./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55a25aaba499ad6f05f5b24cde70628308432569fd1f75e76cd806a685179688 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:58:19,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:58:19,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:58:19,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:58:19,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:58:19,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:58:19,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:58:19,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:58:19,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:58:19,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:58:19,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:58:19,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:58:19,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:58:19,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:58:19,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:58:19,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:58:19,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:58:19,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:58:19,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:58:19,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:58:19,853 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:58:19,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:58:19,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:58:19,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:58:19,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:58:19,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:58:19,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:58:19,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:58:19,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:58:19,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:58:19,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:58:19,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:58:19,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:58:19,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:58:19,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:58:19,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:58:19,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:58:19,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:58:19,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:58:19,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:58:19,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:58:19,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:58:19,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:58:19,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:58:19,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:58:19,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:58:19,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:58:19,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:58:19,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:58:19,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:58:19,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:58:19,897 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:58:19,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:58:19,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:58:19,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:58:19,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:58:19,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:58:19,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:58:19,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:58:19,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:58:19,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:58:19,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:58:19,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:58:19,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:58:19,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:58:19,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:58:19,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:58:19,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:58:19,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:58:19,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:58:19,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:58:19,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:58:19,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:58:19,902 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:58:19,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:58:19,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:58:19,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55a25aaba499ad6f05f5b24cde70628308432569fd1f75e76cd806a685179688 [2022-07-12 08:58:20,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:58:20,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:58:20,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:58:20,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:58:20,119 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:58:20,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c [2022-07-12 08:58:20,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104fff767/46bb6175cab143e78cfdfef83c057f0b/FLAG99b10895b [2022-07-12 08:58:20,659 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:58:20,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c [2022-07-12 08:58:20,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104fff767/46bb6175cab143e78cfdfef83c057f0b/FLAG99b10895b [2022-07-12 08:58:21,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104fff767/46bb6175cab143e78cfdfef83c057f0b [2022-07-12 08:58:21,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:58:21,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:58:21,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:58:21,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:58:21,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:58:21,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:58:21" (1/1) ... [2022-07-12 08:58:21,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbe355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:21, skipping insertion in model container [2022-07-12 08:58:21,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:58:21" (1/1) ... [2022-07-12 08:58:21,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:58:21,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:58:21,478 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/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[6391,6404] [2022-07-12 08:58:21,511 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/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[13327,13340] [2022-07-12 08:58:21,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:58:21,958 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:58:21,988 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/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[6391,6404] [2022-07-12 08:58:21,996 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/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[13327,13340] [2022-07-12 08:58:22,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:58:22,292 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:58:22,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22 WrapperNode [2022-07-12 08:58:22,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:58:22,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:58:22,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:58:22,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:58:22,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,551 INFO L137 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4977 [2022-07-12 08:58:22,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:58:22,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:58:22,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:58:22,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:58:22,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:58:22,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:58:22,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:58:22,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:58:22,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (1/1) ... [2022-07-12 08:58:22,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:58:22,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:58:22,856 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) [2022-07-12 08:58:22,862 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 [2022-07-12 08:58:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:58:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:58:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:58:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:58:22,991 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:58:22,992 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:58:25,807 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:58:25,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:58:25,817 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 08:58:25,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:58:25 BoogieIcfgContainer [2022-07-12 08:58:25,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:58:25,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:58:25,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:58:25,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:58:25,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:58:21" (1/3) ... [2022-07-12 