./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.5.ufo.BOUNDED-10.pals+Problem12_label08.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 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:15:27,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:15:27,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:15:27,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:15:27,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:15:27,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:15:27,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:15:27,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:15:27,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:15:27,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:15:27,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:15:27,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:15:27,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:15:27,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:15:27,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:15:27,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:15:27,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:15:27,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:15:27,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:15:27,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:15:27,833 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:15:27,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:15:27,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:15:27,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:15:27,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:15:27,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:15:27,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:15:27,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:15:27,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:15:27,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:15:27,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:15:27,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:15:27,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:15:27,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:15:27,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:15:27,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:15:27,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:15:27,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:15:27,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:15:27,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:15:27,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:15:27,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:15:27,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:15:27,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:15:27,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:15:27,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:15:27,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:15:27,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:15:27,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:15:27,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:15:27,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:15:27,887 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:15:27,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:15:27,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:15:27,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:15:27,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:15:27,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:15:27,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:15:27,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:15:27,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:15:27,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:15:27,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:15:27,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:15:27,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:15:27,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:15:27,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:15:27,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:15:27,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:15:27,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:15:27,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:15:27,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:15:27,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:15:27,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:15:27,892 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:15:27,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:15:27,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:15:27,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a [2022-07-19 20:15:28,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:15:28,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:15:28,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:15:28,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:15:28,111 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:15:28,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-07-19 20:15:28,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c14cb0d7/12b1c65d8ff54a9bbfe8790c3eed1a61/FLAG493b545cc [2022-07-19 20:15:28,785 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:15:28,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-07-19 20:15:28,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c14cb0d7/12b1c65d8ff54a9bbfe8790c3eed1a61/FLAG493b545cc [2022-07-19 20:15:29,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c14cb0d7/12b1c65d8ff54a9bbfe8790c3eed1a61 [2022-07-19 20:15:29,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:15:29,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:15:29,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:15:29,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:15:29,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:15:29,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:15:29" (1/1) ... [2022-07-19 20:15:29,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db377fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:29, skipping insertion in model container [2022-07-19 20:15:29,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:15:29" (1/1) ... [2022-07-19 20:15:29,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:15:29,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:15:29,602 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2022-07-19 20:15:29,625 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2022-07-19 20:15:30,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:15:30,309 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:15:30,348 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2022-07-19 20:15:30,365 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.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2022-07-19 20:15:30,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:15:30,784 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:15:30,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30 WrapperNode [2022-07-19 20:15:30,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:15:30,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:15:30,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:15:30,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:15:30,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:30,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,173 INFO L137 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5090 [2022-07-19 20:15:31,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:15:31,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:15:31,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:15:31,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:15:31,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:15:31,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:15:31,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:15:31,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:15:31,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (1/1) ... [2022-07-19 20:15:31,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:15:31,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:15:31,679 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) [2022-07-19 20:15:31,744 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 [2022-07-19 20:15:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:15:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:15:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:15:31,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:15:31,943 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:15:31,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:15:35,524 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:15:35,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:15:35,543 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 