:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:33,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:59:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:59:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:59:33,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 167 [2022-07-13 21:59:33,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 469 transitions, 3493 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 21:59:33,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:33,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 167 [2022-07-13 21:59:33,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:36,247 INFO L129 PetriNetUnfolder]: 4456/24930 cut-off events. [2022-07-13 21:59:36,247 INFO L130 PetriNetUnfolder]: For 7906/7911 co-relation queries the response was YES. [2022-07-13 21:59:36,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44625 conditions, 24930 events. 4456/24930 cut-off events. For 7906/7911 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 367217 event pairs, 1362 based on Foata normal form. 700/25215 useless extension candidates. Maximal degree in co-relation 44548. Up to 5167 conditions per place. [2022-07-13 21:59:36,537 INFO L132 encePairwiseOnDemand]: 154/167 looper letters, 25 selfloop transitions, 13 changer transitions 0/362 dead transitions. [2022-07-13 21:59:36,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 362 transitions, 2389 flow [2022-07-13 21:59:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:59:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:59:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-07-13 21:59:36,539 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8882235528942116 [2022-07-13 21:59:36,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-07-13 21:59:36,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-07-13 21:59:36,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:36,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-07-13 21:59:36,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 21:59:36,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 21:59:36,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 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 21:59:36,541 INFO L186 Difference]: Start difference. First operand has 223 places, 469 transitions, 3493 flow. Second operand 3 states and 445 transitions. [2022-07-13 21:59:36,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 362 transitions, 2389 flow [2022-07-13 21:59:37,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 362 transitions, 2387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:59:37,018 INFO L242 Difference]: Finished difference. Result has 225 places, 357 transitions, 2352 flow [2022-07-13 21:59:37,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2352, PETRI_PLACES=225, PETRI_TRANSITIONS=357} [2022-07-13 21:59:37,019 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 56 predicate places. [2022-07-13 21:59:37,019 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 357 transitions, 2352 flow [2022-07-13 21:59:37,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 21:59:37,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:37,020 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] [2022-07-13 21:59:37,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:59:37,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:37,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1913673872, now seen corresponding path program 1 times [2022-07-13 21:59:37,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:37,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670235809] [2022-07-13 21:59:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:37,080 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 21:59:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:37,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670235809] [2022-07-13 21:59:37,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670235809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:37,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:37,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355362088] [2022-07-13 21:59:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:37,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:37,083 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-07-13 21:59:37,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 357 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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 21:59:37,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:37,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-07-13 21:59:37,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:43,060 INFO L129 PetriNetUnfolder]: 11813/53518 cut-off events. [2022-07-13 21:59:43,061 INFO L130 PetriNetUnfolder]: For 26435/27591 co-relation queries the response was YES. [2022-07-13 21:59:43,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109902 conditions, 53518 events. 11813/53518 cut-off events. For 26435/27591 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 839672 event pairs, 3257 based on Foata normal form. 442/52433 useless extension candidates. Maximal degree in co-relation 109828. Up to 8791 conditions per place. [2022-07-13 21:59:43,937 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 114 selfloop transitions, 200 changer transitions 0/475 dead transitions. [2022-07-13 21:59:43,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 475 transitions, 3645 flow [2022-07-13 21:59:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:59:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:59:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2014 transitions. [2022-07-13 21:59:43,945 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8614200171086399 [2022-07-13 21:59:43,945 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2014 transitions. [2022-07-13 21:59:43,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2014 transitions. [2022-07-13 21:59:43,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:43,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2014 transitions. [2022-07-13 21:59:43,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.85714285714286) internal successors, (2014), 14 states have internal predecessors, (2014), 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 21:59:43,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 21:59:43,956 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 21:59:43,956 INFO L186 Difference]: Start difference. First operand has 225 places, 357 transitions, 2352 flow. Second operand 14 states and 2014 transitions. [2022-07-13 21:59:43,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 475 transitions, 3645 flow [2022-07-13 21:59:44,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 475 transitions, 3632 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:59:44,917 INFO L242 Difference]: Finished difference. Result has 246 places, 397 transitions, 3370 flow [2022-07-13 21:59:44,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3370, PETRI_PLACES=246, PETRI_TRANSITIONS=397} [2022-07-13 