08:58:25,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d649a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:58:25, skipping insertion in model container [2022-07-12 08:58:25,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:58:22" (2/3) ... [2022-07-12 08:58:25,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d649a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:58:25, skipping insertion in model container [2022-07-12 08:58:25,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:58:25" (3/3) ... [2022-07-12 08:58:25,825 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c [2022-07-12 08:58:25,835 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:58:25,835 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:58:25,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:58:25,912 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@5a39e831, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@397492d4 [2022-07-12 08:58:25,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:58:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 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) [2022-07-12 08:58:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 08:58:25,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:25,926 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:25,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2022-07-12 08:58:25,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:25,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792020921] [2022-07-12 08:58:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:25,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792020921] [2022-07-12 08:58:26,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792020921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 08:58:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590164273] [2022-07-12 08:58:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 08:58:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 08:58:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:58:26,100 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 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) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2022-07-12 08:58:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,154 INFO L93 Difference]: Finished difference Result 1734 states and 3292 transitions. [2022-07-12 08:58:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 08:58:26,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) Word has length 26 [2022-07-12 08:58:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,174 INFO L225 Difference]: With dead ends: 1734 [2022-07-12 08:58:26,176 INFO L226 Difference]: Without dead ends: 812 [2022-07-12 08:58:26,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 08:58:26,186 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-07-12 08:58:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-07-12 08:58:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 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) [2022-07-12 08:58:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-07-12 08:58:26,259 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-07-12 08:58:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:26,259 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-07-12 08:58:26,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2022-07-12 08:58:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-07-12 08:58:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 08:58:26,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:26,261 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:58:26,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-07-12 08:58:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:26,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194520060] [2022-07-12 08:58:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194520060] [2022-07-12 08:58:26,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194520060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:58:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885921261] [2022-07-12 08:58:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:58:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:58:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:26,342 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-07-12 08:58:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,406 INFO L93 Difference]: Finished difference Result 888 states and 1649 transitions. [2022-07-12 08:58:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:58:26,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) Word has length 26 [2022-07-12 08:58:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,409 INFO L225 Difference]: With dead ends: 888 [2022-07-12 08:58:26,410 INFO L226 Difference]: Without dead ends: 848 [2022-07-12 08:58:26,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:58:26,411 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 58 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6095 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-07-12 08:58:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2022-07-12 08:58:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 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) [2022-07-12 08:58:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-07-12 08:58:26,423 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-07-12 08:58:26,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:26,424 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-07-12 08:58:26,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2022-07-12 08:58:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-07-12 08:58:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 08:58:26,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:26,425 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:26,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:58:26,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-07-12 08:58:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:26,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568330788] [2022-07-12 08:58:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568330788] [2022-07-12 08:58:26,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568330788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273349571] [2022-07-12 08:58:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:58:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:58:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:26,480 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-07-12 08:58:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,500 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-07-12 08:58:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:58:26,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) Word has length 41 [2022-07-12 08:58:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,503 INFO L225 Difference]: With dead ends: 878 [2022-07-12 08:58:26,504 INFO L226 Difference]: Without dead ends: 842 [2022-07-12 08:58:26,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:26,505 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-12 08:58:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-07-12 08:58:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 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) [2022-07-12 08:58:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-07-12 08:58:26,518 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-07-12 08:58:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:26,519 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-07-12 08:58:26,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2022-07-12 08:58:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-07-12 08:58:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 08:58:26,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:26,520 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:26,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:58:26,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:26,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-07-12 08:58:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:26,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131027851] [2022-07-12 08:58:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:26,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131027851] [2022-07-12 08:58:26,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131027851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:58:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929473499] [2022-07-12 08:58:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:58:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:58:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:26,572 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-07-12 08:58:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,665 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2022-07-12 08:58:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:58:26,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) Word has length 41 [2022-07-12 08:58:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,670 INFO L225 Difference]: With dead ends: 1224 [2022-07-12 08:58:26,670 INFO L226 Difference]: Without dead ends: 1160 [2022-07-12 08:58:26,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:58:26,671 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-07-12 08:58:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2022-07-12 08:58:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 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) [2022-07-12 