20:15:35,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:15:35 BoogieIcfgContainer [2022-07-19 20:15:35,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:15:35,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:15:35,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:15:35,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:15:35,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:15:29" (1/3) ... [2022-07-19 20:15:35,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f0639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:15:35, skipping insertion in model container [2022-07-19 20:15:35,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:15:30" (2/3) ... [2022-07-19 20:15:35,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f0639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:15:35, skipping insertion in model container [2022-07-19 20:15:35,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:15:35" (3/3) ... [2022-07-19 20:15:35,556 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2022-07-19 20:15:35,569 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:15:35,569 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:15:35,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:15:35,659 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@3f5f5754, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@605f11b [2022-07-19 20:15:35,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:15:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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) [2022-07-19 20:15:35,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 20:15:35,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:35,688 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] [2022-07-19 20:15:35,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash -416780307, now seen corresponding path program 1 times [2022-07-19 20:15:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:35,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214600832] [2022-07-19 20:15:35,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:35,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:35,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:35,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214600832] [2022-07-19 20:15:35,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214600832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:35,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:35,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 20:15:35,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838588109] [2022-07-19 20:15:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:35,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:35,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:35,941 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 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 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2022-07-19 20:15:39,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:39,310 INFO L93 Difference]: Finished difference Result 2536 states and 4876 transitions. [2022-07-19 20:15:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2022-07-19 20:15:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:39,336 INFO L225 Difference]: With dead ends: 2536 [2022-07-19 20:15:39,337 INFO L226 Difference]: Without dead ends: 1594 [2022-07-19 20:15:39,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:39,349 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 958 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:39,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 636 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 20:15:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-07-19 20:15:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-07-19 20:15:39,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1592 states have (on average 1.64321608040201) internal successors, (2616), 1593 states have internal predecessors, (2616), 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) [2022-07-19 20:15:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2616 transitions. [2022-07-19 20:15:39,455 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2616 transitions. Word has length 30 [2022-07-19 20:15:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:39,456 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2616 transitions. [2022-07-19 20:15:39,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2022-07-19 20:15:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2616 transitions. [2022-07-19 20:15:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 20:15:39,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:39,458 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] [2022-07-19 20:15:39,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:15:39,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2022-07-19 20:15:39,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:39,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124585957] [2022-07-19 20:15:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:39,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124585957] [2022-07-19 20:15:39,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124585957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:39,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:39,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:15:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817933172] [2022-07-19 20:15:39,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:39,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:15:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:15:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:15:39,569 INFO L87 Difference]: Start difference. First operand 1594 states and 2616 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-07-19 20:15:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:39,650 INFO L93 Difference]: Finished difference Result 1650 states and 2702 transitions. [2022-07-19 20:15:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:15:39,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2022-07-19 20:15:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:39,658 INFO L225 Difference]: With dead ends: 1650 [2022-07-19 20:15:39,659 INFO L226 Difference]: Without dead ends: 1594 [2022-07-19 20:15:39,662 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 [2022-07-19 20:15:39,663 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:39,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-07-19 20:15:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-07-19 20:15:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1592 states have (on average 1.6237437185929648) internal successors, (2585), 1593 states have internal predecessors, (2585), 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) [2022-07-19 20:15:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2585 transitions. [2022-07-19 20:15:39,702 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2585 transitions. Word has length 34 [2022-07-19 20:15:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2585 transitions. [2022-07-19 20:15:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2022-07-19 20:15:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2585 transitions. [2022-07-19 20:15:39,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:15:39,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:39,705 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, 1, 1, 1, 1] [2022-07-19 20:15:39,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:15:39,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2022-07-19 20:15:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:39,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184671876] [2022-07-19 20:15:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:39,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184671876] [2022-07-19 20:15:39,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184671876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:39,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:39,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:15:39,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664971741] [2022-07-19 20:15:39,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:39,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:39,782 INFO L87 Difference]: Start difference. First operand 1594 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:39,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:39,817 INFO L93 Difference]: Finished difference Result 1692 states and 2739 transitions. [2022-07-19 20:15:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:39,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 [2022-07-19 20:15:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:39,825 INFO L225 