21:59:44,918 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2022-07-13 21:59:44,918 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 397 transitions, 3370 flow [2022-07-13 21:59:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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 21:59:44,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:44,919 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] [2022-07-13 21:59:44,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:59:44,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1552092039, now seen corresponding path program 1 times [2022-07-13 21:59:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:44,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896666953] [2022-07-13 21:59:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:44,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:45,016 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 21:59:45,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:45,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896666953] [2022-07-13 21:59:45,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896666953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:45,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:45,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:59:45,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908219024] [2022-07-13 21:59:45,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:45,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:59:45,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:59:45,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:59:45,019 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2022-07-13 21:59:45,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 397 transitions, 3370 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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 21:59:45,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:45,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2022-07-13 21:59:45,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:46,655 INFO L129 PetriNetUnfolder]: 1834/12191 cut-off events. [2022-07-13 21:59:46,655 INFO L130 PetriNetUnfolder]: For 12085/12545 co-relation queries the response was YES. [2022-07-13 21:59:46,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28808 conditions, 12191 events. 1834/12191 cut-off events. For 12085/12545 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 162362 event pairs, 123 based on Foata normal form. 587/12709 useless extension candidates. Maximal degree in co-relation 28715. Up to 2024 conditions per place. [2022-07-13 21:59:46,746 INFO L132 encePairwiseOnDemand]: 159/167 looper letters, 36 selfloop transitions, 11 changer transitions 0/360 dead transitions. [2022-07-13 21:59:46,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 360 transitions, 2899 flow [2022-07-13 21:59:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:59:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 21:59:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2022-07-13 21:59:46,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8143712574850299 [2022-07-13 21:59:46,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2022-07-13 21:59:46,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2022-07-13 21:59:46,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:46,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2022-07-13 21:59:46,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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 21:59:46,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 21:59:46,751 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 21:59:46,751 INFO L186 Difference]: Start difference. First operand has 246 places, 397 transitions, 3370 flow. Second operand 5 states and 680 transitions. [2022-07-13 21:59:46,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 360 transitions, 2899 flow [2022-07-13 21:59:46,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 360 transitions, 2869 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-07-13 21:59:46,884 INFO L242 Difference]: Finished difference. Result has 248 places, 352 transitions, 2765 flow [2022-07-13 21:59:46,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2765, PETRI_PLACES=248, PETRI_TRANSITIONS=352} [2022-07-13 21:59:46,885 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 79 predicate places. [2022-07-13 21:59:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 352 transitions, 2765 flow [2022-07-13 21:59:46,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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 21:59:46,886 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:46,886 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] [2022-07-13 21:59:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:59:46,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:46,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1716014188, now seen corresponding path program 1 times [2022-07-13 21:59:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:46,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144482430] [2022-07-13 21:59:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:46,958 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 21:59:46,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:46,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144482430] [2022-07-13 21:59:46,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144482430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:46,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:46,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924727240] [2022-07-13 21:59:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:46,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:46,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:46,964 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-07-13 21:59:46,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 352 transitions, 2765 flow. Second operand has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 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 21:59:46,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:46,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-07-13 21:59:46,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:50,307 INFO L129 PetriNetUnfolder]: 5617/25679 cut-off events. [2022-07-13 21:59:50,308 INFO L130 PetriNetUnfolder]: For 28357/28973 co-relation queries the response was YES. [2022-07-13 21:59:50,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61076 conditions, 25679 events. 