08:58:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2022-07-12 08:58:26,689 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2022-07-12 08:58:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:26,689 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2022-07-12 08:58:26,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2022-07-12 08:58:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2022-07-12 08:58:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 08:58:26,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:26,691 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:26,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:58:26,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:26,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-07-12 08:58:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:26,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734605837] [2022-07-12 08:58:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734605837] [2022-07-12 08:58:26,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734605837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:26,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084011593] [2022-07-12 08:58:26,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:58:26,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:58:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:26,722 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-07-12 08:58:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,746 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2022-07-12 08:58:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:58:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) Word has length 43 [2022-07-12 08:58:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,750 INFO L225 Difference]: With dead ends: 1089 [2022-07-12 08:58:26,751 INFO L226 Difference]: Without dead ends: 963 [2022-07-12 08:58:26,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:26,752 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-12 08:58:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-07-12 08:58:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 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) [2022-07-12 08:58:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2022-07-12 08:58:26,769 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2022-07-12 08:58:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:26,770 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2022-07-12 08:58:26,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-07-12 08:58:26,770 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2022-07-12 08:58:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 08:58:26,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:26,771 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:26,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:58:26,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-07-12 08:58:26,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:26,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128838887] [2022-07-12 08:58:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:26,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128838887] [2022-07-12 08:58:26,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128838887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:58:26,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266806788] [2022-07-12 08:58:26,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:58:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:58:26,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:26,841 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-07-12 08:58:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,912 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2022-07-12 08:58:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 08:58:26,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) Word has length 43 [2022-07-12 08:58:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,916 INFO L225 Difference]: With dead ends: 1146 [2022-07-12 08:58:26,916 INFO L226 Difference]: Without dead ends: 963 [2022-07-12 08:58:26,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:58:26,917 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 1528 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1685 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-12 08:58:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2022-07-12 08:58:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 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) [2022-07-12 08:58:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2022-07-12 08:58:26,935 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2022-07-12 08:58:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2022-07-12 08:58:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-07-12 08:58:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2022-07-12 08:58:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 08:58:26,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:26,937 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:58:26,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-07-12 08:58:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298278607] [2022-07-12 08:58:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:26,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:26,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298278607] [2022-07-12 08:58:26,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298278607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:26,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:26,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980060369] [2022-07-12 08:58:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:58:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:58:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:26,964 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-07-12 08:58:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:26,991 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2022-07-12 08:58:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:58:26,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) Word has length 43 [2022-07-12 08:58:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:26,996 INFO L225 Difference]: With dead ends: 1291 [2022-07-12 08:58:26,996 INFO L226 Difference]: Without dead ends: 1108 [2022-07-12 08:58:26,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:26,997 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:26,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:26,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-07-12 08:58:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2022-07-12 08:58:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 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) [2022-07-12 08:58:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2022-07-12 08:58:27,021 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2022-07-12 08:58:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:27,021 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2022-07-12 08:58:27,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-07-12 08:58:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2022-07-12 08:58:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 08:58:27,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:27,022 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:27,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:58:27,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:27,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-07-12 08:58:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:27,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338621046] [2022-07-12 08:58:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:27,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:27,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338621046] [2022-07-12 08:58:27,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338621046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:27,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:27,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194632318] [2022-07-12 08:58:27,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:58:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:58:27,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:27,046 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-07-12 08:58:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:27,086 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2022-07-12 08:58:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:58:27,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) Word has length 43 [2022-07-12 08:58:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:27,092 INFO L225 Difference]: With dead ends: 1690 [2022-07-12 08:58:27,092 INFO L226 Difference]: Without dead ends: 1362 [2022-07-12 08:58:27,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:27,094 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:27,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-12 08:58:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2022-07-12 08:58:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 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) [2022-07-12 08:58:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2022-07-12 08:58:27,135 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2022-07-12 08:58:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:27,136 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2022-07-12 