Difference]: With dead ends: 1692 [2022-07-19 20:15:39,825 INFO L226 Difference]: Without dead ends: 1640 [2022-07-19 20:15:39,826 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 [2022-07-19 20:15:39,827 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 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 [2022-07-19 20:15:39,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-07-19 20:15:39,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1638. [2022-07-19 20:15:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1636 states have (on average 1.6228606356968216) internal successors, (2655), 1637 states have internal predecessors, (2655), 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) [2022-07-19 20:15:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2655 transitions. [2022-07-19 20:15:39,864 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2655 transitions. Word has length 64 [2022-07-19 20:15:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:39,865 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2655 transitions. [2022-07-19 20:15:39,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2655 transitions. [2022-07-19 20:15:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:15:39,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:39,867 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, 1, 1, 1, 1] [2022-07-19 20:15:39,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:15:39,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2022-07-19 20:15:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:39,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140631700] [2022-07-19 20:15:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:39,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140631700] [2022-07-19 20:15:39,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140631700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:39,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:39,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:15:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207854638] [2022-07-19 20:15:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:39,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:39,926 INFO L87 Difference]: Start difference. First operand 1638 states and 2655 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:39,959 INFO L93 Difference]: Finished difference Result 1818 states and 2939 transitions. [2022-07-19 20:15:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:39,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 [2022-07-19 20:15:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:39,967 INFO L225 Difference]: With dead ends: 1818 [2022-07-19 20:15:39,967 INFO L226 Difference]: Without dead ends: 1722 [2022-07-19 20:15:39,968 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 [2022-07-19 20:15:39,969 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 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 [2022-07-19 20:15:39,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-07-19 20:15:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2022-07-19 20:15:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.620488940628638) internal successors, (2784), 1719 states have internal predecessors, (2784), 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) [2022-07-19 20:15:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2784 transitions. [2022-07-19 20:15:40,007 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2784 transitions. Word has length 64 [2022-07-19 20:15:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:40,007 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2784 transitions. [2022-07-19 20:15:40,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2784 transitions. [2022-07-19 20:15:40,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:15:40,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:40,009 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, 1, 1, 1, 1] [2022-07-19 20:15:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:15:40,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:40,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2022-07-19 20:15:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:40,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243039667] [2022-07-19 20:15:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:40,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:40,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:40,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243039667] [2022-07-19 20:15:40,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243039667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:40,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:40,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:15:40,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125838580] [2022-07-19 20:15:40,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:40,060 INFO L87 Difference]: Start difference. First operand 1720 states and 2784 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:40,106 INFO L93 Difference]: Finished difference Result 2052 states and 3306 transitions. [2022-07-19 20:15:40,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:40,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 [2022-07-19 20:15:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:40,117 INFO L225 Difference]: With dead ends: 2052 [2022-07-19 20:15:40,117 INFO L226 Difference]: Without dead ends: 1874 [2022-07-19 20:15:40,119 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 [2022-07-19 20:15:40,121 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 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 [2022-07-19 20:15:40,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-07-19 20:15:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1872. [2022-07-19 20:15:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1870 states have (on average 1.6149732620320856) internal successors, (3020), 1871 states have internal predecessors, (3020), 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) [2022-07-19 20:15:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3020 transitions. [2022-07-19 20:15:40,169 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3020 transitions. Word has length 64 [2022-07-19 20:15:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:40,172 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3020 transitions. [2022-07-19 20:15:40,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3020 transitions. [2022-07-19 20:15:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:15:40,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:40,174 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, 1, 1, 1, 1] [2022-07-19 20:15:40,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:15:40,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2022-07-19 20:15:40,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:40,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896797926] [2022-07-19 20:15:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:40,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:40,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:40,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896797926] [2022-07-19 20:15:40,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896797926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:40,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:40,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:15:40,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875496001] [2022-07-19 20:15:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:40,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:40,240 INFO L87 Difference]: Start difference. First operand 1872 states and 3020 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:40,292 INFO L93 Difference]: Finished difference Result 2484 states and 3974 transitions. [2022-07-19 20:15:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 [2022-07-19 20:15:40,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:40,305 INFO L225 Difference]: With dead ends: 2484 [2022-07-19 20:15:40,305 INFO L226 Difference]: Without dead ends: 2154 [2022-07-19 20:15:40,307 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 [2022-07-19 20:15:40,310 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 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 [2022-07-19 20:15:40,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-07-19 20:15:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2152. [2022-07-19 20:15:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2150 states have (on average 1.6037209302325581) internal successors, (3448), 2151 states have internal predecessors, (3448), 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) [2022-07-19 20:15:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3448 