5617/25679 cut-off events. For 28357/28973 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 355357 event pairs, 1879 based on Foata normal form. 313/25298 useless extension candidates. Maximal degree in co-relation 60991. Up to 3253 conditions per place. [2022-07-13 21:59:50,620 INFO L132 encePairwiseOnDemand]: 158/167 looper letters, 109 selfloop transitions, 162 changer transitions 0/430 dead transitions. [2022-07-13 21:59:50,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 430 transitions, 3645 flow [2022-07-13 21:59:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:59:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:59:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2009 transitions. [2022-07-13 21:59:50,624 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8592814371257484 [2022-07-13 21:59:50,624 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2009 transitions. [2022-07-13 21:59:50,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2009 transitions. [2022-07-13 21:59:50,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:50,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2009 transitions. [2022-07-13 21:59:50,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.5) internal successors, (2009), 14 states have internal predecessors, (2009), 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 21:59:50,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 21:59:50,633 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 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 21:59:50,633 INFO L186 Difference]: Start difference. First operand has 248 places, 352 transitions, 2765 flow. Second operand 14 states and 2009 transitions. [2022-07-13 21:59:50,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 430 transitions, 3645 flow [2022-07-13 21:59:50,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 430 transitions, 3633 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:59:50,988 INFO L242 Difference]: Finished difference. Result has 263 places, 359 transitions, 3221 flow [2022-07-13 21:59:50,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3221, PETRI_PLACES=263, PETRI_TRANSITIONS=359} [2022-07-13 21:59:50,989 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 94 predicate places. [2022-07-13 21:59:50,989 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 359 transitions, 3221 flow [2022-07-13 21:59:50,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.125) internal successors, (1097), 8 states have internal predecessors, (1097), 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 21:59:50,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:50,990 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] [2022-07-13 21:59:50,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:59:50,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash -37311811, now seen corresponding path program 1 times [2022-07-13 21:59:50,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:50,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30603484] [2022-07-13 21:59:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:51,090 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 21:59:51,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:51,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30603484] [2022-07-13 21:59:51,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30603484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:51,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:51,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:51,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563790685] [2022-07-13 21:59:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:51,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:51,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:51,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:51,095 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 167 [2022-07-13 21:59:51,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 359 transitions, 3221 flow. Second operand has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 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 21:59:51,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:51,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 167 [2022-07-13 21:59:51,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:59:54,456 INFO L129 PetriNetUnfolder]: 5973/26715 cut-off events. [2022-07-13 21:59:54,457 INFO L130 PetriNetUnfolder]: For 40115/41521 co-relation queries the response was YES. [2022-07-13 21:59:54,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65779 conditions, 26715 events. 5973/26715 cut-off events. For 40115/41521 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 372297 event pairs, 1548 based on Foata normal form. 407/26253 useless extension candidates. Maximal degree in co-relation 65687. Up to 3440 conditions per place. [2022-07-13 21:59:54,764 INFO L132 encePairwiseOnDemand]: 155/167 looper letters, 185 selfloop transitions, 106 changer transitions 2/454 dead transitions. [2022-07-13 21:59:54,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 454 transitions, 4697 flow [2022-07-13 21:59:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:59:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:59:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1518 transitions. [2022-07-13 21:59:54,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8263473053892215 [2022-07-13 21:59:54,767 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1518 transitions. [2022-07-13 21:59:54,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1518 transitions. [2022-07-13 21:59:54,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:59:54,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1518 transitions. [2022-07-13 21:59:54,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 21:59:54,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 21:59:54,773 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 21:59:54,773 INFO L186 Difference]: Start difference. First operand has 263 places, 359 transitions, 3221 flow. Second operand 11 states and 1518 transitions. [2022-07-13 21:59:54,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 454 transitions, 4697 flow [2022-07-13 21:59:55,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 454 transitions, 4343 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-07-13 21:59:55,300 INFO L242 Difference]: Finished difference. Result has 271 places, 387 transitions, 3455 flow [2022-07-13 21:59:55,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3455, PETRI_PLACES=271, PETRI_TRANSITIONS=387} [2022-07-13 21:59:55,301 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 102 predicate places. [2022-07-13 21:59:55,301 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 387 transitions, 3455 flow [2022-07-13 21:59:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 131.375) internal successors, (1051), 8 states have internal predecessors, (1051), 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 21:59:55,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:59:55,302 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] [2022-07-13 21:59:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:59:55,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 21:59:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:59:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2087689726, now seen corresponding path program 1 times [2022-07-13 