08:58:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-07-12 08:58:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2022-07-12 08:58:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 08:58:27,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:27,137 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:27,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:58:27,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:27,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-07-12 08:58:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:27,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248230441] [2022-07-12 08:58:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:27,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:27,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248230441] [2022-07-12 08:58:27,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248230441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:27,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:27,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 08:58:27,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869957471] [2022-07-12 08:58:27,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:27,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 08:58:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 08:58:27,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:58:27,221 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2022-07-12 08:58:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:27,389 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2022-07-12 08:58:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:58:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) Word has length 44 [2022-07-12 08:58:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:27,396 INFO L225 Difference]: With dead ends: 1883 [2022-07-12 08:58:27,396 INFO L226 Difference]: Without dead ends: 1881 [2022-07-12 08:58:27,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-07-12 08:58:27,397 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 331 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:27,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 10503 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2022-07-12 08:58:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2022-07-12 08:58:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 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) [2022-07-12 08:58:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2022-07-12 08:58:27,437 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2022-07-12 08:58:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2022-07-12 08:58:27,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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) [2022-07-12 08:58:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2022-07-12 08:58:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-12 08:58:27,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:27,439 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:58:27,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:58:27,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:27,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1100178715, now seen corresponding path program 1 times [2022-07-12 08:58:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:27,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000286746] [2022-07-12 08:58:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:27,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:27,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000286746] [2022-07-12 08:58:27,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000286746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:27,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:27,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181483274] [2022-07-12 08:58:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 08:58:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 08:58:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 08:58:27,483 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-07-12 08:58:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:32,248 INFO L93 Difference]: Finished difference Result 3663 states and 6661 transitions. [2022-07-12 08:58:32,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 08:58:32,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) Word has length 60 [2022-07-12 08:58:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:32,277 INFO L225 Difference]: With dead ends: 3663 [2022-07-12 08:58:32,278 INFO L226 Difference]: Without dead ends: 2910 [2022-07-12 08:58:32,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:32,279 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 2341 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:32,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 771 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-12 08:58:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-07-12 08:58:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2022-07-12 08:58:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2908 states have (on average 1.5357634112792298) internal successors, (4466), 2909 states have internal predecessors, (4466), 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) [2022-07-12 08:58:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4466 transitions. [2022-07-12 08:58:32,343 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4466 transitions. Word has length 60 [2022-07-12 08:58:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:32,344 INFO L495 AbstractCegarLoop]: Abstraction has 2910 states and 4466 transitions. [2022-07-12 08:58:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-07-12 08:58:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4466 transitions. [2022-07-12 08:58:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 08:58:32,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:32,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:32,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:58:32,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-07-12 08:58:32,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:32,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174869813] [2022-07-12 08:58:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 08:58:32,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:32,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174869813] [2022-07-12 08:58:32,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174869813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:32,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:32,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:58:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809364237] [2022-07-12 08:58:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:58:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:58:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:32,408 INFO L87 Difference]: Start difference. First operand 2910 states and 4466 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-12 08:58:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:32,556 INFO L93 Difference]: Finished difference Result 4938 states and 7314 transitions. [2022-07-12 08:58:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 08:58:32,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) Word has length 64 [2022-07-12 08:58:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:32,570 INFO L225 Difference]: With dead ends: 4938 [2022-07-12 08:58:32,570 INFO L226 Difference]: Without dead ends: 4308 [2022-07-12 08:58:32,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:58:32,573 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3075 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:32,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3075 Valid, 3177 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-07-12 08:58:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3538. [2022-07-12 08:58:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3536 states have (on average 1.5107466063348416) internal successors, (5342), 3537 states have internal predecessors, (5342), 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) [2022-07-12 08:58:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5342 transitions. [2022-07-12 08:58:32,727 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5342 transitions. Word has length 64 [2022-07-12 08:58:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:32,727 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5342 transitions. [2022-07-12 08:58:32,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-12 08:58:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5342 transitions. [2022-07-12 08:58:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 08:58:32,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:32,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:32,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:58:32,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:32,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-07-12 08:58:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:32,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123059634] [2022-07-12 08:58:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 08:58:32,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:32,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123059634] [2022-07-12 