transitions. [2022-07-19 20:15:40,404 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3448 transitions. Word has length 64 [2022-07-19 20:15:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:40,404 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3448 transitions. [2022-07-19 20:15:40,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3448 transitions. [2022-07-19 20:15:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:15:40,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:40,406 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, 1, 1, 1, 1] [2022-07-19 20:15:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:15:40,406 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:40,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2022-07-19 20:15:40,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:40,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796834253] [2022-07-19 20:15:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:40,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:40,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796834253] [2022-07-19 20:15:40,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796834253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:40,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:40,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:15:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695430874] [2022-07-19 20:15:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:40,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:40,495 INFO L87 Difference]: Start difference. First operand 2152 states and 3448 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:40,570 INFO L93 Difference]: Finished difference Result 3276 states and 5178 transitions. [2022-07-19 20:15:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 [2022-07-19 20:15:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:40,583 INFO L225 Difference]: With dead ends: 3276 [2022-07-19 20:15:40,583 INFO L226 Difference]: Without dead ends: 2666 [2022-07-19 20:15:40,586 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 [2022-07-19 20:15:40,588 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 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 [2022-07-19 20:15:40,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:40,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-07-19 20:15:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2022-07-19 20:15:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2662 states have (on average 1.583771600300526) internal successors, (4216), 2663 states have internal predecessors, (4216), 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) [2022-07-19 20:15:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 4216 transitions. [2022-07-19 20:15:40,679 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 4216 transitions. Word has length 64 [2022-07-19 20:15:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:40,680 INFO L495 AbstractCegarLoop]: Abstraction has 2664 states and 4216 transitions. [2022-07-19 20:15:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 20:15:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 4216 transitions. [2022-07-19 20:15:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 20:15:40,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:40,682 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, 1, 1, 1, 1] [2022-07-19 20:15:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:15:40,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2022-07-19 20:15:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118770612] [2022-07-19 20:15:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:40,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118770612] [2022-07-19 20:15:40,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118770612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:40,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:40,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:15:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198049107] [2022-07-19 20:15:40,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:15:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:15:40,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:15:40,763 INFO L87 Difference]: Start difference. First operand 2664 states and 4216 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-07-19 20:15:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:41,464 INFO L93 Difference]: Finished difference Result 13884 states and 21346 transitions. [2022-07-19 20:15:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:15:41,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 [2022-07-19 20:15:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:41,535 INFO L225 Difference]: With dead ends: 13884 [2022-07-19 20:15:41,535 INFO L226 Difference]: Without dead ends: 12762 [2022-07-19 20:15:41,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:15:41,543 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:41,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2022-07-19 20:15:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 3784. [2022-07-19 20:15:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.550502379693284) internal successors, (5864), 3783 states have internal predecessors, (5864), 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) [2022-07-19 20:15:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5864 transitions. [2022-07-19 20:15:41,818 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5864 transitions. Word has length 64 [2022-07-19 20:15:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:41,818 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5864 transitions. [2022-07-19 20:15:41,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2022-07-19 20:15:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5864 transitions. [2022-07-19 20:15:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:15:41,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:41,820 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, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:41,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:15:41,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2022-07-19 20:15:41,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:41,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766229686] [2022-07-19 20:15:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:41,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:41,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766229686] [2022-07-19 20:15:41,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766229686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:41,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:41,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 20:15:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619953413] [2022-07-19 20:15:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:41,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:15:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:41,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:15:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 20:15:41,878 INFO L87 Difference]: Start difference. First operand 3784 states and 5864 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-07-19 20:15:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:42,102 INFO L93 Difference]: Finished difference Result 7070 states and 10780 transitions. [2022-07-19 20:15:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:15:42,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 [2022-07-19 20:15:42,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:42,114 INFO L225 Difference]: With dead ends: 7070 [2022-07-19 20:15:42,114 INFO L226 Difference]: Without dead ends: 4828 [2022-07-19 20:15:42,119 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 [2022-07-19 20:15:42,120 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 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 [2022-07-19 20:15:42,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:42,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-07-19 20:15:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4826. [2022-07-19 20:15:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.5277777777777777) internal successors, (7370), 4825 states have internal predecessors, (7370), 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) [2022-07-19 20:15:42,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7370 transitions. [2022-07-19 20:15:42,521 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7370 transitions. Word has length 66 [2022-07-19 20:15:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:42,522 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7370 transitions. [2022-07-19 20:15:42,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-07-19 