21:59:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:59:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788323824] [2022-07-13 21:59:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:59:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:59:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:59:55,376 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 21:59:55,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:59:55,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788323824] [2022-07-13 21:59:55,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788323824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:59:55,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:59:55,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:59:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852533637] [2022-07-13 21:59:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:59:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:59:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:59:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:59:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:59:55,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 167 [2022-07-13 21:59:55,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 387 transitions, 3455 flow. Second operand has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 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 21:59:55,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:59:55,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 167 [2022-07-13 21:59:55,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:00:00,058 INFO L129 PetriNetUnfolder]: 8102/34804 cut-off events. [2022-07-13 22:00:00,058 INFO L130 PetriNetUnfolder]: For 63523/65207 co-relation queries the response was YES. [2022-07-13 22:00:00,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89211 conditions, 34804 events. 8102/34804 cut-off events. For 63523/65207 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 497938 event pairs, 1783 based on Foata normal form. 368/34326 useless extension candidates. Maximal degree in co-relation 89118. Up to 4553 conditions per place. [2022-07-13 22:00:00,576 INFO L132 encePairwiseOnDemand]: 159/167 looper letters, 160 selfloop transitions, 107 changer transitions 42/490 dead transitions. [2022-07-13 22:00:00,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 490 transitions, 5091 flow [2022-07-13 22:00:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:00:00,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 22:00:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1573 transitions. [2022-07-13 22:00:00,579 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2022-07-13 22:00:00,579 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1573 transitions. [2022-07-13 22:00:00,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1573 transitions. [2022-07-13 22:00:00,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:00:00,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1573 transitions. [2022-07-13 22:00:00,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.0) internal successors, (1573), 11 states have internal predecessors, (1573), 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 22:00:00,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 22:00:00,585 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 167.0) internal successors, (2004), 12 states have internal predecessors, (2004), 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 22:00:00,585 INFO L186 Difference]: Start difference. First operand has 271 places, 387 transitions, 3455 flow. Second operand 11 states and 1573 transitions. [2022-07-13 22:00:00,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 490 transitions, 5091 flow [2022-07-13 22:00:01,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 490 transitions, 4988 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-07-13 22:00:01,596 INFO L242 Difference]: Finished difference. Result has 277 places, 386 transitions, 3495 flow [2022-07-13 22:00:01,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3495, PETRI_PLACES=277, PETRI_TRANSITIONS=386} [2022-07-13 22:00:01,597 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 108 predicate places. [2022-07-13 22:00:01,597 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 386 transitions, 3495 flow [2022-07-13 22:00:01,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.25) internal successors, (1098), 8 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 22:00:01,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:00:01,598 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] [2022-07-13 22:00:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:00:01,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-07-13 22:00:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:00:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1294409337, now seen corresponding path program 1 times [2022-07-13 22:00:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:00:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853397220] [2022-07-13 22:00:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:00:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:00:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:00:01,668 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 22:00:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:00:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853397220] [2022-07-13 22:00:01,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853397220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:00:01,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:00:01,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:00:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674330391] [2022-07-13 22:00:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:00:01,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:00:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:00:01,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:00:01,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:00:01,675 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2022-07-13 22:00:01,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 386 transitions, 3495 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 22:00:01,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:00:01,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2022-07-13 22:00:01,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:00:02,264 INFO L129 PetriNetUnfolder]: 354/4480 cut-off events. [2022-07-13 22:00:02,264 INFO L130 PetriNetUnfolder]: For 5290/5404 co-relation queries the response was YES. [2022-07-13 22:00:02,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10985 conditions, 4480 events. 