08:58:32,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123059634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:32,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:32,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:58:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749986604] [2022-07-12 08:58:32,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:32,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:58:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:58:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:32,764 INFO L87 Difference]: Start difference. First operand 3538 states and 5342 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-12 08:58:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:32,940 INFO L93 Difference]: Finished difference Result 5566 states and 8190 transitions. [2022-07-12 08:58:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 08:58:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) Word has length 64 [2022-07-12 08:58:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:32,954 INFO L225 Difference]: With dead ends: 5566 [2022-07-12 08:58:32,954 INFO L226 Difference]: Without dead ends: 4936 [2022-07-12 08:58:32,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:58:32,957 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3067 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:32,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3067 Valid, 3203 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2022-07-12 08:58:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4482. [2022-07-12 08:58:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 1.4834821428571427) internal successors, (6646), 4481 states have internal predecessors, (6646), 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) [2022-07-12 08:58:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6646 transitions. [2022-07-12 08:58:33,112 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6646 transitions. Word has length 64 [2022-07-12 08:58:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:33,113 INFO L495 AbstractCegarLoop]: Abstraction has 4482 states and 6646 transitions. [2022-07-12 08:58:33,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-12 08:58:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6646 transitions. [2022-07-12 08:58:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 08:58:33,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:33,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:33,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 08:58:33,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-07-12 08:58:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:33,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805373125] [2022-07-12 08:58:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:33,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 08:58:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:33,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805373125] [2022-07-12 08:58:33,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805373125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:33,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:33,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:58:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729959094] [2022-07-12 08:58:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:33,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:58:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:58:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:58:33,153 INFO L87 Difference]: Start difference. First operand 4482 states and 6646 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2022-07-12 08:58:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:33,396 INFO L93 Difference]: Finished difference Result 5834 states and 8570 transitions. [2022-07-12 08:58:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 08:58:33,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) Word has length 64 [2022-07-12 08:58:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:33,410 INFO L225 Difference]: With dead ends: 5834 [2022-07-12 08:58:33,411 INFO L226 Difference]: Without dead ends: 5384 [2022-07-12 08:58:33,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:58:33,413 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:33,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2022-07-12 08:58:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4930. [2022-07-12 08:58:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4928 states have (on average 1.4768668831168832) internal successors, (7278), 4929 states have internal predecessors, (7278), 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) [2022-07-12 08:58:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7278 transitions. [2022-07-12 08:58:33,639 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7278 transitions. Word has length 64 [2022-07-12 08:58:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:33,639 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7278 transitions. [2022-07-12 08:58:33,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2022-07-12 08:58:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7278 transitions. [2022-07-12 08:58:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 08:58:33,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:33,644 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:33,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 08:58:33,645 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-07-12 08:58:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:33,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848004204] [2022-07-12 08:58:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:33,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:33,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848004204] [2022-07-12 08:58:33,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848004204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:33,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:33,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:33,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742335480] [2022-07-12 08:58:33,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:33,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:58:33,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:33,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:58:33,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:33,690 INFO L87 Difference]: Start difference. First operand 4930 states and 7278 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-12 08:58:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:33,833 INFO L93 Difference]: Finished difference Result 7582 states and 10980 transitions. [2022-07-12 08:58:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:58:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) Word has length 65 [2022-07-12 08:58:33,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:33,841 INFO L225 Difference]: With dead ends: 7582 [2022-07-12 08:58:33,842 INFO L226 Difference]: Without dead ends: 4932 [2022-07-12 08:58:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:33,846 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:33,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2022-07-12 08:58:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4930. [2022-07-12 08:58:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4928 states have (on average 1.4667207792207793) internal successors, (7228), 4929 states have internal predecessors, (7228), 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) [2022-07-12 08:58:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7228 transitions. [2022-07-12 08:58:34,067 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7228 transitions. Word has length 65 [2022-07-12 08:58:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:34,068 INFO L495 AbstractCegarLoop]: Abstraction has 4930 states and 7228 transitions. [2022-07-12 08:58:34,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-12 08:58:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7228 transitions. [2022-07-12 08:58:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 08:58:34,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:34,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:34,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 08:58:34,069 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-07-12 08:58:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:34,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183105152] [2022-07-12 08:58:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:34,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:34,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183105152] [2022-07-12 08:58:34,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183105152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:58:34,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:58:34,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 08:58:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707520466] [2022-07-12 08:58:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:58:34,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:58:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:34,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:58:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:34,093 INFO L87 Difference]: Start difference. First operand 4930 states and 7228 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-12 08:58:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:34,178 INFO L93 Difference]: Finished difference Result 6258 states and 9055 transitions. [2022-07-12 