20:15:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7370 transitions. [2022-07-19 20:15:42,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:15:42,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:42,523 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, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:15:42,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2022-07-19 20:15:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301620233] [2022-07-19 20:15:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301620233] [2022-07-19 20:15:42,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301620233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:42,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:42,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:15:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630788126] [2022-07-19 20:15:42,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:42,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:15:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:15:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:15:42,682 INFO L87 Difference]: Start difference. First operand 4826 states and 7370 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-07-19 20:15:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:43,097 INFO L93 Difference]: Finished difference Result 8110 states and 12236 transitions. [2022-07-19 20:15:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:15:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 [2022-07-19 20:15:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:43,109 INFO L225 Difference]: With dead ends: 8110 [2022-07-19 20:15:43,109 INFO L226 Difference]: Without dead ends: 4828 [2022-07-19 20:15:43,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:15:43,116 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 6144 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6144 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:43,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6144 Valid, 1867 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:43,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-07-19 20:15:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4826. [2022-07-19 20:15:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.5178275290215588) internal successors, (7322), 4825 states have internal predecessors, (7322), 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) [2022-07-19 20:15:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7322 transitions. [2022-07-19 20:15:43,493 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7322 transitions. Word has length 66 [2022-07-19 20:15:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:43,494 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7322 transitions. [2022-07-19 20:15:43,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-07-19 20:15:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7322 transitions. [2022-07-19 20:15:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:15:43,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:43,498 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:15:43,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2022-07-19 20:15:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540229412] [2022-07-19 20:15:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:43,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540229412] [2022-07-19 20:15:43,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540229412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:43,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:43,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:15:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111469174] [2022-07-19 20:15:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:15:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:15:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:15:43,592 INFO L87 Difference]: Start difference. First operand 4826 states and 7322 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 20:15:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:43,936 INFO L93 Difference]: Finished difference Result 8108 states and 12139 transitions. [2022-07-19 20:15:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:15:43,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 [2022-07-19 20:15:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:43,947 INFO L225 Difference]: With dead ends: 8108 [2022-07-19 20:15:43,947 INFO L226 Difference]: Without dead ends: 4826 [2022-07-19 20:15:43,954 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 [2022-07-19 20:15:43,955 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 4627 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:43,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 3022 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2022-07-19 20:15:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4826. [2022-07-19 20:15:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.50787728026534) internal successors, (7274), 4825 states have internal predecessors, (7274), 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) [2022-07-19 20:15:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7274 transitions. [2022-07-19 20:15:44,240 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7274 transitions. Word has length 67 [2022-07-19 20:15:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:44,240 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7274 transitions. [2022-07-19 20:15:44,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 20:15:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7274 transitions. [2022-07-19 20:15:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:15:44,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:44,242 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:44,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:15:44,242 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:44,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:44,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2022-07-19 20:15:44,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:44,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048762425] [2022-07-19 20:15:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:44,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:44,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048762425] [2022-07-19 20:15:44,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048762425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:44,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:44,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:15:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780360449] [2022-07-19 20:15:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:15:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:15:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:15:44,298 INFO L87 Difference]: Start difference. First operand 4826 states and 7274 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 20:15:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:44,706 INFO L93 Difference]: Finished difference Result 8108 states and 12043 transitions. [2022-07-19 20:15:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:15:44,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 [2022-07-19 20:15:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:44,718 INFO L225 Difference]: With dead ends: 8108 [2022-07-19 20:15:44,718 INFO L226 Difference]: Without dead ends: 4826 [2022-07-19 20:15:44,724 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 [2022-07-19 20:15:44,724 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 4660 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:44,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 3023 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2022-07-19 20:15:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4826. [2022-07-19 20:15:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.497927031509121) internal successors, (7226), 4825 states have internal predecessors, (7226), 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) [2022-07-19 20:15:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7226 transitions. [2022-07-19 20:15:45,030 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7226 transitions. Word has length 67 [2022-07-19 20:15:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:45,031 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7226 transitions. [2022-07-19 20:15:45,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 20:15:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7226 transitions. [2022-07-19 20:15:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:15:45,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:45,032 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:45,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:15:45,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:45,033 