354/4480 cut-off events. For 5290/5404 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 50838 event pairs, 43 based on Foata normal form. 41/4513 useless extension candidates. Maximal degree in co-relation 10883. Up to 609 conditions per place. [2022-07-13 22:00:02,300 INFO L132 encePairwiseOnDemand]: 155/167 looper letters, 0 selfloop transitions, 0 changer transitions 276/276 dead transitions. [2022-07-13 22:00:02,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 276 transitions, 2051 flow [2022-07-13 22:00:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:00:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 22:00:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2022-07-13 22:00:02,301 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8155688622754491 [2022-07-13 22:00:02,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2022-07-13 22:00:02,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2022-07-13 22:00:02,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:00:02,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2022-07-13 22:00:02,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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 22:00:02,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 22:00:02,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 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 22:00:02,304 INFO L186 Difference]: Start difference. First operand has 277 places, 386 transitions, 3495 flow. Second operand 5 states and 681 transitions. [2022-07-13 22:00:02,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 276 transitions, 2051 flow [2022-07-13 22:00:02,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 276 transitions, 1761 flow, removed 26 selfloop flow, removed 25 redundant places. [2022-07-13 22:00:02,336 INFO L242 Difference]: Finished difference. Result has 246 places, 0 transitions, 0 flow [2022-07-13 22:00:02,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=246, PETRI_TRANSITIONS=0} [2022-07-13 22:00:02,337 INFO L279 CegarLoopForPetriNet]: 169 programPoint places, 77 predicate places. [2022-07-13 22:00:02,337 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 0 transitions, 0 flow [2022-07-13 22:00:02,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 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 22:00:02,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2022-07-13 22:00:02,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-07-13 22:00:02,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-07-13 22:00:02,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-07-13 22:00:02,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2022-07-13 22:00:02,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2022-07-13 22:00:02,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2022-07-13 22:00:02,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-07-13 22:00:02,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-07-13 22:00:02,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:00:02,342 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:00:02,346 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 22:00:02,346 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:00:02,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:00:02 BasicIcfg [2022-07-13 22:00:02,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:00:02,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:00:02,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:00:02,350 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:00:02,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:59:27" (3/4) ... [2022-07-13 22:00:02,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:00:02,355 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2022-07-13 22:00:02,356 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2022-07-13 22:00:02,356 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-13 22:00:02,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-13 22:00:02,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 22:00:02,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:00:02,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:00:02,380 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:00:02,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:00:02,381 INFO L158 Benchmark]: Toolchain (without parser) took 35696.78ms. Allocated memory was 98.6MB in the beginning and 10.6GB in the end (delta: 10.5GB). Free memory was 59.5MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-07-13 22:00:02,381 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:00:02,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.12ms. Allocated memory is still 98.6MB. Free memory was 59.3MB in the beginning and 63.6MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 22:00:02,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.66ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 61.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:00:02,382 INFO L158 Benchmark]: Boogie Preprocessor took 40.25ms. Allocated memory is still 98.6MB. Free memory was 61.2MB in the beginning and 59.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:00:02,382 INFO L158 Benchmark]: RCFGBuilder took 373.27ms. Allocated memory is still 98.6MB. Free memory was 59.6MB in the beginning and 44.1MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-13 22:00:02,382 INFO L158 Benchmark]: TraceAbstraction took 34756.65ms. Allocated memory was 98.6MB in the beginning and 10.6GB in the end (delta: 10.5GB). Free memory was 43.6MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-07-13 22:00:02,382 INFO L158 Benchmark]: Witness Printer took 30.79ms. Allocated memory is still 10.6GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:00:02,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.12ms. Allocated memory is still 98.6MB. Free memory was 59.3MB in the beginning and 63.6MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.66ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 61.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.25ms. Allocated memory is still 98.6MB. Free memory was 61.2MB in the beginning and 59.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.27ms. Allocated memory is still 98.6MB. Free memory was 59.6MB in the beginning and 44.1MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 34756.65ms. Allocated memory was 98.6MB in the beginning and 10.6GB in the end (delta: 10.5GB). Free memory was 43.6MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 30.79ms. Allocated memory is still 10.6GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 237 locations, 9 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: 34.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 767 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 767 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1134 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1841 IncrementalHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 254 mSDtfsCounter, 1841 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3495occurred in iteration=9, InterpolantAutomatonStates: 111, 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, 0.8s InterpolantComputationTime, 789 NumberOfCodeBlocks, 789 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 779 ConstructedInterpolants, 0 QuantifiedInterpolants, 2536 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 22:00:02,408 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