08:58:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:58:34,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) Word has length 65 [2022-07-12 08:58:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:34,184 INFO L225 Difference]: With dead ends: 6258 [2022-07-12 08:58:34,184 INFO L226 Difference]: Without dead ends: 3608 [2022-07-12 08:58:34,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 08:58:34,188 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:34,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:58:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2022-07-12 08:58:34,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3606. [2022-07-12 08:58:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3604 states have (on average 1.4922308546059933) internal successors, (5378), 3605 states have internal predecessors, (5378), 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) [2022-07-12 08:58:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5378 transitions. [2022-07-12 08:58:34,286 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5378 transitions. Word has length 65 [2022-07-12 08:58:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:34,286 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 5378 transitions. [2022-07-12 08:58:34,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2022-07-12 08:58:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5378 transitions. [2022-07-12 08:58:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 08:58:34,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:34,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 08:58:34,288 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-07-12 08:58:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:34,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406102451] [2022-07-12 08:58:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:34,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:34,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:34,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406102451] [2022-07-12 08:58:34,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406102451] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:58:34,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978575169] [2022-07-12 08:58:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:34,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:58:34,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:58:34,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:58:34,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:58:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:34,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 08:58:34,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:58:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 08:58:34,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 08:58:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 08:58:34,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978575169] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 08:58:34,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 08:58:34,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2022-07-12 08:58:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777468538] [2022-07-12 08:58:34,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 08:58:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 08:58:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 08:58:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-07-12 08:58:35,001 INFO L87 Difference]: Start difference. First operand 3606 states and 5378 transitions. Second operand has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 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) [2022-07-12 08:58:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:39,134 INFO L93 Difference]: Finished difference Result 16272 states and 22353 transitions. [2022-07-12 08:58:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-07-12 08:58:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 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) Word has length 65 [2022-07-12 08:58:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:39,157 INFO L225 Difference]: With dead ends: 16272 [2022-07-12 08:58:39,158 INFO L226 Difference]: Without dead ends: 14946 [2022-07-12 08:58:39,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 119 SyntacticMatches, 5 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6702 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2917, Invalid=13853, Unknown=0, NotChecked=0, Total=16770 [2022-07-12 08:58:39,167 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 15411 mSDsluCounter, 8585 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15411 SdHoareTripleChecker+Valid, 10177 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:39,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15411 Valid, 10177 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:58:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14946 states. [2022-07-12 08:58:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14946 to 8768. [2022-07-12 08:58:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8768 states, 8766 states have (on average 1.380333105179101) internal successors, (12100), 8767 states have internal predecessors, (12100), 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) [2022-07-12 08:58:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 12100 transitions. [2022-07-12 08:58:39,743 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 12100 transitions. Word has length 65 [2022-07-12 08:58:39,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:39,744 INFO L495 AbstractCegarLoop]: Abstraction has 8768 states and 12100 transitions. [2022-07-12 08:58:39,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 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) [2022-07-12 08:58:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 12100 transitions. [2022-07-12 08:58:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 08:58:39,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:39,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:39,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:58:39,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 08:58:39,968 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1505794396, now seen corresponding path program 1 times [2022-07-12 08:58:39,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:39,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148831192] [2022-07-12 08:58:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:39,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:40,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148831192] [2022-07-12 08:58:40,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148831192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:58:40,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775468651] [2022-07-12 08:58:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:58:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:58:40,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:58:40,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:58:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:40,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 08:58:40,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:58:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:40,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 08:58:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:40,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775468651] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 08:58:40,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 08:58:40,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-07-12 08:58:40,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014324146] [2022-07-12 08:58:40,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 08:58:40,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 08:58:40,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 08:58:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-07-12 08:58:40,877 INFO L87 Difference]: Start difference. First operand 8768 states and 12100 transitions. Second operand has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 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) [2022-07-12 08:58:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:58:42,848 INFO L93 Difference]: Finished difference Result 26885 states and 35712 transitions. [2022-07-12 08:58:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 08:58:42,850 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 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) Word has length 66 [2022-07-12 08:58:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:58:42,885 INFO L225 Difference]: With dead ends: 26885 [2022-07-12 08:58:42,885 INFO L226 Difference]: Without dead ends: 22066 [2022-07-12 08:58:42,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2022-07-12 08:58:42,896 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 10943 mSDsluCounter, 5018 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10943 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:58:42,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10943 Valid, 6553 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 08:58:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22066 states. [2022-07-12 08:58:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22066 to 16479. [2022-07-12 08:58:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16479 states, 16477 states have (on average 1.3413849608545245) internal