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2022-07-19 20:15:45,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:45,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553748436] [2022-07-19 20:15:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:45,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:15:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:45,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553748436] [2022-07-19 20:15:45,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553748436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:45,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:45,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:15:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262369683] [2022-07-19 20:15:45,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:45,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:15:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:15:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:15:45,086 INFO L87 Difference]: Start difference. First operand 4826 states and 7226 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 20:15:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:45,726 INFO L93 Difference]: Finished difference Result 7669 states and 11200 transitions. [2022-07-19 20:15:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:15:45,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 [2022-07-19 20:15:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:45,743 INFO L225 Difference]: With dead ends: 7669 [2022-07-19 20:15:45,743 INFO L226 Difference]: Without dead ends: 7667 [2022-07-19 20:15:45,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:15:45,747 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 211 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:45,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 6242 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:15:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2022-07-19 20:15:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 5018. [2022-07-19 20:15:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.4756778309409888) internal successors, (7402), 5017 states have internal predecessors, (7402), 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) [2022-07-19 20:15:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 7402 transitions. [2022-07-19 20:15:46,177 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 7402 transitions. Word has length 67 [2022-07-19 20:15:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:46,177 INFO L495 AbstractCegarLoop]: Abstraction has 5018 states and 7402 transitions. [2022-07-19 20:15:46,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-19 20:15:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 7402 transitions. [2022-07-19 20:15:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:15:46,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:46,181 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:46,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:15:46,182 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2022-07-19 20:15:46,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:46,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723150753] [2022-07-19 20:15:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 20:15:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:46,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723150753] [2022-07-19 20:15:46,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723150753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:46,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:46,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:15:46,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518869726] [2022-07-19 20:15:46,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:46,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:15:46,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:15:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:15:46,263 INFO L87 Difference]: Start difference. First operand 5018 states and 7402 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2022-07-19 20:15:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:48,252 INFO L93 Difference]: Finished difference Result 23094 states and 32832 transitions. [2022-07-19 20:15:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:15:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 95 [2022-07-19 20:15:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:48,293 INFO L225 Difference]: With dead ends: 23094 [2022-07-19 20:15:48,293 INFO L226 Difference]: Without dead ends: 19620 [2022-07-19 20:15:48,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:15:48,305 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6581 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6581 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:48,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6581 Valid, 3534 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19620 states. [2022-07-19 20:15:49,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19620 to 8490. [2022-07-19 20:15:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8488 states have (on average 1.4432139491046183) internal successors, (12250), 8489 states have internal predecessors, (12250), 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) [2022-07-19 20:15:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 12250 transitions. [2022-07-19 20:15:49,136 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 12250 transitions. Word has length 95 [2022-07-19 20:15:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:49,137 INFO L495 AbstractCegarLoop]: Abstraction has 8490 states and 12250 transitions. [2022-07-19 20:15:49,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2022-07-19 20:15:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 12250 transitions. [2022-07-19 20:15:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:15:49,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:49,143 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:15:49,143 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2022-07-19 20:15:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:49,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755886307] [2022-07-19 20:15:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 20:15:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:49,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755886307] [2022-07-19 20:15:49,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755886307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:49,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:49,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:15:49,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584312028] [2022-07-19 20:15:49,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:49,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:15:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:15:49,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:15:49,223 INFO L87 Difference]: Start difference. First operand 8490 states and 12250 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2022-07-19 20:15:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:51,106 INFO L93 Difference]: Finished difference Result 26566 states and 37680 transitions. [2022-07-19 20:15:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:15:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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 95 [2022-07-19 20:15:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:51,160 INFO L225 Difference]: With dead ends: 26566 [2022-07-19 20:15:51,160 INFO L226 Difference]: Without dead ends: 23092 [2022-07-19 20:15:51,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:15:51,178 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6480 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:51,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6480 Valid, 3582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23092 states. [2022-07-19 20:15:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23092 to 13706. [2022-07-19 20:15:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13706 states, 13704 states have (on average 1.4216287215411558) internal successors, (19482), 13705 states have internal predecessors, (19482), 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) [2022-07-19 20:15:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 19482 transitions. [2022-07-19 20:15:52,511 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 19482 transitions. Word has length 95 [2022-07-19 20:15:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:52,511 INFO L495 AbstractCegarLoop]: Abstraction has 13706 states and 19482 transitions. [2022-07-19 20:15:52,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2022-07-19 20:15:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 19482 transitions. [2022-07-19 20:15:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:15:52,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:52,516 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:52,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:15:52,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2022-07-19 20:15:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:52,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470894040] [2022-07-19 20:15:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 20:15:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470894040] [2022-07-19 20:15:52,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470894040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:52,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:52,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:15:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632414863] [2022-07-19 20:15:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:15:52,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:15:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:15:52,602 INFO L87 Difference]: Start difference. First operand 13706 states and 19482 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2022-07-19 20:15:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:54,566 INFO L93 Difference]: Finished difference Result 30038 states and 42528 transitions. [2022-07-19 20:15:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:15:54,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 95 [2022-07-19 20:15:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:54,627 INFO L225 Difference]: With dead ends: 30038 [2022-07-19 20:15:54,627 INFO L226 Difference]: Without dead ends: 26564 [2022-07-19 20:15:54,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:15:54,644 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6492 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6492 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:54,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6492 Valid, 3626 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26564 states. [2022-07-19 20:15:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26564 to 17178. [2022-07-19 20:15:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17178 states, 17176 states have (on average 1.4165114112715418) internal successors, (24330), 17177 states have internal predecessors, (24330), 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) [2022-07-19 20:15:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17178 states to 17178 states and 24330 transitions. [2022-07-19 20:15:55,968 INFO L78 Accepts]: Start accepts. Automaton has 17178 states and 24330 transitions. Word has length 95 [2022-07-19 20:15:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:15:55,968 INFO L495 AbstractCegarLoop]: Abstraction has 17178 states and 24330 transitions. [2022-07-19 20:15:55,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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) [2022-07-19 20:15:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 17178 states and 24330 transitions. [2022-07-19 20:15:55,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:15:55,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:15:55,974 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:15:55,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:15:55,974 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:15:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:15:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2022-07-19 20:15:55,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:15:55,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954249863] [2022-07-19 20:15:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:15:55,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:15:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:15:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:15:56,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:15:56,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954249863] [2022-07-19 20:15:56,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954249863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:15:56,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:15:56,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:15:56,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887828293] [2022-07-19 20:15:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:15:56,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:15:56,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:15:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:15:56,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:15:56,056 INFO L87 Difference]: Start difference. First operand 17178 states and 24330 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2022-07-19 20:15:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:15:58,547 INFO L93 Difference]: Finished difference Result 33510 states and 47376 transitions. [2022-07-19 20:15:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:15:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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 95 [2022-07-19 20:15:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:15:58,624 INFO L225 Difference]: With dead ends: 33510 [2022-07-19 20:15:58,624 INFO L226 Difference]: Without dead ends: 30036 [2022-07-19 20:15:58,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:15:58,642 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 6560 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:15:58,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6560 Valid, 3630 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:15:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30036 states. [2022-07-19 20:16:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30036 to 20650. [2022-07-19 20:16:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20650 states, 20648 states have (on average 1.4131150716776444) internal successors, (29178), 20649 states have internal predecessors, (29178), 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) [2022-07-19 20:16:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20650 states to 20650 states and 29178 transitions. [2022-07-19 20:16:00,469 INFO L78 Accepts]: Start accepts. Automaton has 20650 states and 29178 transitions. Word has length 95 [2022-07-19 20:16:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:16:00,471 INFO L495 AbstractCegarLoop]: Abstraction has 20650 states and 29178 transitions. [2022-07-19 20:16:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2022-07-19 20:16:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 20650 states and 29178 transitions. [2022-07-19 20:16:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 20:16:00,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:16:00,483 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:16:00,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:16:00,483 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:16:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:16:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2022-07-19 20:16:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:16:00,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503851775] [2022-07-19 20:16:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:16:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:16:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:16:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:16:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:16:00,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503851775] [2022-07-19 20:16:00,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503851775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:16:00,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:16:00,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:16:00,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024436664] [2022-07-19 20:16:00,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:16:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:16:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:16:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:16:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:16:00,559 INFO L87 Difference]: Start difference. First operand 20650 states and 29178 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2022-07-19 20:16:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:16:03,428 INFO L93 Difference]: Finished difference Result 34902 states and 49344 transitions. [2022-07-19 20:16:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:16:03,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 95 [2022-07-19 