successors, (22102), 16478 states have internal predecessors, (22102), 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) [2022-07-12 08:58:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16479 states to 16479 states and 22102 transitions. [2022-07-12 08:58:44,155 INFO L78 Accepts]: Start accepts. Automaton has 16479 states and 22102 transitions. Word has length 66 [2022-07-12 08:58:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:58:44,156 INFO L495 AbstractCegarLoop]: Abstraction has 16479 states and 22102 transitions. [2022-07-12 08:58:44,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 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) [2022-07-12 08:58:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16479 states and 22102 transitions. [2022-07-12 08:58:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 08:58:44,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:58:44,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:58:44,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 08:58:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 08:58:44,372 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:58:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:58:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2022-07-12 08:58:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:58:44,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061670590] [2022-07-12 08:58:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:58:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:44,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:58:44,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061670590] [2022-07-12 08:58:44,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061670590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:58:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244098105] [2022-07-12 08:58:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:58:44,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:58:44,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:58:44,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:58:44,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 08:58:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:58:44,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 08:58:44,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:58:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:45,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 08:58:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:58:45,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244098105] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 08:58:45,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 08:58:45,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-07-12 08:58:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995356271] [2022-07-12 08:58:45,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 08:58:45,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 08:58:45,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:58:45,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 08:58:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-07-12 08:58:45,877 INFO L87 Difference]: Start difference. First operand 16479 states and 22102 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 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) [2022-07-12 08:59:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:59:55,285 INFO L93 Difference]: Finished difference Result 249794 states and 323095 transitions. [2022-07-12 08:59:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2022-07-12 08:59:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 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) Word has length 66 [2022-07-12 08:59:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:59:55,940 INFO L225 Difference]: With dead ends: 249794 [2022-07-12 08:59:55,940 INFO L226 Difference]: Without dead ends: 235595 [2022-07-12 08:59:56,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208473 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=46191, Invalid=364049, Unknown=0, NotChecked=0, Total=410240 [2022-07-12 08:59:56,031 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 26032 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 2018 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26032 SdHoareTripleChecker+Valid, 18142 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2018 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 08:59:56,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26032 Valid, 18142 Invalid, 5301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2018 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 08:59:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235595 states. [2022-07-12 09:00:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235595 to 44059. [2022-07-12 09:00:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44059 states, 44057 states have (on average 1.3152506979594616) internal successors, (57946), 44058 states have internal predecessors, (57946), 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) [2022-07-12 09:00:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44059 states to 44059 states and 57946 transitions. [2022-07-12 09:00:03,052 INFO L78 Accepts]: Start accepts. Automaton has 44059 states and 57946 transitions. Word has length 66 [2022-07-12 09:00:03,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:00:03,053 INFO L495 AbstractCegarLoop]: Abstraction has 44059 states and 57946 transitions. [2022-07-12 09:00:03,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 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) [2022-07-12 09:00:03,053 INFO L276 IsEmpty]: Start isEmpty. Operand 44059 states and 57946 transitions. [2022-07-12 09:00:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:00:03,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:00:03,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:00:03,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:00:03,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 09:00:03,272 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:00:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:00:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-07-12 09:00:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:00:03,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169402489] [2022-07-12 09:00:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:00:03,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:00:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:00:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:00:03,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:00:03,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169402489] [2022-07-12 09:00:03,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169402489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:00:03,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:00:03,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:00:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901954535] [2022-07-12 09:00:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:00:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:00:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:00:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:00:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:00:03,308 INFO L87 Difference]: Start difference. First operand 44059 states and 57946 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2022-07-12 09:00:08,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:00:08,884 INFO L93 Difference]: Finished difference Result 86043 states and 112486 transitions. [2022-07-12 09:00:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:00:08,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) Word has length 66 [2022-07-12 09:00:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:00:08,943 INFO L225 Difference]: With dead ends: 86043 [2022-07-12 09:00:08,943 INFO L226 Difference]: Without dead ends: 44264 [2022-07-12 09:00:08,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:00:08,969 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4674 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:00:08,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 3008 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:00:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44264 states. [2022-07-12 09:00:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44264 to 42086. [2022-07-12 09:00:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42086 states, 42084 states have (on average 1.2971675696226594) internal successors, (54590), 42085 states have internal predecessors, (54590), 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) [2022-07-12 09:00:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42086 states to 42086 states and 54590 transitions. [2022-07-12 09:00:14,230 INFO L78 Accepts]: Start accepts. Automaton has 42086 states and 54590 transitions. Word has length 66 [2022-07-12 09:00:14,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:00:14,231 INFO L495 AbstractCegarLoop]: Abstraction has 42086 states and 54590 transitions. [2022-07-12 09:00:14,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2022-07-12 09:00:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 42086 states and 54590 transitions. [2022-07-12 09:00:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:00:14,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:00:14,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:00:14,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:00:14,232 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:00:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:00:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash 138650479, now seen corresponding path program 1 times [2022-07-12 09:00:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:00:14,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995180443] [2022-07-12 09:00:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:00:14,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:00:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:00:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:00:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:00:14,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995180443] [2022-07-12 09:00:14,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995180443] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:00:14,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793536314] [2022-07-12 09:00:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:00:14,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:00:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:00:14,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:00:14,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:00:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:00:14,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-12 09:00:14,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:00:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:00:16,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:00:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:00:17,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793536314] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:00:17,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:00:17,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 19] total 48 [2022-07-12 09:00:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904422289] [2022-07-12 09:00:17,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:00:17,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-12 09:00:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:00:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-12 09:00:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 09:00:17,630 INFO L87 Difference]: Start difference. First operand 42086 states and 54590 transitions. Second operand has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 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) [2022-07-12 09:01:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:19,953 INFO L93 Difference]: Finished difference Result 258840 states and 325687 transitions. [2022-07-12 09:01:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2022-07-12 09:01:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 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) Word has length 67 [2022-07-12 09:01:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:20,351 INFO L225 Difference]: With dead ends: 258840 [2022-07-12 09:01:20,352 INFO L226 Difference]: Without dead ends: 231063 [2022-07-12 09:01:20,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55022 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=13516, Invalid=115006, Unknown=0, NotChecked=0, Total=128522 [2022-07-12 09:01:20,425 INFO L413 NwaCegarLoop]: 2088 mSDtfsCounter, 20500 mSDsluCounter, 30996 mSDsCounter, 0 mSdLazyCounter, 4316 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20500 SdHoareTripleChecker+Valid, 33084 SdHoareTripleChecker+Invalid, 4913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 4316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:20,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20500 Valid, 33084 Invalid, 4913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [597 Valid, 4316 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 09:01:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231063 states. [2022-07-12 09:01:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231063 to 51123. [2022-07-12 09:01:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51123 states, 51121 states have (on average 1.289000606404413) internal successors, (65895), 51122 states have internal predecessors, (65895), 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) [2022-07-12 09:01:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51123 states to 51123 states and 65895 transitions. [2022-07-12 09:01:29,824 INFO L78 Accepts]: Start accepts. Automaton has 51123 states and 65895 transitions. Word has length 67 [2022-07-12 09:01:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:29,825 INFO L495 AbstractCegarLoop]: Abstraction has 51123 states and 65895 transitions. [2022-07-12 09:01:29,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 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) [2022-07-12 09:01:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 51123 states and 65895 transitions. [2022-07-12 09:01:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:01:29,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:29,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:29,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:01:30,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:01:30,028 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash -113994759, now seen corresponding path program 1 times [2022-07-12 09:01:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:30,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570995878] [2022-07-12 09:01:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:30,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:01:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:30,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570995878] [2022-07-12 09:01:30,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570995878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:30,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:30,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769162181] [2022-07-12 09:01:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:30,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:01:30,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:01:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:01:30,093 INFO L87 Difference]: Start difference. First operand 51123 states and 65895 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2022-07-12 09:01:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:36,986 INFO L93 Difference]: Finished difference Result 87595 states and 112499 transitions. [2022-07-12 09:01:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:01:36,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) Word has length 67 [2022-07-12 09:01:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:37,034 INFO L225 Difference]: With dead ends: 87595 [2022-07-12 09:01:37,034 INFO L226 Difference]: Without dead ends: 38752 [2022-07-12 09:01:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:01:37,063 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4507 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:37,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 2959 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38752 states. [2022-07-12 09:01:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38752 to 38752. [2022-07-12 09:01:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38752 states, 38750 states have (on average 1.2795612903225806) internal successors, (49583), 38751 states have internal predecessors, (49583), 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) [2022-07-12 09:01:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38752 states to 38752 states and 49583 transitions. [2022-07-12 09:01:46,657 INFO L78 Accepts]: Start accepts. Automaton has 38752 states and 49583 transitions. Word has length 67 [2022-07-12 09:01:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:46,657 INFO L495 AbstractCegarLoop]: Abstraction has 38752 states and 49583 transitions. [2022-07-12 09:01:46,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2022-07-12 09:01:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 38752 states and 49583 transitions. [2022-07-12 09:01:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:01:46,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:46,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:46,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:01:46,660 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:46,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1235279528, now seen corresponding path program 1 times [2022-07-12 09:01:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:46,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998747207] [2022-07-12 09:01:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:46,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:46,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998747207] [2022-07-12 09:01:46,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998747207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:46,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:46,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677496584] [2022-07-12 09:01:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:46,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:46,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:46,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:46,705 INFO L87 Difference]: Start difference. First operand 38752 states and 49583 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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)