20:16:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:16:03,512 INFO L225 Difference]: With dead ends: 34902 [2022-07-19 20:16:03,513 INFO L226 Difference]: Without dead ends: 32468 [2022-07-19 20:16:03,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:16:03,532 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:16:03,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:16:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2022-07-19 20:16:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 23082. [2022-07-19 20:16:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23082 states, 23080 states have (on average 1.4125649913344887) internal successors, (32602), 23081 states have internal predecessors, (32602), 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) [2022-07-19 20:16:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23082 states to 23082 states and 32602 transitions. [2022-07-19 20:16:05,681 INFO L78 Accepts]: Start accepts. Automaton has 23082 states and 32602 transitions. Word has length 95 [2022-07-19 20:16:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:16:05,681 INFO L495 AbstractCegarLoop]: Abstraction has 23082 states and 32602 transitions. [2022-07-19 20:16:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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) [2022-07-19 20:16:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 23082 states and 32602 transitions. [2022-07-19 20:16:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 20:16:05,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:16:05,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:16:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:16:05,688 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:16:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:16:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2022-07-19 20:16:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:16:05,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517663557] [2022-07-19 20:16:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:16:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:16:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:16:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:16:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:16:05,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517663557] [2022-07-19 20:16:05,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517663557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:16:05,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490374061] [2022-07-19 20:16:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:16:05,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:16:05,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:16:05,785 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) [2022-07-19 20:16:05,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:16:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:16:05,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 20:16:05,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:16:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:16:06,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:16:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:16:06,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490374061] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:16:06,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:16:06,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-07-19 20:16:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403036410] [2022-07-19 20:16:06,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:16:06,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:16:06,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:16:06,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:16:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:16:06,386 INFO L87 Difference]: Start difference. First operand 23082 states and 32602 transitions. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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) [2022-07-19 20:16:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:16:12,439 INFO L93 Difference]: Finished difference Result 80271 states and 113492 transitions. [2022-07-19 20:16:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:16:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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 96 [2022-07-19 20:16:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:16:12,563 INFO L225 Difference]: With dead ends: 80271 [2022-07-19 20:16:12,563 INFO L226 Difference]: Without dead ends: 64461 [2022-07-19 20:16:12,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 181 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:16:12,602 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 2051 mSDsluCounter, 5008 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 6649 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:16:12,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 6649 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:16:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64461 states. [2022-07-19 20:16:18,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64461 to 63930. [2022-07-19 20:16:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63930 states, 63928 states have (on average 1.3862157427105493) internal successors, (88618), 63929 states have internal predecessors, (88618), 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) [2022-07-19 20:16:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63930 states to 63930 states and 88618 transitions. [2022-07-19 20:16:18,849 INFO L78 Accepts]: Start accepts. Automaton has 63930 states and 88618 transitions. Word has length 96 [2022-07-19 20:16:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:16:18,850 INFO L495 AbstractCegarLoop]: Abstraction has 63930 states and 88618 transitions. [2022-07-19 20:16:18,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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) [2022-07-19 20:16:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 63930 states and 88618 transitions. [2022-07-19 20:16:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 20:16:18,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:16:18,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:16:18,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:16:19,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:16:19,072 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:16:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:16:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1408959169, now seen corresponding path program 1 times [2022-07-19 20:16:19,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:16:19,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133582438] [2022-07-19 20:16:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:16:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:16:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:16:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:16:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:16:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133582438] [2022-07-19 20:16:19,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133582438] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:16:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184474752] [2022-07-19 20:16:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:16:19,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:16:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:16:19,344 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) [2022-07-19 20:16:19,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:16:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:16:19,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 20:16:19,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:16:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:16:20,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:16:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:16:20,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184474752] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:16:20,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:16:20,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-07-19 20:16:20,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141752139] [2022-07-19 20:16:20,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:16:20,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 20:16:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:16:20,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 20:16:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-07-19 20:16:20,610 INFO L87 Difference]: Start difference. First operand 63930 states and 88618 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 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)